Extrusion & Post
4 조회수
Heat deflection temperature (HDT) of PBT injection molded parts not up to standard
문제 현상
The HDT test value of PBT products is lower than the nominal value (pure PBT about 60°C, GF30 about 205°C).
원인 분석
The internal stress is not fully released, causing the test value to be low, the annealing is insufficient, the glass fiber dispersion is poor, and the test conditions deviate.
해결 방법
Fully anneal at 120°C/2h; ensure good glass fiber dispersion; execute according to standard test conditions.
핵심 요약
PBT HDT is affected by internal stress and glass fiber dispersion.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!