低气味、低VOC汽车车身空腔阻断材料的研究

Study on the Cavity Blocking Material with Less Odor and Low VOC for Automobile Body

以乙烯-丙烯酸酯共聚物(EAAE)、发泡剂、交联剂等为原料制备了一种低气味、低VOC汽车车身空腔阻断材料,研究了这种材料的气味等级、VOC挥发量,并与乙烯-醋酸乙烯共聚物(EVA)制得的空腔阻断材料进行对比。结果表明,与EVA空腔阻断材料相比,EAAE空腔阻断材料具有低气味、低VOC挥发量,同时材料的体积膨胀率达到1500%以上,满足汽车车身空腔填充材料的性能要求。

A cavity blocking material with less odor and low VOC for automotive body is prepared with the ethylene-acrylate copolymer(EAAE),foaming agent and crosslinking agent as raw materials.The odor grade and VOC volatilization of the material are studied,and compared with the cavity blocking material made from ethylene-vinyl acetate copolymer(EVA).The results show that compared with the one prepared by EVA,the material manufactured with EAAE has less odor and lower VOC,and the volume expansion rate is more than 1500%,which can meet the perfor-mance requirements of automotive body cavity filling materials.