Problem & Solution

Practical answers to common plastic material challenges

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PEEK pellets rapidly regain moisture after drying

PEEK's sensitivity to moisture requires moisture protection throughout the process

Material Drying moisture regainhygroscopicitydrying hoppersealed storageworkshop dehumidification

Insufficient melt flowability, mold filling difficulty

Material Drying flowabilityprocessing temperaturemelt viscositymolecular weightPEEK grade

Product bubbles/internal pores

Material Drying bubblesdryingmoisture contentdew pointholding pressure

PAN solvent residue affecting carbonization

Solvent residue is an important source of carbon fiber defects

Material Drying solvent residuewater washingdryingporescarbonization

PAN precursor high breakage rate

The quality of PAN precursor determines the grade of the final carbon fiber

Material Drying breakagespinneretfiltrationcoagulation bathprecursor

PAI processing comprehensive problem - drying and dehydration

Material Drying PAIdrying and dehydrationprocessing qualityprocess optimizationequipment management

PAI product bubbles and pores

PAI is extremely sensitive to moisture

Material Drying bubblesdryingmoisture contentvented screwholding pressure

PAEK processing comprehensive problem - drying control

Material Drying PAEKdrying controlprocessing qualityprocess optimizationequipment management

PAEK product bubbles/internal pores

Material Drying bubblesdryingmoisture contentholding pressurePAEK

Fiber-matrix interface moisture absorption causing performance deterioration

Water penetration along the interface is an accelerating factor of performance aging

Material Drying moisture absorptioninterfacesilane coupling agentKH-550hydrophobicitysealing treatment

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