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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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11636 perguntas
Q
DSTDP extrusion '2079851475616104457 severe parison sag
A
Parison sag is caused by low melt strength; slight crosslinking and wall thickness control are key
Blow Molding DSTDP '2079851475616104457parison sagmelt strengthslight crosslinkingwall thickness control
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Q
DSTDP product dimensional change during long-term storage
A
Dimensional change is caused by physical aging; annealing treatment and slight crosslinking are the measures to stabilize dimensions
Material Analysis DSTDP dimensional stabilityphysical agingannealingsecondary crystallizationslight crosslinking
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Q
DSTDP blended with incompatible resins delamination
A
Blends with large polarity differences require reactive compatibilizers that form chemical bonding at the interface to solve
Extrusion & Post DSTDP blend delaminationpolarity differenceDSTDP-g-MAHreactive compatibilizationinterfacial bonding
15 visualizações
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Q
DSTDP '2079851475616104452 thick-wall bubbles
A
Thick-wall bubbles are caused by a combination of insufficient holding pressure, moisture and poor venting
Material Drying DSTDP injectionbubblesholding pressurethick-wall productmold venting
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Q
DSTDP extrusion melt fracture
Q
DSTDP '2079851475616104452 demolding difficulty
A
Demolding difficulty is caused by adhesion and insufficient mold design; increasing demolding draft is the fundamental measure
Injection Molding DSTDP injectiondemolding difficultydemolding draftadhesionejection design
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Q
Poor interfacial bonding between DSTDP and filler
A
The elastomer-filler interface requires the dual action of coupling agent and compatibilizer, otherwise the filler plays a negative effect
Material Analysis DSTDP fillerinterfacial bondingcoupling agentcompatibilizerfiller dispersion
16 visualizações
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Q
Elliptical Deformation of CMC Products
A
Elliptical deformation is caused by asymmetric demolding force; uniform ejection is the key
Molds & Tooling CMCelliptical deformationsymmetric ejectionuniform coolingsetting time
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Q
Internal Delamination Cracking of CMC
A
Internal delamination is caused by poor interface and shrinkage differences; compatibilizer and uniform cooling are the key
Extrusion & Post CMCinternal delaminationinterfacial adhesioncompatibilizeruniform cooling
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Q
Snakeskin Pattern on CMC Surface
A
Snakeskin pattern is caused by low-temperature extrusion and elastic recovery; temperature increase and speed reduction are the key
Extrusion & Post CMCsnakeskin patternextrusion temperatureelastic recoverydie temperature control
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Todos os tópicos 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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