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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

382 perguntas
Q
Yellowing of EVA products after processing
A
Yellowing is caused by thermo-photo-oxidation and metal catalysis; completing antioxidant system and UV absorber is key
Production & Quality EVA yellowing thermo-oxidation antioxidant UV absorber metal catalysis
Q
EMA internal inclusions
A
Inclusions are caused by raw material and environmental contamination; filtering and environmental control are key
Production & Quality EMA inclusions raw material filtering environmental cleanliness recycled material sorting
Q
EMA surface blooming
A
Blooming is caused by low molecular migration and exudation; selecting high molecular weight grade is fundamental
Production & Quality EMA blooming low molecular migration high molecular weight lubricant exudation
Q
Poor EMA fatigue resistance
A
Poor fatigue resistance is caused by insufficient recovery and fast crack growth; increasing crosslinking is key
Production & Quality EMA fatigue resistance crosslinking degree molecular weight stress concentration
Q
EMA stress cracking
A
Stress cracking is caused by stress-accelerated chemical attack; annealing and high MW are key
Production & Quality EMA stress cracking environmental stress annealing treatment high molecular weight
Q
EMA surface microcracks
A
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are key
Production & Quality EMA microcracks internal stress annealing treatment stress concentration design
Q
EMA Performance Decay After Repeated Processing
A
Performance decay after multiple processing is caused by thermo-mechanical degradation; limiting regrind and supplementing antioxidants are key
Production & Quality EMA recycling performance decay antioxidant supplementation thermal degradation shear degradation
Q
EMA Product Yellowing After Processing
A
Yellowing is caused by thermal/photo-oxidation and metal catalysis; improving the antioxidant system and UV absorber are key
Production & Quality EMA yellowing thermal oxidation antioxidant UV absorber metal catalysis
Q
EEA Internal Inclusions
A
Inclusions are caused by raw material and environmental pollution; filtration and environmental control are key
Production & Quality EEA inclusions raw material filtration environmental cleanliness recycled material sorting
Q
EEA Surface Blooming
A
Blooming is caused by low-molecular migration and exudation; selecting a high-molecular-weight grade is fundamental
Production & Quality EEA blooming low-molecular migration high molecular weight lubricant exudation
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