A finite element (FE) approach was used to predict the barrier performance of nanocomposites with respect to fluids permeation. This could be, for example, a polymer with nanoreinforcements like graphene, and used as a coating or a liner. The model was verified with analytical and experimental measurements, and the influence on barrier performance of different flake characteristics – aspect ratio,

Acrylic adhesives offer design flexibility with its viscoelasticity. However, its use with composite parts has not been studied. In this regard, the aim of this work is to characterise the mode I delamination of acrylic adhesive bonded composite joints subjected to various displacement rates. This study used carbon/epoxy composite as the adherent and 3M adhesive film (VHB 4930F) as the adhesive. Double

The effect of sodium carbonate (Na2CO3) treatment of short bamboo fibres on mechanical properties and water absorption character of polyester composite is investigated. Treatment time and Na2CO3 concentration were optimised to 6 h and 5 wt-% respectively. Microscopy of the treated fibres showed a significant change in surface texture whereas; FTIR suggested the removal of amorphous compounds from the

The effects of mixing sequence of the polyether polyol and curing agent (triethylenetetramine) on mechanical and thermal properties and morphology of epoxy/polyether polyol/organoclay ternary nanocomposites are investigated in this study. The polyether polyol domain size data are relatively unchanged with mixing order both in epoxy/polyether polyol blends and in ternary nanocomposites. Generally, impact

Cultured marble is a blend of unsaturated polyester and calcium carbonate that is combined with pigments and additives to produce a wide range of colours and realistic, natural-looking patterns. This study aims to investigate process conditions (catalyst, temperature, cured time, etc …) of cultured marble at high temperatures. The optimized process conditions are obtained by thermal analysis from DSC

Epoxy resin (EP)-based composites have been widely used as a new type of insulating material in ultra-high voltage direct current transmission network. In this work, we prepare a series of TiO2-loaded EP composites and discuss the effects of TiO2 nanoparticles on mechanical properties, and electrical properties. The results indicate that TiO2 nanoparticles can improve electrical characteristics of

Today, the production of polymeric nanocomposite materials is one of the most important research fields. In this study, it was aimed to investigate the effect of organoclay particles on recycled polyester (rPET) fibre properties. In the literature, the studies mostly concerned with the engineering plastic applications, and hence the investigations were done on pellet and injection-moulded rPET/organoclay

This work is aimed to improve the dispersion of silica without compromise on the Mechanical and Dynamic properties, by the addition of Hydroxyl terminated poly dimethyl siloxane (PDMS-OH). PDMS-OH is expected to interact with silica through hydrogen bonding which is reversible, reduces filler–filler interaction and hence improve the silica dispersion. Dissociation of hydrogen bonds which is reversible

With the idea of improving the mechanical properties of acrylonitrile–butadiene rubber (NBR) for potential industrial application, hybrid nanofillers prepared by hybridizing graphene oxide (GO) with halloysite nanotubes (HNT), were incorporated through mechanical blending to reinforce NBR. Graphene oxide/halloysite nanotubes (GH) hybrid filler demonstrates significant synergetic reinforcement effect

Epoxidised natural rubber (ENR)/polyvinyl chloride (PVC)/silica (SiO2) membranes at a mass ratio of ENR and PVC 60:40 (%w/w) have been prepared by adding different silica amounts. The morphology, mechanical properties, water absorption capacity and water permeability of the membrane were investigated. The membranes were applied for palm oil mill effluent (POME) treatment, while treated and untreated

The production of silica masterbatches with reduced mixing energy consumption and enhanced mechanical properties has been developed. The unit operations in the process are the preparation of silica slurry in the presence of a suitable surfactant (in this case are ammonium laurate and diethylene glycol), the addition of the slurry to the fresh natural rubber latex (NRL) under stirring, coagulation of

Selective laser sintering (SLS) is a branch of additive manufacturing based on powders. The research was carried out to demonstrate the sintering feasibility of ultra-high molecular weight polyethylene (UHMWPE) and the evaluation of the parts of the mechanical property prepared by SLS at various laser powers was also conducted. Meanwhile, the morphology of the parts was examined through scanning electron

Electrical and shear behaviour of electrically conductive glass fibre/epoxy composites is studied under interlaminar shear loading. A well-connected network is developed by dispersing carbon nanotubes in the matrix and reinforcing micro carbon fibres between the glass laminates. The effect of carbon fibre length and their densities on the electrical and shear behaviour of the composite is investigated

New polymer composite, composed of artemisia argyi charcoal (AAC) and polypropylene (PP), was produced by extrusion and injection moulding process. ACC acted as filler for PP, and different content (5, 15, 35 and 50 wt-%) of ACC was added. AAC-PP composites (AACPC) were characterised by X-ray diffraction (XRD) analysis, water absorption, scanning electron microscopy (SEM), mechanical test and thermogravimetric

The phosphorous acid (H3PO2) was used as reducing agent to prepare phosphorus modified graphene oxide (P-FGO) was added into the EP/APP. The thermal stability, flame resistance, morphology of the residue char layer and impact fracture, and mechanical properties of the composites materials were investigated with TGA LOI, UL-94, SEM, TEM, impact and tensile test. The results show that the filling of

In this study, binary (CB/MnO2) and ternary nanocomposites (CB/MnO2/PPy) include carbon black (CB) and manganese (IV) oxide (MnO2) and polypyrrole (PPy) were chemically synthesized and were characterized by many techniques such as : FTIR-ATR, Raman spectroscopy, SEM-EDX, TGA-DTA analysis, XRD, TEM and BET surface analysis. Electroactive materials were used as a symmetric supercapacitor device system

In this study, a green and efficient method was demonstrated to produce few-layer graphene (FLG) with high quality and yield via liquid-phase exfoliation (LPE) of graphite in sodium dodecyl benzenesulfonate aqueous solution by sonication. The final concentration of the as-prepared graphene was 0.96 mg mL−1 with a lateral size of about 2 μm after 2 h of sonication exfoliation. In addition, the polyamide

Chopped aramid fibre-reinforced rubber composite (AFRC) is widely used in industry owing to its excellent characteristics. Rubber’s mechanical properties vary with the addition of aramid fibres. Although hyperelastic constitutive models exist for unfilled and filled rubber with carbon black, constitutive models for AFRCs have not been investigated yet. Here, we present experimental results demonstrating

In this study, a novel flexible piezoresistive strain sensor was prepared by using polydimethylsiloxane (PDMS) to encapsulate carbonised waste polybenzoxazine (cPBa). Benefiting from the porous conductive framework of cPBa, the infused PDMS endowed the cPBa/PDMS strain sensor with excellent mechanical properties. It was observed that this sensor exhibited both negative and positive piezoresistive effects

In this study, the hyperbranched polyester (HBP) was grafted onto the surface of graphene oxide (GO) to prepare functionalised GO (fGO). Results of X-ray photoelectron spectra, Thermogravimetric analysis, Fourier transform infrared spectroscopy and Transmission Electron Microscopy confirmed the success of grafting. Moreover, the anti-corrosion performance and barrier properties of the bare steel, and

The aim of the work was the investigation of the effect of dicumyl peroxide and different types of co-agents on cross-linking and physical–mechanical properties of vulcanisates based on acrylonitrile–butadiene rubber. First, dicumyl peroxide was applied for cross-linking at different curing temperatures. Based on the achieved results, the optimum temperature and peroxide concentration was chosen for

Despite the vast applications of fibre-reinforced polymer composites in multiple domains, conventional fabrication is laden with many difficulties, thus bringing focus on Additive manufacturing technologies. The aim of this study is to evaluate the effect of infill percentage, layer thickness and carbon fibre layer position on the mechanical tensile performance of Fused Deposition Modelling (FDM) printed

In this study, the calcification and platelet adhesion resistance property of plasma-treated polyurethane/heparinised carbon nano tube (PU/HCNT) nanocomposite thin films as a candidate polymer for polymeric heart valve was investigated. The PU and HCNTs nanocomposite films (PU/HCNT) were prepared using the solvent casting technique. CNTs were heparinised to surpass the dispersal and calcification resistance

In order to enhance properties of polylactic acid (PLA), its blend with polycarbonate (PC) and silica nanofiller were prepared and their properties were compared with neat PLA and PLA/PC alloy. To have a better exchange reaction between PLA and PC and also an enhanced dispersion of nanosilica throughout the organic polymeric matrix, tin(II) 2-ethylhexanoate (TEH) and poly(ethylene-co-glycidyl methacrylate)

Creep behaviour of an epoxy matrix composite with a similar arrangement of composites used in a root joint of a wind turbine blade is investigated in this research. The vacuum infusion process was used to manufacture the composite. Due to the linearity of the viscoelastic behaviour of the composite, the time-temperature superposition principle (TTSP) is applied by using an activation energy shifting

Owing to the thermal management of polymer-based thermal conductive composites provide great performance in various applications, widespread attention has been focused on the design and fabrication of thermally conductive materials. In the work, ultrahigh molecular weight polyethylene (UHMWPE) / boron nitride (BN) composites with segregated structures were fabricated by a facile heat-treatment powder

With the development of rocket and aerospace technology in recent decades, people have put forward higher requirements on the heat resistance and ablation performance of thermal protection materials. In this paper, zirconia fibre hybrid alumina fibre/boron phenolic (ZA/BPF) ceramifiable composites, based on ceramic fillers of MgO, Al2O3, SiC and mica-modified boron phenolic resin matrix, were prepared

In this paper, we examined glass transition, a very important parameter that determines the properties and applications of epoxy resins by the innovative approach of kinetic study. The effect of thermoplastic filler Polyethylene Glycol-1000 (PEG-1000) on the kinetics of glass transition temperature of epoxy was analysed by varying the filler loadings and the heating rates. The differential scanning

The interest in natural fibre composites as load-bearing elements has increased strongly in recent years. As natural fibres offer good biodegradability, strong reinforcement and low production costs, some industry sectors have started to substitute conventionally used materials. One excellent example for natural reinforcements is curaua fibres. Regardless, the use of natural fibres in prepregs is still

The halogen-free flame retardant (HFFR) styrene-ethylene-butylene-styrene (SEBS)/high impact polystyrene (HIPS)/polyphenylene oxide (PPO) composites filled with aluminium hypophosphite (AHP) and melamine cyanurate (MCA) had been prepared. The thermal stability, flame retardancy, carbon slag structure, mechanical and rheological properties of SEBS/HIPS/PPO composites had been investigated. The research

Polylactic acid (PLA)/thermoplastic urethane (TPU)/boron nitride (BN) composites were successfully prepared, the effect of microstructure evolution along with the compositional change and annealing treatment on the thermal conductivity of composite was investigated. Owing to the selective distribution of BN in low-viscosity TPU phase, the compactness of thermally conductive networks in PLA/TPU/BN composites

Carbon nanotubes (CNTs) were organic modified by the synthesized flame retardant (FR) named as spirocyclic pentaerythritol bisphosphorate disphosphoryl chloride/10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (SPDH). CNTs-g-SPDH with a core-shell microstructure was successfully obtained, and its grafting efficiency was calculated to be about 65%. Effects of pristine CNTs

This paper aims to increase the through-plane thermal conductivity of polymer composites by adjusting the filler orientation. Two methods were tested: a combination of immiscible polymers (PP-PET) and adding a foaming agent to a PA6-based composite. In both cases, graphite was used as a thermal conductive filler. Compounds with 10, 20 and 30 wt-% graphite were made for both methods. The through-plane