摘要
分析表征氟橡胶(FKM)低温脆化性能的玻璃化温度(Tg)、低温回缩温度(TR10)和脆性温度(Tbri)之间的关系,研究生胶、填料、混炼工艺等对二元和三元FKM胶料低温脆化性能的影响。结果表明:FKM的Tg与TR10相近,均能反映FKM分子链的低温运动和玻璃态温度;过氧化物硫化高氟FKM胶料的耐低温性能较好,双酚硫化二元FKM胶料的耐低温性能较差;填充炭黑N774的FKM胶料耐低温性能较好;塑炼次数对FKM胶料的低温脆化性能影响小。
The relationship between the glass transition temperature(Tg),low temperature retraction temperature(TR10) and brittleness temperature(Tbri) of fluoroelastomer(FKM) was analyzed. The effects of raw rubber,fillers and mixing process on the low temperature brittlement properties of binary and ternary FKM were investigated. The results showed that,Tg of FKM was similar to Tbri,which both could reflect the low temperature motion of FKM molecular chain and glass transition temperature. The peroxide-cured FKM with high fluorine content had better low temperature resistance,and the bisphenol-cured binary FKM had worse low temperature resistance. The FKM filled with carbon black N774 had better low temperature resistance. Milling number for plastication had little effect on the low temperature brittleness of FKM.
作者
陈明伟
高前
李孔标
朱凡凡
郑添来
CHEN Mingwei;GAO Qian;LI Kongbiao;ZHU Fanfan;ZHENG Tianlai(Xiamen Elastec Corp,Xiamen 361100,China)
出处
《橡胶工业》
CAS
2019年第6期435-439,共5页
China Rubber Industry
关键词
氟橡胶
低温脆化性能
玻璃化温度
低温回缩温度
脆性温度
FKM
low temperature brittleness property
glass transition temperature
low temperature retraction temperature
brittleness temperature
