Heat-resistant PPA GF30 Plastic

PPA
Full name: Polyphthalamide.
Nature: A semi-aromatic high-temperature nylon. Compared with conventional nylons (PA6, PA66), its molecular chains incorporate rigid benzene ring structures.

Core Features:
Excellent high-temperature resistance: Long-term use temperature typically exceeds 180°C; heat deflection temperature (HDT) is much higher than ordinary nylon.
Outstanding mechanical strength and rigidity.
Good chemical resistance: Particularly resistant to automotive fluids such as fuel, engine oil, and coolant.
Low moisture absorption: Offers better dimensional stability than conventional nylon and performance is less affected by humidity.

Drawbacks:
Pure PPA resin is relatively brittle, with moderate impact strength and poorer processing flowability.

Main Applications:
Automotive engine components (sensor housings, junction boxes)
Electronic connectors requiring SMT (Surface-Mount Technology)
Heat-resistant parts in household appliances (iron, internal components of coffee machines)

Glass Fiber Reinforced PPA: GF30 PPA
Full name / composition: PPA with 30% Glass Fiber.
Nature: Uniformly mixed with 30% short-cut glass fibers in the PPA matrix; the most commonly used and cost-effective reinforcement method.

Differences from pure PPA:
Significant improvements: Tensile strength, flexural strength, flexural modulus (rigidity), fatigue resistance, creep resistance.
Enhanced: Dimensional stability, heat deflection temperature.
Possible reductions: Impact toughness (slightly more brittle), anisotropy (different shrinkage rates along flow and transverse directions).

Main Applications:
Automotive: Throttle bodies, exhaust gas recirculation (EGR) components, turbocharger intake pipes, structural brackets.
Electronics and electrical: Complex thin-wall connectors, coil bobbins, miniature switches.
Industrial: Pump housings, gears, bearing cages, and other components requiring high strength and heat resistance.