丁腈橡胶/硫酸高铈复合材料的配位交联反应研究  

Study on the Coordination Crosslinking of Acrylonitrile-butadiene Rubber/Ceric Sulfate Composites

作　　者：卓倩[1,2] 杨文卿[1,2] 曹长林 陈荣国[1,2] 钱庆荣 陈庆华 ZHUO Qian;YANG Wenqing;CAO Changlin;CHEN Rongguo;QIAN Qingrong;CHEN Qinghua(The Institute of Minnan Science and Technology,The Institute of Quangang Petrochemical Research, Fujian Normal University,Quanzhou 362332;Engineering Research Center of Polymer Green Recycling of Ministry of Education,Fuzhou 350007)

机构地区：[1]福建师范大学闽南科技学院,泉港石化研究院,泉州362332 [2]聚合物资源绿色循环利用教育部工程研究中心,福州350007

出　　处：《材料导报》2018年第6期965-970,共6页Materials Reports

基　　金：国家重点专项项目(2016YFB0302302);福建师范大学泉港石化研究院专项项目(2015YJY04)

摘　　要：以四水合硫酸高铈(Ce(SO_4)_2·4H_2O)为配位交联剂,采用原位法制备丁腈橡胶(NBR)/Ce(SO_4)_2·4H_2O复合材料,并利用差示扫描量热分析(DSC)、热重分析(TGA)、溶胀平衡法、扫描电子显微镜(SEM)、硫化仪和万能试验机对其进行结构表征和性能测试。结果表明,Ce(SO_4)_2·4H_2O与NBR发生了配位交联反应,配位硫化为一级反应,活化能为14.4kJ/mol;NBR/Ce(SO_4)_2·4H_2O硫化胶具有良好的力学性能,Ce(SO_4)_2·4H_2O起配位交联和补强填充的作用。配位交联硫化体系具有配方精炼、工艺简单的优点,在特定领域将配位交联NBR替代传统共价交联NBR具有可行性。Cerium sulfate(Ce(SO 4)2·4H 2O)was selected as the crosslinking agent and the acrylonitrile-butadiene rubber(NBR)/Ce(SO 4)2·4H 2O composites crosslinked by coordinate bonds were fabricated via in situ coordination crosslinking.The structures and properties of the composites were explored respectively by differential scanning calorimetry(DSC),thermogravimetric analysis(TGA),swelling index,scanning electron microscopy(SEM),vulkameter and universal testing machine.The results show that the coordination crosslinking reaction occurs between NBR and Ce(SO 4)2·4H 2O.The reaction order was 1 and the apparent activation energy was 14.4 kJ/mol.Besides,NBR/Ce(SO 4)2·4H 2O vulcanizates had good mechanical properties.Ce(SO 4)2·4H 2O worked as coordination crosslinking agent and reinforcing filler in NBR.The curing system of coordination crosslinking has the advantages of simple formulation and process.It is feasible for the replacement of covalent crosslinking by coordination crosslinking in special domain.

关 键 词：丁腈橡胶 硫酸高铈 配位交联 力学性能 

分 类 号：TQ330.1[化学工程—橡胶工业]