Material Analysis
4 조회수
Environmental stress cracking of high impact polystyrene products
문제 현상
Products crack when contacting specific chemical media while simultaneously bearing stress.
원인 분석
(1) Residual stress exists in the product, accelerated cracking under chemical media action
(2) Contact with incompatible chemical media (solvents, oils, etc.)
(3) Uneven product wall thickness, stress concentration areas easily crack
(4) Low material molecular weight, poor environmental stress cracking resistance
(5) High use environment temperature accelerates cracking
해결 방법
(1) Reduce product residual stress (annealing treatment)
(2) Avoid contact with incompatible chemical media
(3) Optimize product design, uniform wall thickness, reduce stress concentration
(4) Select high molecular weight grades
(5) Reduce use environment temperature
핵심 요약
Environmental stress cracking is the result of the combined action of stress and chemical media.
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