Problem & Solution

Practical answers to common plastic material challenges

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Q

PVC Recycling Challenge

A

The inherent shortcoming of PVC recycling is stabilizer consumption; limiting amount, supplementing stabilizer, and classification are the three principles of recycled use; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Analysis PVC;recycling;stabilizer;blending ratio;classification

Q

PVC Inherent Flame Retardancy Advantage

A

Inherent flame retardancy is PVC's core competitiveness; PVC should have a default seat in the material selection list for electrical and electronic applications; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Analysis PVC;flame retardant;oxygen index 45%;self-extinguishing;electrical

Q

PVC Profile Low Weld Corner Strength

A

PVC weld corner strength = 'plasticization quality + welding process': plasticization is the foundation, welding is the surface; poorly plasticized material cannot be welded firmly no matter what — ensure plasticization first, then talk about welding parameters.

Material Analysis PVC; profile; weld corner strength; welding; plasticization

Q

PVC Plate-out

A

PVC plate-out = a 'formula compatibility' problem: process can only alleviate, formula is the root; if lubrication balance is not done well, the die surface keeps 'spitting scale', and cleaning the die until hands are sore cannot cure the root.

Material Analysis PVC; plate-out; Plate-out; lubricant; stabilizer

Q

PVC Poor Plasticization (Unmelted Material)

A

PVC plasticization = the triangle of 'temperature + shear + lubrication balance': under-plasticized products look strong but are actually very brittle; excessive external lubrication is the hidden culprit, gelation degree should be monitored as a process indicator.

Material Analysis PVC; poor plasticization; fish-eye; lubrication balance; gelation

Q

PTFE Cracking and Fracture

A

PTFE cracking requires cooling management, filler balance, and handling protection together; filler reinforcement and toughness trade off against each other; machining force control is a detail.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent...

Material Analysis PTFE;cracking;fracture;cooling;filler;machining

Q

PTFE Sintering Opacity

A

PTFE sintering opacity is a signal of insufficient temperature and time; but the premise of adjustment is resin thermal stability; transparency verification should be included in inspection.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent rec...

Material Analysis PTFE;sintering;opacity;temperature;holding;thermal stability

Q

PESU Cost and Cost-Performance Positioning

A

PESU is the cost-performance sweet spot of specialty transparency, cheaper than PEI and stronger than PC; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Analysis PESU costcost-performancePEIbudget

Q

PESU Aircraft Interior Low-Smoke Application

A

PESU is flame-retardant-free V-0 low smoke, the chosen material for aviation interiors; after confirming effectiveness, fix 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 ...

Material Analysis PESU flame retardantlow smokeaviation interiorV-0

Q

PSU Hemodialysis Membrane Application

A

PSU/PES are dual mainstreams for dialysis membranes, and multi-sterilization tolerance is the entry threshold; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Analysis dialysis membranehollow fiberbiocompatibilitysterilization

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