Glass fiber fabric-resin composition laminate

Patent metadata

Field	Value
Publication number	US-10029443-B2
Application number	US-201414916362-A
Country	US
Kind code	B2
Filing date	Oct 16, 2014
Priority date	Nov 29, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

Provided is a glass fiber fabric-resin composition laminate which is thinner than the conventional glass fiber fabric-resin composition laminates and has a strength equal to or higher than that of the conventional laminates. In the glass fiber fabric-resin composition laminate 1, one or more layers of first glass fiber fabrics 2 to 5 have a total thickness of 50 to 100% with respect to the overall thickness. The glass composition of the first glass fiber fabrics 2 to 5 is 57 to 70 mass % of SiO2, 18 to 30 mass % of Al2O3, 5 to 15 mass % of MgO, 0 to 12 mass % of CaO, 0 to 1 mass % of at least one of Li2O, Na2O, and K2O, 0 to 1 mass % of TiO2, and 0 to 1 mass % of B2O3.

First claim

The invention claimed is:

1. A glass fiber fabric-resin composition laminate comprising a plurality of glass fiber fabrics laminated via a resin composition, wherein
the plurality of glass fiber fabrics comprises one or more layers of a first glass fiber fabric and one or more layers of a second glass fiber fabric,
the one or more layers of the first glass fiber fabric has a total thickness in a range from 60 to 93% with respect to a total thickness of the plurality of glass fiber fabrics, and
a glass composition of the first glass fiber fabric has, based on a total mass, an SiO 2 content of 57 to 70 mass %, an Al 2 O 3 content of 18 to 30 mass %, an MgO content of 5 to 15 mass %, a CaO content of 0 to 12 mass %, a content of at least one of Li 2 O, Na 2 O, and K 2 O of 0.01 to 1 mass %, a TiO 2 content of 0 to 1 mass %, and a B 2 O 3 content of 0 to 1 mass %,
wherein a glass composition of the second glass fiber fabric has, based on the total mass, an SiO 2 content of 52 to 56 mass %, an Al 2 O 3 content of 12 to 16 mass %, a total content of CaO and MgO of 20 to 25 mass %, and a B 2 O 3 content of 5 to 10 mass %; and
the laminate has a tensile strength of greater than 465 Mpa and an elastic modulus of 20 GPa or greater.

2. The glass fiber fabric-resin composition laminate according to claim 1 ,
wherein the glass fiber fabric of each layer has a thickness in a range from 30 to 150 μm.

3. The glass fiber fabric-resin composition laminate according to claim 1 ,
wherein an outermost layer glass fiber fabric has a thickness in a range from 30 to 100 μm.

4. The glass fiber fabric-resin composition laminate according to claim 1 ,
wherein other glass fiber fabrics with the same composition and the same thickness are respectively provided on both front and back sides of a glass fiber fabric of a center layer so as to be plane-symmetrical with respect to a plane equally dividing the glass fiber fabric of the center layer in a thickness direction as a symmetric plane.

5. The glass fiber fabric-resin composition laminate according to claim 1 , having a tensile strength of 488 MPa or more, and an elastic modulus of 21 GPa or more.

6. The glass fiber fabric-resin composition laminate according to claim 1 , wherein a total thickness of the glass fiber fabrics is from 150 to 450 μm.

7. The glass fiber fabric-resin composition laminate according to claim 1 , wherein an outermost layer glass fiber fabric has a thickness from 30 to 70 μm.

8. The glass fiber fabric-resin composition laminate according to claim 1 , wherein the one or more layers of the first glass fiber fabric has a total thickness of from 70 to 93% with respect to the total thickness of the plurality of glass fiber fabrics.

9. The glass fiber fabric-resin composition laminate composition of claim 1 wherein the laminate has a tensile strength of between 488 Mpa and 632 Mpa, and an elastic modulus of from 21 to 23 GPa at an overall thickness of from 260 to 300 μm.

Assignees

• Nitto Boseki Co Ltd

Inventors

• Sakuma Dai
• Sato Noriyoshi
• Tashiro Toshihiro

Classifications

• B32B2307/732

  Dimensional properties · CPC title

• B32B2250/42

  Alternating layers, e.g. ABAB(C), AABBAABB(C) · CPC title

• B32B5/26 Primary

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

• B32B27/12

  next to a fibrous or filamentary layer · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title