Si/P/B三元协效阻燃剂的制备及在聚碳酸酯中的应用
尚佳锐 , 辛华 , 王召帅 , 周怡琳 , 安秋凤
现代化工 ›› 2026, Vol. 46 ›› Issue (10) : 124 -131.
Si/P/B三元协效阻燃剂的制备及在聚碳酸酯中的应用
Preparation of Si/P/B ternary synergistic flame retardants and their application in polycarbonate
以二苯基二甲氧基硅烷、4-乙烯基苯硼酸和9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO),经三步反应制得Si/P/B三元协效阻燃剂PBPS-DOPO,并熔融共混制备PBPS-DOPO/PC复合材料。通过FT-IR、XPS表征结构,利用TG、DSC、LOI、UL-94和锥形量热考察其热稳定性和阻燃性。结果表明,添加量3%时综合力学性能最优,UL-94达V-0级,LOI为29.6%,放热与产烟量显著下降。机理上,Si/P促进基体脱水成炭,Si/B协同催化形成玻璃化保护层,隔绝氧气,赋予PC优异阻燃性。该研究为多元协同阻燃剂开发及应用提供新思路。
A Si/P/B ternary synergistic flame retardant (PBPS-DOPO) was prepared through a three-step reaction using diphenyldimethoxysilane,4-vinylphenylboronic acid,and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as raw materials,and PBPS-DOPO/PC composites were prepared by melt blending.The structure was characterized by FT-IR and XPS.Its thermal stability and flame retardancy were investigated by TG,DSC,LOI,UL-94,and cone calorimetry.The results showed that at an addition amount of 3%,the comprehensive mechanical properties were optimal,with UL-94 reaching V-0 grade,LOI of 29.6%,and significantly reduced heat release and smoke production.Mechanistically,Si/P promote dehydration and char formation of the matrix,while Si/B synergistically catalyze the formation of a glassy protective layer,isolating oxygen,thereby endowing PC with excellent flame retardancy.This study provides new ideas for the development and application of multicomponent synergistic flame retardants.
聚碳酸酯 / 协效阻燃剂 / 阻燃材料 / 熔融共混 / 复合材料
polycarbonate / synergistic flame retardant / flame retardant material / melt blending / composite materials
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陕西省科技创新团队计划项目(2024RS-CXTD-46)
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