硅橡胶云母氧化硅系热性能和陶瓷化机理硅橡胶云母氧化硅系热性能和陶瓷化机理.pdfVIP

Material Sciences 材料科学, 2014, 4, 246-252 Published Online November 2014 in Hans. /journal/ms /10.12677/ms.2014.46035 Thermal Property and Ceramic Mechanism of Silicone/Mica/Silicone Oxide Xi Zhang, Yan Qin* School of Materials Science and Engineering, Wuhan University of Technology, Wuhan * Email: qinrock@ th th th Received: Oct. 26 , 2014; revised: Nov. 13 , 2014; accepted: Nov. 25 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract In this paper, methyl vinyl Phenyl Polysiloxane rubber (PVMQ) ablative composite filled with mica and silicone oxide was prepared. Its thermal properties were tested by TG-DSC analysis from room temperature to 1000˚C. After it was fired at different temperatures, the products were ana- lyzed by Fourier transform infrared spectrometer and X-ray diffraction. The results showed that when the addition of mica was 40, the residual rate at 1000˚Cwas 66.21%. When the temperature was above 600˚C, the filler and organic silicon rubber started to transform from organic to inor- ganic. As temperature rose, the extent of porcelain was gradually deepened. So the ceramic me- chanism of the composite could be described that the silicon oxide decomposed from silicon rub- ber reacted with mica. Then eutectic mixture which had a bridge effect was formed at the edge of fillers and the ceramic products were obtained when cooled down. Keywords Silicone Rubber, Ceramization, Mechanism 硅橡胶/云母/氧化硅系热性能和陶瓷化机理 张 曦，秦 岩* 武汉理工大学，材料科学与工程学院，武汉 * Email: qinrock@ *通讯作者。