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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

11636 perguntas
Q
POE surface periodic corrugation
A
Corrugation is caused by injection instability; equipment overhaul and PID control are key
Injection Molding POEsurface corrugationinjection stabilityequipment overhaulPID control
Q
POE internal inclusions
A
Inclusions are caused by raw material and environmental contamination; filtration and environmental control are key
Production & Quality POEinclusionsraw material filtrationenvironment cleanlinessrecycling sorting
Q
POE hardness too low
A
Low hardness is caused by soft material and excessive plasticization; adding filler is key
Molding Process POEhardness lowrigid fillerplasticizercrystallization control
Q
POE flatness insufficient
A
Insufficient flatness is caused by shrinkage difference and stress; uniform cooling and annealing are key
Molds & Tooling POEflatnessshrinkage differenceuniform mold temperatureannealing treatment
Q
POE internal unmelted particles
A
Unmelted particles are caused by insufficient plasticization; raising temperature and reducing feeding are key
Processing Machinery POEunmelted particlesplasticizing capacityprocessing temperaturescrew mixing
Q
POE toughness insufficient, brittle fracture
A
Insufficient toughness is caused by low molecular weight and coarse crystallization; selecting high MW is key
Material Analysis POEtoughness insufficientmolecular weightcrosslinking controlcrystallization refinement
Q
POE impact strength fluctuation large
A
Impact fluctuation is caused by dispersed phase and crystallization instability; stabilizing processing is key
Molding Process POEimpact fluctuationdispersed phase particle sizenucleating agentprocessing stability
Q
POE internal shrinkage voids
A
Shrinkage voids are caused by thick-wall shrinkage and insufficient holding; extending holding is key
Molds & Tooling POEshrinkage voidthick wallholding timegate freezing
Q
POE toughened PP heat deflection temperature drops
A
Toughening is accompanied by HDT drop, requiring filler reinforcement compensation
Molding Process POE toughened PPHDT droptalc reinforcementnucleating agentcopolymer PP
Q
POE creep deformation large
A
Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key
Material Analysis POEcreepslight crosslinkinghigh molecular weightrigid filler
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