功能型核壳微球的制备及其对环氧树脂阻燃特性研究 邢云亮，李云涛，赵春霞 3，何达，岳杰 （1.西南石油大学油气藏地质及开发工程国家重点实验室，四川 成都 610500；2.西南石油大学 材料科学与工程学院，四川 成都 610500； 西南石油大学新能源研究中心，四川 成都 610500） 摘要：本文采用原位聚合法制备了聚磷酸铵(APP)/聚苯乙烯(PSt)核壳微球（CSP）。采用透射电镜（TEM ）和热重 分析（TGA）研究了 CSP 核壳结构和热性能。通过 TGA、极限氧指数（LOI）、锥形量热(Cone) 分析了 CSP 对环 氧树脂热性能和阻燃性能的影响。结果表明，CSP 降低了 EP 的初始分解温度，促进材料高温阶段成炭。当 CSP 添加量为 15wt%时，EP 极限氧指数（LOI）由 22 提高到 28.5，同时，热释放速率峰值由 1163.1Kw/m2 降低到 337.2Kw/m2。Cone 测试后炭层分析结果显示，CSP 可促进 EP 在燃烧过程中形成外表面致密的膨胀炭层。 关键词：核壳微球；聚磷酸铵；聚苯乙烯；阻燃；环氧树脂 Synthesis of Functional Core-Shell Micro-Particles and Its Flame Retardancy Characteristics in Epoxy Resin (1. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, 610500, China; 2. Department of Material Science and Engineering, Southwest Petroleum University, Chengdu, 610500, China; 3. New Energy Center, Southwest Petroleum University, Chengdu 610500, China) Abstract：Functional ammonium polyphosphate (APP)/poly (styrene) (PSt) core-shell microspheres (CSP) were synthesized via in-situ radical polymerization. The effects of CSP on the flame-retardant properties of the epoxy resin (EP) were studied. The morphology and thermal stability of CSP were characterized by transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The effects of CSP on flame retardant properties, thermal properties and heat release rate (HRR) of EP were investigated by limiting oxygen index (LOI), thermogravimetric analysis (TGA) and cone calorimeter. The test results showed that CSP could reduce the initial decomposition temperature (Tinitial) of epoxy resin, and promoted becoming carbon in high temperature. When epoxy resin matrix were added with 15% CSP , the LOI increased from 22 to 28.9, the peak heat release rate reduced from 1163.1 Kw/m2 to 337.2 Kw/m2. The cone calorimeter analys is showed that CSP could promote epoxy resin to form char layer owning compacting outer surface and expansion internal