Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Strong Odor in EVOH Processing

Material Analysis EVOHprocessing odorvolatilesventilation and exhausttemperature control

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 Hardness Too High

Material Analysis EVOHhigh hardnesscrystallinityfiller amountplasticizer

Fast EVOH Thermal Aging

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

Material Analysis EVOHthermal agingthermo-oxidationantioxidanthigh molecular weight

Low EVOH Elongation at Break

Material Analysis EVOHelongation at breakmolecular weightorientation controlcrosslinking degree

Fast UV Aging of EVOH

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

Material Analysis EVOHUV agingUV absorberHALSradical scavenging

Unstable EVOH Shrinkage

Material Analysis EVOHshrinkagebatch differencetemperature control stabilitycrystallization consistency

Poor EVOH Weather Resistance

Material Analysis EVOHweather resistanceUV absorberHALSphoto-oxidation

EVOH heat-sensitive degradation and discoloration

Material Analysis EVOH thermal decomposition dealcoholization yellowing heat stabilizer temperature control

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