改性氢氧化铝/三聚氰胺在硅酮密封胶中的协同阻燃研究  

Study on Synergistic Flame Retardancy of Modified Aluminum Hydroxide/Melamine in Silicone Sealant

作　　者：陈自正 蒋金博 朱应和 钟绍昌 Chen Zizheng;Jiang Jinbo;Zhu Yinghe;Zhong Shaochang(Guangzhou Baiyun Chemical Industry Co.,Ltd.,Guangzhou,Guangdong 510540,China)

机构地区：[1]广州市白云化工实业有限公司,广东广州510540

出　　处：《中国建筑防水》2022年第4期17-20,39,共5页China Building Waterproofing

摘　　要：采用溶液改性法对Al(OH)_(3)粒子进行表面修饰,将改性剂化学包覆在粒子表面,从而改善Al(OH)_(3)粒子的分散性;然后与三聚氰胺(MA)复配,降低总阻燃剂添加量,探索两种阻燃剂在硅酮密封胶中的协同阻燃作用。研究了表面改性对Al(OH)_(3)结构性能的影响,以及Al(OH)_(3)与MA的协同阻燃效应对于硅酮密封胶阻燃性能和力学性能的影响。结果表明,进行表面改性以后,Al(OH)_(3)粒子与硅酮密封胶的相容性有一定程度改善;与MA复配以后具备协同阻燃作用,在硅酮密封胶中总添加量小幅下降仍然能够维持V-0的阻燃级别,同时伸长率有较大提升。The surface of Al(OH)_(3)particles is modified by solution modification method, and the modifier is chemically coated on the particle surface, so as to improve the dispersion of Al(OH)_(3)particles;then it is compounded with melamine(MA)to reduce the amount of total flame retardant and the synergistic flame retardant effect of the two flame retardants in silicone sealant is explored. The paper also studies the effect of surface modification on the structural performance of Al(OH)_(3)and the synergistic flame retardant effect of Al(OH)_(3)and MA on the flame retardant and mechanical properties of silicone sealant. The results show that the compatibility between Al(OH)_(3)particles and silicone sealant is improved to a certain extent after surface modification;after compounding with MA, it has synergistic flame retardant effect. The total amount added in silicone sealant decreases slightly, but it can still maintain the flame retardant level of V-0, and the elongation is greatly improved.

关 键 词：硅酮密封胶 阻燃性 氢氧化铝 三聚氰胺 协同阻燃 

分 类 号：TU504[建筑科学—建筑技术科学] TU578