Dry fibrous material for subsequent resin infusion

Patent metadata

Field	Value
Publication number	US-10369773-B2
Application number	US-201715818259-A
Country	US
Kind code	B2
Filing date	Nov 20, 2017
Priority date	Dec 20, 2011
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

Disclosed herein is a dry, self-supporting fibrous material, the fibers of which have been treated with a binder composition. The fibrous material can be slit into tapes or tows that are suitable for use in an Automated Tape Laying (ATL) or Automated Fiber Placement (AFP) process. This fibrous material is suitable for forming preforms which are configured to receive a matrix resin by resin infusion in the manufacturing of structural composite parts.

First claim

What is claimed is:

1. A fibrous tape having a width of 24 inches or less, comprising:
a ply of structural fibers laminated to a nonwoven veil comprising randomly-arranged carbon fibers;
a first binder composition distributed onto the structural fibers and the nonwoven veil, said binder composition comprising (i) one or more polymers selected from polyhydroxyethers, polyurethanes, a mixture thereof, a copolymer or a reaction product of polyhydroxyether and polyurethane, and (ii) a methoxyalkyl melamine aminoplast cross-linker,
wherein the ply of structural fibers comprises unidirectional carbon fibers, and the fibrous tape is permeable to liquid resin.

2. The fibrous tape of claim 1 , wherein the ply of structural fibers is not bonded to another layer other than the nonwoven veil.

3. The fibrous tape of claim 2 , further comprising a second epoxy-based binder, which comprises one or more multifunctional epoxy resins and a thermoplastic polymer.

4. The fibrous tape of claim 1 , wherein said tape has a width of 1.5 inches or less.

5. A method comprising laying up a plurality of the fibrous tape of claim 1 in an automated process to form a preform that is permeable to a liquid resin.

Assignees

• Cytec Ind Inc
• Cytec Engineered Mat Inc

Inventors

• Ponsolle Dominique
• Restuccia Carmelo Luca
• Jacobs William
• Blackburn Robert
• Lofaro Carmelo
• Price Richard
• Doyle Marc
• Smith Mitchell
• Abusafieh Abdel

Classifications

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B2371/00

  Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone · CPC title

• B32B2038/045

  Slitting · CPC title

• B29C2793/0081

  before shaping · CPC title

• C08G18/4879

  containing aromatic groups · CPC title