发光塑料的研制

DEVELOPMENT OF LUMINESCENT PLASTICS

分别将ZnS类发光颜料及碱土铝酸盐类发光颜料加入到聚丙烯中,制成ZnS发光塑料和碱土铝酸盐发光塑料,测定其辉度、余辉时间及光稳定性。结果表明,在低强度光的激发下,碱土铝酸盐发光塑料较ZnS发光塑料吸光慢,初始辉度低,但余辉时间长;在高强度光的激发下,碱土铝酸盐发光塑料辉度高,余辉时间长;在日光照射下,碱土铝酸盐发光塑料的耐光性能明显优于ZnS发光塑料。碱土铝酸盐发光塑料无论是发光性能还是耐光性能均优于ZnS发光塑料。

A luminescent plastics was prepared bv adding zinc sulfide （ZnS） or alkaline earth aluminate luminescent pigments in polyproplene. The brightness, afterglow time and stability against light were measured. The results showed that alkaline catch aluminate plastic excited by low intensity light had the properties of slower charging, lower inicial brightness, longer afterglow time than zinc sulfide plastic. Alkaline earth aluminate plastic excited by high intensity light had the properties of high brightness, long afterglow time. The stability against light of alkaline earth aluminate plastic was much better than that of zinc sulfide plastic. Whether the luminescent properties or the stability against light of alkaline earth aluminate plastic were superior to that of ZnS plastic.