甲基丙烯酸缩水甘油酯熔融接枝氢化丁腈橡胶复合材料的制备及性能  

Preparation and properties of melt grafted hydrogenated nitrile rubber composite with glycidyl methacrylate

作　　者：王丽丽[1] 刘超 郑方远 WANG Li-li;LIU Chao;ZHENG Fang-yuan(Yanshan Branch of Beijing Research Institute of Chemical Industry/National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,SINOPEC,Beijing 102500,China)

机构地区：[1]中国石化北京化工研究院、燕山分院/橡塑新型材料合成国家工程研究中心,北京102500

出　　处：《合成橡胶工业》2025年第2期87-91,共5页China Synthetic Rubber Industry

摘　　要：通过加工过程中熔融接枝改性的方法,将甲基丙烯酸缩水甘油酯(GMA)接枝到氢化丁腈橡胶(HNBR)上,考察了GMA添加量与改性体系活性反应温度的关系,定量分析了改性HNBR的接枝率和凝胶含量,研究了改性HNBR复合材料的力学性能和耐油性。结果表明,GMA成功接枝到了HNBR上;随着GMA添加量的增加,其接枝率逐渐增加,但凝胶含量也相应增加;当GMA添加量不大于10份(质量)时,随着GMA接枝率的提高,改性HNBR复合材料的玻璃化转变温度变化不大,100%定伸应力提高,拉伸强度降低,耐油性提升;建立的红外光谱定量分析接枝率方法效率高、简单易行、数据可靠。Glycidyl methacrylate(GMA)was grafted onto hydrogenated nitrile rubber(HNBR)by melt grafting during processing,the relationship between amount of GMA and active reaction temperature of the modified system was investigated,the grafting ratio and gel content of the modified HNBR were quantitatively analyzed,and the mechanical properties and oil resistance of the modified HNBR composites were also studied.The results showed that GMA was successfully grafted onto HNBR.With the increase of GMA amount,the grafting ratio increased gradually,but the gel content also increased accordingly.When the amount of GMA added was not more than 10 phr(by mass),with the increase of GMA grafting ratio,the glass transition temperature of HNBR composite did not change much,modulus at 100%increased,the tensile strength decreased,and the oil resistance improved.The infrared spectroscopy quantitative analysis method for grafting ratio of modified HNBR was efficient,simple,and reliable.

关 键 词：氢化丁腈橡胶 甲基丙烯酸缩水甘油酯 温度扫描 接枝率 凝胶含量 玻璃化转变温度 力学性能 耐油性 

分 类 号：TQ333.7[化学工程—橡胶工业]