甲基丙烯酸羟乙酯接枝天然橡胶对白炭黑/天然橡胶复合材料性能的影响  

Effects of HEMA Grafted NR on Properties of Silica/NR Composites

作　　者：刘宏超[1] 王启方[1] 汪月琼[1] 林文锭 李永振[1] 余和平[1] LIU Hongchao;WANG Qifang;WANG Yueqiong;LIN Wending;LI Yongzhen;YU Heping(Agricultural Products 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

出　　处：《橡胶工业》2022年第8期597-602,共6页China Rubber Industry

基　　金：广东省天然橡胶加工重点实验室资助项目(2019B121203004);中国热带农业科学院基本科研业务费专项资金资助项目(1630122021005)。

摘　　要：研究甲基丙烯酸羟乙酯(HEMA)接枝天然橡胶(NR)(NR-g-HEMA)接枝率和用量对白炭黑/NR复合材料性能的影响。结果表明:与未加入NR-g-HEMA的白炭黑/NR复合材料相比,加入NR-g-HEMA的白炭黑/NR复合材料的硫化速度、交联程度、邵尔A型硬度、定伸应力和撕裂强度增大,压缩疲劳温升明显降低;当NR-g-HEMA接枝率为10%和用量为10份时,白炭黑/NR复合材料的拉伸强度最大,压缩疲劳温升最低;NR-g-HEMA与NR相容性较好,加入NR-gHEMA的白炭黑/NR复合材料中白炭黑在橡胶相中分散更均匀,两者具有更强的界面结合效果。The effects of graft ratio and amount of 2-hydroxyethyl methacrylate(HEMA)grafted natural rubber(NR)(NR-g-HEMA)on the properties of silica/NR composites were investigated.The results showed that,compared with the silica/NR composites without NR-g-HEMA,the vulcanization rate,cross-link degree,Shore A hardness,modulus and tear strength of the silica/NR composites with NR-gHEMA increased,and the compression fatigue temperature rise decreased significantly.When NR-g-HEMA grafting rate was 10%and amount was 10 phr,the tensile strength of silica/NR composites was the largest,and the compression fatigue temperature rise was the lowest.NR-g-HEMA had good compatibility with NR,silica was more uniformly dispersed in the rubber phase with the addition of NR-g-HEMA,and the silica and rubber had stronger interfacial bonding effect.

关 键 词：天然橡胶 甲基丙烯酸羟乙酯 接枝 白炭黑 复合材料 拉伸强度 压缩疲劳生热 

分 类 号：TQ332.6[化学工程—橡胶工业] TQ330.383