聚甲基丙烯酸甲酯（ＰＭＭＡ）有７０多年生产历史 ,现己成为主要的高耐紫外线的透明丙烯酸酯聚合物 ,而与ＰＭＭＡ竞争的聚碳酸酯（ＰＣ）相对较为年轻并且还在发展中 ,它也是透明的 ,但是有着更好的抗冲击性。在最近召开的Ｔｅｃｎｏｎ会议上 ,Ｉｎｆｏｐｌａｓｔ公司代表指 Polymethylmethacrylate (PMMA) has more than 70 years of production history and is now a major high-UV transparent acrylic polymer. Polycarbonate (PC), which competes with PMMA, is relatively young and still under development. It is also transparent, but has better impact resistance. At a recent Tecnon meeting, an Infoplast representative said