双层包覆聚磷酸铵及其阻燃PP的研究  

Study on Double-layer-encapsulated Ammonium Polyphosphate and Its Application for Flame-retardant PP

作　　者：于守武[1,2] 赵泽文 霍晓文 魏俊富 YU Shouwu;ZHAO Zewen;HUO Xiaowen;WEI Junfu(School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387,China;College of Materials Science and Engineering, North China University of Science and Technology, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials,Tangshan Key Laboratory of Functional Polymer Materials,Tangshan 063009,China)

机构地区：[1]天津工业大学材料科学与工程学院,天津300387 [2]华北理工大学材料科学与工程学院,河北省无机非金属材料重点实验室,唐山市功能高分子材料重点实验室,河北唐山063009

出　　处：《中国塑料》2019年第6期89-94,共6页China Plastics

摘　　要：采用甲醛三聚氰胺树脂(蜜胺树脂)和环氧树脂单层或双层包覆了聚磷酸铵(APP),并用于阻燃聚丙烯(PP),采用傅里叶红外光谱、扫描电子显微镜、水平垂直燃烧仪、氧指数仪等设备对包覆APP及阻燃PP进行了表征与分析。结果表明,经过包覆处理的APP水溶性降低,具有更高的膨胀率和阻燃效率;且双层包覆的APP具有最低的水溶性和最好的阻燃效果;相对纯APP,包覆APP对PP的力学性能影响更小,与PP基体具有更好的界面结合。Ammonium polyphosphate (APP) was encapsulated with formaldehyde-melamine resin and epoxy resin in a monolayer or double-layer mode and then used for flame-retardant modification of polypropylene (PP). The structure and performance of the resulting APP and relevant flame-retardant PP were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, horizontal vertical burning experiment and limiting oxygen index measurement. The results indicated that the water solubility of the encapsulated APP decreased, and its expansion ratio and flame-retardant efficiency were improved. The double-layer-encapsulated APP has lower water solubility and better flame-retardant effect than the mono-layer-encapsulated one. Compared to pure APP, the encapsulated APP had less effect on the mechanical properties of PP and stronger interface bonding with PP matrix.

关 键 词：蜜胺树脂 环氧树脂 聚磷酸铵 双层包覆 聚丙烯 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]