摘要
研究储存时间对丁腈橡胶(NBR)性能的影响。结果表明:随着NBR储存时间的延长,其生胶的门尼粘度降低,凝胶含量增大,胶料的硬度、撕裂强度和耐油性能变化不大;NBR储存时间超过2年后,其生胶的凝胶含量迅速增大,胶料的焦烧时间缩短,拉伸强度和拉断伸长率大幅降低,耐低温性能略有降低。NBR的储存时间不宜超过2年。
The effect of storage time on the properties of nitrile-butadiene rubber（NBR）was studied. The results showed that,with the extension of storage time,the Mooney viscosity of raw rubber decreased,gel content increased,and the hardness,tear strength and oil resistance of the compounds changed little. When the storage period was more than two years,the gel content of raw rubber increased rapidly,the scorch time of the compounds was shortened,the tensile strength and elongation at break were reduced greatly,and low temperature resistance decreased slightly. The storage time of NBR should not exceed two years.
作者
张元寿
胡海华
赵洪国
周雷
吴宇
ZHANG Yuanshou;HU Haihua;ZHAO Hongguo;ZHO U Lei;WU Yu(CNPC Lanzhou Petrochemical Research Institute,Lanzhou 730060,Chin)
出处
《橡胶科技》
2018年第5期37-39,共3页
Rubber Science and Technology
关键词
丁腈橡胶
储存时间
凝胶含量
门尼粘度
耐低温性能
nitrile-butadiene rubber
storage time
gel content
Mooney viscosity
low temperature resistance
