中文摘要：

用二甲基亚砜、尿素、醋酸钾和氨基硅烷等化合物对高岭土进行改性,用作不饱和聚酯树脂（UPR）的阻燃剂,利用锥形量热法研究了不同改性高岭土对UPR的阻燃抑烟性能,用扫描电镜和热重分析仪研究了UPR燃烧后残炭的微观形貌和阻燃机理.结果表明,改性高岭土能提高UPR的阻燃性能,其中尿素改性高岭土的阻燃抑烟性最好,提高UPR热稳定性的效果最佳,其热释放速率峰值、总生烟量、CO和CO_2产率比纯UPR分别降低了14.9%,59.1%,30.8%和29.6%;其次是氨基硅烷改性高岭土,二甲基亚砜改性高岭土和醋酸钾改性高岭土效果最差.

英文摘要：

Dimethyl sulfoxide, urea, potassium acetate and amino silane were used to modify kaolinite, respectively, which was applied to impart the flame retardancy of unsaturated polyester resin （UPR）. Cone calorimeter was used to study their flame retardancy and smoke suppression, SEM and TG were used to study the micro morphology of the char and flame retardant mechanism. The results showed that the flame retardant properties of UPR were improved by the modified kaolin, inside the urea modified kaolin showds the best flame retardant, smoke suppression and thermal stability, which peak of heat release rate, total smoke product, CO yield and CO2 yield reduced by 14.9%, 59.1%, 30.8% and 29.6% compared with pure UPR, respectively, followed by amino silane modified kaolin, and poor for dimethyl sulfoxide modified kaolin and potassium acetate modified kaolin.