المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

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Fast thermal aging of PU

Thermal aging is caused by thermo-oxidation; improving the antioxidant system is key

Material Analysis PU thermal aging thermo-oxidation antioxidant high molecular weight

Fast UV aging of PU

Fast UV aging is caused by photo-oxidation; UV absorber and HALS are key

Material Analysis PU UV aging UV absorber HALS free radical scavenging

Unstable shrinkage of PU

Material Analysis PU shrinkage batch difference temperature control stability crystallization consistency

Poor weather resistance of PU

Material Analysis PU weather resistance UV absorber HALS photo-oxidation

Poor Interfacial Bonding Between PU and Filler

Material Analysis PU fillerinterfacial bondingcoupling agentcompatibilizerfiller dispersion

Dimensional Change of PU Products During Long-Term Storage

Material Analysis PU dimensional stabilityphysical agingannealingsecondary crystallizationslight crosslinking

EVOH Flexural Modulus Too Low

Material Analysis EVOHflexural modulusrigid fillernucleating agentcrystallinity

EVOH Hydrolytic Aging

Material Analysis EVOHhydrolytic agingpolar groupanti-hydrolysis stabilizerwaterproof coating

Heavy Smoke in EVOH Processing

Heavy smoke is caused by volatile evaporation; cooling and exhaust are key

Material Analysis EVOHprocessing smokevolatilesexhaust systemcooling

Insufficient EVOH Toughness, Brittle Fracture

Material Analysis EVOHinsufficient toughnessmolecular weightcrosslinking controlcrystallization refinement

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