液体天然橡胶作软化剂对NR/白炭黑复合材料性能的影响  

Effect of Liquid Natural Rubber as a Softener on the Property of NR/Silica Composite

作　　者：周荣杰 李超群[1] 杨晓红[1] 吴龙梅[1] 廖双泉[1] 

机构地区：[1]海南大学材料与化工学院,海口570228

出　　处：《材料导报》2015年第4期60-63,共4页Materials Reports

基　　金：国家自然科学基金(51363006);国家科技支撑计划项目(2013BAF08B02);海南省自然科学基金(214021)

摘　　要：以液体橡胶(Liquid natural rubber)作软化剂,探索加入不同用量的LNR软化剂对NR/SiO2复合材料性能的影响,实验发现LNR的加入能够缩短NR/SiO2复合材料焦烧时间t10以及正硫化时间t90;对加工性能也有明显的改善,可以显著降低Payne效应;同时LNR的加入可以减少白炭黑的团聚现象,促进白炭黑在胶料中的均匀分布;LNR对样品的动态力学性能也有较大的影响,实验表明7.5份LNR能同时提高胶料的抗湿滑性和降低胶料滚动阻力。Liquid natural rubber （LNR） as a softener was added to NR/SiO2 composites to explore the effect of LNR on properties of NR/SiO2 composites. The results indicated that addition of LNR reduced scorch time （t10） and vulcanization time （t90） of NR/SiO2 composites, also significantly weakened Payne effect and thus alleviated agglome-ration of SiO2. The improvement in dispersion of SiO2 was also proved by scanning electron microscope. As a result, the dynamic mechanical property was affected. Besides, wet skid resistance increased and rolling resistance decreased when 7.5 phr LNR was added into NR/SiO2 composites.

关 键 词：天然橡胶 液体天然橡胶 白炭黑 复合材料 

分 类 号：TQ332.5[化学工程—橡胶工业]