| 摘要 |
Interior aircraft components comprise a thermoplastic composition comprising: a first polymer comprising bisphenol A carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol A carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing polymers; and an organophosphorus compound; wherein a sample of the thermoplastic composition has: an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, an E662 smoke test DsMax value of less than 200, a flame time of less than 15 seconds, a burn length of less than 6 inches, and a drip extinguishing time of less than 5 seconds, an energy in multiaxial impact of 100 J or more and a ductility in multiaxial impact of 100%. |
| 主权项 |
1. An aircraft component,
wherein the aircraft component is a molded, formed or extruded component, comprising a thermoplastic composition comprising, based on the total weight of the composition: 2.5 to 10 wt. % of an organophosphorus compound; and 90 to 97.5 wt. % of a first polymer comprising bisphenol A carbonate units and monoaryl arylate units, or a second polymer comprising bisphenol A carbonate units, monoaryl arylate units, and siloxane units, or a combination comprising at least one of the foregoing polymers; and optionally, up to 5 wt. % of an additive composition comprising an additive selected from a processing aid, a heat stabilizer, an ultra violet light absorber, a colorant, or a combination comprising at least one of the foregoing; wherein the bisphenol A carbonate units are of the formula the monoaryl arylate units are of the formula wherein each Rh is independently a halogen atom, a C1-10 hydrocarbyl and n is 0 to 4; and the siloxane units are of the formula or a combination comprising at least one of the foregoing, wherein E has an average value of 2 to 200; wherein a sample of the thermoplastic composition has
an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, each measured using the method of FAR F25.4, in accordance with FAR 25.853 (d) at a thickness of 1.5 mm or 3 mm,an E662 smoke test DsMax value of less than 200 when measured at a thickness of 1.5 mm or 3 mm,a flame time of less than 15 seconds, a burn length of less than 6 inches, and a drip extinguishing time of less than 5 seconds, each measured using the method of FAR F25.5, in accordance with FAR 25.853(a) at a thickness of 1.5 mm or 3 mm, andan energy in multiaxial impact of 100 J or more and a ductility in multiaxial impact of 100%, measured at +23° C. at an impact speed of 4.4 m/second in accordance with ISO 6603 on 3.2 mm thick discs. |
