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Durable clear coatings for aircraft cabin windows

An aircraft and coating technology, applied in the direction of coating, metal material coating process, layered products, etc., can solve problems such as limited durability, and achieve the effect of improving weather resistance and cracking

Active Publication Date: 2012-02-22
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Sol-gel coatings provide high light transmission but exhibit limited durability against abrasion and UV-induced degradation

Method used

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  • Durable clear coatings for aircraft cabin windows
  • Durable clear coatings for aircraft cabin windows
  • Durable clear coatings for aircraft cabin windows

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Embodiment Construction

[0023] Such as figure 2 As shown, the two-layer coating 200 of the present invention includes a combination of a first coating 202 and a second coating 204 deposited on a substrate 206 (eg, acrylic substrate 206). In one embodiment, the acrylic substrate 206 may be a common aircraft cabin window 100 .

[0024] In one embodiment, second coating 204 is deposited on acrylic substrate 206 using a plasma-based chemical vapor deposition (CVD) coating process. Plasma CVD coatings are relatively "hard" coatings that offer better wear resistance, chemical inertness, etc. than other coatings produced by wet chemical methods such as sol-gel coatings. The ion bombardment effect that occurs during plasma CVD of silicon-based clear coatings has been shown to improve the hardness and durability of the coatings. Ion bombardment during deposition tends to increase the surface mobility of the deposit and thereby improve the optical quality in terms of haze and clarity of the coating.

[002...

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Abstract

A duplex coating scheme and associated method of formation, which includes a siloxane based soft coating and a plasma based SiOxCy hard coating used in combination to improve the durability of acrylic substrates used in aircraft window applications.

Description

Background technique [0001] The present invention relates to protective coatings for stretched acrylic windows, and more particularly, the present invention relates to protective coatings that maintain optical quality and reduce cracking of windows in service. [0002] Aircraft cabin windows are commonly made from stretched acrylic (ie, acrylic substrates) due to their light weight, flexibility, and formability. However, acrylics are susceptible to erosion and cracking caused by particles such as sand and water. Also, in flight, aircraft windows are subjected to pressure differentials created by pressure differentials inside and outside the aircraft. This pressure differential causes the window to buckle, which can cause much of the coating to crack, allowing the chemicals to attack the acrylic substrate and in some cases cause the coating to peel from the acrylic substrate. [0003] Windows are also subjected to a variety of chemicals, such as cleaning agents and other chem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04B05D7/24B32B27/08C08J7/043C08J7/046
CPCB05D1/62C08J2483/00C23C16/0272C08J2333/06B05D7/54B05D7/04C08J7/047C23C16/401Y10T428/265Y10T428/24942Y10T428/31935Y10T428/31663Y10T428/31855Y10T428/31504C08J7/043C08J7/046C08J7/042B05D7/02B05D3/007C08J2333/04C08J2483/04C08J7/0427
Inventor 克雷格·E·科克瓦森·S·森达拉姆沃伦·W·瓦希尔
Owner THE BOEING CO
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