摘要
研究国产高回弹性丁腈橡胶(NBR)3306G生胶的微观结构及胶料性能,并与NBR3365和NBR3370C进行对比。结果表明:3种NBR在微观结构上差异不大,相对分子质量从大到小依次为NBR3370C,NBR3306G,NBR3365;NBR3306G生胶和混炼胶的门尼粘度介于NBR3370C与NBR3365之间;NBR3306G混炼胶的硫化速度较慢,焦烧时间较长,抗焦烧性能较好;NBR3306G硫化胶具有较高的拉伸强度和拉断伸长率、较好的回弹性和抗压缩永久变形性能,但耐油性能略差。
The microstructure of the raw rubber and the properties of the compound of domestic high resilience nitrile butadiene rubber(NBR)3306G were studied and compared with those of NBR3365 and NBR3370C.The results showed that there was little difference in the microstructure among the three types of NBR,and the relative molecular weights in descending order were NBR3370C,NBR3306G,and NBR3365.The Mooney viscosity of NBR3306G raw rubber and compound were between those of NBR3370C and NBR3365.The vulcanization speed of the NBR3306G compound was slower,the scorch time was longer,and the scorch resistance was better.NBR3306G vulcanizate had higher tensile strength and elongation at break,good resilience and resistance to compression permanent deformation,but slightly poor oil resistance.
作者
吕同策
李铁柱
陈东平
袁继耀
刘志琴
张为健
刘莉
LYU Tongce;LI Tiezhu;CHEN Dongping;YUAN Jiyao;LIU Zhiqin;ZHANG Weijian;LIU Li(Shandong Laiyang Changyu Sealing Products Co.,Ltd,Laiyang 265200,China;Petrochina Lanzhou Petrochemical Company,Lanzhou 730060,China;Qingdao Haishengtai Material Co.,Ltd,Qingdao 266042,China;Qingdao University of Science and Technology,Qingdao 266042,China)
出处
《橡胶科技》
CAS
2024年第9期503-507,共5页
Rubber Science and Technology
基金
兰州市科技计划项目(2022-1-6)。
关键词
丁腈橡胶
物理性能
回弹性
压缩永久变形
NBR
physical property
resilience
compression permanent deformation
