polyphthalamide

polymer

Polyphthalamide (PPA) is a semi-aromatic polyamide engineering thermoplastic that combines the backbone structure of nylon with aromatic phthalamide units, delivering higher thermal stability and stiffness than conventional polyamides. It is widely used in automotive under-hood components, electrical connectors, pump housings, and industrial machinery where sustained heat resistance and dimensional stability are critical. Engineers select PPA over standard nylon grades when applications demand performance at elevated temperatures combined with good chemical resistance and lower moisture absorption, making it particularly valuable in engine compartments and power electronics where thermal cycling and harsh fluids are present.

automotive under-hood componentselectrical connectors and housingspump impellers and casingsindustrial machinery bushingspower electronics enclosuresfluid system manifolds

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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K——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.