Light-weight, high stiffness glass laminate structure

• US 10,279,567 B2
• Filed: 08/28/2014
• Issued: 05/07/2019
• Est. Priority Date: 08/30/2013
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Jain, Anurag, Laurin, Michael M., Maas, Christianus Johannes Jacobus, McDonald, Michael Aaron, Moore, Michael John, Wood, Charlie W
• Primary Examiner(s): Loney, Donald J
• Application Number:
  US14/471,830
• Publication Number:
  US 20150064374A1
• Time in Patent Office: 1,713 Days
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10091 thermally hardened
• CPC Class Codes: B32B 17/10119 having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
• CPC Class Codes: B32B 17/10137 Chemical strengthening
• CPC Class Codes: B32B 17/10678 comprising UV absorbers or stabilizers, e.g. antioxidants
• CPC Class Codes: B32B 17/10752 containing polycarbonate
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: B32B 17/10779 containing polyester
• CPC Class Codes: B32B 17/10788 containing ethylene vinylacetate
• CPC Class Codes: B32B 17/10798 containing silicone
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 2383/00 Polysiloxanes
• CPC Class Codes: B32B 37/18 involving the assembly of discrete sheets or panels only
• CPC Class Codes: E06B 3/66 Units comprising two or more parallel glass or like panes permanently secured together reforming and uniting glass sheets by fusing C03B23/00; joining glass to glass or to other materials C03C27/00; laminated glass B32B17/10
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 428/24868 Translucent outer layer
• CPC Class Codes: Y10T 428/24926 : including ceramic, glass, porcelain or quartz layer
• CPC Class Codes: Y10T 428/2495 : Thickness [relative or absolute]
• CPC Class Codes: Y10T 428/24967 : Absolute thicknesses specified
• CPC Class Codes: Y10T 428/31507 : Of polycarbonate
• CPC Class Codes: Y10T 428/31663 : As siloxane, silicone or silane

Abstract

A laminate structure having a first chemically strengthened glass layer, a second chemically strengthened glass layer, and a polymer interlayer structure intermediate the first and second glass layers. The polymer interlayer structure can include a first polymeric layer adjacent to the first glass layer, a second polymeric layer adjacent to the second glass layer, and a polymeric rigid core intermediate the first and second polymeric layers.

Claims

1. A laminate structure comprising:

a first glass layer;

a second glass layer; and

a polymer interlayer structure intermediate the first and second glass layers,

wherein the polymer interlayer structure is comprised of

a first polymeric layer adjacent to the first glass layer,

a second polymeric layer adjacent to the second glass layer, and

a polymeric core intermediate the first and second polymeric layers, the polymeric core comprising one or more of a polysiloxane, a polyester, a polycarbonate, a copolymer comprising one or more of the foregoing and combinations thereof, and

wherein the first glass layer is comprised of a strengthened glass;

wherein the thicknesses of the first and second glass layers are different;

wherein the thickness of the first glass layer does not exceed 1.0 mm; and

wherein the first glass layer has a surface compressive stress of between about 400 MPa and about 900 MPa with a depth of layer of compressive stress of about 30 microns or more.

2. The laminate structure of claim 1 wherein the strengthened glass of the first glass layer is chemically strengthened glass or thermally strengthened glass.

3. The laminate structure of claim 1 wherein the second glass layer is comprised of strengthened glass and wherein the strengthened glass of the second glass layer is chemically strengthened glass or thermally strengthened glass.

4. The laminate structure of claim 1 wherein one or more surfaces of the first and second glass layers are chemically etched.

5. The laminate structure of claim 1 wherein the thickness of the second glass layer is selected from the group consisting of a thickness not exceeding 1.5 mm, a thickness not exceeding 1.0 mm, a thickness not exceeding 0.7 mm, a thickness not exceeding 0.5 mm, a thickness within a range from about 0.1 mm to about 1.0 mm, a thickness from about 0.5 mm to about 1.0 mm, and a thickness from about 0.5 mm to about 0.7 mm.

6. The laminate structure of claim 1 wherein the thicknesses of the first and second polymeric layers are selected from the group consisting of a thickness ranging from about 0.1 mm to about 0.8 mm, a thickness from about 0.1 mm to about 0.5 mm, and a thickness from about 0.1 mm to about 0.3 mm.

7. The laminate structure of claim 1 wherein the thickness of the core is selected from the group consisting of a thickness ranging from about 2.0 mm to about 10.0 mm, a thickness from about 2.0 mm to about 8.0 mm, a thickness from 2.0 mm to about 5.0 mm, and a thickness from about 2.0 mm to about 3.8 mm.

8. The laminate structure of claim 1 wherein the composition of the first and second glass layers are different or the composition of the first and second polymeric layers are different or both.

9. The laminate structure of claim 1 wherein the second glass layer has a surface compressive stress of between about 400 MPa and about 900 MPa and a depth of layer of compressive stress of about 30 microns or more.

10. The laminate structure of claim 1 wherein the thickness of the core is a function of the thickness of the first glass layer, the thickness of the second glass layer, or both the thicknesses of the first and second glass layers.

11. The laminate structure of claim 1, wherein the core comprises a polysiloxane copolymer comprising:

a.) a polysiloxane unit of the formula;

12. The laminate structure of claim 1, wherein the core comprises a polysiloxane-polycarbonate copolymer derived from at least one dihydroxy aromatic containing polycarbonate unit, and at least one polysiloxane bisphenol of formula (1), formula (2), or a combination thereof

13. The laminate structure of claim 1, wherein the core comprises a first polymer comprising a polyetherimide-polysiloxane copolymer comprising (a) a repeating polyetherimide unit, and (b) a polysiloxane block unit, the polysiloxane block unit having the formula: