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Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
11636 soru
Q
Poor fatigue resistance of PU
A
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; increasing crosslinking is key
Molds & Tooling PU fatigue resistance crosslinking degree molecular weight stress concentration
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Q
PU length out of tolerance
A
Length out of tolerance is caused by unstable shrinkage; precise shrinkage compensation is key
Molds & Tooling PU length out of tolerance shrinkage mold compensation full cooling
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Q
Obvious surface color difference of PU
A
Color difference is caused by uneven dispersion and orientation; masterbatch method and stable processing are key
Injection Molding PU color difference color masterbatch dispersion pigment orientation temperature stability
15 görüntüleme
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Q
Material overflow at PU vacuum section
A
Overflow is caused by low melt viscosity; temperature reduction and baffle are key
Extrusion & Post PU vacuum section overflow melt viscosity temperature reduction vent baffle
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Q
Orange peel texture on PU surface
A
Orange peel is caused by rapid cooling and solidification; increasing mold temperature and holding pressure are key
Injection Molding PU orange peel mold temperature holding pressure surface solidification
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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
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Q
Severe internal stress concentration of PU
A
Internal stress is caused by fast injection and uneven cooling; speed reduction, uniform cooling and annealing are key
Injection Molding PU internal stress orientation stress annealing treatment uniform cooling
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Q
Dense surface pits of PU
A
Pits are caused by raw material impurities and mold damage; pure raw material and mold maintenance are key
Extrusion & Post PU surface pits impurity particles mold repair raw material purity
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Q
Difficult PU purging
A
Difficult purging is caused by strong PU adhesion; PE flushing and temperature reduction are key
Processing Machinery PU difficult purging adhesion PE flushing special purging compound
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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
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Tüm Konular 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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