裂解制备Si-C-O梯度复合材料的热流密度计算  

Calculation of Heat Flux for Manufacturing Si-C-O FGM by Pyrolyzing the Surface of Polysilicone Preceramic

作　　者：宋仁义[1] 王钧[1] 张联盟[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《济南大学学报（自然科学版）》2005年第3期204-206,共3页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金资助项目(50171049)

摘　　要：对聚硅氧陶瓷先驱体表面加载高密度热流时裂解过程进行了分析,并对温度梯度计算模型进行了合理设计;对聚硅氧树脂SAR-2的裂解进行了DSC-TG分析实验,测试了先驱体及转化陶瓷与计算有关的物性参数。最后对表面裂解制备Si-C-O梯度复合材料所需热流密度进行了优化计算。结果表明:热流密度q=600kW·m-1,加热时间t=2-4s为制备梯度复合材料的最佳工艺参数。The pyrolytic process was analyzed, and the calculation model was designed when heating the surface of polysilicone preceramic (SAR-2) by intensive heat flux. The pyrolytic process and the weight loss of pyrolyzing SAR-2 were tested by DSC-TG test, and the parameters were also measured in order to calculate the temperature gradient. The calculation results show that the most suitable heat flux for manufacturing Si-C-O FGM is 600 kw·m^-2 with heating time of 2-4s.

关 键 词：热流密度 陶瓷梯度 复合材料 聚硅氧树脂 

分 类 号：TU599[建筑科学—建筑技术科学]