原位聚合制备PS/高岭土复合材料及其性能研究

Study on Properties of In-situ Polymerization PS/Kaolin Composite and Its Preparation

采用二甲基亚砜改性高岭土,然后通过原位聚合的方法制备聚苯乙烯(PS)/插层高岭土复合材料。结果表明:改性高岭土层间距增大,且与PS复合后,高岭土层间距进一步增大,部分高岭土层片状结构被破坏;复合过程中苯乙烯单体能成功地取代二甲基亚砜并在高岭土层间聚合;高岭土的加入提高了PS的热稳定性;复合材料的氧指数和吸水率也有所提高。

Kaolin was modified using dimethylsulfoxide and polystyrene（PS）/intercalated kaolin composites were prepared by in-situ polymerization. The results show that： the layer spacing of modified kaolin increases, and the layer spacing of modified kaolin compounded with PS increases further, and part of the kaolin layers lamellar structure is destroyed. Styrene monomer replaces dimethylsulfoxide successfully, and polymerizes in the inner layer during the compound process. The thermal stability of PS improves with the addition of kaolin, and then oxygen index and water absorption of composite increase too.