高耐磨炭黑填充型粉末SBR研究Ⅲ.硫化胶的热空气老化性能  

Study on HAF filled powdered SBR Ⅲ. Heat ageing properties of vulcanisates

作　　者：王炼石[1] 胡洪军[1] 周奕雨[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《合成橡胶工业》2004年第1期6-9,共4页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(59773010);广东省自然科学基金资助项目(970554)。

摘　　要：研究了高耐磨炭黑(N330)填充型粉末丁苯橡胶犤P(SBR/N330)犦硫化胶在100℃×48h及72h条件下的热空气老化性能,并与块状SBR/N330机械混炼胶的硫化胶进行了对比。采用RPA2000型橡胶加工性能分析仪测定了硫化胶的损耗因子(tanδ)。结果表明,包覆剂可使P(SBR/N330)硫化胶老化后的拉伸强度和扯断伸长率具有较高的保持率,并提高了硫化胶的压缩疲劳温升及tanδ,但硫化胶的耐磨性能和耐压缩永久变形性能下降。随着包覆剂含量的增加,硫化胶上述性能的变化趋势增强。当包覆剂为5质量份时,老化前后P(SBR/N330)硫化胶的耐屈挠疲劳性能较强。The N 330 filled powdered SBR vulcanisates(SBR/N 330)were compared with the aged vulcanisates of mixed black SBR/N 330 under heat ageing test at 100 ℃for 48 h and 72 h respectively. The tan δwas determined by rubber processing behavior analyzer.The results showed that the presence of encapsulant enabled the aged P(SBR/N 330)vulcanisates had higher retention of tensile strength and elongation at break,but decreased their abrasion and compression-set resistance, and increased the heat build-up and tan δ.The changes in the above mentioned properties became more and more obvious when the content of the encapsulant increased.When the content of the encapsulant was 5 phr,the flexing fatigue resistance of the unaged and aged vulcanisates increased.

关 键 词：高耐磨炭黑 填充型粉末丁苯橡胶 硫化胶 热空气老化性能 SBR 

分 类 号：TQ333.1[化学工程—橡胶工业]