COMPOSITE MATERIAL AND ELECTRONIC APPARATUS

• US 20160167340A1
• Filed: 10/16/2015
• Published: 06/16/2016
• Est. Priority Date: 12/15/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: NAKAMURA, TAICHI, SAKATANI, SHIGEAKI
• Granted Patent: US 9,707,737 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 2250/04 4 layers
• CPC Class Codes: B32B 2250/44 Number of layers variable across the laminate
• CPC Class Codes: B32B 2260/021 Fibrous or filamentary layer layers of natural mineral fibres or particles being impregnated in a plastic substance B32B19/02
• CPC Class Codes: B32B 2260/04 Impregnation, embedding, or binder material
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres vinyl or acrylic copolymers B32B2262/0223 or B32B2262/0246
• CPC Class Codes: B32B 2262/0269 Aromatic polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/0284 Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2262/108 Rockwool fibres
• CPC Class Codes: B32B 2307/102 Insulating
• CPC Class Codes: B32B 2307/202 Conductive
• CPC Class Codes: B32B 2307/302 Conductive
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/281 comprising polyimides
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 5/022 : Non-woven fabric
• CPC Class Codes: B32B 5/142 : Variation across the area of the layer
• CPC Class Codes: B32B 5/22 : characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed layer formed of natural mineral fibres or particles next to a foam layer B32B19/047, next to a layer made of particles B32B19/048, or next to a fibrous or filamentary layer B32B19/06; paper layer or cardboard layer next to a paper layer or cardboard layer B32B29/005, next to a foam layer B32B29/007, next to a fibrous or filamentary layer B32B29/02, or next to a particulate layer B32B29/04
• CPC Class Codes: B32B 7/05 : the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14
• CPC Class Codes: B32B 9/007 : comprising carbon, e.g. graphite, composite carbon
• CPC Class Codes: B32B 9/04 : comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/06; layered products with at least two ceramic layers composed mainly of ceramic B32B18/00
• CPC Class Codes: B32B 9/045 : of synthetic resin
• CPC Class Codes: B32B 9/047 : made of fibres or filaments
• CPC Class Codes: G06F 1/203 : for portable computers, e.g. for laptops

Abstract

A composite material includes: a heat dissipation sheet; a heat insulation material that is placed on one surface of the heat dissipation sheet; and a support layer that is placed on at least one of the other surface of the heat dissipation sheet and the other surface of the heat insulation material, wherein silica aerogel is included between fibers in an inner region of the heat insulation material, an outer peripheral region of the heat insulation material includes the fibers, and the heat dissipation sheet and the heat insulation material are fixed onto each other through the fibers. Furthermore, provided is an electronic apparatus, including a heat generating component; and the above composite material, wherein the composite material is placed between the housing and the heat generating component.

Claims

1. A composite material, comprising:

a heat dissipation sheet;

a heat insulation material that is placed on one surface of the heat dissipation sheet; and

a support layer that is placed on at least one of the other surface of the heat dissipation sheet and the other surface of the heat insulation material, wherein

silica aerogel is included between fibers in an inner region of the neat insulation material,

an outer peripheral region of the heat insulation material includes the fibers, and

the heat dissipation sheet and the heat insulation material are fixed onto each other through the fibers.

2. The composite material according to claim 1, wherein the heat insulation material has an area larger than that of the heat dissipation sheet, a existence region of the silica aerogel has the same area as that of the heat dissipation sheet, and the fibers in the outer peripheral portion and the support layer are fixed onto each other through fusion bonding.

3. The composite material according to claim 1, wherein the silica aerogel is not present in the outer peripheral region of the heat insulation material.

4. The composite material according to claim 1, wherein a bonding member is not present between the heat dissipation sheet and the heat insulation material.

5. The composite material according to claim 1, wherein the fibers are placed in an entire region of the heat insulation material.

6. The composite material according to claim 1, wherein support layers are present on both of one surface of the heat dissipation sheet and one surface of the heat insulation material, and the support layers are each fixed onto the fibers in the outer peripheral region through fusion bonding.

7. The composite material according to claim 1, wherein the heat dissipation sheet is a graphite sheet, the graphite sheet has a thickness of 100 μ

m or less, a heat conductivity in the planar direction of 1000 W/m·

K or more, and a neat conductivity in the thickness direction of 20 W/m·

K or less, and the heat insulation material has a thickness within a range of 0.05 man to 1 mm, and a heat conductivity within a range of 0.01 to 0.1 w/m·

K.

8. An electronic apparatus, comprising:

a housing;

a heat generating component; and

the composite material according to claim 1, wherein

the composite material is placed between the housing and the heat generating component.