高疲劳寿命氯丁橡胶基减振材料的结构与性能  

Structure and Properties of Damping Materials with Super Fatigue Resistance Based on Chloroprene Rubber

作　　者：张新萍 张剑平 蔡磊 宗鑫 贺爱华[1] ZHANG Xinping;ZHANG Jianping;CAI Lei;ZONG Xin;HE Aihua(Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization,Key Laboratory of Rubber-plastics ofMinistry of Education,School of Polymer Science and Engineering,Qingdao University of Science andTechnology,Qingdao 266042,China)

机构地区：[1]山东省烯烃催化与聚合重点实验室橡塑材料与工程教育部重点实验室青岛科技大学高分子科学与工程学院

出　　处：《高等学校化学学报》2019年第7期1571-1578,共8页Chemical Journal of Chinese Universities

基　　金：山东省重大基础研究项目(批准号:ZR2017ZA0304);国家自然科学基金(批准号:51473083);泰山学者工程资助~~

摘　　要：以氯丁橡胶(CR)为基体材料,将新型反式-1,4-丁二烯-异戊二烯共聚橡胶(TBIR)引入传统CR减振基体中,探讨TBIR在减振材料中的应用前景.研究发现,随着TBIR用量的增加,CR/TBIR混炼胶的强度及模量明显提升;CR/TBIR硫化胶的拉伸强度、撕裂强度、压缩永久变形、动静刚度比及耐疲劳性能均得到改善,特别是一级疲劳寿命提高了50%~400%(未填充体系)及40%~180%(填充体系),六级疲劳寿命提高了60%~500%(未填充体系)及30%~120%(填充体系).与未填充CR/TBIR硫化胶相比,填充CR/TBIR硫化胶由于炭黑补强作用及填料-聚合物相互作用的引入,屈挠疲劳寿命、撕裂强度及拉伸性能均显著提高.与填充CR硫化胶相比,填充CR/TBIR质量比为90/10的并用胶能够在保持硫化胶的损耗因子基本不变的基础上,实现综合性能的平衡提升.A new type of synthetic trans-1,4-poly(butadiene-co-isoprene)copolymer rubber(TBIR)was introducedinto the traditional chloroprene rubber(CR)as damping matrix for railway track damping rubber cushion.It was found that CR/TBIR blends exhibited excellent comprehensive properties including significantlyincreased tensile strength and modulus of the CR/TBIR compounds,the obviously improved tensilestrength,tear strength,compression permanent deformation,dynamic and static stiffness ratio and fatigue resistance of the CR/TBIR vulcanizates.Especially,the 1st flexural fatigue lifetimes showed 50%-400%improvementsfor unfilled CR/TBIR vulcanizates and 40%-180%improvements for the filled CR/TBIR vulcanizates;the 6th flexural fatigue lifetimes showed 60%-500%improvements for the unfilled CR/TBIR vulcanizates and 30%-120%improvements for filled CR/TBIR vulcanizates.Compared with the unfilled CR/TBIR vulcanizates,the 1st flexural fatigue lifetime,tear strength and tensile property of the filled CR/TBIR vulcanizates improved greatly,which were attributed to the better filler dispersion and improved filler-polymer interactions in the CR/TBIR vulcanizates.Compared with pure CR vulcanizate,m(CR)∶m(TBIR)=90∶10(mass ratio)vulcanizateexhibited balanced comprehensive performances with loss factor changed little.

关 键 词：减振材料 氯丁橡胶 反式-1 4-丁二烯-异戊二烯共聚橡胶 耐疲劳 撕裂强度 

分 类 号：O631.1[理学—高分子化学]