메뉴
재료 기계
인사이트
기사 동영상 문제 및 해결책
About
Chembull 소개 미디어 파트너
문의하기
언어
EnglishالعربيةPortuguêsEspañolDeutschTürkçe한국어

문제 및 해결책

일반적인 플라스틱 재료 문제에 대한 실질적인 답변

11636 질문
Q
Unsatisfactory toughening effect of modified cellulose acetate butyrate
A
Toughening effect needs to be addressed from addition amount, compatibility and dispersion
Material Analysis tougheningimpact strengthcompatibilitydispersion
Q
White streaks or whitened areas appear at stressed or bent parts of the product
A
Whitening is caused by excessive residual stress; stress needs to be reduced
Extrusion & Post whiteningstress whiteningresidual stressannealing
Q
Irregular deformation of the product after demolding
Q
Linear marks appear around multiple gates or holes of the product
A
Q
Glass fiber PA requires special process parameters to avoid floating fiber and property fluctuation
A
Glass fiber PA requires medium speed and high mold temperature
Injection Molding glass fiber PAinjection speedfloating fibermold temperature
Q
Front zone temperature directly affects the temperature and flowability of the melt entering the cavity
A
Front zone temperature needs stable control near the recommended upper limit
Injection Molding front zone temperaturemelt temperaturethermal stability
Q
Obvious depressions at thick-wall areas of the product (rib roots, back of bosses)
Q
Plastic cracking around metal inserts is a common problem
A
Insert molding requires preheating and increasing surrounding wall thickness
Material Drying insertshrinkage differencepreheatingwall thicknessPA
Q
Product dimensions out of tolerance range
A
Dimension out of tolerance requires stable process conditions and moisture control
Material Drying dimension out of toleranceshrinkagemoistureprocess stability
Q
Product shows multiple defects (silver streaks, burnt, short shot, etc.)
A
Barrel temperature needs to be stably set according to the material recommended range
Processing Machinery barrel temperaturetemperature controlplasticizationcellulose acetate butyrate
ChemAI