The Universal Selection Source: Polymer Additives


High Heat Resistant Polymers: A Lot of Candidates for a Top 10

SpecialChem / Mar 28, 2011

State-of-the-art industries as well as mass production markets, from aerospace up to automotive or electronics require more and more outstanding balances of thermal, mechanical, electrical, chemical, optical and tribological properties for high-performance parts. Some specialty polymers offer peak or long term thermal resistance exceeding 250°C, excellent mechanical strength and toughness, dimensional stability, low outgassing, resistance to hydraulic, automotive, and industrial fluids and solvents; low coefficient of thermal expansion, creep resistance, and into the bargain electrical property stability, flame retardancy, radiation resistance.

To offer smarter answers to application and processing issues, new polymer versions are based on more or less well-known specialty high heat polymers such as PBI, Polyimides and derivatives for instance melt processable TPIs or Polyamide-imides (PAI); PEEK (polyetheretherketone), Polybenzoxazole (PBO), some Liquid Crystal Polymers (LCP), Polyphenylene sulfide (PPS), alloys of PBI and PEEK or TPI and PEEK, Perfluorinated polymers (PTFE, PFA), silicones, special versions of Epoxies, Polysulfones, Polycyanates etc.

Many other chemical entities are developed for special applications such as, for example Hyflon® MFA resins, Ultrason® E Dimension and EpiSpire® HTS-2620, Araldite® benzoxazine thermoset resins, polyetheramide (PEAR) thermoset resins, Fluorinated poly(imide-ether-amide), polyquinoxalines, Phthalonitrile thermoset resins, poly(phthalazinone ether ketone), poly(phthalazinone ether sulfone), and poly(phthalazinone ether sulfone ketone), Benzocyclobutene (DVS-BCB), derivatives of bisoxazolines and formaldehyde-free phenolic novolacs, Phenolic Triazine (PT), poly-para-phenylene copolymers, polyhydroxyamides (PHA)…

These outperforming polymers are excellent replacements for metals, ceramics, and others allowing to manufacture parts as diversified as thrust washers and oil seal rings for automotive and off road vehicle transmissions, thermal insulators and stripper fingers for high-speed copiers, jet engine components, check valve balls, spline couplings, heat-resistant gears, vanes, wear strips, and valve seats, carriers for aluminium hard disks and silicon wafers, journal bearings, and bearing retains, electronics components, super fibres for bullet-proof fabrics, shields, helmets or micro-asteroid shields etc.

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