不同环境下杜仲胶/丁腈橡胶共混胶的性能  

Properties of eucommia ulmoides gum/nitrile rubber blends under different environment

作　　者：王琎[1] 康海澜[1] 杨凤[1,2] 方庆红[1,2] 

机构地区：[1]沈阳化工大学材料科学与工程学院,沈阳110142 [2]沈阳化工大学辽宁省高校高分子材料应用技术重点实验室,沈阳110142

出　　处：《合成橡胶工业》2017年第4期315-319,共5页China Synthetic Rubber Industry

摘　　要：将杜仲胶(EUG)与丁腈橡胶(NBR)共混,研究了共混胶的硫化特性、结晶行为、力学性能以及不同环境下的老化性能。结果表明,当EUG用量为10份(质量,下同)时,EUG/NBR混炼胶的焦烧时间和正硫化时间以及硫化胶的拉伸强度和扯断伸长率均达到最大值。添加一定量的EUG对NBR硫化胶的耐盐雾和耐紫外线性能均能起到一定程度的改善作用,而共混硫化胶的硬度和耐油性能均在EUG用量为20份时体现最佳值。差示扫描量热分析表明,上述现象产生的原因在于共混硫化胶中存在的微晶及EUG与NBR的相容性所致。The eucommia umoides gum （EUG）/ nitrile rubber （NBR） blends were prepared by blending, and the curing characteristics, crystallization behavior, mechanical properties, as well as aging resistance of blending under different environ- ments were investigated. The results showed that both scorch time and optimum cure time of the compound, also tensile strength and elongation at break of the vulcanizates were reached the maximum value when the amount of EUG was 10 phr. Adding a certain amount of EUG played a part in improving salt spray resistance and ultraviolet aging resistance of NBR vulcanizates. Both hardness and oil resistance of the blends exhibited optimum value when EUG was 20 phr. This phenomenon could be interpret by differential scanning calorimetry that there was mi- crocrystalline in the vulcanizates and the compatibility of EUG and NBR.

关 键 词：杜仲胶 丁腈橡胶 共混胶 力学性能 耐盐雾性能 耐紫外线性能 耐油性能 

分 类 号：TQ330.1[化学工程—橡胶工业]