المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

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Insufficient EVOH Toughness, Brittle Fracture

Material Analysis EVOHinsufficient toughnessmolecular weightcrosslinking controlcrystallization refinement

Poor EVOH Antistatic Effect

Molding Process EVOHantistaticantistatic agentsurface resistancemigration rate

Poor EVOH Chemical Resistance

Molding Process EVOHchemical resistancechemical attackslight crosslinkingsurface coating

Strong Odor in EVOH Processing

Material Analysis EVOHprocessing odorvolatilesventilation and exhausttemperature control

EVOH Processing Temperature Fluctuation

Molding Process EVOHtemperature fluctuationPID tuningheater bandthermocouple

Large EVOH Creep Deformation

Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key

Material Analysis EVOHcreepslight crosslinkinghigh molecular weightrigid filler

Insufficient EVOH Tensile Strength

Material Analysis EVOHtensile strengthmolecular weightcoupling agentorientation control

EVOH Screw Slippage

Screw slippage is caused by premature melting; cooling the feed section is key

Extrusion & Post EVOHscrew slippagefeed section temperaturepremature meltingflight deepening

Large EVOH Dimensional Change with Temperature

Extrusion & Post EVOHdimensional temperature sensitivitycoefficient of thermal expansionrigid fillerannealing

EVOH Surface Tiger Stripes

Injection Molding EVOHtiger stripeinjection speedmulti-stage injectionmold temperature control

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