Aircraft component comprising flame retardant compositions and methods of manufacture

摘要

An aircraft component wherein the component is a partition or a light cover, and wherein the aircraft component is molded or formed from a thermoplastic polymer composition including: a siloxane-containing copolymer in an amount effective to provide a total of 0.2 to 6.5 wt % of siloxane units based on the total weight of the polymers in the thermoplastic polymer composition, a bromine-containing polymer in an amount effective to provide 9 to 13 wt % of bromine, based on the total weight of the polymers in the thermoplastic polymer composition, and optionally a third polymer, wherein the wt % of the siloxane-containing copolymer, the bromine-containing polymer, and the optional third polymer, sum to 100 wt %, and 0.05 to 10 wt % of a light diffuser additive, based on the total weight of polymers in the thermoplastic polymer composition.

主权项

1. An aircraft component wherein the component is a partition or a light cover, and wherein the aircraft component is molded or formed from a thermoplastic polymer composition comprising:
a siloxane-containing copolymer in an amount effective to provide a total of 0.2 to 6.5 wt % of siloxane units based on the total weight of the polymers in the thermoplastic polymer composition, a bromine-containing polymer in an amount effective to provide 9 to 13 wt % of bromine, based on the total weight of the polymers in the thermoplastic polymer composition, and optionally a third polymer comprising carbonate units, imide units, etherimide units, arylene ether sulfone units, arylene ether units, or a combination thereof, wherein the wt % of the siloxane-containing copolymer, the bromine-containing polymer, and the optional third polymer, sum to 100 wt %, and 0.05 to 10 wt % of a light diffuser additive, based on the total weight of polymers in the thermoplastic polymer composition; wherein the thermoplastic polymer composition is free of copolymers comprising carbonate units and ester units; and wherein a molded or formed sample of the thermoplastic polymer composition has a transmission of 20% to 90% or a haze of 70% to 99.9%, each measured using the color space CIE1931 (Illuminant C and a 2° observer) at a thickness of 3.2 mm, 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 Federal Aviation Regulation FAR 25.853 (d), and an E662 smoke test Dmax value of less than 200 when measured at a thickness of 1.6 mm.