Surface modification of aluminum hypophosphite and its application for polyurethane foam composites

被引：1
作者：
Fubin Luo
Kun Wu
Mangeng Lu
Liu Yang
Jun Shi
机构：
[1] Chinese Academy of Sciences,Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry
[2] University of Chinese Academy of Sciences,Guangzhou Green Building Materials Academy, Guangzhou Institute of Chemistry
[3] Chinese Academy of Sciences,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2017年 / 129卷
关键词：
Polyurethane foam; Flame retardant; Aluminum hypophosphite; Thermal analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Aluminum hypophosphite (AHP) is surface modified by melamine derivative to fabricate reactive solid flame retardant (MCAHP) for polyurethane foam. MCAHP is successfully prepared and characterized by FTIR and SEM. The flame-retarded efficiency of MCAHP in PU is higher than that of AHP. It demonstrated that MCAHP has better compatibility in PU matrix compared with AHP based on the SEM observation. After surface modification, due to the reaction between MCAHP and PU matrix, crosslinking might be formed between MCAHP and PU matrix, which contributes to the excellent compatibility of MCAHP in PU matrix, and as a result, the glass transition temperature of PU/MCAHP is 4 °C higher than that of PU/AHP. The thermal behavior of PU composites is characterized by TG and TG-FTIR, and results suggest the sublimation of melamine at about 320 °C because of the decomposition of the melamine derivative. The sublimation of melamine can consume abundant heat and dilute the oxygen concentration, which is benefit for the improvement of flame retardancy.
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页码：767 / 775
页数：8
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