非过渡金属催化芳香二炔和二硅烷基苯制备聚(硅苯-芳炔)树脂

以芳香基双炔和1,4-二(二甲基硅烷基)苯为原料,乙二醇二甲醚(DME)为溶剂,NaO H为催化剂,空气氛围下,一步反应制备得到含硅芳炔树脂(SPAR).并进一步探讨了催化剂、反应溶剂、温度、时间对聚合反应的影响.通过凝胶渗透色谱(GPC)、红外光谱、核磁分析确定产物的分子量和化学结构.实验结果表明:使用20 mol％的NaO H为催化剂,单体比例为1:1,在1 mol/L的DME溶剂中,80℃反应12 h得到最好的聚合效果.该聚合方法简单、价廉,无需复杂的后处理,且得到的产物具有较好的热稳定性.

Preparation of Poly(Silicon-phenyl-arylacetylene)Resin by Polymerizing Dialkynylarylenes and Phenylsilane Catalyzed by Alkali Metal Hydroxide

A new method for preparing silicon-containing phenyl arylacetylene resin (SPAR)has been developed using aromatic dialkyne derivatives and 1,4-bis(dimethylsilyl)benzene as raw materials in a one-step reaction in air.In addition,NaOH,a nontransition metal catalyst,was used to achieve high yield polymerization.The experimental conditions affecting polymerization,including monomer species,catalyst dosage, polymerization time, reaction solvent and temperature were investigated. Gel permeation chromatography,nuclear magnetic resonance and Fourier transform infrared spectroscopy were used to determine the molecular weight and structure of the SPARs.Thermogravimetric analysis revealed their thermal stability,and the results indicated that most of them had good thermal stability.This polymerization method that employs simple preparation method,less expensive catalysts,and less complicated posttreatment method will provide an efficient preparation of functional SPARs.