摘要
研究了温度和各成分的质量比对聚碳硅烷/二乙烯基苯和聚碳硅烷/二乙烯基苯/二甲苯先驱体溶液黏度的影响,以及质量比对其二者先驱体交联率和陶瓷产率的影响。结果表明：聚碳硅烷/二乙烯基苯先驱体的溶液黏度随温度的升高而降低;提高二乙烯基苯的含量,可以降低先驱体的溶液黏度,改善流动性,但是会降低先驱体的交联率和陶瓷产率。聚碳硅烷/二乙烯基苯/二甲苯先驱体的溶液黏度随温度升高而逐渐降低;增加二甲苯的质量比,先驱体溶液的黏度明显降低,流动性增加;且在40-60℃范围内,当聚碳硅烷/二乙烯基苯/二甲苯质量比为10：3：2时,先驱体的溶液黏度在170-410mPa·s之间,具有良好的流动性、长时间稳定性以及较高的交联率和陶瓷产率,适宜作为碳纤维预制体的浸渍液。
The effects of temperature and composition mass ratio on the viscosity of polycarbosilane （PCS）/divinylbenzene （DVB） and PCS/DVB/Xylene precursor solution were investigated, and the effect of composition mass ratio of PCS/DVB and PCS/DVB/Xylene on the crosslinking rate and ceramic yield of the precursors were also analyzed. The results show that the viscosity of PCS/DVB precursor solution decreases with the increase of temperature. Increasing the composition ratio of DVB can reduce the viscosity and improve the fluidity of the precursor solution, but decreases the crosslinking rate and the ceramic yield. The viscosity of PCS/DVB/Xylene precursor solution decreases with the increase of temperature. The viscosity decreases, while the fluidity of the precursor solution increases with the increase of xylene ratio. When the mass ratio of PC S/DVB/Xylene is 10：3：2, the viscosity value of the precursor solution is 170-410 mPa.s at 40-450 ℃, showing a good fluidity, a long-time stability, a higher crosslinking rate and ceramic yield. This precursor solution is suitable as an impregnating liquid of carbon fiber preforms.
作者
陈智勇
李妙玲
孙卫康
张东生
徐颖强
刘建寿
程广伟
李彬
CHEN Zhiyong;LI Miaoling;SUN Weikang;ZHANG Dongsheng;XU Yingqiang;LIU Jianshou;CHENG Guangwei;LI Bin(School of Mechanical Engineering,Luoyang institute of Science and Technology,Luoyang 471023,Henan,China;Henan Van-Research Composite Materials Research Institute Co.,Ltd.,Zhengzhou 451200,China;School of Mechanical Engineering,Northwestern Polytechnical University,Xi＇an 710072,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2018年第9期1297-1303,共7页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(51475222)
河南省自然科学基金(162300410197)
河南省高等学校重点科研(17A535001、17A430024)
河南省重点研发与推广专项(182102310043)
