Injection Molding
11 조회수
High Internal Stress in PC Injection-Molded Parts
문제 현상
The internal stress level of PC products is high, and the polarized light stress test fails.
원인 분석
Fast cooling and low mold temperature freeze the molecular chain orientation, and the stress release is insufficient.
해결 방법
Increase the mold temperature to 90-120°C; extend the cooling time; anneal at 120°C/1-2h.
핵심 요약
PC internal stress is the precursor of performance deterioration and cracking.
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