Production & Quality
11 조회수
Surface micro-cracks of PU
문제 현상
0.05-0.2mm micro-cracks appear on PU product surface, affecting appearance and strength
원인 분석
Internal stress of PU products too large, exceeding material yield stress; environmental stress cracking; product design stress concentration
해결 방법
1) Annealing treatment to release internal stress; 2) Product design avoiding sharp corners and stress concentration; 3) Select high molecular weight PU to improve crack resistance
핵심 요약
Micro-cracks are caused by excessive internal stress; annealing and crack-resistant design are key
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!