TECANYL® VH2 Plate

TECANYL® VH2 is a flame-retardant modified polyphenylene ether developed for transport interiors. It is rated UL94 V-0 and passes FAR 25.853 Appendix F, and it burns with genuinely low smoke: specific optical density by ASTM E662 is 11 to 13 at 1.5 minutes and 20 to 40 at 4.0 minutes. Glow wire ignitability is 775°C at 1.0 and 2.0 mm and 800°C at 3.0 mm. Mechanically it yields at 9,280 psi with tensile modulus of 322,000 psi, flexural modulus 342,000 psi and notched Izod impact of 5.6 ft-lb/in at 73°F. Heat deflection temperature is 252°F at 264 psi.

It is used for machined aircraft and rotorcraft interior parts - galley components, lavatory hardware, flight deck and cabin trim, brackets, ducting parts, seat and stowage fittings - and the same properties carry into rail and transit interiors and into electrical insulation where a flame rating is required. Low moisture absorption and excellent dimensional stability mean machined panels hold tolerance, and the material resists water, salt solutions, acids and bases, machines cleanly with standard tooling and bonds and welds well. Limitations: aromatic and chlorinated solvents, ketones and esters attack it; it is not UV stable outdoors; and material-level test data does not substitute for part-level airworthiness qualification.