Material Analysis
11 조회수
Poor PVA weather resistance
문제 현상
After 6 months outdoors, PVA mechanical properties decrease 40-50%, surface cracking
원인 분석
PVA polyolefin backbone photo-oxidative degradation, molecular chain breakage; ultraviolet rays directly attack C-C bonds
해결 방법
1) UV-327 0.5-1wt% to absorb ultraviolet; 2) HALS-770 0.2-0.5wt% for light stabilization; 3) 1010+168 antioxidant 0.3wt% to prevent oxidation
핵심 요약
Poor weather resistance is caused by photo-oxidation; UV+HALS+antioxidant triple protection is the key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!