Material Analysis 4 조회수

Large creep deformation of PU

문제 현상

PU product creep under long-term load >5%, exceeding the 2% requirement

원인 분석

PU elastomer inherently has large creep; molecular weight too low, poor creep resistance; not crosslinked, large plastic flow

해결 방법

1) Select high molecular weight grade; 2) Slight crosslinking with 0.3wt% DCP to reduce plastic flow; 3) Add rigid filler to reduce creep

핵심 요약

Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key

PU creep slight crosslinking high molecular weight rigid filler

이 정보가 도움이 되었나요?

0 명이 도움이 되었다고 합니다