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Yaygın plastik malzeme zorluklarına pratik yanıtlar

Makalelere Göz At →
11636 soru
Q
Warpage in PU '2079851475616104452
A
Warpage is caused by shrinkage differences and orientation stress; uniform mold temperature and holding are key
Injection Molding PU injectionwarpageshrinkageholding pressureannealing
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Q
Delamination in PU Blending with Incompatible Resins
A
Blends with large polarity difference require reactive compatibilizer to form chemical bonding at the interface to solve it
Extrusion & Post PU blend delaminationpolarity differencePU-g-MAHreactive compatibilizationinterfacial bonding
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Q
Premature Gate Freezing in PU '2079851475616104452
A
Premature gate freezing is caused by small gate and low temperature; enlarging the gate and increasing temperature are the fundamental measures
Injection Molding PU injectiongate freezingholding pressure transmissiongate sizemold temperature
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Q
Die Buildup and Carbon Deposit in PU Extrusion
A
Die carbon deposit is caused by thermal oxidation and untimely cleaning; PE flushing and timely cleaning are key
Extrusion & Post PU extrusiondie carbon depositPE flushingstagnation zonethermal oxidation
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Q
Burnt Marks from Insufficient Mold Venting in PU '2079851475616104452
A
Burning is caused by insufficient venting and high-speed injection compressing air; increasing venting and reducing speed are key
Injection Molding PU injectionmold burningvent grooveinjection speedair compression
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Q
Pellet Sticking in PU Extrusion Pelletizing
A
Pellet sticking is caused by elastic recovery and low-temperature pelletizing; high-temperature water cutting and fast cutting are key
Extrusion & Post PU pelletizingpellet stickingpelletizing water temperaturecutter speedelastic recovery
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Q
Severe Parison Sag in PU Extrusion '2079851475616104457
A
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are key
Blow Molding PU '2079851475616104457parison sagmelt strengthslight crosslinkingwall thickness control
16 görüntüleme
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Q
Poor Interfacial Bonding Between PU and Filler
A
The elastomer-filler interface requires the dual action of coupling agent and compatibilizer, otherwise the filler plays a negative effect
Material Analysis PU fillerinterfacial bondingcoupling agentcompatibilizerfiller dispersion
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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
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Q
Dimensional Change of PU Products During Long-Term Storage
A
Dimensional change is caused by physical aging; annealing and slight crosslinking are the measures to stabilize dimensions
Material Analysis PU dimensional stabilityphysical agingannealingsecondary crystallizationslight crosslinking
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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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