CAJ | 학술논문

以受阻胺光稳定剂和紫外线吸收剂对聚甲醛（ POM）进行光稳定化耐候改性，并对制得的耐候POM的力学性能和人工加速老化行为进行了测试和评价。结果表明，经氙灯人工加速老化1000 h后，试样的拉伸强度保持率、断裂伸长率保持率和缺口冲击强度保持率分别达到103％、76.2％和84.4％，色差由7.6减小至0.8，远优于未经光稳定化处理的POM的相应性能。
이수조알광은정제화자외선흡수제대취갑철（ POM）진행광은정화내후개성，병대제득적내후POM적역학성능화인공가속노화행위진행료측시화평개。결과표명，경선등인공가속노화1000 h후，시양적랍신강도보지솔、단렬신장솔보지솔화결구충격강도보지솔분별체도103％、76.2％화84.4％，색차유7.6감소지0.8，원우우미경광은정화처리적POM적상응성능。
Weathering polyoxymethylene ( POM) materials modified with compounded hindered amine light stabi-lizers and ultraviolet absorbers were prepared ,and their mechanical properties and artificial accelerated aging behav -iors were tested and evaluated.It has been found that the retention of tensile strength ,elongation and notched impact strength can be improved to reach 103%、76.2% and 84.4%, respectively , and the color difference has decreased from 7.6 to 0.8,which is far better than the corresponding properties of POM without light stabilization modification .