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A study of the influence of press parameters on particleboards’ performance

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Abstract

Nowadays, wood-based panel producers intend to lower costs by decreasing the pressing time and reducing resin consumption. Therefore, the aim of this work is to understand the influence of the pressing operating conditions (pressing time and pressing program) on the performance of particleboards (PBs) bonded with a UF resin (alkaline–acid process). For this purpose, several trials were carried out using a computer-controlled laboratory scale hot-press with a press cycle simulating a continuous press and a fixed position laboratory scale hot-press, varying the venting, the total pressing time (< 90 s, 90 s and > 90 s) and the gluing factor (resin content—4, 5 and 6 mg resin solids/g oven dry wood). Analysis of variance (ANOVA) was performed in order to evaluate the significance level of the effects of these parameters on PB’s physico-mechanical properties and formaldehyde content. The main results of the study were: to decrease formaldehyde content, resin content (RC) should be increased for pressing times higher or equal to 90 s or decreased for pressing times lower than 90 s; to increase internal bond, RC must be increased for pressing times equal or higher than 90 s, or decreased for pressing times lower than 90 s.

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Acknowledgements

Carolina Gonçalves thanks ENGIQ—Doctoral Programme in Refining, Petrochemical and Chemical Engineering (PDERPQ); FCT and EuroResinas—Indústrias Químicas for the PhD grant PD/BDE/114352/2016. This work was financially supported by: Project POCI-01-0145-FEDER-006939 (Laboratory for Process Engineering, Environment, Biotechnology and Energy—UID/EQU/00511/2013) funded by the European Regional Development Fund (ERDF), through COMPETE2020—Programa Operacional Competitividade e Internacionalização (POCI) and by national funds, through FCT—Fundação para a Ciência e a Tecnologia; the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM /50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement and 2GAR project under PT2020.

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Authors and Affiliations

  1. LEPABE-Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto, Portugal

    C. Gonçalves, J. Pereira, J. Martins, F. D. Magalhães & L. Carvalho

  2. EuroResinas-Indústrias Químicas SA, 7520-195, Sines, Portugal

    C. Gonçalves, N. T. Paiva & J. M. Ferra

  3. ARCP-Associação Rede de Competência em Polímeros, Rua Dr. Júlio de Matos 828/882, Porto, Portugal

    J. Pereira

  4. DEMad-Departamento da Engenharia de Madeiras, Campus Politécnico de Repeses, 3504-510, Viseu, Portugal

    J. Martins & L. Carvalho

  5. CICECO-Aveiro Institute of Materials and Departamento de Química, Universidade de Aveiro, 3810-193, Aveiro, Portugal

    A. Barros-Timmons

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  1. C. Gonçalves
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  2. J. Pereira
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  3. N. T. Paiva
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  4. J. M. Ferra
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  5. J. Martins
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  6. F. D. Magalhães
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  7. A. Barros-Timmons
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  8. L. Carvalho
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Correspondence to L. Carvalho.

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Gonçalves, C., Pereira, J., Paiva, N.T. et al. A study of the influence of press parameters on particleboards’ performance. Eur. J. Wood Prod. 78, 333–341 (2020). https://doi.org/10.1007/s00107-020-01507-y

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  • DOI: https://doi.org/10.1007/s00107-020-01507-y

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