脱蛋白天然橡胶的性能研究  

Study on Performance of Deproteinized Natural Rubber

作　　者：黄红海[1] 桂红星[1] 黄茂芳[2] 丁丽[1] 王岳坤[1] HUANG Honghai;GUI Hongxing;HUANG Maofang;DING Li;WANG YueKun(Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou 571737,China;Agricultural Product Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524001,China)

机构地区：[1]中国热带农业科学院橡胶研究所,海南儋州571737 [2]中国热带农业科学院农产品加工研究所,广东湛江524001

出　　处：《橡胶工业》2018年第9期1012-1015,共4页China Rubber Industry

基　　金：国家天然橡胶产业技术体系项目(CARS-33-GJ1);海南省重大科技计划项目(ZDKJ2016020-01);中国热带农业科学院基本科研业务费资助项目(1630022017023)

摘　　要：研究蛋白质质量分数为0.000 6~0.005 0的脱蛋白天然橡胶(LPNR)的性能及其在轮胎胎肩垫胶中的应用。结果表明:随着蛋白质含量的降低,LPNR生胶的塑性初值、塑性保持率和门尼粘度下降,硫化胶的拉伸强度和拉断伸长率提高;采用LPNR的胎肩垫胶的定伸应力、撕裂强度、硬度、压缩生热和损耗因子降低,拉伸强度、拉断伸长率、耐屈挠性能和弹性明显提高;蛋白质质量分数为0.002 5的LPNR胶料综合性能最优,适合用于胎肩垫胶。The properties of deproteinzed natural rubber（LPNR）in which protein mass fraction was between 0. 000 6 and 0. 005 0 as well as its application in tire shoulder pads were studied. The results showed that when the protein content decreased,the initial plasticity,plasticity retention index and Mooney viscosity of LPNR raw rubber decreased,and the tensile strength and elongation at break of the vulcanized LPNR increased. The modulus,tear strength,hardness,compression heat build-up and tanδ of shoulder pads with LPNR decreased,but tensile strength,tensile elongation,flex resistance and elastic resilience were all obviously improved. The comprehensive properties of LPNR in which protein mass fraction was 0. 002 5 were the best and it was suitable for application in shoulder pads.

关 键 词：脱蛋白天然橡胶 蛋白质 胎肩垫胶 耐屈挠性能 压缩生热 

分 类 号：U463.341[机械工程—车辆工程] TQ332[交通运输工程—载运工具运用工程]