高性能氯丁橡胶基动态密封材料的生胶和补强体系优化  

Optimization of raw rubber and reinforcement system for high-performance chloroprene rubber based dynamic sealing materials

作　　者：王慧[1] 王浩翔 张韶姣 宋仕隆 孙学红[1] WANG Hui;WANG Haoxiang;ZHANG Shaojiao;SONG Shilong;SUN Xuehong(School of Polymer Science and Engineering,Qingdao University of Science&Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《弹性体》2024年第1期69-74,共6页China Elastomerics

基　　金：山东省自然科学基金项目(ZR2021ME106)。

摘　　要：为了提高氯丁橡胶(CR)基动态密封材料的综合性能,通过改变生胶和补强体系,考察了并用顺丁橡胶(BR)和白炭黑对材料耐疲劳性、耐老化性、耐磨性和弹性等主要性能指标的影响。结果表明,并用BR后,胶料硫化速率、拉断伸长率、回弹性、耐磨性以及动态疲劳性能均有改善,但撕裂强度、耐热空气老化性能变差,CR与BR的最佳并用质量比为70/30;并用白炭黑后,胶料的拉伸强度、撕裂强度、硬度、定伸应力、耐磨性提高,但回弹性、耐疲劳性能降低,炭黑与白炭黑并用质量比为20/20时,胶料的综合性能最佳。In order to improve the comprehensive performance of chloroprene rubber(CR)based dynamic sealing materials,the effects of blending butadiene rubber(BR)and silica on the main performance indicators of the material,such as fatigue resistance,aging resistance,wear resistance,and resilience,were investigated by changing the raw rubber and reinforcement system.The results show that the vulcanization rate,elongation at break,resilience,wear resistance,and dynamic fatigue properties of the rubber are improved after the use of BR,but the tear strength and heat resistance to air aging performance deteriorate.The optimal combined mass ratio of CR and BR is 70/30;after the addition of silica,the tensile strength,tear strength,hardness,modulus,and wear resistance of the rubber material are improved,but the resilience and fatigue resistance are reduced.The comprehensive performance of the rubber material is best when the mass ratio of carbon black and silica is 20/20.

关 键 词：氯丁橡胶 动态密封材料 氯丁橡胶/顺丁橡胶并用 炭黑/白炭黑并用 高性能 

分 类 号：TQ333.5[化学工程—橡胶工业]