氢氧化铝对导热有机硅灌封胶阻燃性能的影响
Effect of Aluminum Hydroxide on Flame Retardancy of Thermally Conductive Silicone Encapsulant
王霄 1范子鉴 1王哲 1向略 1张叶琴1
作者信息
- 1. 中蓝晨光化工研究设计院有限公司,成都 610041;国家有机硅工程技术研究中心,成都 610041
- 折叠
摘要
以氢氧化铝(ATH)为阻燃填料、Al2O3为导热填料,制备了双组分有机硅灌封胶,研究了ATH粒径和用量对有机硅灌封胶性能的影响.结果表明,随着ATH粒径的增大,有机硅灌封胶的阻燃性能、黏度、热稳定性降低,热导率变化不大;随着ATH在填料中质量分数的增加,有机硅灌封胶的阻燃性能、黏度、热稳定性提高,热导率变化不大;采用不同粒径ATH制备相同热导率且垂直燃烧等级为FV-0 的有机硅灌封胶时,随着ATH粒径的增大,其最低用量增大.
Abstract
Using aluminum hydroxide(ATH)as a flame retardant and aluminum oxide(Al2O3)as a thermally conductive filler,the two-component silicone encapsulant was prepared.The effect of ATH particle size and filling amount on the properties of silicone encapsulant were investigated.The results show that the flame retardancy,viscosity and thermal stability of silicone encapsulant decrease with the increase of ATH particle size while the thermal conductivity changes little.As the mass fraction of ATH in the fillers increases,the flame retardancy,viscosity and thermal stability of the silicone encapsulant are improved,while the thermal conductivity remains the same.Using different particle sizes of ATH to prepare silicone encapsulant with the same thermal conductivity and same vertical combustion level(FV-0),the minimum filling amount of ATH increases with the increase of its particle size.
关键词
氢氧化铝/氧化铝/阻燃/有机硅灌封胶/导热性能/黏度Key words
aluminum hydroxide/alumina/flame retardant/silicone encapsulant/thermal conductivity/viscosity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据