pai plastic
Polyamide-imide (PAI plastic) is a thermoplastic that exhibits outstanding mechanical, thermal, and chemical resistant features. The material can be used in heat applications since it can tolerate operating temperatures of around 260 degrees Celsius or 500 degrees Fahrenheit continuously. PAI is known for its high-temperature strength, rigidity and abrasion resistance thus meeting even the rigorous applications.
Amorphous thermoplastic containing high performance polymer.
Polyamide-imide, in most cases referred to as proprietary Torlon® brand.
Can undergo compression and injection molding, extrusion (currently underdevelopment).
Kingsun's senior machining engineer
pai plastic Properties
Mechanical Properties
- Each unit tensile and crushing strenth is high
- Impressive stiffness and strength
- Good wear properties
Physical Properties
- Casting dimensional accuracy is high
- Very low expansion of solids with heat
- Weaker than Karmar but respectably impact able
Thermal Properties
- Very high heat deflection temperature
- Thermal stability is maintained up to 275° C
- Up to 400 °C glass transition temperature
Electrical Properties
- Decent electrical insulation
- Has self-extinguishing abilities
Post Treatments
- Strengthening Filler Modification Fingerprint Shape-adding Strength with glass or carbon fibers
- Improvement of sliding properties by SM or other PTFE
Common Applications
- Semiconductor Industry: Test sockets, connectors, electrical insulators
- Aerospace: Fasteners, insulation, structural parts
- Oil and Gas: Components for natural gas compressors, pump parts, labyrinth seals
- General Industry: Metal spinning tools, metal substitutes, bearing and wear parts.
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Frequently Asked Questions (FAQs)
Q: What is PAI plastic, often used in various engineering applications?
A: PAI (Polyamide-imide) plastic or Torlon® is one of the highest performance thermoplastic materials that can boast of outstanding strength, stiffness, and thermal properties. This copolymer belongs to the family of high temperature resins and is made use for troublesome engineering work applications because of its remarkable mechanical and chemical properties, including high compressive strength.
Q: What are the key properties of Torlon® PAI?
A: Besides these, Torlon® PAI also has many other advantages such as high strength and stiffness, wear resistance, low thermal expansion, excellent dimensional stability, and impressive compressive properties. The polymer has modest chemical resistance but can withstand use at high temperatures without any deterioration in properties.
Q: How does PAI compare to other engineering plastics?
A: PAI plastic is also called Torlon® and is among the best performing thermoplastic polymers. It is more resilient and resistant to wear than most thermosetting and thermoplastic engineering resins. PAI and PEEK have comparable high-temperature properties but PAI brings higher strength and stability in shape than PEEK.
Q: For what purposes PAI materials are usually used?
A: PAI materials find application primarily in aerospace, automotive, and industrial markets. High-temperature sealing elements, bearings, bushings, valve seats, and a variety of engine, pump, and compressor parts are the major applications for Torlon® PAI plastic. Because of its high strength and wear resistance, it is also well suited to extreme performance parts.
Q: In whatever way do you process Torlon PAI?
A: Torlon PAI is processed by injection molding, by means of extrusion or by punching. Right processing methods are chosen based on the application and shape. Fabricated components of PAI will undergo a post cure so that they possess the ultimate properties required.
Q: Can one say that PAI stock shapes, often used in various industries, can also be found in the market?
A: Yes, PAI stock shapes are available for sale and include among others, PAI rods, sheets and tubes. Such stock shapes can be further machined into parts to meet particular needs of the clients, design and manufacture. PAI stock shapes, often used for prototype or small scale production, are mainly advantageous for their versatility.
Q: PAI What are the tribological properties?
A: PAI has very good tribological properties, thus it is used in bearing and wear applications. It has low friction and a high wear resistance which are stable even at high temperatures. All these properties lead to the high PAI performance of parts in moving assemblies working under high temperature and mechanical load.
Q: What is the performance of PAI regarding chemical exposure at elevated temperatures?
A: PAI plastics are characterized by good performance in a variety of aggressive environments, particularly at elevated temperatures. Specifically, PAI products have fair resistance to most oils, fuel, solvents and many other chemicals. However, such resistance may differ with the type of the chemical, its concentration and other conditions of exposure. It’s often best to check with the producer or carry out some testing for particular uses, especially when considering molded PAI options.
Q: What is the range of low to high temperature for PAI, particularly in terms of its physical properties?
A: PAI may withstand severe cold temperature up to the range of -4600F (2700C) and the continuous usage upper limit temperatures of4500F (2300C). For maximum short term use though one may safely risk exposing it to even higher temperatures than that. This feature makes PAI effective even in fields of applications that other plastics cannot survive, especially under compression.
Q: Should we expect the PAI properties to be consistent across many grades of the material?
A: Yes, PAI comes in different grades such as unfilled, fiber-reinforced, wear protective, and other modified grades, including those specifically designed for high compressive strength. These variations in grades make it possible to meet the required material properties for a given application, including enhanced creep resistance. For example, fibers-reinforced grades have the advantage of increased strength and stiffness while wear and tear resistant grades have enhanced tribological characteristics, making them suitable for demanding applications.