Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Q

PESU Membrane Material Solvent Selection

A

Green solvent substitution for PESU membranes is now feasible, formulation readjustment plus performance verification; 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 troub...

Material Analysis PESU membranegreen solventultrafiltrationcasting solution

Q

PSU Long-term Use Temperature

A

175°C is the PSU long-term performance line; over-temperature service requires switching to PESU or PEI; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis long-term use temperature Tg creep selection

Q

PSU Steam Sterilization Cycle Management

A

PSU sterilization resistance has a cycle upper limit; switching to PESU is safer for high-cycle situations; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis steam sterilization sterilization cycles medical devices aging

Q

Utilization of PSU Shear-insensitive Characteristic

A

PSU is shear insensitive; raising temperature is the right way to reduce viscosity; speed increase yields little benefit; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference ...

Material Analysis shear insensitivity temperature viscosity adjustment low orientation process

Q

PSU Melt Temperature and Viscosity Steep Slope

A

PSU viscosity halves every 30°C; make good use of the steep slope but hold the degradation upper limit; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis melt temperature viscosity steep slope filling degradation

Q

PSU Grade Selection Mistake

A

PSU grade selection is a trade-off between performance and processability; data sheets and trial molding verification are both emphasized; matching with operating conditions is fundamental.; After confirming effectiveness, solidify the parameters and practices into the work instructions to preven...

Material Analysis PSU; grade; selection; performance; processability; verification

Q

PSU Food Contact Safety

A

PSU food contact compliance is a prerequisite for market access; grade certification and test data are both indispensable; archive management responds to audits.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis PSU; food contact; migration; compliance; certification; testing

Q

PSU Ring-type Check Valve Wear

A

PSU check valve selection has clear recommendations; wear inspection is included in preventive maintenance; metering stability directly reflects valve condition.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Material Analysis PSU; check valve; wear; metering; ring type; sealing

Q

PSU Internal Stress Difficult to Eliminate

A

Internal stress management is the fate of rigid, fast-cooling materials like PSU; high mold temperature and annealing are the two pillars; stress cracking verification must simulate the actual environment.; After confirming effectiveness, solidify the parameters and practices into the work instru...

Material Analysis PSU; internal stress; cracking; annealing; mold temperature; rigidity

Q

PSU Decomposition Due to Excessive Melt Temperature

A

The double-edged sword nature of PSU temperature management is distinct; the sharp viscosity drop near 330°C is both an opportunity and a trap; ±5°C temperature control accuracy is a hard requirement.; After confirming effectiveness, solidify the parameters and practices into the work instruction...

Material Analysis PSU; melt temperature; decomposition; carbonization; viscosity; temperature control

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