摘要
研究了金属氧化物(MgO/ZnO)、过氧化物(2,5-二甲基-2,5二叔丁基过氧化己烷,简称双-25)、硫黄、三聚硫氰酸(TCY)4种硫化体系对氯丁橡胶硫化特性、物理机械性能、耐热老化性能和压缩永久变形性能的影响。结果表明:所选4种硫化体系都能较好地硫化氯丁橡胶;双-25和硫黄有较快的硫化速度;TCY和金属氧化物的硫化速度较慢,但二者有很好的抗硫化返原性;硫黄硫化的CR硫化胶拉伸强度较大,但耐热老化性能欠佳;TCY和双-25硫化胶的物理性能能达到金属氧化物的水平,且老化性能较好;金属氧化物有较优的综合力学性能;含TCY的硫化胶有较小高温压缩永久变形。
The 4 curing systems including MgO/ZnO,DCP,S and TCY on the curing characteristics,physic-mechanical properties,heat aging stability and compression set of CR vulcanizate were investigated. The results showed that the 4 curing systems could all cure CR very well; The curing speeds of DCP or S were big;The curing speeds of TCY or MgO/ZnO were slow,but their curing reversion was good;The CR vulcanizate cured with S had a good tensile strenglh, and the heat aging stability was not good;The mechanical properties of CR vulcanizate cured with TCY or DCP were similar to MgO/ZnO,and their vulcanizate had a good aging resistance; The CR vulcanizate cured with MgO/ ZnO had good mechanical properties;The CR vulcanizate cured with TCY had small compression set at high temperature.
出处
《特种橡胶制品》
2009年第1期36-39,59,共5页
Special Purpose Rubber Products
