第 41 卷第 5 期Vol. 41 No. 5
2011 年 10 月Oct 2011

所属栏目:功能材料

黑液/高岭土复合物在丁腈橡胶和丁苯橡胶中的应用研究
廖泽栋1,2,曹仲林1,2,王 曦1,2,苏胜培1,2 * (1. 湖南师范大学,湖南 长沙 410081;2. 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)
摘 要:通过絮凝沉降法制备了一种复合补强剂——黑液/高岭土复合物(CLK),将其分别与丁腈橡胶(NBR)和丁苯橡胶(SBR)共混制备了NBR/CLK与SBR/CLK复合材料。考察了CLK的添加量对橡胶复合材料硫化特性、交联密度、力学性能、热氧老化性能以及热降解性能的影响。结果表明:随着CLK含量的增加,在NBR/CLK复合材料体系中,焦烧时间、正硫化时间和硫化速度指数先增加而后逐渐降低;交联密度和力学性能则逐渐增大;老化性能及热性能没有显著改善。在SBR/CLK复合材料中,焦烧时间、硫化速度指数先增加而后逐渐降低,正硫化时间先减少而后逐渐增加;交联密度和力学性能则逐渐增大;老化性能没有显著改善,但热性能得到了提高。
关键词:黑液/高岭土复合物;丁腈橡胶;丁苯橡胶;力学性能
中图分类号:TQ333  文献标识码:A  文章编号:1009-9212(2011)05-0053-05
Study on the Application of Complex of Black Liquor and Kaolin in Acrylonitrile-butadiene Rubber and Styrene-butadiene Rubber
LIAO Ze-dong1,2,CAO Zhong-lin1,2,WANG Xi1,2,SU Sheng-pei1,2* (1. College of Chemistry and Chemical Engineering,Changsha 410081,China;2. Key Lab of Sustainable Resources Processing and Advanced Materials,Hunan Normal University,Changsha 410081,China)
Abstract:A synthetic reinforcing agent,complex of black liquor and kaolin(CLK) was prepared by coagulation-precipitation method,and then acrylonitrile-butadiene rubber(NBR)/CLK and styrene-butadiene rubber (SBR)/CLK composites were prepared by blending NBR or SBR with CLK using mechanical mixer. The effects of the loading of CLK on cure characteristics,the cross-linking densities,the mechanical properties,the thermal properties and the thermo-oxidative ageing properties were evaluated. The results showed that with the increase of CLK loading,in NBR/CLK composites,the scorch time,optimum cure time and cure rate index firstly increased and then decreased,cross-linking densities and mechanical properties increased gradually. However,the thermal oxidative ageing and thermal properties had no obvious improvement. In SBR/CLK composites,the scorch time and cure rate index started to increase and then decreased,optimum cure time started to decrease and then increased,cross-linking densities,mechanical properties and thermal degradation properties increased gradually. However,the thermal oxidative ageing decreased.
Key words:complex of black liquor and kaolin;NBR;SBR;mechanical properties
基金项目:湖南师范大学潇湘学者启动基金资助课题(化050613)。
作者简介:廖泽栋(1980-),男,湖南常宁人,博士研究生,研究方向:橡胶复合材料。(E-mail:liaozedong80@126.com)
联 系 人:苏胜培,教授,博士生导师。(E-mail:shengpeisu@gmail.com)
收稿日期:2011-09-08