原位改性聚甲醛/二氧化硅纳米复合材料的制备及性能研究  

Preparation and properties of nano-silica in-situ modified polyformaldehyde composites

作　　者：王梦辉 武文昊 王振华 邱欣威 刘保英[1] 房晓敏[1] 丁涛[1] WANG Menghui;WU Wenhao;Wang Zhenhua;QIU Xinwei;LIU Baoying;FANG Xiaomin;DING Tao(College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,Henan,China;Institute of Science and Technology,Henan Kaifeng College of Science Technology and Communication,Kaifeng 475004,Henan,China)

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南开封科技传媒学院理工学院,河南开封475004

出　　处：《化学研究》2022年第5期453-459,共7页Chemical Research

基　　金：国家自然科学基金(51703051);河南大学大学生创新创业训练计划项目(2020101508)。

摘　　要：利用未封端聚甲醛(p-POM)的半缩醛活泼端基结构,设计制备二氧化硅原位改性聚甲醛(g-POM-SiO_(2))复合材料,并对比分析其与直接共混复合材料(g-POM/SiO_(2))的热性能、结晶性能、力学性能和燃烧性能。结果表明:g-POM/SiO_(2)复合材料的力学性能较好;而g-POM-SiO_(2)复合材料的弯曲性能较好;二者的极限氧指数较g-POM均有5%的提升。这为通过聚甲醛的未封端基团实现聚甲醛树脂阻燃性能的提升提供了一定的研究思路。The in-situ modified polyformaldehyde(g-POM-SiO_(2))composite was designed and prepared by using the active semi-acetal structure of unsealed polyformaldehyde(p-POM),and the thermal properties,crystallization properties,mechanical properties and combustion properties of the composite were compared with those of the direct blend composite(g-POM/SiO_(2)).The results show that g-POM/SiO_(2)composites have good mechanical properties.The bending properties of g-POM-SiO_(2)composites are better.Compared with g-POM,the limiting oxygen index of both of them increase by 5%.This study provides some ideas for improving the flame retardancy of polyformaldehyde resin through the unsealed group of polyformaldehyde.

关 键 词：聚甲醛 二氧化硅 原位复合 力学性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]