Self-fixturing metallic composite laminate

Patent metadata

Field	Value
Publication number	US-9662811-B2
Application number	US-201514589252-A
Country	US
Kind code	B2
Filing date	Jan 5, 2015
Priority date	Jan 5, 2015
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A number of variations may include a method that may include providing a composite material that may include nano-tubes that may include pressure activated resin, forming the composite material such that the resin within the nano-tubes may begin to cure, holding the composite material in a formed state, removing the composite material from the formed state, and curing the composite material.

First claim

What is claimed is:

1. A method comprising:
providing a composite material comprising tubes comprising pressure activated resin;
forming the composite material such that the resin within the tubes begins to cure;
holding the composite material in a formed state;
removing the composite material from the formed state; and
curing the composite material.

2. The method as set forth in claim 1 , further comprising:
providing a first metallic sheet disposed over the composite material and a second metallic sheet disposed under the composite material prior to forming the composite material.

3. The method as set forth in claim 2 , wherein the forming comprises applying pressure to the first metallic sheet, second metallic sheet, and composite material such that the resin within the tubes is activated and the resin begins to cure.

4. The method as set forth in claim 2 , further comprising removing the first metallic sheet and the second metallic sheet.

5. The method as set forth in claim 1 , wherein the forming forms the composite material into a first part.

6. The method as set forth in claim 1 , wherein the forming comprises stamping.

7. The method as set forth in claim 1 , wherein the forming comprises applying a pressure or force such that the pressure activated resin is activated and curing begins.

8. The method as set forth in claim 5 , wherein the holding the composite material in a formed state comprises holding the composite material within a stamp.

9. The method as set forth in claim 1 , wherein curing the composite material comprises keeping the composite material between a first metallic sheet and a second metallic sheet and subsequently removing the first metallic sheet and the second metallic sheet.

10. A product comprising:
a part comprising a composite material comprising nano-tubes comprising pressure activated resin wherein the resin has been cured via a curing process activated by applying pressure or force to the nano-tubes comprising the pressure activated resin.

11. The product as set forth in claim 10 , further comprising: wherein the curing process comprises a first metallic sheet disposed over the composite material and a second metallic sheet disposed under the composite material.

12. The product as set forth in claim 11 , wherein applying pressure or force comprises applying pressure or force to the first metallic sheet, second metallic sheet, and composite material.

13. The product as set forth in claim 11 , wherein the curing process further comprises removing the first metallic sheet and the second metallic sheet.

14. The product as set forth in claim 10 , wherein the applying pressure or force forms the composite material into the first part.

15. The product as set forth in claim 10 , wherein the applying pressure or force comprises stamping.

16. The product as set forth in claim 10 , wherein the applying pressure or force comprises holding the composite material in a formed state within a stamp.

17. The product as set forth in claim 10 , wherein the curing process comprises keeping the composite material between a first metallic sheet and a second metallic sheet and subsequently removing the first metallic sheet and the second metallic sheet.

18. A method comprising:
providing a first layer comprising fiber composite material comprising tubes comprising a plurality of fibers arranged in a generally tubular shape and having at least two sizings temporarily capping the ends of the tubes and containing pressure activated resin, a first metallic sheet disposed over the first layer, and a second metallic sheet disposed under the first layer;
applying pressure to the first layer, the first metallic sheet, and the second metallic sheet such that the resin within the tubes is activated;
forming the first layer, the first metallic sheet, and the second metallic sheet into a first part;
holding the first layer, the first metallic sheet, and the second metallic sheet in a green state;
curing the first layer; and
removing the first metallic sheet and the second metallic sheet from the first layer.

19. The method as set forth in claim 18 wherein the tubes are nano-tubes.

20. The method as set forth in claim 1 wherein the tubes are nano-tubes.

21. The method as set forth in claim 20 wherein the pressure activated resin comprises an epoxy resin having at least two parts.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Ezzat Hesham A
• Polewarczyk Joseph M
• Shah Bhavesh

Classifications

• B32B2307/748

  Releasability · CPC title

• B29K2105/24

  crosslinked or vulcanised · CPC title

• B32B15/14

  next to a fibrous or filamentary layer · CPC title

• B32B3/26

  characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer} · CPC title

• B29K2105/12

  of short lengths, e.g. chopped filaments, staple fibres or bristles · CPC title