High-performance polyamide (HPPA) is a type of synthetic thermoplastic resin from the polyamide family. It is a polyamide wherein the residues of terephthalic acid contain at least 55% of the molar percentage of dicarboxylic acid present in structural units in the polymer chain. Polymers are added to the HPPA resin to make it useful for specific applications. The combination of polymers and additive is referred to as a composite. Ingredients added to produce composites include minerals, flame retardants, fiberglass, and other chemicals. The aromatic content is supplemented in the form of isophthalic acid or terephthalic acid. The special monomeric structure of amorphous polyamides imparts heat resistance and transparency. Advantages of high-performance polyamides include high melting point, reduced absorption of moisture, improved dimensional stability, and better retention of mechanical property at high temperature.
High-performance polyamides are injection-molded into parts of different shapes that are used in a wide variety of applications. Temperature resistance, mechanical strength, and weight reduction by replacing metal parts of an automotive are factors driving the market for HPPA. Nomex and Kevlar are fibers made from aromatic polyamides, which offer high tensile strength and excellent resistance to high temperatures. Similar to any other thermoplastic, HPPA can be fully recycled by re-melting.
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Based on the end-use application, the market for high-performance polyamides can be divided into automotive and defense accessories. Automotive applications include fuel and coolant lines, pump wear rings, motor bobbin parts, water heater manifold fuel modules, fuel line connectors, thermostat housing, air coolers, and coolant pumps. Based on the end product application, the HPPA market can be segmented into Nomex and Kevlar fibers. Nomex honeycomb is a lightweight, non-metallic, and strong fiber that offers excellent heat resiliency, low density, and high strength-to-weight ratio.
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Key players operating in the global HPPA market are Arkema, BASF SE, DuPont, DSM, EMS, Evonik, Kuraray, Mitsui, and Solvay. DSM markets the HPPA resin under the brand name Stonyl. The resin offers replacement of metals in a variety of applications and is stable up to 250°C temperature. DuPont manufactures high-performance polyamides and sells them under the brand name Zytel HTN. Zytel HTN series is manufactured by its own, proprietary SHIELD technology and it retains good strength even after being exposed to 180°C temperature. DuPont is strategizing to provide high-performance polyamide resins for use in oil and gas refining units. This would be aimed at replacing the centrifugal pump metal parts by plastics to make them more efficient and reliable.
