Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PC architectural daylighting sheet

A

PC daylighting sheet impact resistance 200 times that of glass, first choice for architectural daylighting；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooti...

Extrusion & Post daylighting sheetimpact resistanceweather resistancearchitecture

Q

PC electronic and electrical housing

A

PC electronic housings impact resistant and flame retardant, mainstay of connectors and chargers；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooting similar...

Processing Machinery electronic housingflame retardantconnectorCTI

Q

PC automotive lamp lens

A

PC is standard for lamp lenses, transparency, heat resistance and impact resistance three-in-one；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooting similar...

Extrusion & Post lamp lenstransparencyheat resistanceimpact resistance

Q

PC sprue material cleanliness management

A

The value of regrind depends on cleanliness and heat history control; transparent and high-requirement parts should keep regrind out；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Material Analysis PC；sprue material；black speck；contamination；food grade

Q

PC flame retardant grade processing

A

Flame retardant PC is a superposition-sensitive system of formulation and process; strictly observing the temperature upper limit, strengthening drying, and frequent mold cleaning are the three elements of stable production；After confirming effectiveness, solidify the parameters and practices int...

Molds & Tooling PC；flame retardant；precipitation；silver streak；mold corrosion

Q

PC vs PMMA selection

A

PC versus PMMA, impact resistance versus hardness and optics；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooting similar problems in the future

Processing Machinery PMMA comparisonimpact resistancehardnessoptics

Q

PC assembly stress control

A

Assembly stress is a typical cause of delayed cracking; assembly loads must be included in the stress budget of PC parts at the design stage；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PC；assembly stress；screw boss；torque；interference

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 annealing treatment specification

A

Annealing is the standard post-treatment for PC to eliminate internal stress; temperature, time, and slow cooling three parameters are executed per specification, never fast-cool and waste previous efforts；After confirming effectiveness, solidify the parameters and practices into the work instruc...

Extrusion & Post PC；annealing；110-130℃；internal stress；slow cooling

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

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