ABS微孔发泡材料气体扩散行为分析

采用化学交联模压法制备了丙烯腈-苯乙烯-丁二烯共聚物(ABS)微孔发泡材料,研究了发泡温度、发泡压力及发泡时间对ABS微孔发泡材料气体的扩散行为及泡孔结构的影响,结果表明:气体吸收量随着发泡温度、发泡压力和发泡时间的增加,先增大后减小;随着气体吸收量的增加,制品的泡孔尺寸逐渐减小,泡孔密度逐渐增大,增加气体吸收量有利于提高发泡效果。当发泡温度为170℃、发泡压力为10 MPa、发泡时间为12min时,泡孔密度约为2.87×108个/cm3,可满足工业上微孔发泡材料泡孔密度的要求。

Analysis on Gas Diffusion Behavior of ABS Microcellular Foam Material

Microcellular acrylonitrile-butadiene-styrene(ABS) foam was prepared by chemical cross-linked compression molding.The effects of foam temperature,foam pressure and foam time on the gas diffusion behavior and the foam structure of ABS microcellular foam material.The results show that:gas absorption increases firstly and then decreases with the increasing of the foaming temperature,foaming pressure and foaming time.With the increasing of gas absorption,cell size of the products decreases gradually,while the cell density increases gradually.To increase the gas absorption is beneficial to improving the foaming effect.When the foaming temperature is 170℃,foaming pressure is 10 MPa and foaming time is 12 min,the cell density is 2.87×108 cells/cm3,which meets the requirements of microcellular foam material.