Material Drying
8 조회수
Gel Particles in PCTG Extruded Sheets
문제 현상
Visible particles (gel particles) appear in PCTG extruded sheets, with poor appearance.
원인 분석
High-melting-point impurities or cross-linked gel are mixed into the raw material, the material stays too long in the screw dead corners and degrades, and the drying temperature is too high, producing prepolymers.
해결 방법
Use 80-120μm filter screens; optimize the screw combination; control the drying temperature ≤70°C; clean the screw regularly.
핵심 요약
PCTG gel particles originate from impurities and degradation products.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!