Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive
Polyurethane adhesive for wood bonding were prepared from the mixture of Acacia mangium (AM) polyol and 4,4’-methylene diphenyl diisocynate (pMDI). In this study, Acacia mangium polyurethane (AMPU) adhesives were prepared by polymerization between pMDI and AM polyol. Various NCO/OH ratios of AMPU ad...
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BIO Web of Conferences
2023
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Online Access: | https://eprints.ums.edu.my/id/eprint/38337/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/38337/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/38337/ https://www.bio-conferences.org/articles/bioconf/abs/2023/18/bioconf_ctress2023_05033/bioconf_ctress2023_05033.html |
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my.ums.eprints.383372024-02-22T03:09:27Z https://eprints.ums.edu.my/id/eprint/38337/ Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive Valeritta Lodin Paridah Md Tahir Ag Ahmad Mohd Yunus Ismawati Palle SD391-410.9 Sylviculture TA401-492 Materials of engineering and construction. Mechanics of materials Polyurethane adhesive for wood bonding were prepared from the mixture of Acacia mangium (AM) polyol and 4,4’-methylene diphenyl diisocynate (pMDI). In this study, Acacia mangium polyurethane (AMPU) adhesives were prepared by polymerization between pMDI and AM polyol. Various NCO/OH ratios of AMPU adhesives were used to fabricate 3-ply plywood from Eucalyptus wyrai veneers. The effect of different NCO/OH ratios: 1:4, 1:6, 1:8, 2:0, 2:2, 2:4 and 2:6 on lap shear strength and chemical resistance in cold water, hot water, sulfuric acid solution (pH2) and sodium hydroxide solution (pH12) were studied. The commercial PU adhesives were used for comparison purposes. The results show that PU adhesives prepared from pMDI with AM polyol with NCO/OH ratio at 2.4 have higher lap shear strength and chemical resistance by only showing slight degradation (2-8%) compared to commercial PU wood bonding adhesive. BIO Web of Conferences 2023 Proceedings PeerReviewed text en https://eprints.ums.edu.my/id/eprint/38337/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/38337/2/FULL%20TEXT.pdf Valeritta Lodin and Paridah Md Tahir and Ag Ahmad Mohd Yunus and Ismawati Palle (2023) Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive. https://www.bio-conferences.org/articles/bioconf/abs/2023/18/bioconf_ctress2023_05033/bioconf_ctress2023_05033.html |
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SD391-410.9 Sylviculture TA401-492 Materials of engineering and construction. Mechanics of materials Valeritta Lodin Paridah Md Tahir Ag Ahmad Mohd Yunus Ismawati Palle Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
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Polyurethane adhesive for wood bonding were prepared from the mixture of Acacia mangium (AM) polyol and 4,4’-methylene diphenyl diisocynate (pMDI). In this study, Acacia mangium polyurethane (AMPU) adhesives were prepared by polymerization between pMDI and AM polyol. Various NCO/OH ratios of AMPU adhesives were used to fabricate 3-ply plywood from Eucalyptus wyrai veneers. The effect of different NCO/OH ratios: 1:4, 1:6, 1:8, 2:0, 2:2, 2:4 and 2:6 on lap shear strength and chemical resistance in cold water, hot water, sulfuric acid solution (pH2) and sodium hydroxide solution (pH12) were studied. The commercial PU adhesives were used for comparison purposes. The results show that PU adhesives prepared from pMDI with AM polyol with NCO/OH ratio at 2.4 have higher lap shear strength and chemical resistance by only showing slight degradation (2-8%) compared to commercial PU wood bonding adhesive. |
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Proceedings |
author |
Valeritta Lodin Paridah Md Tahir Ag Ahmad Mohd Yunus Ismawati Palle |
author_facet |
Valeritta Lodin Paridah Md Tahir Ag Ahmad Mohd Yunus Ismawati Palle |
author_sort |
Valeritta Lodin |
title |
Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
title_short |
Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
title_full |
Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
title_fullStr |
Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
title_full_unstemmed |
Effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
title_sort |
effect of isocyanate index on shear strength plywood properties using acacia mangium polyurethane-based adhesive |
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BIO Web of Conferences |
publishDate |
2023 |
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https://eprints.ums.edu.my/id/eprint/38337/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/38337/2/FULL%20TEXT.pdf https://eprints.ums.edu.my/id/eprint/38337/ https://www.bio-conferences.org/articles/bioconf/abs/2023/18/bioconf_ctress2023_05033/bioconf_ctress2023_05033.html |
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