GETA QUOTE
Low moisture absorption, good dimensional stability: in environments with fluctuating humidity and temperature, tube dimensions vary less, helping sealability and system reliability.
Good resistance to fuels and chemicals: resistant to gasoline, diesel, ethanol-blended fuels, lubricants, etc., with low permeability.
Good durability and low-temperature flexibility: remains flexible in cold conditions, reducing risk of cracking and fracture.
Easy processing and extrusion-forming: can be produced into extruded tubes/hoses and fittings, facilitating mass production and part integration.
Common application scenarios
Fuel lines: used in low-pressure fuel return lines and in hoses/pipes in intake/exhaust systems, especially in areas that require certain flexibility and damping.
Vacuum and air lines: engine intake, brake booster vacuum lines, and hoses in exhaust gas recirculation (EGR) systems.
Other chemical media piping: for lubricants, coolant, and cleaning fluids; PA1012’s chemical compatibility is generally better than that of many conventional resins, though specifics depend on medium concentration and temperature.
Design and processing considerations
Processing methods: extrusion, blow molding/stretching, and injection-molded fittings. In piping systems, extruded tubes/hoses are predominant, connected with appropriate fittings.
Drying and moisture control: PA1012 should be dried before processing; typical target moisture is below about 0.2% (specific to resin grade and equipment). Wet material can degrade during melt and reduce mechanical properties.
Temperature and melt conditions: melt temperatures are typically in the higher range (depending on grade and wall thickness); control is needed to avoid degradation and stress concentration.
Reinforcement and modification options: adding glass fiber (PA1012GF) to increase stiffness and pressure resistance, or applying surface/coating treatments to improve wear resistance and chemical protection.
Bonding with other materials: bonding to different materials requires compatible adhesives and surface treatments to ensure sealing and durability.
Selection considerations
Chemical medium: confirm compatibility with fuels (gasoline, ethanol, biodiesel, etc.) and their concentrations to avoid swelling or degradation.
Operating temperature and pressure: PA1012 has limitations in temperature, bending, and pressure endurance; low-pressure fuel lines or vacuum lines are typically more suitable, while high-pressure fuel systems may require metal tubes or higher-strength polymer solutions.
Bend radius and dimensions: when space is limited, choose appropriate bend radius and nominal diameter, and consider thermal expansion/contraction.
Strength and stiffness requirements: for components subject to mechanical impact or higher load, consider PA1012GF or other high-strength options.
Cost and supply: PA1012 can be more expensive than some other thermoplastics; weigh cost, supply stability, and recyclability.
Cautions and limitations
Drying and moisture management are critical; wet material affects strength, toughness, and dimensional stability.
Prolonged exposure to high temperatures or aggressive chemical environments may require additional modification or alternative materials.
In high-pressure fuel systems, critical parts may still require metal tubing or higher-strength polymer solutions to avoid exceeding material limits.
Compatibility data should be based on specific grade data sheets, as different manufacturers’ additives/grades can affect performance.
Future trends and sustainability
As fuel systems demand lower permeation and higher chemical resistance, PA1012 applications will expand, especially in low-pressure fuel lines, exhaust lines, and air/vacuum systems.
Through modification (reinforcements, coatings) and recycling, the cost-effectiveness and environmental footprint of PA1012 are likely to improve.
