摘要
采用过渡金属盐磷酸镍负载二氧化硅制备了一种新型催化协效剂Ni/SiO2。采用燃烧性能测试、热失重分析、微型量热分析及碳层SEM形貌分析等手段研究了催化协效剂与膨胀型阻燃剂在聚丙烯复合材料中协同阻燃效果。结果表明,Ni/SiO2的引入使材料垂直燃烧性能提升至V-0级,极限氧指数(LOI)从27.5%提高至34.0%,材料热释放速率、总热释放量明显降低,降低了火灾危险性。该催化协效剂对膨胀型阻燃剂分解成炭反应有催化促进作用,是提高材料阻燃性能的主要原因,热分解残炭率有明显提升,形成了微观结构连续致密的类蜂窝形发泡炭层,阻隔了热量向基体的传导。
A new type of catalytic synergist Ni/SiO2 was prepared by nickel transition metal phosphate loading silicon dioxide.And the synergistic flame retardant effect of catalytic synergist and intumescent flame retardant in polypropylene composites were studied by combustion performance test,thermogravimetric analysis,micro calorimetry analysis and scanning electron microscope(SEM)morphology analysis of carbon layer.The results show that the vertical combustion performance of the material is improved to V-0 level.The limit oxygen index(LOI)increases from 27.5%to 34.0%,and the heat release rate and total heat release decrease significantly,which reduces the fire risk.The catalytic synergist can promote the decomposition of intumescent flame retardant into carbon,which is the main reason to improve the flame retardant performance of the materials.The carbon residue rate of thermal decomposition has been significantly increased,forming a continuous and compact honeycomb carbon layer with continuous and compact microstructure,which blocks the heat transfer to the matrix.
作者
彭红梅
韩锐
PENG Hong-mei;HAN Rui(School of Material and Environmental Protection,Chengdu Textile College,Chengdu 611731,China;School of Materials Science and Engineering,Xihua University,Chengdu 610039,China;School of Optoelectronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第12期135-138,共4页
China Plastics Industry
基金
成都纺织高等专科学校科研项目(500247X17036)
国家自然科学基金资助项目(51703182)
四川省科技厅应用基础面上项目(2017JY0137)。
关键词
膨胀型阻燃剂
催化协效剂
聚丙烯
成炭作用
Intumescent Flame Retardant
Catalytic Synergist
Polypropylene
Carbon Formation
