摘要
以二乙炔基苯、双(二甲氨基)二甲基硅烷为原料,乙腈为溶剂,通过氯化锌催化实现单步硅烷化合成含硅芳炔树脂。研究结果表明,乙腈做溶剂,二乙炔基苯与双(二甲氨基)二甲基硅烷投料比为9∶8(摩尔比),ZnCl_(2)相对于炔过量0.65倍,回流反应11h效果最佳,收率高达90%以上;制备的含硅芳炔树脂在室温下呈流动状态,加工性能良好,加工温度为40~180℃,加工窗口为140℃;固化后的含硅芳炔树脂,在N_(2)气氛下热分解5%时的温度(T_(d5))为587℃。
A novel one-step synthesis of silicon-containing arylacetylene resin(PSA)was developed via the direct silylation of diethynylbenzene(DEB)and bis(dimethylamino)dimethylsilane.The results show that the optimum reaction conditions:acetonitrile as solvent,mole feed ratio of alkyne and amino is 9:8,the amount of zinc overdose 0.65 times compared with alkynes,and reaction time the processing window is about 140℃.The reaction 11 h.The processing temperature is from 40℃to 180℃,and yield reaches up to 90%.The properties of the resulting resin were investigated.The resin is in a state of flow and has good processing performance at room temperature.The cured resin performs good heat resistance,the decomposition temperature at 5%mass loss in nitrogen is 587℃.
作者
姜欢
邓诗峰
阮湘政
Huan Jiang;Shifeng Deng;Xiangzheng Ruan(Schol of Materials Science and Engineering,Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education,East China University of Science and Technology,Shanghai 200237,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2017年第11期18-21,28,共5页
Polymer Materials Science & Engineering
关键词
含硅芳炔树脂
单步硅烷化
氯化锌
双(二甲氨基)二甲基硅烷
silicon containing arylacetylene
one-step silylation
zinc chloride
bis(dimethylamino)dimethylsilane
