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Influence of biobased polyol type on the properties of polyurethane hotmelt adhesives for footwear joints Appl. Adhes. Sci. Pub Date : 2021-11-19 Carbonell-Blasco, M. P., Pérez-Limiñana, M. A., Ruzafa-Silvestre, C., Arán-Ais, F., Orgilés-Calpena, E.
Polyurethanes, one of the most used polymers worldwide, are strongly dependent of non-renewable fossil resources. Thus, boosting the production of new polyurethanes based on more sustainable raw materials is crucial to move towards the footwear industry decarbonisation. The aim of this study is to synthesise and characterise reactive hotmelt polyurethanes from biomass and CO2-based polyols as bioadhesives
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Effect of interface-active proteins on the salt crystal size in waterborne hybrid materials Appl. Adhes. Sci. Pub Date : 2021-11-03 Stamboroski, Stephani, Boateng, Kwasi, Leite Cavalcanti, Welchy, Noeske, Michael, Beber, Vinicius Carrillo, Thiel, Karsten, Grunwald, Ingo, Schiffels, Peter, Dieckhoff, Stefan, Brüggemann, Dorothea
Aqueous processes yielding hybrid or composite materials are widespread in natural environments and their control is fundamental for a multiplicity of living organisms. Their design and in vitro engineering require knowledge about the spatiotemporal evolution of the interactions between the involved liquid and solid phases and, especially, the interphases governing the development of adhesion during
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Mechanical properties of unmodified and montmorillonite-modified epoxy compounds. Part I: compression test Appl. Adhes. Sci. Pub Date : 2021-09-26 Rudawska, Anna
The aim of the article was to determine the compressive strength and compressive strain of an unmodified and a modified epoxy compounds containing a montmorillonite filler, as well as to determine the effect of temperature and an aging time on the mechanical parameters of the considered epoxy compounds. The subject of the research was both the unmodified and the modified adhesive compounds. The unmodified
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In vitro antibacterial effect of fifth generation dentin bonding agent incorporated with nisin on Streptococcus mutans Appl. Adhes. Sci. Pub Date : 2021-07-06 Gopal Keerthipriya, Nesamani Ravikumar, Sekar Mahalaxmi
Bacterial adherence to restorative materials such as composite resin is one of the aetiology of secondary caries. This study evaluated the antibacterial efficacy of fifth generation bonding agent (BA) modified with nisin, against Streptococcus mutans based on its growth, adherence and membrane integrity. Adhesive eluents of the experimental bonding agents were obtained using 250 μl Brain Heart Infusion
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Antioxidant pre-treatments are able to reduce waiting time for restorative treatment after dental bleaching: a microtensile bond strength exploratory study Appl. Adhes. Sci. Pub Date : 2021-05-31 Sofia Lobo, Inês Caetano Santos, António H. S. Delgado, Luís Proença, Mário Polido, Ana Mano Azul, José João Mendes
The aim was to evaluate the effect of different antioxidant agents on the improvement of bond strength to enamel subjected to a whitening procedure. Samples were divided into six groups (n = 10): control; whitening immediately followed by restorative treatment (WHT); whitening and restoration after a 7-day period (WHT_7D); whitening and application of 10% sodium ascorbate (WHT_SA); application of 5%
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Tannin-based extracts of Mimosa tenuiflora bark: features and prospecting as wood adhesives Appl. Adhes. Sci. Pub Date : 2021-01-26 Pedro Jorge Goes Lopes, Leandro Calegari, Wagner Alex de Medeiros Silva, Darci Alberto Gatto, Pedro Nicó de Medeiros Neto, Rafael Rodolfo de Melo, Ivonete Alves Bakke, Rafael de Avila Delucis, André Luiz Missio
Mimosa tenuiflora (Willd.) Poir. (MT) is an underutilized plant specie since its wood is mostly used for energy production. Nonetheless, the bark from this forest plant has a high amount of tannins and other valuable compounds. Tannins have high worldwide importance and, because of that, there is an increasing number of researches on biorefinery systems aiming at maximizing their exploitation. The
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Adhesively bonded joints of jute, glass and hybrid jute/glass fibre-reinforced polymer composites for automotive industry Appl. Adhes. Sci. Pub Date : 2021-01-04 H. F. M. de Queiroz, M. D. Banea, D. K. K. Cavalcanti
Natural fibre-reinforced composites have attracted a great deal of attention by the automotive industry mainly due to their sustainable characteristics and low cost. The use of sustainable composites is expected to continuously increase in this area as the cost and weight of vehicles could be partially reduced by replacing glass fibre composites and aluminium with natural fibre composites. Adhesive
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The influence of epoxy adhesive toughness on the strength of hybrid laminate adhesive joints Appl. Adhes. Sci. Pub Date : 2021-01-04 R. J. C. Carbas, E. A. S. Marques, L. F. M. da Silva
The use of composite materials in structural applications has significantly expanded in recent years. The transport industry accounts for an increasingly larger share of the final structural weight of vehicles, as manufacturers pursue improvements in fuel economy, lighter more efficient designs, and reduction of emissions. However, the delamination of adhesively bonded composite joints causes premature
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Evaluation of adhesion of epoxy resin sealant to improve the corrosion resistance of thermal sprayed coatings Appl. Adhes. Sci. Pub Date : 2020-09-24 Mateus R. D. Carneiro, Bruno C. Freitas, Iuri B. de Barros, José B. de Campos, Ivan N. Bastos, Hector R. M. Costa
The adhesion of coatings on a given substrate has fundamental importance on a coating/substrate system's functionality. The current paper presents the adhesion strength results of FeCr and CoCr-based deposits produced by the electric arc thermal spray process on carbon steel, with an intermediate layer of 95Ni5Al. Three chemical compositions were tested for coating deposition and were characterized
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Micromorphological analysis and bond strength comparison of two adhesives for different degrees of dental fluorosis Appl. Adhes. Sci. Pub Date : 2020-08-19 Shuangfeng Liu, Yanxia Zhu, Tana Gegen
The objective of this study was to analyze morphologically the all-etching bonding system and self-etching bonding system for enamel with different degrees of fluorosis and evaluate the bond strength of each system. Teeth that were indicated for extraction owing to orthodontic or periodontal problems were selected. According to Dean’s index and the Thylstrup-Fejerskov index, 180 extracted teeth were
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Simulation of uniaxial stress–strain response of 3D-printed polylactic acid by nonlinear finite element analysis Appl. Adhes. Sci. Pub Date : 2020-07-29 Mohammed Alharbi, Ing Kong, Vipulkumar Ishvarbhai Patel
Accurate simulation of mechanical properties of 3D-printed objects can provide critical inputs to designers and manufacturers. Polylactic acid, a biodegradable polymer, is particularly important in this regard due to its excellent print quality and a wide range of applications. Herein, an accurate uniaxial stress–strain profile simulation of 3D-printed PLA is reported. Nonlinear Finite Element Analysis
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Does ceramic translucency affect the degree of conversion of luting agents? Appl. Adhes. Sci. Pub Date : 2020-04-25 Ricardo Huver de Jesus, Andrea Soares Quirino, Vinicius Salgado, Larissa Maria Cavalcante, William Mark Palin, Luis Felipe Schneider
Solely light-activated luting agents have been suggested for cementing procedures with aesthetic rehabilitations, but questions remain regarding their curing potential under more opaque prosthesis. To determine the degree of carbon double bond (C=C) conversion (DC) of four categories of luting strategies when considering the interposition of lithium-disilicate ceramic laminates with different translucencies
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Bonding strength of benuang and duabanga glulams using their barks as phenol formaldehyde-filler Appl. Adhes. Sci. Pub Date : 2020-03-16 Sari Delviana Marbun, Imam Wahyudi, Jajang Suryana, Deded Sarip Nawawi
In line with environmental issues and forest sustainability, tree bark of two species from tropical rain forests i.e. benuang (Octomeles sumatrana/BN) and duabanga (Duabanga moluccana/DB) was used as filler for phenol formaldehyde resin (PF-filler). The main objective of the research was to analyze effect of tree barks as PF-filler on bonding strength of BN and DB glulams produced. Four glue mixture
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A simple characterization methodology for the identification of the visco-elastic behavior of thermoset adhesives during cure Appl. Adhes. Sci. Pub Date : 2020-02-26 Marion Girard, Mael Péron, Alexandre Uguen, Pascal Casari, Frédéric Jacquemin
The identification of the mechanical behavior of adhesives is necessary to describe the development of residual stresses during their curing, which might impact their mechanical strength and lead to early failure of the bonding. A simple characterization and modeling approach is therefore developed and presented, which permits to monitor and identify the mechanical behavior of a thermosetting adhesive
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Effects of heat treatment on the behavior of teak wood adherends bonded joints Appl. Adhes. Sci. Pub Date : 2020-02-10 S. Budhe, M. D. Banea, S. Ghugal, S. de Barros
The main aim of this work is to investigate the effect of heat treatment on the teak wood adherend bonded joints. Indian teak wood samples were kept in an oven at 150 °C for 2 h for the heat treatment process. The surface roughness values of the wood adherend before and after the heat treatment process were measured using a surface profilometer. Wettability of un-treated and heat-treated teak wood
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Comparison of the adhesive joints’ strength of the similar and dissimilar systems of metal alloy/polymer composite Appl. Adhes. Sci. Pub Date : 2019-11-21 Anna Rudawska
The aim of the present article is to compare the strength of the adhesive lap joints of the selected materials used in aviation. The joints were made in the similar and dissimilar systems with the use of three epoxy adhesives. Three different adherends were used: the EN AW-7075 aluminium alloy, the aramid-epoxy composite and the carbon-epoxy composite. Three adhesive compounds based on the Epidian
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An experimental investigation on the effect of adhesive distribution on strength of bonded joints Appl. Adhes. Sci. Pub Date : 2019-11-20 A. P. Pisharody, B. Blandford, D. E. Smith, D. A. Jack
Adhesive joints are widely used due to their higher strengths, lower weights, lesser expenses and ease of fabrication than other methods of joining. Hence, they are used extensively in aerospace and automobile industries. High quality bonds require the use of fixtures which are essential to ensure proper curing and to attain uniform thickness. Improper adhesive application and method of fixturing can
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Microbond fibre bundle pullout technique to evaluate the interfacial adhesion of polyethylene and polypropylene self reinforced composites Appl. Adhes. Sci. Pub Date : 2019-09-23 M. Sharan Chandran, K. Padmanabhan
Self reinforced polymer composites possess a comparable shear and tensile strength unlike the glass or carbon fibre reinforced composites. Important deciding factors of overall efficiency of composite materials are the interfacial adhesion properties between the fibre and the matrix. Structural properties and processability of composite materials are also dependent on adhesion between the fibre and
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Influence of solvent evaporation on ultimate tensile strength of contemporary dental adhesives Appl. Adhes. Sci. Pub Date : 2019-06-17 Atsushi Kameyama, Akiko Haruyama, Hirokazu Abo, Masashi Kojima, Yuichi Nakazawa, Takashi Muramatsu
The aim of this study was to evaluate the influence of solvent evaporation on the ultimate tensile strength (UTS) of commercial adhesives. Two 1-step (OptiBond All-In-One and G-Premio Bond) and two 2-step (Clearfil SE Protect, OptiBond XTR) adhesives were selected. Two bottles of each adhesive were opened and stored at 37 °C in a dry oven with silica gel shielded from light for 2 weeks (“Desiccated”)
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Bond strength of glass fiber posts cemented with bulk-fill flowable composite resin Appl. Adhes. Sci. Pub Date : 2019-06-04 Victor da Mota Martins, Camila Ferreira Silva, Lorena Mendes Almeida, Marcella Silva de Paula, Murilo de Sousa Menezes, Paulo Cesar Freitas Santos-Filho
This study evaluated the adhesive bond strength of glass fiber posts cemented with bulk-fill flowable resin in endodontically treated teeth, and the results were compared with those of glass fiber posts cemented with resin cement. Forty bovine incisor roots were selected and randomly divided into 2 groups (n = 20). The external surfaces of the roots were coated with a molding material. The canals were
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Investigation of fluorine-based release agents for structural adhesive bonding of carbon fibre reinforced plastics Appl. Adhes. Sci. Pub Date : 2019-05-28 David Thull, Felix Zimmer, Timo Hofmann, Jens Holtmannspoetter, Thomas Koerwien, Michael Hoffmann
Peel plies can be used during the manufacture of fibre-reinforced plastics for two reasons: to protect the surface during transport and storing the parts as well as during subsequent work steps, such as adhesive bonding, the removal of the peel ply can result in bondable surface with required surface characteristics. However, the use of peel plies is not straightforward. It can be difficult to remove
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The effect of the maturation time of calcium silicate-based cement (Biodentine™) on resin bonding: an in vitro study Appl. Adhes. Sci. Pub Date : 2019-05-23 Hoang-Thai Ha
Biodentine™ is currently and regularly used as a direct/indirect capping material and dentine substitute under a resin composite direct restoration. The present study investigated the influence of Biodentine™ maturation time on its shear bond strength to a resin-based composite restorative material. One hundred fifty PTFE tubes were divided into 2 groups (n = 75), and each group of tubes was filled
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Comparison of different adhesively-bonded joint types for mechanical structures Appl. Adhes. Sci. Pub Date : 2018-12-24 N. G. C. Barbosa, R. D. S. G. Campilho, F. J. G. Silva, R. D. F. Moreira
Adhesively-bonded joints are widely used to join structural components. The most common joint types are single-lap joints (SLJ), double-lap joints (DLJ), stepped-lap joints and scarf joints. Several factors influence the behaviour and strength of an adhesive joint, namely the type of adhesive (brittle or ductile, strong or weak) and joint geometry. One of the most important parameters that affects
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Influence of technological procedures on mechanical properties of bonded joint Appl. Adhes. Sci. Pub Date : 2018-12-24 Pavel Liška, Barbora Nečasová, Jiří Šlanhof
It would not be an exaggeration to say that adhesive joints have been an essential part of the construction industry for several decades now. However, a substantial disadvantage of bonded joints are the very strict requirements for adherence to the technological procedures defined by the manufacturers of assembly systems. Even a slight deviation from the recommended application steps can have a significant
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Application a direct/cohesive zone method for the evaluation of scarf adhesive joints Appl. Adhes. Sci. Pub Date : 2018-12-20 D. F. O. Silva, R. D. S. G. Campilho, F. J. G. Silva, U. T. F. Carvalho
With the increasing use of structures with adhesive bonds at the industrial level, several authors in the last decades have been conducting studies concerning the behaviour and strength of adhesive joints. Between the available strength prediction methods, cohesive zone models, which have shown good results, are particularly relevant. This work consists of a validation of cohesive laws in traction
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Injection bonding of structural components with fast-curing two-component PUR-systems Appl. Adhes. Sci. Pub Date : 2018-12-11 Gerrit Conermann, Klaus Dilger
When someone joins large structural components, the importance of the joining technology increases. Well-known joining processes such as welding and classic adhesive bonding reach their limits with respect to cycle times and tolerances. A new two-component polyurethane injection process based on the reaction in mold technology, offers an alternative and has the potential to reduce costs and compensate
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Diagnosis attitudes and restorative practices of non-carious cervical lesions by a group of Brazilian dentists from the state of Rio de Janeiro Appl. Adhes. Sci. Pub Date : 2018-12-07 Rodrigo Antonio Modena, Patrícia Nivoloni Tannure, Vinícius Athayde Pessoa, Larissa Maria Cavalcante, Luis Felipe Jochims Schneider
This study aimed to identify diagnosis and restorative practices of non-carious cervical lesions (NCCLs) by a group of Brazilian dentists from the State of Rio de Janeiro. After ethical approval, a questionnaire was sent for a group of dentists registered at the Regional Council of Dentistry of the State of Rio de Janeiro (CRO-RJ, Brazil) and the answers were collected in a period of 15 days. The questionnaire
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Bonding of CAD/CAM lithium disilicate restorations with regular and flowable composite resin with and without wetting resin Appl. Adhes. Sci. Pub Date : 2018-12-04 Greciana Bruzi, Adriana Oliveira Carvalho, Marcelo Giannini, Hamilton Pires Maia, Pascal Magne
Assess the effect of applying a low viscosity resin before placing ceramic restoration with two different luting agent. Twenty slices from IPS e.max CAD (Ivoclar Vivadent) were fired and assigned to 5 treatment surface groups; E: hydrofluoric acid (HF); E/S: HF-etching + silane (20 s); E/S+: HF-etching + silane (60 s); S: silane (20 s); S+: silane (60 s). Before building the cylinder with regular or
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Improved glass bonding with plasma treatment Appl. Adhes. Sci. Pub Date : 2018-12-03 Åsa Lundevall, Peter Sundberg, Lars Mattsson
Bonding of automotive glass is generally performed with 1C PUR adhesive on a primed ceramic frit or naked glass surface. The aim of this research was to replace the chemistry of the primer with an atmospheric pressure plasma treatment (APPT) with compressed air for cleaning and activation directly before bonding. Characterization of the glass surface was performed with surface energy through contact
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Surface topography and bond strength of CAD–CAM milled zirconia ceramic luted onto human dentin: effect of surface treatments before and after sintering Appl. Adhes. Sci. Pub Date : 2018-12-01 Fabiane Carneiro Lopes, Regina Guenka Palma-Dibb, Lívia Bueno Campi, Roberto Ferreira Roselino, Érica Alves Gomes, Volni Augusto Canevese, Gabriel Kalil Rocha Pereira, Aloísio Oro Spazzin, Manoel Damião de Sousa-Neto
The purpose of this study was to investigate whether different surface treatments, executed before and after the sintering process, affect the surface characteristics (roughness and morphology) and shear bond strength of computer-aided design–computer-aided manufacturing (CAD–CAM) milled zirconia luted with self-adhesive resin cement onto human dentin. Sixty-four rectangular zirconia slabs (6 × 8.5 × 2
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Effect of surface treatments on the bond repair strength of resin composite to different artificial teeth Appl. Adhes. Sci. Pub Date : 2018-11-28 Amanda Maria de Oliveira Dal Piva, João Paulo Mendes Tribst, Paula Carolina Komori de Carvalho, Eduardo Shigueyuki Uemura, Tarcisio José de Arruda Paes Junior, Alexandre Luiz Souto Borges
The purpose of this study was investigate the influence of different surface treatments on the shear bond strength of two different type of artificial resin teeth repaired with composite resin. Fifteen (15) artificial teeth of each material (CR-composite resin and AR-acrylic resin) were divided into four parts and then embedded in acrylic resin. After, the teeth were separated into eight groups according
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Do lithium disilicate ceramic manufacturing techniques affect the degree of conversion of light-cured resin cement? Appl. Adhes. Sci. Pub Date : 2018-11-16 Amauri Cruz Drumond, Sandrine Bittencourt Berger, Alejandra Hortencia Miranda González, Guilherme Genovez-Júnior, Lucineide Lima dos Santos, Iana de Oliveira Fernandes Drumond, Murilo Baena Lopes, Ricardo Danil Guiraldo
The aim of this study is to evaluate the degree of conversion of light-cured resin cement subjected to activation through the interposition of lithium disilicate ceramic produced according to two manufacturing techniques. Cylindrical specimens of RelyX™ Veneer resin cement were generated based on each manufacturing technique (CAD/CAM—computer aided design/computer assisted manufacturing, n = 5 or pressed
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Effect of thermal postcuring on the micro- and macromechanical properties of polyurethane for wood bonding Appl. Adhes. Sci. Pub Date : 2018-11-10 Christoph Winkler, Ulrich Schwarz, Johannes Konnerth
The optimization of mechanical properties of adhesive bonds is of interest especially in structural applications. Besides transferring stresses, bondlines can also provide additional functionality, such as measuring deformations in structural timber applications by electrically conductive adhesives. This study investigates the influence of a thermal postcure treatment of polyurethane bonded wood joints
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Safety of adhesively bonded joints under detrimental service conditions Appl. Adhes. Sci. Pub Date : 2018-11-02 Katja Groß, Paul Ludwig Geiß
Durability and safety of adhesively bonded joints are of major importance in structural applications. The probability of failure of a bonded assembly after a certain period of time may be influenced by various aging effects including e.g. temperature and humidity. The correlation of results obtained from accelerated laboratory aging tests to long-term aging under service conditions often remains an
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Bonded repair of composite structures in aerospace application: a review on environmental issues Appl. Adhes. Sci. Pub Date : 2018-08-13 S. Budhe, M. D. Banea, S. de Barros
Over the last two decades, the repair of existing engineering structures using fiber reinforced polymer composites has attracted a great attention by aerospace industry, as it is more economical than replacing new. With an increased use of composite material in aerospace field, it is thus essential to restore the structural integrity by repair of damaged part. Concerns regarding the long term durability
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Investigation of UV exposure in adhesively bonded single lap joints Appl. Adhes. Sci. Pub Date : 2018-05-25 F. C. Amorim, J. M. L. Reis, J. F. B. Souza, H. S. da Costa Mattos
Adhesively bonded joints are being widely used in the fabrication process of aircraft and automobile structures. Surface roughness is an important parameter of product quality that strongly affects the performance of mechanical parts, as wel as production costs. This parameter highly influences the mechanical properties overall of such structures. The effects of UV radiation on the single lap joints
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Analysis and optimization of water-based printing ink formulations for polyethylene films Appl. Adhes. Sci. Pub Date : 2018-01-13 Jar Carlo C. Ramirez, Terence P. Tumolva
Water-based ink formulations containing wax, surfactant, and defoamer additives were prepared and printed on polyethylene film substrates. Standard test methods for adhesion, rub resistance, and gloss were done on the printed polyethylene films. Quantitative methods for the assessment and evaluation of the three print properties were developed. Image analyses were done to quantify adhesion and rub
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An automated non-destructive testing system for seam bondings in automotive serial production Appl. Adhes. Sci. Pub Date : 2017-12-21 Maximilian Klausing, Henning Heuer
The joining process of seam bond is used in automobile construction because of the non-visible joints on mounted parts such as doors, hoods or luggage compartment doors. With these components, a structure-providing inner panel is joined with the outer panel, which is visible to the customer. Besides providing stability, particularly in the event of a crash, the joining level is also filled with adhesive
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Comparative study of adhesive joint designs for composite trusses based on numerical models Appl. Adhes. Sci. Pub Date : 2017-12-13 N. P. Lavalette, O. K. Bergsma, D. Zarouchas, R. Benedictus
In the context of lightweight structure design for the transportation and robotics industries, new types of composite structures are being developed, in the form of trusses made of fiber-reinforced polymer composite members of small diameter (a few millimeters thick at most). Some concepts of wound trusses can be found in the literature, but in more general cases, for which a predefined wound truss
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Study the effect of partially replacement sand by waste pistachio shells in cement mortar Appl. Adhes. Sci. Pub Date : 2017-12-05 Zainab Hashim Abbas Alsalami
The most economic and environmental problems result from burial agricultural waste materials. The main objective of the present investigation is to assess the usefulness of agricultural waste in mortar admixture. These materials are expected to reduce the density of the admixture, and thus producing lightweight mortar.This study aims to study the effect of using pistachio shells as partial replacement
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Comparison of different adhesive techniques using a universal adhesive system Appl. Adhes. Sci. Pub Date : 2017-11-25 Fabricia Vianna Costa, Luiza Mello de Paiva Campos, Mirko Dennys Ayala, Walter Gomes Miranda, William Cunha Brandt, Caio Vinicius Gonçalves Roman-Torres, Letícia Cristina Cidreira Boaro
In order to simplify the technique while maintaining its effective clinical performance, as well as its adhesive properties, universal adhesive systems are constantly launched in the market. Thus, the objective of this study was to compare the presence or absence of moisture in the adhesion technique using a universal adhesive system, the Single Bond Universal (3M ESPE). There were selected forty-five
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Post-etching cleaning influences the resin shear bond strength to CAD/CAM lithium-disilicate ceramics Appl. Adhes. Sci. Pub Date : 2017-10-23 Greciana Bruzi, Adriana Oliveira Carvalho, Marcelo Giannini, Hamilton Pires Maia, Pascal Magne
The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface that affects negatively the bond, affirming the need of a post-etching cleaning. Evaluate the shear bond strength (SBS) of composite resin to CAD/CAM lithium-disilicate ceramics after different post-etching cleaning
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A qualitative, process-parameter-based model for the release agent transfer during CFRP-part production: an approach to increase the initial bondability Appl. Adhes. Sci. Pub Date : 2017-09-25 David Blass, Sven Hartwig, Klaus Dilger
Adhesive bonding shows a high potential to join carbon fiber reinforced plastics (CFRP), if the adhesion between adhesive and part surface is verified. Unfortunately, this adhesion is often reduced in case of the mold-based part production and its unavoidable application of release agents. Due to the resulting presence of release agent residues on the surface of the cured CFRP-parts the adhesion is
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A new joining-device for manufacturing tubular butt joints with higher curing temperatures of film adhesives Appl. Adhes. Sci. Pub Date : 2017-09-20 Martin Johannes Schollerer, Jens Kosmann, Thomas Löbel, Dirk Holzhüter, Christian Hühne
For detailed stress distribution analysis of bondlines, non-linear finite element analysis (FEA) is necessary. Depending on the load case in relation to shear and tension/compression adhesives show a different behaviour of the yield point [1], which is e.g. included in the Mahnken and Schlimmer [2] model. State of the art for biaxial tested adhesive material-characteristics is the use of bonded tubular
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Nondestructive testing of contaminated CFRP surfaces with the BonNDTinspect® system Appl. Adhes. Sci. Pub Date : 2017-08-01 André Kraft, Kai Brune, Cristian Tornow, Gudrun Mühlhofer, Bernd Mayer, Bernd Valeske
Composite materials are already being used in the mass production of structural components in the automotive industry, particularly at the BMW Group. Adhesive bonding is generally considered to be the best technique for joining CFRP (carbon fiber reinforced plastic) light-weight structures. The conventional NDT (nondestructive testing) methods currently being used focus on the detection of material
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Editorial for the special issue for the 6th Asian Conference on Adhesion Appl. Adhes. Sci. Pub Date : 2017-07-06 Toshiaki Ougizawa, Akio Takemura, Chiaki Sato
Since adhesive bonding becomes a popular and important technique for industry, much research has been conducted by many researchers even in the Asian region. The Asian Conference on Adhesion was established to meet the demand for communication, corroboration, and exchanging information among researchers on adhesion and adhesion related phenomena in the Asian region in 2005. The science committee of
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Editorial TS: Papers from the 3rd Luso-Brazilian Conference on Adhesion and Adhesives (CLBA2016), Rio de Janeiro, Brazil, 25–27 January 2016 Appl. Adhes. Sci. Pub Date : 2017-06-23 Lucas F. M. da Silva, Silvio de Barros
This special issue of Applied Adhesion Science (AAS) contains selected papers presented at the 3rd Luso-Brazilian Conference on Adhesion and Adhesives (CLBA 2016) held in Rio de Janeiro, Brazil, during January 25–27, 2016. CLBA 2016 was chaired by both of us and was co-organized by the Brazilian Association of Adhesion and Adhesives (ABAA) and the Portuguese Association of Adhesion and Adhesives (APAA)
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Editorial: 52nd annual meeting of the Brazilian Dental Materials Group Appl. Adhes. Sci. Pub Date : 2017-06-09 Rafael R. Moraes
The 52nd annual meeting of the Brazilian Dental Materials Group, known by its acronym in Portuguese GBMD (Grupo Brasileiro de Materiais Dentários), was held in Uberlândia, Minas Gerais state, Brazil between July 19–22, 2016. The conference was chaired by the School of Dentistry from Federal University of Uberlândia. In total, 9 researchers lectured, 258 research posters were presented, and above 350
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Interfactant action of an amphiphilic polymer upon directing graphene oxide layer formation on sapphire substrates Appl. Adhes. Sci. Pub Date : 2017-05-15 Yendry Regina Corrales Ureña, Welchy Leite Cavalcanti, Marko Soltau, Karolina Villalobos, Klaus Rischka, Paul-Ludwig Michael Noeske, Kai Brune, Stefan Dieckhoff
Quality assured surface pre-treatment may greatly enhance adhesive interactions and, thus, the performance and durability of material joints. This holds true as well for substrates used in coating processes as for adherents introduced into bonding processes. Wettable polymeric wetting agents—shortly called polymeric interfactants—contribute to modifying surfaces and governing the properties of interphases
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Analysis of the effect of size, amount and surface treatment on the tensile strain of a brittle adhesive reinforced with micro cork particles Appl. Adhes. Sci. Pub Date : 2017-04-24 A. Q. Barbosa, L. F. M. da Silva, J. Abenojar, M. Figueiredo
Nowadays, structural adhesives are increasingly being used for new applications, replacing conventional bonding methods. Epoxy resins are the most common structural adhesives used due to their suitable mechanical, thermal and chemical properties, despite their low ductility. In the past decades, several researchers have found it crucial to reverse these properties and find new ways to increase the
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Experimental investigation of the effect of tip shape in gecko-inspired adhesive devices under asymmetric detachment Appl. Adhes. Sci. Pub Date : 2017-03-09 Yu Sekiguchi, Chiaki Sato
Gecko’s foot hairs exhibit significant frictional anisotropy that enables a strong foot grip in a specific direction and an easy detachment in the opposite direction. In this study, we fabricate adhesive devices with frictional anisotropy mimicking gecko’s foot hair based on oblique micro-beam arrays. The devices adhesion force is strongly anisotropic along the beam tilting direction and depends on
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Experimental investigation of mode I fracture energy of adhesively bonded joints under impact loading conditions Appl. Adhes. Sci. Pub Date : 2017-02-28 Yuki Yamagata, Xi Lu, Yu Sekiguchi, Chiaki Sato
Double cantilever beam (DCB) tests under impact loading conditions were conducted using a falling-wedge impact test machine and a high-speed camera. The change in mode I fracture energy G IC was investigated in comparison with the results obtained under the quasi-static loading condition. Two types of adhesives with significantly different mechanical properties were used for the DCB tests, and the
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Control of adhesive strength of acrylate polymers containing 1-isobutoxyethyl and isobornyl esters in response to dual stimuli for dismantlable adhesion Appl. Adhes. Sci. Pub Date : 2017-02-06 Yusuke Fukamoto, Eriko Sato, Haruyuki Okamura, Hideo Horibe, Akikazu Matsumoto
To develop an adhesion system satisfying both constant adhesion strength during use and quick debonding ability during a dismantling process. Adhesive properties were investigated for the random and block copolymers consisting of 1-isobutoxyethyl acrylate (iBEA), 2-ethylhexyl acrylate (2EHA), and 2-hydroxyethyl acrylate (HEA) as the dismantlable pressure-sensitive adhesives in the presence of a photoacid
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Study of adhesion between microspheres and rubber surfaces accompanied by meniscus formation and sedimentation Appl. Adhes. Sci. Pub Date : 2017-02-06 Shoko Mishima, Hiroaki Iikura, Toshiaki Ougizawa
This paper reports on the adhesion characteristics between microspheres and rubber surfaces. Silica, polystyrene, and poly(methyl methacrylate) microspheres were deposited on cis-1,4-polybutadiene (BR) films. A BR meniscus formed on the sphere surfaces when the film thickness was less than the diameters of the spheres. Additionally, the attractive forces acting on the spheres in the direction of the
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Evaluation of energy dissipation involving adhesion hysteresis in spherical contact between a glass lens and a PDMS block Appl. Adhes. Sci. Pub Date : 2017-02-03 Dooyoung Baek, Pasomphone Hemthavy, Shigeki Saito, Kunio Takahashi
Adhesion hysteresis was investigated with the energy dissipation in the contact experiments between a spherical glass lens and a polydimethylsiloxane (PDMS) block. The experiments were conducted under step-by-step loading–unloading for the spontaneous energy dissipation. The force, contact radius, and displacement were measured simultaneously and the elasticity of the PDMS was confirmed. The work of
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Effects of mixed micro and nano silica particles on the dynamic compressive performances of epoxy adhesive Appl. Adhes. Sci. Pub Date : 2017-02-02 Yohanes, Yasuhisa Sekiguchi
Effects of mixed micro and nano silica particles on the dynamic stiffness, stress transmissibility, and energy absorption of the epoxy composite were investigated using the split Hopkinson pressure bars. It was found that the dynamic stiffness significantly increased with silica weight fraction regardless of its sizes and composition ratio. However, the effect became less significant as the temperature
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Coumarin-based iodonium hexafluoroantimonate as an alternative photoinitiator for experimental dental adhesives resin Appl. Adhes. Sci. Pub Date : 2017-01-13 Peterson Oliveira Boeira, Carine Tais Welter Meereis, Carlos Enrique Cuevas Suárez, Suzanne Mendes de Almeida, Evandro Piva, Giana da Silveira Lima
The objective of this study was to evaluate the coumarin-based iodonium hexafluoroantimonate (P3C-Sb) in the polymerization kinetics of an experimental model adhesive resin both in presence of solvent and acid monomer content. A monomer mixture based on Bis-GMA, TEGDMA and HEMA was used as a model adhesive resin. Initially a screening was performed to evaluate P3C-Sb concentrations (0.25, 0.50, 1,
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Influence of aging methods on push-out bond strength of adhesive systems to dentin cavities Appl. Adhes. Sci. Pub Date : 2017-01-03 Letícia Virgínia de Freitas Chaves, Tuany Arantxa de Medeiros, Boniek Castillo Dutra Borges, Maria do Carmo Aguiar Jordão Mainardi, Anderson Catelan, Flávio Henrique Baggio Aguiar
This study evaluated the effect of aging methods on the bond strength of etch-and-rinse adhesive systems to dentin cavities. Eighty bovine incisors were used to prepare dentin cavities, which were bonded with different adhesive systems [Adper Scotchbond Multipurpose (SBMP), and Adper Single Bond 2 (SB)], and restored with composite resin. The specimens were stored in water for 24 h, and subjected to
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Effect of oxidation and surface roughness on the shear strength of single-lap-joint adhesively bonded metal specimens by tension loading Appl. Adhes. Sci. Pub Date : 2016-12-12 M. H. Khan, O. A. Gali, A. Edrisy, A. R. Riahi
An experimental investigation was performed to study the effect of surface roughness and oxidation on the shear strength of single-lap-joints of AA6061, AA7075 aluminum alloys and an AISI 1080 steel alloy bonded with two different epoxy adhesives. An optimum surface roughness that provided the maximum shear strength was obtained for all the alloys at room temperature. The variation of the shear stress
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Effects of ceramic primers and post-silanization heat treatment on bond strength of resin cement to lithium disilicate-based ceramic Appl. Adhes. Sci. Pub Date : 2016-12-07 Thaiane Rodrigues Aguiar, Wladimir Franco de Sá Barbosa, Marina Di Francescantonio, Marcelo Giannini
This study evaluated the effect of different ceramic primers and heat treatment of silane coupling agents on bond strength of resin cement to glass ceramic. Five ceramic primers (Clearfil Ceramic Primer/CCP, MonoBond-S, ProSil, RelyX Ceramic Primer and Silano) and one conventional resin cement (RelyX ARC) were tested. Lithium disilicate-based ceramic plates were previously etched with hydrofluoric