低苯基硅橡胶压缩永久变形性能的研究  

Study on Compression Set of Low-Phenyl Silicone Rubber

作　　者：焦冬生[1] 苏正涛[1] 彭亚岚[1] 孙霞容[1] 刘佳丽[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《有机硅材料》2014年第4期285-287,共3页Silicone Material

摘　　要：比较了不同捏合工艺下热硫化低苯基硅橡胶的压缩永久变形性能。发现捏合时间对低苯基硅橡胶的压缩永久变形性能有显著影响。随着捏合时间的延长,压缩永久变形性能先降后增,当捏合时间达到150 min时,压缩永久变形性能趋于稳定;继续延长捏合时间,压缩永久变形性能变大;随着热空气老化温度的升高,低苯基硅橡胶的压缩永久变形变大,在300℃×12 h条件下压缩永久变形可达100%,基本丧失了回弹能力;随着热空气老化时间的增加,低苯基硅橡胶压缩永久变形变大,在200℃×1 200 h、250℃×72 h、300℃×12 h老化后,低苯基硅橡胶的压缩永久变形达到100%,基本丧失了回弹能力。The compression sets of high temperature vulcanized low-phenyl silicone rubber in different compression kneading process was compared , and it was found the kneading time has a significant effect on the compression set .As the kneading time increases , the compression set performance first improves and then de-teriorates.When the kneading time reaches 150 min, the rubber ’ s compression set keeps stable .If the kneading time continues to increase , the rubber ’ s compression will increase again .As the air aging tempera-ture rises, the rubber ’ s compression becomes larger .The compression set of the low-phenyl silicone rubber achieves 100%at after aging at 200℃ ×1 200 h, or 250℃ ×72h, or 300℃×12h, loss of resilience.

关 键 词：低苯基 硅橡胶 压缩永久变形 

分 类 号：TQ333.93[化学工程—橡胶工业]