作　　者： ; ; ;

机构地区： 青岛科技大学高性能聚合物研究院

出　　处： 《橡胶工业》 2013年第10期588-592,共5页

摘　　要： 试验研究甲基丙烯酸锌(ZDMA)补强氢化丁腈橡胶(HNBR)热空气老化前后的物理性能和动态力学性能。结果表明:随着ZDMA用量的增大,HNBR胶料的t_(10)和t_(90)缩短,M_L和M_H增大,硫化胶的邵尔A型硬度和100%定伸应力增大,拉伸强度和拉断伸长率先增大后减小;经热空气老化后,随着老化时间的延长,HNBR硫化胶的邵尔A型硬度和100%定伸应力增大,拉伸强度和拉断伸长率减小;延长老化时间或增大ZDMA用量,HNBR硫化胶的储能模量和损耗模量增大,损耗因子峰值逐渐减小,损耗模量峰值和玻璃化温度逐渐向高温方向移动。 The physical properties and dynamic property of HNBR reinforced by zinc dimethacry late （ZDMA） before and after hot air aging were investigated experimentally. The results showed that,as the addition level of ZDMA increased,t10 and tg0 of HNBR compound shortened,ML and MH in creased,the Shore A hardness and modulus at 100% elongation of the vulcanizates increased,and the tensile strength and elongation at break increased at first and then decreased. After hot air aging, as the aging time extended,the Shore A hardness and modulus at 100% elongation of the HNBR vulcani- zates increased,and the tensile strength and elongation at break decreased. When the aging time ex- tended or the addition level of ZDMA increased,the storage modulus and loss modulus of the HNBR vulcanizates increased,the peak value of loss factor decreased gradually, and the peak value of loss modulus and glass transition temperature shifted gradually to the high temperature region.

关 键 词： 甲基丙烯酸锌 氢化丁腈橡胶 物理性能 动态力学性能 耐老化性能

领　　域： [化学工程] [化学工程]