摘要
解决湿法混炼共沉胶的难加工问题对发展高性能绿色轮胎具有重要意义.本文提出"聚酯滚珠增塑橡胶"的概念,设计制备了辐射交联聚酯粒子(radiation-crosslinked polyester particles, REP),并研究了REP对湿法混炼共沉胶的加工性及硫化胶力学性能的影响.研究结果表明,在湿法混炼共沉胶加工过程中, REP的润滑作用能够帮助橡胶分子链解缠结,从而降低共沉胶门尼黏度,改善共沉胶的加工性,粒径为200 nm的REP能够使湿法混炼共沉胶的门尼黏度降低24%,加工耗能降低10%.此外, REP能够提高混炼胶硫化效率,改善硫化胶的力学性能.本文关于REP的增塑、增强橡胶作用机理的研究,对解决绿色轮胎制备过程中湿法混炼共沉胶的难加工问题和白炭黑的分散性问题具有重要的理论研究意义.
Solving the problems involved in processing wet mixing coprecipitated rubber is of great importance to develop high-performance green tires. In this work, the concept of polyester ball plasticized rubber is proposed to eliminate these processing difficulties using novel radiation-crosslinked polyester particles(REP). This paper describes a study of the effects of REP on the processability of wet mixing coprecipitated rubber compound and the mechanical properties of vulcanized rubber composites. Results indicate that REP lubrication untangles the rubber macromolecule during coprecipitated rubber processing;thus, reducing the Mooney viscosity and improving processability. Using 200 nm REP, the Mooney viscosity is reduced by 24% and the processing energy consumption is reduced by 10%. Additionally, REP can improve vulcanization efficiency and the mechanical properties of the vulcanized rubber composites. The application of REP in plasticizing coprecipitated rubber and reinforcing vulcanized rubber composites has theoretical importance in solving the problems of processing coprecipitated rubber and addressing the challenge of silica dispersal in tire tread composites for green tires.
作者
王凯
王庆国
王童瑶
彭博
WANG Kai;WANG QingGuo;WANG TongYao;PENG Bo(College of Polymer Science and Engineering,Qingdao University of Science&Technology,Qingdao 266042,China;Key Laboratory of Rubber-Plastics(QUST),Ministry of Education,Qingdao 266042,China)
出处
《中国科学：技术科学》
EI
CSCD
北大核心
2020年第3期312-322,共11页
Scientia Sinica(Technologica)
基金
国家自然科学基金(批准号:51773104,51373085)
山东省重点研发项目(编号:2017GGX20138)资助。
关键词
橡胶复合材料
辐射交联聚酯粒子
湿法混炼共沉胶
绿色轮胎
滚珠增塑
rubber composites
radiation-crosslinked polyester particles
wet mixing coprecipitated rubber
green tire
bearing ball plasticization
