المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

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Insufficient PVA toughness, brittle fracture

Material Analysis PVAinsufficient toughnessmolecular weightcrosslinking controlcrystallization refinement

Large fluctuation of PVA impact strength

Molding Process PVAimpact fluctuationdispersed phase particle sizenucleating agentprocessing stability

Poor PVA chemical resistance

Material Analysis PVAchemical resistancechemical attackslight crosslinkingsurface coating

Large odor in PVA processing

Material Analysis PVAprocessing odorvolatilesventilation and exhausttemperature control

PVA internal shrinkage voids

Molds & Tooling PVAshrinkage voidthick wallholding timegate freezing

Large PVA creep deformation

Material Analysis PVAcreepslight crosslinkinghigh molecular weightrigid filler

Poor PVA antistatic effect

Molding Process PVAantistaticantistatic agentsurface resistancemigration rate

PVA processing temperature fluctuation

Material Analysis PVAtemperature fluctuationPID tuningheater bandthermocouple

Insufficient PVA tensile strength

Material Analysis PVAtensile strengthmolecular weightcoupling agentorientation control

PVA screw slipping

Extrusion & Post PVAscrew slippingfeed section temperaturepremature meltingflight deepening

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