环氧化天然橡胶原位接枝SiO2制备天然橡胶复合材料的力学性能和阻尼特性  

Mechanical and damping properties of natural rubber composites enhancing with in-situ grafted epoxidized natural rubber/SiO2 masterbatch

作　　者：刘宏超[1] 王启方[1] 何东宁[1,2] 李高荣 孙中锐 彭政 余和平[1] LIU Hong-chao;WANG Qi-fang;HE Dong-ning;LI Gao-rong;SUN Zhong-rui;PENG Zheng;YU He-ping(Guangdong Provincial Key Laboratory of Natural Rubber Processing,Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524001,China;School of Chemistry and Chemical Engineering,Lingnan Normal University,Zhanjiang 524001,China)

机构地区：[1]中国热带农业科学院农产品加工研究所广东省天然橡胶加工重点实验室,广东湛江524001 [2]岭南师范学院化学化工学院,广东湛江524001

出　　处：《应用化工》2020年第10期2511-2514,共4页Applied Chemical Industry

基　　金：现代农业产业技术体系建设专项资金资助(CARS-34-JG2);中国热带农业科学院基本科研业务费专项资金(1630122020006);广东省天然橡胶加工重点实验室资助(2019B121203004);海南省自然科学基金(519QN299)。

摘　　要：采用环氧化天然橡胶(ENR)原位接枝SiO2母胶制备NR/ENR/SiO2复合材料,考察NR/ENR/SiO2复合材料的力学性能和阻尼特性。结果显示,添加环氧化天然橡胶原位接枝SiO2母胶的NR/ENR/SiO2复合材料比单独添加环氧化天然橡胶和SiO2的样品分散性更好、硫化速率更高、力学性能升高明显,且耐老化性能得到改善。添加ENR原位接枝SiO2母胶的NR/ENR/SiO2复合材料与对照样相比,玻璃化转变温度升高,有效阻尼温域扩宽,阻尼性能提高。NR/ENR/SiO2 composites were prepared with in-situ grafted epoxidized natural rubber/SiO2 masterbatch.The mechanical properties and damping characteristics of NR/ENR/SiO2 composites were investigated.The results show that the NR/ENR/SiO2 composites with in-situ grafted epoxidized natural rubber/SiO2 masterbatch have better dispersibility,increased vulcanization rate,and better mechanical properties than the samples with ENR and silica added separately,and the aging property was improved.Compared with the control sample,the NR/ENR/SiO2 composite with in-situ grafted ENR/SiO2 masterbatch has higher glass transition temperature,wider effective damping temperature range,the damping performance was improved.

关 键 词：天然橡胶 环氧化天然橡胶 二氧化硅 原位接枝 阻尼特性 力学性能 

分 类 号：TQ332[化学工程—橡胶工业]