混炼工艺对杜仲胶/天然橡胶并用胶性能的影响  

Effect of Mixing Processes on Properties of EUG/NR Blends

作　　者：孙泉 邓琳僡 向万坤 刘昊北 赵秀英[1] SUN Quan;DENG Linhui;XIANG Wankun;LIU Haobei;ZHAO Xiuying(Beijing University of Chemical Technology,Beijing 100029,China;Standards and Quality Department of China Building Materials Federation,Beijing 100831,China)

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]中国建筑材料联合会标准质量部,北京100831

出　　处：《橡胶工业》2023年第10期817-824,共8页China Rubber Industry

摘　　要：研究混炼工艺对不同并用比的杜仲胶(EUG)/天然橡胶(NR)并用胶性能的影响。结果表明:当EUG用量不大于30份时,EUG/NR并用胶无明显的结晶,EUG硫化胶的结晶为β晶型;与干法混炼工艺下EUG/NR并用胶相比,湿法混炼工艺下EUG/NR并用胶的Payne效应弱,炭黑分散性更好;随着EUG用量的增大,EUG/NR并用胶的拉伸强度减小;湿法混炼工艺下EUG/NR并用胶的伸张疲劳寿命延长,当EUG用量为20份时干法和湿法混炼工艺下EUG/NR并用胶的伸张疲劳次数均最大。The effect of mixing processes on the properties of Eucommia ulmoides gum(EUG)/natural rubber(NR)blends with different blend ratios was studied.The results showed that,when the amount of EUG was no more than 30 phr,there was no obvious crystallization in the EUG/NR blends.The crystalline structure of EUG vulcanizate wasβcrystal form.Compared with EUG/NR blend under dry mixing process,the Payne effect of EUG/NR blend under wet mixing process was weak and the carbon black dispersion was better.With the increase of the amount of EUG,the tensile strength of EUG/NR blend decreased.Under the wet mixing process,the tensile fatigue life of EUG/NR blend was extended.When the amount of EUG was 20 phr,the tensile fatigue lives of EUG/NR blends under dry and wet mixing processes were both the largest.

关 键 词：混炼工艺 杜仲胶 天然橡胶 炭黑分散性 结晶性 伸张疲劳性能 

分 类 号：TQ330.63[化学工程—橡胶工业]