摘要
对比研究3种牌号羧基丁腈橡胶(XNBR)生胶的微观结构及胶料的物理性能。结果表明:XNBR3304和XNBR3450X的丙烯腈单元和丁二烯单元分布较均匀;XNBR1072CG的丙烯腈单元和丁二烯单元分布不均匀;XNBR 3304生胶和混炼胶的门尼粘度差值较小,分子链可能存在长支链支化部分,硫化胶的耐热氧老化和耐油性能较好;XNBR 1072CG的反式-1,4-结构含量较大,玻璃化转变温度较高,硫化胶的弹性较好;XNBR 3450X硫化胶的硬度、定伸应力和拉伸强度较高,耐磨性能较好,压缩永久变形小。
The microstructure of the raw rubber and the physical properties of the compound of three grades of carboxylated nitrile rubber(XNBR)were studied.The results showed that,acrylonitrile and butadiene units were uniformly distributed in XNBR 3304 and XNBR 3450X,while their distribution was uneven in XNBR 1072CG.The difference in Mooney viscosity between raw rubber and mixed compound of XNBR 3304 was relatively small,indicating the possible presence of long-chain branching in its molecular structure.The vulcanizate of XNBR 3304 had good heat-oxygen aging resistance and oil resistance.XNBR 1072CG exhibited a larger trans-1,4-structure,a higher glass transition temperature,and good elasticity of the vulcanizate.The vulcanizate of XNBR 3450X demonstrated high hardness,modulus at given elongation,tensile strength,good wear resistance and a small compression set.
作者
刘晓
陈东平
高志兴
张国岗
冯晓萌
李铁柱
张保岗
LIU Xiao;CHEN Dongping;GAO Zhixing;ZHANG Guogang;FENG Xiaomeng;LI Tiezhu;ZHANG Baogang(Qingdao Haishengtai Materials Co.,Ltd,Qingdao 266042,China;Petrochina Lanzhou Petrochemical Company,Lanzhou 730060,China;Qingdao University of Science and Technology,Qingdao 266042,China)
出处
《橡胶科技》
2025年第6期318-321,共4页
Rubber Science and Technology
基金
甘肃省科技计划资助项目(22ZD6GA013)。
作者简介
刘晓(1975-),男,山东潍坊人,青岛海晟泰材料有限公司工程师,学士,主要从事聚氨酯、热塑性弹性体和功能橡胶材料的应用研究;通信联系人:李铁柱,litiezhu@petrochina.com.cn;通信联系人:张保岗,zbg0302@163.com。
