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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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382 perguntas
Q
PVA surface microcracks
A
Microcracks are caused by excessive internal stress; annealing and crack-resistant design are the key
Production & Quality PVAmicrocrackinternal stressannealing treatmentstress concentration design
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Q
PVA performance decay after repeated processing
A
Performance decay after multiple processing is caused by thermo-mechanical degradation; limiting regrind and supplementing antioxidant are the key
Production & Quality PVA recyclingperformance decayantioxidant supplementationthermal degradationshear degradation
2 visualizações
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Q
Yellowing of PVA products after processing
A
Yellowing is caused by thermo-photo-oxidation and metal catalysis; improving the antioxidant system and UV absorber are key
Production & Quality PVA yellowing thermo-oxidation antioxidant UV absorber metal catalysis
2 visualizações
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Q
Internal inclusions of PU
A
Inclusions are caused by raw material and environmental pollution; filtration and environmental control are key
Production & Quality PU inclusions raw material filtration environmental cleanliness recycled material sorting
2 visualizações
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Q
Surface blooming of PU
A
Blooming is caused by low molecular migration and precipitation; selecting high molecular weight grade is fundamental
Production & Quality PU blooming low molecular migration high molecular weight lubricant precipitation
2 visualizações
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Q
PU stress cracking
A
Stress cracking is caused by stress-accelerated chemical attack; annealing and high MW are key
Production & Quality PU stress cracking environmental stress annealing treatment high molecular weight
2 visualizações
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Q
Surface micro-cracks of PU
A
Micro-cracks are caused by excessive internal stress; annealing and crack-resistant design are key
Production & Quality PU micro-cracks internal stress annealing treatment stress concentration design
2 visualizações
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Q
PU repeated processing performance degradation
A
Multiple processing performance degradation is caused by thermo-mechanical degradation; limiting regrind and supplementing antioxidants are key
Production & Quality PU recycling performance degradation antioxidant supplement thermal degradation shear degradation
2 visualizações
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Q
PU Product Yellowing After Processing
A
Yellowing is caused by thermo/photo-oxidation and metal catalysis; improving antioxidant system and UV absorber is key
Production & Quality PU yellowingthermo-oxidationantioxidantUV absorbermetal catalysis
2 visualizações
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Q
EVOH Internal Inclusions
A
Inclusions are caused by raw material and environmental contamination; filtration and environmental control are key
Production & Quality EVOHinclusionraw material filtrationenvironmental cleanlinessrecycling sorting
2 visualizações
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Todos os tópicos 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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