A thin film barrier coating for cfrp

Patent metadata

Field	Value
Publication number	US-2016009876-A1
Application number	US-201414775902-A
Country	US
Kind code	A1
Filing date	Mar 7, 2014
Priority date	Mar 14, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

An article comprises a carbon fibre reinforced plastic (CFRP) substrate, a buffer layer disposed adjacent the substrate, the buffer layer comprising a poly(para-xylylene) polymer; and a moisture barrier coating disposed adjacent the buffer layer.

First claim

1 . An article comprising:
(i) a carbon fibre reinforced plastic (CFRP) substrate, (ii) a buffer layer disposed adjacent the substrate, and comprising a poly(para-xylylene) polymer; and (iii) a moisture barrier coating disposed adjacent the buffer layer.

2 . The article according to claim 1 , wherein the moisture barrier coating (MBC) is selected from a group of MBC's consisting of: diamond-like carbon; metal oxide; thin metal foil; and metal nitride.

3 . (canceled)

4 . The article according to claim 1 , wherein the poly(para-xylylene) polymer is represented by the formula I, as follows:—

wherein R1, R2 and R3 are independently selected from a group consisting of Hydrogen or a halogen, and wherein n is greater than 2, but typically 2500-5000.

5 . (canceled)

6 . The article according to claim 1 , wherein the poly(para-xylylene) polymer is that which is sold under the trade name Parylene®, for example Parylene N®, Parylene C®, Parylene HT® or Parylene D®.

7 . The article according to claim 1 , wherein the article comprises more than one buffer layer comprising poly(para-xylylene) polymer.

8 . The article according to claim 7 , wherein the thickness of the or each buffer layer is about 0.1-1000 μm, or about 0.5-500 μm, or about 1-100 μm, or about 5-50 μm, or about 10-30 μm.

9 . (canceled)

10 . The article according to claim 1 , wherein the article comprises [BL:MBC]n, wherein BL corresponds to the number of buffer layers (BL) and MBC corresponds to the number of moisture barrier coatings (MBC), and n is greater than 1.

11 . The article according to claim 1 , wherein the article comprises silsesquioxane, or a derivative or analogue thereof.

12 . The article according to claim 11 , wherein the silsesquioxane, or a derivative or analogue thereof is represented by a general formula (R—SiO1.5)n, wherein n is an even number, and R is hydrogen, or a hydroxyl or alkoxy group, or an optionally substituted straight or branched alkyl, alkylene, aryl or arylene group, or an organofunctional derivative of any of these latter groups.

13 . The article according to claim 11 , wherein the silsesquioxane comprises a polyhedral oligomeric silsesquioxane (POSS).

14 . The article according to claim 11 , wherein the silsesquioxane comprises aminopropylisobutyl (POSS)®, or a derivative or analogue thereof.

15 . The article according to claim 11 , wherein the silsesquioxane comprises epoxycyclohexyisobutyl (POSS), or a derivative or analogue thereof.

16 . The article according to claim 11 , wherein the CFRP resin comprises between about 0.5 and 5 wt % silsesquioxane, or a derivative or analogue thereof.

17 . (canceled)

18 . A method of manufacturing an article comprising a carbon fibre reinforced plastic (CFRP), the method comprising:—
(i) providing a CFRP substrate;
(ii) depositing a buffer layer comprising a poly(para-xylylene) polymer on the substrate; and
(iii) depositing a moisture barrier coating on the buffer layer.

19 . (canceled)

20 . An article comprising:
(i) a carbon fibre reinforced plastic (CFRP) substrate, and (ii) a moisture barrier coating disposed adjacent the substrate, wherein the coating comprises diamond-like carbon.

21 . The article according to claim 20 , wherein the article comprises a buffer layer disposed in between the substrate and the moisture-barrier coating, wherein the buffer comprises a poly(para-xylylene) polymer.

22 .- 23 . (canceled)

24 . A method of manufacturing an article comprising a carbon fibre reinforced plastic (CFRP), the method comprising:—
(i) providing a CFRP substrate; and
(ii) depositing a moisture-barrier coating comprising diamond-like carbon on the substrate.

25 .- 27 . (canceled)

28 . The article according to claim 1 comprising carbon nanotubes.

29 .- 31 . (canceled)

32 . The high performance component comprising the carbon fibre reinforced plastic (CFRP) article according to claim 1 .

33 . The component according to claim 32 , wherein the component is for use in space or aerospace industries, high-performance terrestrial transportation, or in high-precision systems, such as telescopes or high-end sports equipment.

Assignees

• Univ Surrey
• Astrium Ltd

Inventors

• Rodriguez Jose Virgilio Anguita
• Silva Ravi
• Hamerton-Ruskin Ian
• Tang Winnie
• Stute Thomas Theo

Classifications

• C08J7/0423

  with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder · CPC title

• C08J2363/00

  Characterised by the use of epoxy resins; Derivatives of epoxy resins · CPC title

• B32B2262/106

  Carbon fibres, e.g. graphite fibres · CPC title

• C08J2465/04

  Polyxylylenes · CPC title

• Y10T428/31511

  Of epoxy ether · CPC title