Preparation of bisDOPO-NH2-POSS flame retardant and its application to plywood using modified urea-formaldehyde resin

被引：8
作者：
Wen, Mingyu [1 ]
Xu, Junxian [1 ]
Zhu, Jiazhi [1 ]
Liu, Yang [1 ]
Deng, Chao [1 ]
Shi, Junyou [1 ]
Park, Heejun [2 ,3 ]
机构：
[1] Beihua Univ, Coll Mat Sci & Engn, Wood Mat Sci & Engn Key Lab, Jilin 132013, Jilin, Peoples R China
[2] Jeonbuk Natl Univ, Coll Human Ecol, Dept Housing Environm Design, Jeonbuk, South Korea
[3] Jeonbuk Natl Univ, Coll Human Ecol, Res Inst Human Ecol, Jeonbuk, South Korea
来源：
WOOD MATERIAL SCIENCE & ENGINEERING | 2023年 / 18卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Polyhedral oligomeric silsesquioxane (POSS); phosphorus-silicon-nitrogen synergistic flame retardant; environmental urea-formaldehyde resin; plywood; DOPO-POSS; EPOXY; COMPOSITES; WOOD;
D O I：
10.1080/17480272.2022.2124384
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
A new type of polyhedral oligomeric silsesquioxanes bisDOPO-NH2-POSS flame retardant consisting of one polyhedral oligomeric silsesquioxane (POSS), two units of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and reactive -NH2 groups, was synthesized and characterized by FTIR, H-1 NMR, and P-31 NMR. It was applied to modified conventional environmentally friendly E0 grade urea formaldehyde (UF) resin to prepare flame-retardant plywood. Two other POSS structure flame retardants were used for comparison. The results showed that the addition of bisDOPO-NH2-POSS flame retardant to E0 UF resin improved bonding strength while lowering formaldehyde emission owing to the increase in cross-linking of the UF molecule chain in condensation. TGA curves showed that bisDOPO-NH2-POSS-E0 UF exhibited the highest thermal stability. The flammability characteristics of the plywood were evaluated by a cone calorimeter test (CCT), and the results indicated that the heat release and smoke production of flame-retardant plywood were lower than those of the control E0-UF plywood. Moreover, compared to E0-UF plywood, the char residue remaining after the CCT test of the flame-retardant plywood with POSS structure increased. In particular, bisDOPO-NH2-POSS-E0-plywood had a continual compact outer carbon layer, which was conducive to effectively forming a physical barrier to hinder the penetration of oxygen and heat and exhibiting the outstanding synergistic effect of phosphorous, silicon and nitrogen. [GRAPHICS]
引用
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页码：1252 / 1263
页数：12
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