2013525高岭土填充丁苯橡的微观特征研究.doc

高岭土/丁苯橡胶复合材料的微观特征研究 管俊芳1,2 李学伟1 胡雪峰3 田晶晶1 邱鑫强1 林浩1 （1 武汉理工大学资源与环境工程学院，湖北 武汉 430070； 2 中国地质大学纳米矿物材料及应用教育部工程研究中心 湖北 武汉 430074； 3 北海高岭科技有限公司 广西省合浦县常乐镇 邮编 536126）） 摘要：论文采用4种不同粒级的改性高岭土填充丁苯橡胶，制备了高岭土/丁苯橡胶复合材料，结合复合材料力学性能，通过FT-IR 对高岭土进行表征，采用SEM，分析了高岭石颗粒微观形态对橡胶复合材料力学性能影响的原因。结果表明：颗粒的细度和形态对复合材料的性能都有影响，剥片（A-1，A-2）不仅使高岭土中高岭石颗粒粒度变小，而且高岭石的片层变薄， 未剥片(A-3，A-4)的呈厚叠片状或粒状；剥片的高岭土填充橡胶后，高岭石颗粒分散均匀，片状取向定向排列，高岭石和橡胶基体结合紧密，发挥了片状晶形的补强作用，高岭土填料的形态效应影响复合材料的力学性能。 关键词：高岭石，丁苯橡胶，SEM microscopic characteristics of Kaolin/SBR composites Guan Junfang1,2 Lixuewei1 Huxuefeng3 Tianjingjing1 Qiuxinqiang1 Linhao1 (1 School of Resource Environmental Engineering,Wuhan University of Technology,Wuhan 430070, 2 Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan 430074, 3 BeiHai Kaolin Science and Technology Co.LTD, Changle Town , Hepu County, Guangxi Province, China 536126) Abstract:The styrene-butadiene was filled with four different size fractions of modified kaolin. Combining the mechanical properties of composite materials, the effect of microstructure of the kaolinite particles on the mechanical properties of rubber composites were investigated.The results of FT-IR and SEM show that the fineness and morphology of the kaolinite particles have a significant impact on the performance of composite materials. The kaolinite particles become more smaller and thinner by stripping. Otherwise ,the particles(A-3, A-4) ??are thick stack of flake or granular. The Stripping kaolinite particles are uniformly dispersed and directional arrangement in the rubber matrix.Kaolinite were linked tightly with rubber matrix,and the lamellar crystal playing a role of the reinforcement.The authors discover that the morphological effects of the filler have important influences on the performance of the composite. Key words:kaolinite,SBR,SEM随着橡胶工业的迅速发展，企业开始寻求多种廉价填料，以替代炭黑、白炭黑等昂贵的传统填料[1]。高岭土资源丰富，原料来源广，价格低廉[2,3]，可用作橡胶填料[4]。但高岭土属无机粒子，与橡胶大分子不相容，导致高岭土/橡胶机械混炼硫化胶物理性能差 [5]。为提高硫化胶物理性