Material Analysis
11 조회수
Glass Fibre fast UV aging
문제 현상
Glass Fibre after UV irradiation 48h mechanical properties drop >20%, yellowing
원인 분석
Glass Fibre molecular chains rapidly degrade by photo-oxidation under UV; surface molecular chains break forming microcracks
해결 방법
1) Add UV absorber 0.3-0.5wt% to block UV; 2) add HALS 0.2wt% radical scavenging; 3) carbon black 2wt% physically shields UV
핵심 요약
Fast UV aging is caused by photo-oxidation; UV absorber and HALS are key
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