Amodel® PPA Outperforms Conventional Nylons

 

Polyphthalamides (PPA) outperform standard polyamides with higher strength and stiffness at elevated temperatures, better retention of properties in humid environments, and greater resistance to a broader range of chemicals.

With a heat deflection temperature of 280°C (536°F) and continuous-use temperature up to 210°C (410°F), Amodel® PPA (polyphthalamide) can take the heat in under-the-hood applications that are too demanding for conventional nylons and polyesters.

Air Induction Components

Amodel® PPA Outperforms Conventional Nylons

With a heat deflection temperature of 280°C (536°F) and continuous-use temperature up to 210°C (410°F), Amodel® PPA can take the heat in under-the-hood applications that are too demanding for conventional nylons and polyesters. This allows charge air cooler (CAC) housings, airflow valves, throttle bodies and other components molded from Amodel PPA to maintain their high strength and stiffness along with excellent creep and fatigue resistance when exposed to high heat and thermal cycling.

Key Features

  • Excellent mechanical properties over a broad range of operating temperatures and pressures
  • Continuous use up to 210°C (410°F)
  • Excellent resistance to automotive fluids, cleaners and road salts
  • Low moisture absorption
  • Excellent dimensional stability

Typical Applications

  • CAC Hot Air Ducts
  • CAC Housings
  • Diesel Airflow Valves
  • EGR Valves & Housings
  • Throttle Bodies
  • Turbocharger Housings

 

Air Induction System Turbocharger Components

Amodel® PPA Outperforms Conventional Nylons for Turbocharger Housings

With a heat deflection temperature of 280°C (536°F) and continuous-use temperature up to 210°C (410°F), Amodel® PPA can take the heat in under-the-hood applications that are too demanding for conventional nylons and polyesters. This allows charge air cooler (CAC) housings, airflow valves, throttle bodies and other components molded from Amodel PPA to maintain their high strength and stiffness along with excellent creep and fatigue resistance when exposed to high heat and thermal cycling.

Key Features

  • Excellent mechanical properties over a broad range of operating temperatures and pressures
  • Continuous use up to 210°C (410°F)
  • Excellent resistance to automotive fluids, cleaners and road salts
  • Low moisture absorption
  • Excellent dimensional stability

 

Cooling & Heating Systems

Full-Size Performance for Down-Sized Engines

Amodel® PPA has successfully replaced die-cast aluminum in engine coolant systems for over 15 years. This high-performance polyamide offers fundamental performance advantages over conventional polyamides due to its aromatic nature and is routinely used to replace metal in under-the-hood applications where heat, humidity and chemical resistance are major considerations.

Similar to Ryton® PPS, Amodel® PPA offers excellent dimensional stability in corrosive, high-temperature environments. In addition, it delivers better fatigue and impact resistance, better strength retention at 130°C (266°F) after prolonged exposure to engine coolants as well as faster cycle times when molding.

 

Fatigue Resistance Properties

Fatigue resistance at 32 Hz and 170°C (338°F)

Amodel-fatigue-resistance

 

 

Elongation Properties

Elongation at 130°C (266°F)

Amodel-elongation

 

Long-Life Coolant Exposure

Tensile strength after exposure to Long Life Coolant

Amodel-tensile-strength

 

Weldline strength after exposure to Long Life Coolant

Amodel-weld-line-strength

 

 

Tensile Fatigue Properties

Tensile fatigue at 10Hz and 150°C (302°F)

Amodel-tensile-fatigue

 

 

Electrical / Electronics Systems

Reliable High-Temperature Performance

Amodel® PPA is a family of high-temperature polyamides that retain their high strength and stiffness up to 280°C and maintain mechanical integrity after thousands of hours at elevated temperatures. Their low moisture absorption prevents blistering during IR soldering. These materials are highly resistant to many commonly used electronic cleaning agents, fuels, automotive fluids and road salts. Fast cycle times can lower molding costs.

Amodel® PPA resins are available in an wide variety of grades—including high strength, toughened, conductive, high flow, laser welding and flame retardant grades—giving you more ways to optimize performance, processing and price.

Key Features

  • High strength and stiffness
  • Continuous-use temperature from 120-185°C at 5,000 hours
  • Withstands SMT processing up to 280°C
  • Low moisture absorption prevents blistering
  • Excellent dimensional stability
  • High flow for thin-wall designs and precision overmolding
  • Excellent electrical insulating properties
  • Good adhesion to silicone and epoxy
  • Meets established OEM specifications
  • Resists automotive fluids, fuels and road salts

 

Fuel Systems

Amodel® PPA Replaces Metal

For over 15 years, Amodel polyphthalamide (PPA) has successfully replaced metal in fuel system components where heat is a major consideration. With a heat deflection temperature of 280°C and continuous-use temperatures from 120-180°C, Amodel PPA delivers the thermal performance you need for the short term as well as the long haul.

Key Features

  • High strength and stiffness
  • Ultra-low permeation
  • Bio-diesel and flex fuel compatibility
  • Long-term fuel contact from 60-125°C
  • Continuous use from 120-180°C
  • Resistance to automotive fluids, cleaners and road salts
  • ESD and toughened grades available

Typical Applications

  • Fuel flanges
  • Rollover valves
  • Quick connects
  • Filter housings
  • Fuel rails
  • Sender units
  • Fuel and vapor lines
  • Throttle bodies
  • Carburetors

 

Fuel Compatibility

The compatibility of Amodel® PPA with many current and potential future fuel blends was evaluated in extensive laboratory testing. This included exposure to bio-diesel, diesel, and diesel with aggressive water for 6,000 hours at 125°C (to simulate under-the-hood conditions) and exposure to fuel C, flex fuels, and auto-oxidized fuels for 5,000 hours at 60°C (to simulate fuel tank conditions).

Amodel® PPA showed low weight gain, little dimensional change, and excellent retention of mechanical properties over the range of fuels and temperatures evaluated. Please contact your Solvay representative for detailed test results.

Amodel® PPA Fuel Compatibility
Diesel
B20 SME
B20 RME
Fuel C
CE10
CM15

Average permeability rates over 28 days 
CE10 fuel (90% Fuel C, 10% ethanol) at 60°C

Amodel-average-permeation

 

Chemical Compatibility

Chemical Compatibility
Chemical Test Conditions Amodel® 
AT-1002
POM PA 6,6
Hydrochloric Acid, 5-10% 23°C, 1000 hrs Excellent Poor Poor
Hydrofluoric Acid, 1-5% 23°C, 1000 hrs Good Poor Poor
Nitric Acid, 5-10% 23°C, 1000 hrs Excellent Poor Poor
Sulfuric Acid, 5-10% 23°C, 1000 hrs Excellent Poor Good
Sulfuric Acid, 30-36% 23°C, 1000 hrs Excellent Poor Poor
Sulfuric Acid, 30-36% 40°C, 200 hrs Excellent Poor Poor
Zinc Chloride, 50% 23°C, 200 hrs Excellent Poor Poor

Mechanical Components

Amodel® PPA is a high-temperature polyamide that replaces metal where heat, humidity and chemical resistance are major considerations. Structrual grades offer improved weld line strength for larger, thicker parts.

Typical Applications

  • Brake systems
  • Suspension and hydraulics
  • Drivetrain