季戊四醇多聚磷酸酯三聚氰胺盐用作纸张阻燃剂的研究

Application of Pentaerythritol Polyphosphate Melamine Salt as Flame Retardant in Paper

关键词:  季戊四醇多聚磷酸酯三聚氰胺盐  极限氧指数  阻燃性能

Key Words:MPP  LOI  flame retardant performance

摘要:采用浆内添加+表面施胶两步法添加阻燃剂季戊四醇多聚磷酸酯三聚氰胺盐(MPP),分别以阳离子淀粉(CS)、阳离子聚丙烯酰胺(CPAM)为增强剂和助留剂，研究了MPP用量对纸张物理性能和阻燃性能的影响。通过极限氧指数测试(LOI)、热重分析(TGA)和扫描电镜(SEM)等对纸张阻燃性能进行了表征。结果表明,添加3% CS、1% CPAM、30% MPP(绝干浆)的纸张，LOI从空白样的22.4%提高到33.3%；600℃时的成炭量由16.4%提高到43.5%；SEM显示在植物纤维表面生成更多更大的发泡炭层,表明MPP具有良好的纸张阻燃性能,可以大幅提高纸张的阻燃性能。

Abstract:By adding pentaerythritol polyphosphate melamine salt (MPP) into the pulp and also sizing it on the paper surface,the physical properties and flame retardant properties of the papers by using different dosages of MPP and with the help of cationic starch (CS) and cationic poly acrylamide (CPAM) were compared.Limiting oxygen index (LOI), thermos gravimetric analysis (TGA) and scanning electron microscope (SEM) were used to study flame retardant mechanism.The results revealed that LOI of the paper prepared by adding 3%CS, 1%CPAM and 30% MPP(on oven dring pulp) was increased by 48.7% compared with the blank sample; the residual carbon increased from 16.4% to 43.5% at 600℃; more and bigger foamed char layers formed on the surface of pulp fibers were found under scanning electron microscope. This suggested that MPP had a good flame retardant property,which could significantly improve the flame retardant properties of paper．