热硫化硅橡胶耐烧蚀性能的研究  

Study on Ablation Resistant Properties of HTV

作　　者：杨磊[1] 刘艳辉[1] 左继成[1] 李勇[2] 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]东北大学材料与冶金学院,辽宁沈阳110189

出　　处：《沈阳理工大学学报》2015年第5期19-23,27,共6页Journal of Shenyang Ligong University

摘　　要：固体火箭发动机燃烧室隔热材料要求极为苛刻,具有较高耐烧蚀性能是最基本的条件。以甲基乙烯基硅橡胶(VMQ)和甲基苯基乙烯基硅橡胶(PVMQ)为基胶,与白炭黑、碳纤维采用双辊开炼机混炼,模压硫化成型,制备出硅橡胶耐烧蚀复合材料,通过烧蚀实验和力学性能分析,实验结果表明:当PVMQ和VMQ分别以25%和75%的质量配比时制备出的硅橡胶耐烧蚀性能最好;白炭黑的加入可以提高硅橡胶的耐烧蚀性和力学性能,加入30g白炭黑综合效果较好;加入碳纤维明显提高硅橡胶复合材料的耐烧蚀性能,但不利于力学性能,6mm碳纤维效果好于3mm碳纤维。Insulations for a solid rocket motor chamber are extremely demanding. And high ablation resistance is the essential performance requirement. The VMQ and PVMQ were used as base gum, and were mixed with white carbon black, carbon fiber in open mill, vul- canization molding silicone rubber ablation resistant composite material was prepared. Through the analysis of the ablation and mechanical properties can find out that：The per- formance of the ablation resistance property of silicone rubber was the best when 25% PVMQ and 75% VMQ are mixed. The ablation resistance and the mechanical property of silicone rubber can be proved with the mixture of white carbon black. And within 30g white carbon black composite effect is relatively better. The ablation resistance of silicone rubber composites was obviously increased after mixed with the carbon fibers. But that shows detri- mental effects on mechanical properties of it. And the carbon fibers with length of 6mm is better than 3mm.

关 键 词：热硫化硅橡胶 白炭黑 碳纤维 混炼 耐烧蚀. 

分 类 号：TQ333.93[化学工程—橡胶工业]