含酰亚胺环聚硅氧烷的制备和热学性能研究

Preparation and Thermal Performance of Polysiloxane Containing Imide Ring

在speier催化剂作用下,将双酚A型二醚二烯烃(BPADA-AA)与1,1,3,3-四甲基二硅氧烷反应,合成一种含酰亚胺环聚硅氧烷。以酰亚胺环硅烷偶联剂(BPADA-AA-TES)为原料,与水反应制备特殊POSS结构的含酰亚胺环聚硅氧烷。采用傅里叶变换红外光谱仪(FTIR)、热重分析仪(TG)和差示扫描量热仪(DSC)对两种聚硅氧烷的结构和性能进行表征。结果表明:含酰亚胺环聚硅氧烷的玻璃化转变温度(Tg)为251℃,10%分解温度(Td10%)为474℃。带有POSS结构的含酰亚胺环聚硅氧烷的Tg为211℃,Td10%为452℃。含酰亚胺环的聚硅氧烷的热学性能优于POSS结构的含酰亚胺环聚硅氧烷。合成的含酰亚胺环聚硅氧烷具有较好热学性能,可作为原位聚合工艺的涂层材料。

An polysiloxane containing imide ring was synthesized by the reaction of bisphenol A diether diene(BPADAAA) with 1,1,3,3-tetramethyldisiloxane under the action of speier catalyst.The polysiloxane containing imide ring with special POSS structure was prepared by the reaction of imide ring silane coupling agent(BPADA-AA-TES) with water.The structure and performance of the two polysiloxanes were characterized by Fourier transform infrared spectroscopy(FTIR),thermogravimetric analyzer(TG) and differential scanning calorimeter(DSC).The results show that the glass transition temperature(Tg) of polysiloxane containing imide ring is 251 ℃,and the 10% decomposition temperature(Td10%)is 474 ℃.The Tg and Td10% of polysiloxane containing imide ring with POSS structure are 211 ℃ and 452 ℃,respectively.The thermal performance of polysiloxane containing imide ring are better than those of polysiloxane containing imide ring with POSS structure.The synthesized polysiloxane containing imide ring has good thermal performance and can be used as a coating material for in-situ polymerization process.