Vacuum thermal insulation material and core material

A vacuum insulation material and core material technology, which is applied in heat exchange equipment, pipeline protection through heat insulation, heat preservation, etc., can solve unsolved core material and other problems, achieve easy control of the amount of glue added, reduce operation difficulty, and ensure smoothness Effect

Inactive Publication Date: 2016-11-16
SUZHOU V I P NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the vacuum insulation material does not solve how to pr...

Method used

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  • Vacuum thermal insulation material and core material
  • Vacuum thermal insulation material and core material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The core material 1 is glass fiber, and the core material 1 is heated and pressurized at a constant temperature by the press 3 and the high-temperature box 2, and the pressure is along the thickness direction of the glass wool felt, wherein the pressure is 0.7-0.9 atmospheres, and the heating and pressing time is 12min. The heating temperature is set at 0°C-18°C above the thermoplastic deformation temperature of the core material, preferably the thermoplastic deformation temperature of the core material is 500°C, and the heating temperature is 518°C. After the core material is heated and pressed, the fibers on the surface undergo plastic deformation, accompanied by fiber breakage and pulverization. The core material is sequentially cut, dried, and packaged under reduced pressure, and the surface flatness deviation of the prepared vacuum heat insulation material is 2 mm.

Embodiment 2

[0027] The core material 1 is glass fiber, and the core material 1 is heated and pressurized at a constant temperature by the press 3 and the high-temperature box 2, and the pressure is along the thickness direction of the glass wool felt, wherein the pressure is 0.2-0.5 atmospheres, and the heating and pressing time is 10min. The heating temperature is set at 50°C-80°C above the thermoplastic deformation temperature of the core material, preferably the thermoplastic deformation temperature of the core material is 500°C, and the heating temperature is 580°C. Fracture and pulverization occur. The core material is sequentially cut, dried, and packaged under reduced pressure, and the surface flatness deviation of the prepared vacuum heat insulation material is 2 mm.

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Abstract

The invention relates to preparation of a vacuum thermal insulation material and a core material. The vacuum thermal insulation material comprises the core material. Pressure is applied in the direction perpendicular to the thickness of the core material, and meanwhile constant-temperature heating treatment is performed. The heating temperature is set to be 0-150 DEG C higher than a core material thermoplastic deformation temperature, the applied pressure is no more than one barometric pressure, and time is 1-25min. The core material refers to glass fibers or any combination of the glass fibers with one or two of ceramic fibers, asbestos fibers and basalt fibers. The preparation process is high in operability, and the vacuum thermal insulation material is good in strength, excellent in thermal insulation property and applicable to various fields of building external wall insulation, space shuttle skin insulation or cold storage, refrigeration and the like.

Description

technical field [0001] The invention relates to a core material of a vacuum heat insulation material, in particular to a vacuum heat insulation material. Background technique [0002] A vacuum insulation material is a material obtained by inserting an inner core material into a gas-barrier outer packaging film, decompressing and sealing the inside. Common internal core materials include glass wool, glass fiber, silica fiber, alumina fiber, asbestos and other materials. After decompression and sealing processes, the air rate of the internal core material is reduced, and the internal air circulation is almost non-existent, which is better. It can maintain the heat preservation and heat insulation performance of the material. [0003] Vacuum insulation materials have been widely used in electromechanical, petroleum, chemical, construction and aerospace fields due to their high-efficiency thermal insulation and heat insulation. [0004] Japanese patent JP2005 / 019496A discloses...

Claims

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Application Information

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IPC IPC(8): F16L59/065
CPCF16L59/065
Inventor 徐滕州周介明陈照峰周燕清祝坤
Owner SUZHOU V I P NEW MATERIAL
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