炭黑-离子液体相互作用及其对橡胶结构与性能的影响

项目名称： 炭黑-离子液体相互作用及其对橡胶结构与性能的影响

项目编号： No.50873035

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 郭宝春

作者单位： 华南理工大学

项目金额： 35万元

中文摘要： 以室温离子液体（RTIL）为界面改性剂制备具有新型界面和优良性能的橡胶/填料复合材料，研究了不同RTIL与多种橡胶填料如炭黑，白炭黑，埃洛石和石墨等之间的相互作用，研究了RTIL与橡胶之间的反应性，深入系统地研究了RTIL对橡胶/填料复合材料的微观结构与性能的影响。 设计和制备了含有双键和巯基等功能基团的的功能IL，研究其与各种填料之间相互作用，揭示其对橡胶/填料复合材料的改性效果及机理。研究表明，功能离子液体与白炭黑，埃洛石等填料之间具有强烈的氢键相互作用。同时，功能离子液体在自由基引发条件下，可以与橡胶发生接枝反应。离子液体的加入可以大大抑制橡胶复合材料中填料的网络化，有效改善silica的分散，增强橡胶-填料界面相互作用，进而有效提高硫化胶的力学性能。

中文关键词： 橡胶；离子液体；填料；分散；界面

英文摘要： Reinforced rubber composites possessed novel interfacial structure and high performance have been prepared by using room temperature ionic liquids (ILs) as the interfacial modifiers.The interactions between ILs and different kinds of fillers including carbon black, silica, halloysite and graphite were investigated. The reactions between ILs and rubbers were explored. The effects of IL on the microstructure and performance of the rubber/filler composites were disclosed. Functional ILs bearing double bonds or thiol group have been synthesized and used to modify the interface of rubber composites. The modification mechanisms and effects of these functional ILs on the structure and performance of the rubber composites were illustrated. The mechanisms mainly involve the hydrogen bonding between the ILs and silica or halloysite, and the grafting of ILs onto rubber chains via radical reactions. Through these interactions, the dispersion of the filler and interfacial bonding were found to be significantly improved. Consequently, the high performance rubber composites with novel interfacial structures were resulted.

英文关键词： rubber; ionic liquid; filler; dispersion; interface