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문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

11636 질문
Q
Insufficient EVOH Toughness, Brittle Fracture
A
Insufficient toughness is caused by low molecular weight and coarse crystallization; selecting high MW is key
Material Analysis EVOHinsufficient toughnessmolecular weightcrosslinking controlcrystallization refinement
Q
Poor EVOH Antistatic Effect
A
Poor antistatic effect is caused by insufficient addition; increasing antistatic agent is key
Molding Process EVOHantistaticantistatic agentsurface resistancemigration rate
Q
Poor EVOH Chemical Resistance
A
Poor chemical resistance is caused by EVOH chemical affinity; selecting chemical-resistant grade and coating are key
Molding Process EVOHchemical resistancechemical attackslight crosslinkingsurface coating
Q
Strong Odor in EVOH Processing
A
Strong odor is caused by EVOH decomposition and volatilization; temperature control and ventilation are key
Material Analysis EVOHprocessing odorvolatilesventilation and exhausttemperature control
Q
EVOH Processing Temperature Fluctuation
Q
Large EVOH Creep Deformation
A
Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key
Material Analysis EVOHcreepslight crosslinkinghigh molecular weightrigid filler
Q
Insufficient EVOH Tensile Strength
A
Insufficient tensile strength is caused by molecular weight and poor interface; selecting high MW grade is key
Material Analysis EVOHtensile strengthmolecular weightcoupling agentorientation control
Q
EVOH Screw Slippage
A
Screw slippage is caused by premature melting; cooling the feed section is key
Extrusion & Post EVOHscrew slippagefeed section temperaturepremature meltingflight deepening
Q
Large EVOH Dimensional Change with Temperature
A
Dimensional temperature sensitivity is caused by large coefficient of thermal expansion; adding filler and annealing are key
Extrusion & Post EVOHdimensional temperature sensitivitycoefficient of thermal expansionrigid fillerannealing
Q
EVOH Surface Tiger Stripes
A
Tiger stripes are caused by unstable injection front; multi-stage injection and high mold temperature are key
Injection Molding EVOHtiger stripeinjection speedmulti-stage injectionmold temperature control
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