Material Analysis
4 조회수
Unstable impact strength between batches of high impact polystyrene products
문제 현상
Impact strength test results of different product batches fluctuate greatly, sometimes qualified sometimes unqualified.
원인 분석
(1) Raw material batch differences, different molecular weight or rubber content
(2) Processing temperature fluctuation, different degrees of material degradation
(3) Inconsistent regrind ratio, performance fluctuation
(4) Different product internal stress, impact strength differences
(5) Inconsistent test conditions
해결 방법
(1) Establish raw material incoming inspection standards
(2) Strictly control processing temperature within the 180-240°C range
(3) Unify regrind ratio
(4) Optimize process parameters, reduce internal stress
(5) Unify test conditions and sample preparation methods
핵심 요약
Impact strength stability depends on raw material consistency and process stability.
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