硫化工艺参数对汽车用天然橡胶胶料减震衬套粘接性能和耐湿热老化性能的影响  

Effect of Vulcanization Process Parameters on Adhesive Properties and Humid Heat Aging Resistance of NR Compound Shock-absorbing Bushing for Automobile

作　　者：何方科 胡余优 丁斌煊 李剑 HE Fangke;HU Yuyou;DING Binxuan;LI Jian(Jianxin Zhao’s Group Corp.,Ninghai 315600,China)

机构地区：[1]建新赵氏科技有限公司,浙江宁海315600

出　　处：《橡胶工业》2022年第6期466-469,共4页China Rubber Industry

摘　　要：采用正交试验研究硫化工艺参数对汽车用天然橡胶(NR)胶料减震衬套粘接性能和耐湿热老化性能的影响。结果表明:湿热老化后NR胶料的邵尔A型硬度增大,拉伸强度和拉断伸长率减小;NR胶料减震衬套粘接性能稳定性最佳的硫化工艺参数组合为:硫化时间600 s,硫化温度155℃,注胶压力21 MPa;在温度为70℃、湿度为85%~100%的条件下湿热老化504 h后,NR胶料减震衬套的最大破坏力平均值为22.74 kN,破坏后覆胶率为100%,满足NR胶料减震衬套的橡胶与金属骨架的粘接要求。The effects of vulcanization process parameters on the adhesive properties and humid heat aging resistance of the natural rubber(NR)compound shock-absorbing bushing for automobile were studied by orthogonal experiments.The results showed that,the shore A hardness of the NR compound increased after the humid heat aging,and the tensile strength and elongation at break decreased.The vulcanization process parameters to achieve the best and stable adhesive properties of the NR compound shock-absorbing bushing were as follows:vulcanization time 600 s,vulcanization temperature 155℃,injection pressure 21 MPa.After the humid heat aging under a temperature of 70℃and a relative humidity of 85%~100%for 504 h,the average value of the maximum destructive force of the NR compound shock-absorbing bushing was 22.74 kN,and the rubber covering percentage after damage was 100%,which met the requirements of the adhesion between the rubber material and metal framework of the NR compound shock-absorbing bushing.

关 键 词：减震衬套 汽车用 天然橡胶 硫化工艺参数 粘接性能 最大破坏力 耐湿热老化性能 

分 类 号：TQ336.42[化学工程—橡胶工业] TQ332