氢化天然橡胶/氢氧化镁/环氧化天然橡胶复合材料的制备及性能研究  

Preparation and Properties of HNR/Magnesium Hydroxide/ENR Composites

作　　者：潘勇军[1] 张承启[1] 雷宽宏[1] 陆挺[1] 黄年华[1] PAN Yongfun ZHANG Chengqi LEI Kuanhong L U Ting HUANG Nianhua(College of Material Science and Engineering, Wuhan Textile University, Wuhan 430073, Chin)

机构地区：[1]武汉纺织大学材料科学与工程学院,湖北武汉430073

出　　处：《橡胶科技》2016年第12期19-23,共5页Rubber Science and Technology

基　　金：武汉纺织大学大学生创新计划项目(2013CXXL002和141073011)

摘　　要：采用水合肼/双氧水/硫脲体系对天然胶乳进行氢化改性制备氢化天然橡胶(HNR),研究HNR/氢氧化镁[Mg(OH)_2]/环氧化天然橡胶(ENR)复合材料的微观结构和性能。结果表明:制备HNR的最佳氢化条件为水合肼/NR的C=C键物质的量比5.5/1,双氧水/水合肼物质的量比1.85/1,硫酸铜浓度3.5 mmol·kg^(-1),表面活性剂浓度20g·kg^(-1);HNR/Mg(OH)_2/ENR复合材料具有良好的界面相容性;HNR/Mg(OH)_2/ENR并用比为10/5/5的复合材料极限氧指数达到20.7%,阻燃性能良好。Hydrogenated natural rubber（HNR） was prepared by using hydrazine hydrate/hydrogen peroxide/ thiourea system to modify natural rubber latex. The microstructure and properties of HNR/magnesium hydroxide[Mg（OH）2]/epoxidized natural rubber（ENR） composites were investigated. The results showed that the optimum hydrogenation conditions for the preparation of HNR：the mole ratio of hydrazine hydrate/C=C double bonds of NR was 5. 5/1,the mole ratio of hydrogen peroxide/hydrazine hydrate was 1. 85/1,the concentration of copper sulfate was 3. 5 mmol·kg^-1,and the concentration of surfactant was 20 g·kg^-1. The composites possessed good interfacial compatibility. When the blending ratio of HNR/Mg（OH）2/ENR was at 10/5/5,the limited oxygen index of the composites reached 20. 7%,showing good flame retardant property.

关 键 词：天然橡胶 氢化天然橡胶 环氧化天然橡胶 氢氧化镁 阻燃性能 

分 类 号：TQ332[化学工程—橡胶工业] TB332[一般工业技术—材料科学与工程]