Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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Q

PEEK Coefficient of Thermal Expansion Tg Jump

A

CTE doubles on both sides of 143℃; precision parts should avoid working across the Tg range; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problem...

Molding Process coefficient of thermal expansionTgdimensional chainprecision fitting

Q

PEEK Cooling Time Far Exceeds Conventional Plastics

A

PEEK cooling involves crystallization latent heat — doubling the time is normal, do not forcibly compress the cycle; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting ...

Molding Process cooling time crystallization latent heat ejection deformation cycle

Q

Poor Insert Bonding of PEEK

A

The core contradiction of PEEK insert parts is thermal expansion mismatch; preheating and mechanical interlock are the two basic means; interface verification must include temperature cycling conditions.; After confirming effectiveness, solidify the parameters and practices into the work instruct...

Molding Process PEEK；insert；interface；thermal expansion；preheating；interlock

Q

Cutting and Welding Problems of PE Pipe

A

Cutting and welding of PE pipe is 'the back-end process determines success or failure': saw blade and synchronization govern cutting, end-face treatment and parameters govern welding; weld strength = end-face treatment + parameter standardization.

Molding Process PE；pipe；cutting；hot-melt welding；weld seam

Q

Material Buildup on the Sizing Sleeve of HDPE Pipe

A

HDPE sizing sleeve buildup = 'volatilization and condensation': lower the temperature, clean frequently, and control raw material — three measures at once; buildup scratching is gradual, so regular maintenance is more economical than after-the-fact handling.

Molding Process HDPE；pipe；sizing sleeve；buildup；precipitation

Q

Structural Factors of PC Stress Cracking

A

Structural design determines the upper limit of the stress distribution of PC parts; fillets, uniform wall thickness and gentle transitions are the three anti-crack design principles, which must be implemented before mold making; after confirming effectiveness, solidify the parameters and practic...

Molding Process PC;stress concentration;fillet;wall thickness;notch sensitivity

Q

PC solvent-induced cracking

A

Solvent cracking is the superposition of residual stress and chemical attack; controlling the chemical list and reducing residual stress are both indispensable；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molding Process PC；solvent cracking；crazing；alcohol；cleaning agent

Q

PC metal insert preheating

A

The expansion mismatch between inserts and PC is a structural contradiction; preheating, thickening, and reducing inserts are used together, and design changes to bypass inserts when necessary；After confirming effectiveness, solidify the parameters and practices into the work instruction to preve...

Molding Process PC；metal insert；preheating；thermal expansion；cracking

Q

PCABS melt temperature window

A

The ratio dependence of PCABS melt temperature is a material characteristic; 300℃ is the degradation red line; actual measurement prevents display errors.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molding Process PCABS；melt temperature；220-280℃；ratio；300℃；actual measurement

Q

PC Anti-UV Grade Yellowing

A

Outdoor PC 'must be equipped with a UV protection solution': ordinary PC not being sun-resistant is the material's nature; consider anti-UV at the material selection stage, as afterwards remediation is costly and ineffective.

Molding Process PC; yellowing; ultraviolet; anti-UV; aging

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