研究了三聚氰胺用量对硅橡胶/氢氧化镁/水滑石复合材料阻燃性能和热稳定性能的影响,分别通过极限氧指数仪、水平垂直燃烧仪、热重分析仪进行测试表征。结果表明:三聚氰胺的加入使复合材料热失重温度范围扩大,有效地降低了热失重速率,提高了复合材料的热稳定性。固定硅橡胶/氢氧化镁/水滑石质量比为100/38/22时,当三聚氰胺的添加量达到15份时,垂直燃烧等级达到V-0,极限氧指数为30.4%,阻燃性能优异。
The effects of melamine amount on flame retardancy and thermal stability of silicone rubber/magnesium hydroxide[Mg(OH)2」/hydrotalcite composites were characterized by ultimate oxygen index instrument,horizontal vertical combustion instrument and thermogravimetric analyzer.The results showed that the addition of melamine expanded the thermogravimetric temperature range of composite materials,effectively reduced the thermogravimetric rate,and improved the thermal stability of composite materials.When the mass ratio of fixed silicone rubber/Mg(OH)2/hydrotalcite/melamine was 100/38/22/15,the vertical combustion grade reached V-0,the ultimate oxygen index was 30.4%,and the flame retardant performance of the composite material was excellent.
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