(丙烯腈-丙烯酸酯-苯乙烯)韩国LG:ASA LI931、LI923 、LI921NS ASA为丙烯腈-丙烯酸酯-苯乙烯三元共聚物,是针对ABS耐候性差的缺点而开发的工程塑料。它具有极佳的耐候性,即使长时间暴露在室外紫外线、潮湿、雨淋、光照及臭氧条件下,不经涂装也可保持物性稳定。特别适合不涂装在户外直接使用。广泛用于汽车、电子电气、日用品、户外装饰材料等领域。ASA is acrylonitrile - acrylate - styrene terpolymer, which is an engineering plastic developed for the disadvantage of poor weatherability of ABS. It has excellent weather resistance and can maintain stable physical properties without coating even if exposed to outdoor ultraviolet rays, humidity, rain, light and ozone for a long time. It is especially suitable for direct use outdoors without painting. Widely used in automobile, electronics, daily necessities, outdoor decoration materials and other fields.