基于微纳层叠技术制备(APP+PUR-T)/PUR-T交替多层阻燃材料的结构与性能  

Structure and Properties of(APP+PUR-T)/PUR-T Alternative Multilayer Flame Retardant Based on Microlayer Coextrusion Technology

作　　者：张超[1] 石美浓[1] 张有忱[1] 焦志伟[1] 杨卫民[1] 杨利平 Zhang Chao;Shi Meinong;Zhang Youchen;Jiao Zhiwei;Yang Weimin;Yang Liping(Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Guangdong Gulf New Materials Institute,Shenzhen 518172,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]广东海湾新材料研究所,广东深圳518172

出　　处：《工程塑料应用》2019年第9期62-67,共6页Engineering Plastics Application

基　　金：国家重点研发计划项目(2016YFB0302000);广东省科技计划项目(2016B090915001)

摘　　要：利用微纳层叠技术制备聚磷酸铵(APP)+热塑性聚氨酯(PUR-T)/PUR-T交替多层复合材料,通过扫描电子显微镜(SEM)、热重(TG)分析、极限氧指数(LOI)测试、垂直燃烧测试(UL 94)、万能试验机等对材料进行表征并分析其内在结构与性能的关系.结果表明,相比于传统的普通共混制备技术,微纳层叠挤出技术可以使APP在PUR-T基体中的分散性大大提高,从而提高整体材料的阻燃性能和热稳定性,当APP质量分数为15%时,通过微纳层叠挤出技术制备的复合材料的垂直燃烧达到UL 94 V–0级,LOI达到29.1%;同时微纳层叠挤出技术还可以有效地抑制传统普通共混方法中由于填料增加而导致的力学性能下降的负面影响.The (APP+PUR-T)/PUR-T alternating multilayer composite was prepared by microlayer coextrusion technique. The internal structure and properties of samples were characterized and analyzed by scanning electron microscopy (SEM),thermogravimetric analysis (TGA),limiting oxygen index test (LOI),vertical burning test (UL94),universal testing machine,et al. The results show that the dispersibility of APP in the PUR-T matrix can be greatly improved by microlayer coextrusion technology compared to conventional blended technology,thereby improving the flame retardancy and thermal stability of the overall material.When the APP content is 15%,the composite material prepared by microlayer coextrusion technology reaches UL94 V–0 level,and the limiting oxygen index reaches 29.1%. At the same time,the microlayer coextrusion technology can effectively suppress the negative influence of the mechanical properties degradation caused by the increase of the filler in the conventional blended composites.

关 键 词：微纳层叠挤出 复合材料 阻燃性能 力学性能 

分 类 号：TB324[一般工业技术—材料科学与工程]