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Heat insulating sheet and manufacturing method thereof

A manufacturing method and technology of thermal insulation sheet, which can be used in heat exchange equipment, textiles and papermaking, protection of pipes through thermal insulation, etc., and can solve problems such as reduced thermal insulation performance

Active Publication Date: 2021-09-03
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the thermal insulation performance will be reduced when the silica particles are detached from the thermal insulation material during use.

Method used

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  • Heat insulating sheet and manufacturing method thereof
  • Heat insulating sheet and manufacturing method thereof
  • Heat insulating sheet and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] A base material 21 containing a nonwoven fabric of the inorganic first fibers 22 and a second nylon fiber 23 having a diameter of 0.1 mm and a length of twice or more the diameter of 1.5% by weight of the inorganic first fibers 22 and a diameter of 0.1 mm or more was prepared. . The processing steps are performed as shown in this embodiment. The thickness of the completed heat insulating sheet 27 was 4.15 mm. In addition, the thermal conductivity was 21.7 mW / m·K, and the desired heat insulating sheet 27 could be obtained.

Embodiment 2

[0079] A base material 21 containing a nonwoven fabric of the inorganic first fibers 22 and 6.4% by weight of the inorganic first fibers 22, a diameter of 0.2 mm, and a length of twice or more the diameter of nylon was prepared. The processing steps are performed as shown in this embodiment. The completed heat insulating sheet 27 is 4.09 mm. In addition, the thermal conductivity was 21.8 mW / m·K, and the desired heat insulating sheet 27 could be obtained.

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Abstract

A heat insulating sheet comprising fibers, silica airgel contained in the fibers, and fibrous cavities was used. A method for producing a heat insulating sheet comprising: an impregnating step of impregnating silica aerosol into a non-woven fabric substrate comprising fibers insoluble in an acidic solution and fibers soluble in the acidic solution; a gelation step, gelling the silica aerosol; a hydrophobization step, hydrophobizing the gel; and a drying step, drying the gel to make the fiber soluble in the acidic solution Dissolved in the hydrophobization process.

Description

technical field [0001] The present invention relates to a heat insulating sheet and a method of manufacturing the same. Background technique [0002] In recent years, information equipment is constantly developing. Therefore, the information processing capability of semiconductor elements and the like is improved, and the amount of heat generated by the semiconductor elements and the like is increasing. In order to prevent the failure of the semiconductor element or the like due to heat and the shortening of its life, a metal heat sink or a graphite sheet is used to conduct the heat of the semiconductor element or the like to the case. However, with the further development of information equipment, further measures against heat are required. [0003] In addition, in order to control the vehicle, various electronic control devices using various types of semiconductor elements are increasingly mounted on automobiles. In recent years, these electronic devices have been place...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/04C08J5/04C08J9/26D06M11/79C01B33/16
CPCC01B33/16C08J5/04C08J9/26F16L59/04D06M11/11D06M13/507D06M13/513D06M2101/06D06M2101/32D06M2101/34D06M2400/02D06M11/79B05D3/067B05D1/18B05D2518/10D06M11/07
Inventor 大城达弘鹤田崇
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD