Fiber reinforced plastic and its reinforcement

• US 4,983,433 A
• Filed: 12/26/1989
• Issued: 01/08/1991
• Est. Priority Date: 12/26/1988
• Status: Expired due to Fees

• Current Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Original Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Inventors: Shirasaki, Yoshikazu
• Primary Examiner(s): Bell, James J.
• Application Number:
  US07/457,156
• Time in Patent Office: 378 Days
• Field of Search: 428/245, 428/253, 428/254, 428/257, 428/258, 428/259, 428/297, 428/298, 428/413, 428/408, 428/36.1, 428/36.5
• US Class Current: 428/36.1
• CPC Class Codes: B32B 2260/021 Fibrous or filamentary layer
• CPC Class Codes: B32B 2260/046 Synthetic resin
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres
• CPC Class Codes: B32B 2305/08 Reinforcements
• CPC Class Codes: B32B 2363/00 Epoxy resins
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/38 comprising epoxy resins
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 27/42 comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: B32B 5/08 the fibres or filaments of a layer being of different substances , e.g. conjugate fibres, mixture of different fibres
• CPC Class Codes: C08J 5/047 with mixed fibrous material
• CPC Class Codes: D03D 15/00 Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
• CPC Class Codes: D03D 15/275 Carbon fibres
• CPC Class Codes: D03D 15/283 synthetic polymer-based, e.g. polyamide or polyester fibres cellulose-based artificial fibres D03D15/225
• CPC Class Codes: D03D 15/573 Tensile strength
• CPC Class Codes: D10B 2321/021 polyethylene
• CPC Class Codes: D10B 2331/021 aromatic polyamides, e.g. aramides
• CPC Class Codes: D10B 2505/02 Reinforcing materials; Prepregs
• CPC Class Codes: Y10T 428/1362 Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
• CPC Class Codes: Y10T 428/1376 : Foam or porous material containing
• CPC Class Codes: Y10T 428/30 : Self-sustaining carbon mass or layer with impregnant or other layer
• CPC Class Codes: Y10T 428/31511 : Of epoxy ether
• CPC Class Codes: Y10T 442/3236 : Including inorganic strand material
• CPC Class Codes: Y10T 442/3813 : Coating or impregnation contains synthetic polymeric material

Abstract

A reinforcement for a fiber reinforced plastic which is a mixed-woven or knitted fabric of two kinds of filaments is disclosed. One kind of filament thereof is an ultra high molecular weight polyethylene filament having tensile strength of not less than 20 g/denier and tensile modulus of not less than 500 g/denier and the ultra high molecular weight polyethylene filament material occupies 60 to 90% of the total surface area of said fabric. The filament other than the ultra high molecular weight polyethylene filament occupies 60 to 90% of the total back surface area of the fabric. There is also disclosed a fiber reinforced plastic comprising a first reinforced resin layer reinforced with the above reinforcement and a matrix resin, and a second reinforced resin layer reinforced with an inorganic fiber and a matrix resin, the first reinforced resin layer being laminated on at least one surface of the second reinforced resin layer in such a manner that the back surface of the first reinforced resin layer faces to the second reinforced resin layer.

Claims

1. A fiber reinforced plastic comprising:

(1) a first reinforced resin layer reinforced with a reinforcement, which comprises a mixed-woven or knitted fabric of two kinds of filmaments, one kind of filament thereof being an ultra high molecular weight polyethylene filament having tensile strength of not less than 20 g/denier and tensile modulus of not less than 500 g/denier, the ultra high molecular weight polyethylene filament material occupying 60 to 90% of the total surface area of said fabric, and the other filament being an inorganic fiber occupying 60 to 90% of the total back surface area of said fabric, and a matrix resin, and

(2) a second reinforced resin layer reinforced with an inorganic fiber and a matrix resin,

said first reinforced resin layer being laminated on at least one surface of said second reinforced resin layer in such a manner that the back surface of said first reinforced resin layer faces to said second reinforced resin layer.

2. The fiber reinforced plastic according to claim 1, wherein the matrix resin is a rein which can be set at not more than 145°

C. or set by removal of a solvent.

3. The fiber reinforced plastic according to claim 1, wherein the matrix is selected from the group consisting of polyether polyurethane, polyester polyurethane, aliphatic hydrocarbon polymer, aliphatic hydrocarbon copolymer, unsaturated polyester resins, vinyl ester resins, epoxy resins, phenol resins and urethane acrylate resins.

4. The fiber reinforced plastic according to claim 1, wherein the matrix resin is epoxy resin.

5. The fiber reinforced plastic according to claim 1 which has a cylindrical cross section.

6. The fiber reinforced plastic according to claim 1, wherein the inorganic fiber of the first reinforced resin layer is carbon fiber or glass fiber.

7. The fiber reinforced plastic according to claim 6, wherein the inorganic fiber of the second reinforced resin layer is carbon fiber.