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http://dx.doi.org/10.5658/WOOD.2021.49.6.667

Research on Flame Retardant Plywood with Different Flame Retardants  

LIU, Yang (Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University)
XU, Jun-xian (Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University)
WEN, Ming-yu (Department of Wood Material Science and Engineering Key Laboratory, College of Materials Science and Engineering, Beihua University)
PARK, Hee-Jun (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Jeonbuk National University)
ZHU, Jia-zhi (Qingdao Water Consservancy Survey and Design Institute Co. Ltd.)
LIU, Yu-nan (Department of Furniture Design and Engineering, College of Chemistry and Materials, Zhejiang A&F University)
Publication Information
Journal of the Korean Wood Science and Technology / v.49, no.6, 2021 , pp. 667-678 More about this Journal
Abstract
The flame retardancy of plywood should be improved as much as possible while minimizing the impact on the bonding strength of plywood. Six commercial flame retardants and three laboratory synthesized phosphorous nitrogen flame retardants were selected. E0, E1 and E2 grade commercial formaldehyde resins (UF) were applied in this study to evaluate the effect of different flame retardants on the curing time of resin, bonding strength, flame retardant performance, and formaldehyde emission of plywood. The results show that the effect of the addition of different flame retardants on the bonding strength of plywood gradually decreased with the increase of the formaldehyde molar ratio of the resin. The effect of flame retardants on the curing time of UF gradually decreased as the mole ratio of formaldehyde increasing, while the amount of formaldehyde emission varied according to the content of formaldehyde in the flame retardant. Compared with plywood without flame retardant, flame retardant of plywood added with phosphorous nitrogen flame retardant was improved.
Keywords
flame retardant plywood; phosphorous nitrogen flame retardant; curing time; urea-formaldehyde resins; bonding strength; formaldehyde emission;
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