羰基铁粉/硅橡胶复合体系的物理性能研究  

Study on Physical Properties of Carbonyl Iron Powder/Silicone Rubber System

作　　者：公建辉[1] 丘泰[1] 沈春英[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《材料科学与工程学报》2006年第5期718-721,共4页Journal of Materials Science and Engineering

基　　金：国防化工新材料重大科研基金资助项目

摘　　要：以微米级羰基铁粉为填充剂,硅橡胶为基体,制备了单组分室温硫化的复合橡胶。系统研究了羰基铁粉添加量对复合橡胶机械性能、热空气老化性能和耐热稳定性的影响;利用扫描电镜探讨了复合材料的微观结构。结果表明,复合橡胶的密度随羰基铁粉体积分数线性增大,拉伸强度增大,韧性和弹性降低;经150℃,96h老化复合橡胶机械性能基本不变,拉伸强度略有升高;200℃复合橡胶中的羰基铁粉开始氧化,368℃橡胶基体开始分解。One-part RTV silicone rubber composite filled with carbonyl iron powder （CIP） was prepared. Effects of CIP amount on mechanical, hot air aging and thermal stability properties of the composite were studied systemically and the microstructure was analyzed with SEM. The results indicate that with CIP filling amount increasing, its density raises linearly, the tensile strength increases and elasticity and tenacity descend. Mechanical properties of the composite are unchanged and the tensile strength gains a little after 150℃, 96h aging. The CIP in the composite starts oxidation at 200℃ and the matrix decomposes at 368℃.

关 键 词：羰基铁粉 硅橡胶 物理性能 热空气老化 交联度 

分 类 号：TB33[一般工业技术—材料科学与工程]