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Classification of Thermoplastics
PBI
Imidized
PI
PAI
PEI PEEK Advanced Engineering
PPSU PPS
PSU PTFE
PC PET PBT
PPO POM PA Engineering
PMMA UHMWPE
ABS PP
PS HDPE Standard
PVC LLDPE
Amorphous Polymers Crystalline Polymers
Broad softening range Sharp melting point
Usually transparent Usually opaque
Low Shrinkage High shrinkage
Solvent Sensitive Solvent resistant
Poor fatigue / wear Fatigue/ wear resistance
High stress craze Low stress craze
Low tensile strength High tensile strength
High melt viscosity Low melt viscosity
Low specific gravity High specific gravity
High ductility & elongation Lower ductility& elongation
Low creep resistance High creep resistance
Max. usage temperature : Lower Max.usage temperature: Higher
Easier to process, Dimensional stability Higher heat resistance
Examlpes: Acrylic (PMMA) Examlpes: Acetal (POM)
Acrylonitrile-butadiene-styrene (ABS) Polyester (PET, PBT)
Polycarbonate (PC) Polyamide (nylon)(PA)
Modified polyphenylene oxide (PPO) Fluorocarbons (PTFE,etc)
Polystyrene (PS) Polyethylene (PE)
Polyvinyl chloride (PVC) Polypropylene (PP)
DAVE TECHNICAL SERVICES 4
