白炭黑/硅土/天然橡胶复合材料的湿法制备及性能研究  

Wet Process Preparation and Properties of Silica/Siliceous Earth/NR Composites

作　　者：汪晓敏 陈静 王兵兵[2] 潘荣楷 钟杰平[3] 高利军 WANG Xiaomin;CHEN Jing;WANG Bingbing;PAN Rongkai~;ZHONG Jieping;GA(Lingnan Normal University,Zhanjiang 524048,China;Agricultural Products Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang 524001,China;Guangdong Ocean University,Zhanjiang 524088,China)

机构地区：[1]岭南师范学院化学化工学院,广东湛江524048 [2]中国热带农业科学院农产品加工研究所,广东湛江524001 [3]广东海洋大学理学院,广东湛江524088

出　　处：《橡胶工业》2018年第9期1029-1033,共5页China Rubber Industry

基　　金：广东省自然科学基金资助项目(2016A030307020);湛江市科技计划项目(201502021);大学生创新创业训练计划项目(201510579304);公益性行业(农业)科研专项(201403066)

摘　　要：将改性白炭黑和改性硅土悬浮液分别与天然胶乳共混,制得白炭黑/天然橡胶母炼胶和硅土/天然橡胶母炼胶,将两种母炼胶按不同比例共混,制得白炭黑/硅土/天然橡胶复合材料,并对其性能进行研究。结果表明:加入一定量硅土后,白炭黑在橡胶基体中的分散性提高,白炭黑/硅土填充胶料的流动性改善,硫化速率增大,Payne效应明显减弱,损耗因子(tanδ)均小于硅土填充胶料,滚动阻力减小;硫化胶的300%定伸应力、拉伸强度和撕裂强度均随着硅土用量增大而增大,拉断伸长率明显大于硅土或白炭黑填充硫化胶,tanδ值较小。The modified silica and modified siliceous earth suspension were respectively blended with natural latex to prepare silica/NR masterbatch and siliceous earth/NR masterbatch,the two kinds of masterbatch were blended in different blending ratio to prepare silica/siliceous earth/NR composites,and the properties of composites were investigated. The results showed that,with a certain amount of siliceous earth,the dispersion of silica in rubber matrix was improved,the flowability of silica/siliceous earth filled compounds was improved,curing rate increased,Payne effect was significantly weakened,tanδ value was lower than that of the compound filled with only siliceous earth,and the rolling resistance was reduced. The modulus at 300% elongation,tensile strength and tear strength of the vulcanizate increased with the increase of the addition level of siliceous earth,the elongation at break was significantly higher than that of the compound filled with either siliceous earth or silica.

关 键 词：硅土 白炭黑 天然胶乳 胶乳凝聚法 硫化特性 动态力学性能 物理性能 

分 类 号：TQ332[化学工程—橡胶工业] TQ330.383