Material Analysis
4 조회수
LCP Weld Line Strength Extremely Low
문제 현상
LCP product strength at weld line is only 30~50% of the body, and fails at the weld line under stress or sealing tests.
원인 분석
LCP rigid rod-like molecular chains cannot re-entangle and fuse at the weld line like nylon and PC, so the interfacial bonding is inherently weak; rapid crystallization also leaves the flow front no time to fully intermelt.
해결 방법
①Design the gate so the weld line avoids stressed areas and sealing surfaces; ②use multi-gate sequential valves to control confluence position and pressure; ③increase melt and mold temperature; ④select grades with weld-line-strengthening formulas.
핵심 요약
Weld line is the Achilles' heel of LCP; gate position is more critical for LCP than for any other engineering plastic, and design avoidance is far better than process remedy.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!