高结合丙烯腈量丁腈橡胶4105与同类产品性能对比  

Performance comparison of nitrile rubber 4105 with high-bound acrylonitrile content and similar products

作　　者：胡海华 吴宇 徐典宏 赵洪国 黄溪岱 何连成 龚子情 周雷 HU Hai-hua;WU Yu;XU Dian-hong;ZHAO Hong-guo;HUANG Xi-dai;HE Lian-cheng;GONG Zi-qing;ZHOU Lei(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina/Synthetic Rubber Engineering Research Renter of CPCIF/Synthetic Rubber Engineering Technology Research Center of Gansu Province,Lanzhou 730060,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心/中国石油和化学工业联合会合成橡胶工程研究中心/甘肃省合成橡胶工程技术研究中心,兰州730060

出　　处：《合成橡胶工业》2024年第6期480-484,共5页China Synthetic Rubber Industry

基　　金：中国石油重大科技专项[2020 E-2802(GF)]。

摘　　要：对国产高结合丙烯腈量丁腈橡胶(NBR)产品NBR 4105、NBR 3604和NBR 4155及进口产品N220 S生胶的微观结构和分子量及其分布,混炼胶的硫化特性和加工性能,硫化胶的物理机械性能、耐磨性能和耐热氧老化性能等进行了对比,同时研究了4种NBR和NBR 3604/NBR 4105并用胶在油田用钻井泵阀胶皮中的应用情况。结果表明,NBR 4105的重均分子量和数均分子量均略低于其他3种NBR,分子量分布略窄且与N 220 S相当,结合丙烯腈量最高;NBR 3604中反式-1,4-结构含量最低、顺式-1,4-结构含量最高。4种NBR焦烧时间基本相同,NBR 3604硫化速率最慢,NBR 3604和NBR 4105的加工性能较N 220 S和NBR 4155略差,其中NBR 3604加工性能最差。NBR 3604硫化胶拉伸强度和300%定伸应力均略高、压缩永久变形较小、耐磨性能最好,NBR 4105硫化胶耐热氧老化性能最好。NBR 3604/NBR 4105并用胶适宜于制造综合性能更优的油田用钻井泵阀胶皮。Microstructures,molecular weights and their distributions of domestic nitrile rubber(NBR)products with high bound acrylonitrile content NBR 4105,NBR 3604 and NBR 4155 and imported pro-ducts N 220 S raw rubber,curing characteristics and processabilities of compounds,physical and mechanical properties,abrasion resistance,and thermal-oxidative aging resistance of vulcanizates were compared,and the application of four kinds of NBR and NBR 3604/NBR 4105 blend in oilfield drilling pump valve rubber were also explored.The results showed that weight-average molecular weight and number-average molecular weight of NBR 4105 were slightly lower than those of the other three kinds of NBR,molecular weight distribution of NBR 4105 was slightly narrower and comparable to that of N 220 S,and bound acrylonitrile content of NBR 4105 was the highest.NBR 3604 had the lowest trans-1,4-unit content and the highest cis-1,4-unit content.Scorch time of the four kinds of NBR were basically the same,NBR 3604 had the slowest vulcanization rate,the processabilities of NBR 3604 and NBR 4105 were slightly worse than those of N 220 S and NBR 4155 with of NBR 3604 having the worst processability.Tensile strength and modulus at 300%of NBR 3604 vulcanizate were slightly higher,it had smaller abrasion resistance and the smallest compression permanent set,and NBR 4105 vulca-nizate had the best thermal-oxidative aging resistance.NBR 3604/NBR 4105 blend was suitable for the manufacture of oilfield drilling pump valve rubber with better comprehensive performance.was.

关 键 词：丁腈橡胶 高结合丙烯腈量 物理机械性能 加工性能 老化性能 压缩永久变形 耐磨性能 油田用密封件 

分 类 号：TQ333.7[化学工程—橡胶工业]