第 43 卷第 4 期Vol. 43 No. 4
2013 年 8 月Aug 2013

所属栏目:功能材料

硫化剂及填料对氯醚橡胶力学性能和老化性能的影响研究
谭雅婷1,徐建双2,王 曦1,苏胜培1* (1. 湖南师范大学 化学化工学院 资源精细化与先进材料湖南省高校重点实验室,湖南 长沙 410081; 2. 深圳市博富隆新材料科技有限公司,广东 深圳 518118)
摘 要:研究了3种硫化剂——2,3-二巯基-喹喔啉(DNR-12A)、三巯基均三嗪(TCY)和亚乙基硫脲(NA-22)及3种填料——高耐磨炭黑(N330)、木质素-蒙脱土复合物填料(BL-MMT)和碱性木质素(lignin)对共聚型氯醚橡胶(ECO)硫化特性、交联密度、力学性能和老化性能的影响。结果表明,固定填料为N330时,用NA-22硫化的胶料的力学性能最好,但热氧老化性能最差;改变填料后NA-22硫化胶料的老化性能得到提高,固定硫化剂为NA-22时,以碱性lignin为填料的胶料的力学性能与热氧老化性能均最好,拉伸强度达15.5 MPa,断裂伸长率达394%,100%定伸应力达6.4 MPa,老化后拉伸强度保持率为103.2%。
关键词:氯醚橡胶;硫化剂;填料;力学性能;老化性能
中图分类号:TQ333  文献标识码:A  文章编号:1009-9212(2013)04-0045-06
Study on Effects of Vulcanizing Agent and Filler to Mechanical Properties and Thermo-oxidative Aging Properties of Epichlorohydrin Rubber
TAN Ya-ting1,XU Jian-shuang2,WANG Xi1,SU Sheng-pei1* (1. College of Chemistry and Chemical Engineering,Key Lab of Sustainable Resources Processing and Advanced Materials,Hunan Normal University,Changsha 410081,China;2. Shenzhen Prosperous New Materials Co.,Ltd.,Shenzhen 518118,China )
Abstract:Effects of three kinds of vulcanizing agents (2,3-dithiolquinoxalines,trithiocyanuric acid and ethylene thiourea)and three kinds of fillers (carbon black,lignin-montmorillonite complex and alkalescent lignin)on the curing characteristics,crosslinking densities,mechanical properties and thermo-oxidative aging properties of epichlorohydrin rubber have been evaluated. The experimental results indicated that when carbon black was fixed as the filler,the rubber cured with ethylene thiourea possess the best mechanical properties and the worst thermo-oxidative aging properties. When ethylene thiourea was used as the vulcanizing agent,the rubber filled with alkalescent lignin possess the best mechanical properties and thermo-oxidative aging properties. The tensile strength of rubber composite is 15.5 MPa;the elongation at break is 394%;the 100% modulus is 6.4 MPa;and the retention of tensile strength is 103.2%.
Key words:epichlorohydrin rubber;vulcanizing agent;filler;mechanical property;thermo-oxidative aging property
基金项目:湖南师范大学潇湘学者启动资金资助课题(化050613),深圳市战略新兴产业发展专项资金(CXZZ20120830161412161)。
作者简介:谭雅婷(1989-),女,湖南津市人,硕士研究生,研究方向:高分子复合材料。(E-mail:tanyating413@gmail.com)
联 系 人: 苏胜培,教授,博士生导师,研究方向:高分子复合材料。(E-mail:sushengpei@gmail.corn)
收稿日期: 2013-08-2