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Vacuum insulated panel and production method thereof

A vacuum insulation board and core board technology, which is applied in heat exchange equipment, other household appliances, and pipelines through heat insulation protection, can solve the problems of small vacuum space of heat insulation boards, high cost of heat insulation boards, and high heat conduction of core materials, so as to avoid The effect of knock loss air leakage, good thermal insulation performance, and excellent thermal insulation performance

Active Publication Date: 2022-04-12
安徽吉曜玻璃微纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing vacuum insulation panels are composed of filling core material and vacuum protection surface layer, which can effectively avoid the heat transfer caused by air convection and thus have a good heat insulation effect; usually aluminum foil bags are used as the surface protection layer, due to the thickness of the aluminum foil If the insulation board is too thin, it is easy to damage and leak air during the transfer or installation process, making the installation and construction of the insulation board difficult; the filling core material is usually glass fiber, insulation cotton, etc. The vacuum space of this type of insulation board is small, and the core material conducts heat High, poor thermal insulation effect, also use airgel as the core material, the cost of this kind of thermal insulation board is too high, it is difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment prepares a kind of glue-coated aluminum foil bag, and the specific implementation process is as follows:

[0032] Step A1: Unwind the aluminum foil with a thickness of 0.1mm, scrub the aluminum foil from a sodium carbonate alkali washing pool at a temperature of 45°C, remove the industrial oil during the forming process of the aluminum foil, take the phosphating solution HWJ-038, add volume Sulfuric acid with a fraction of 30% adjusts the pH value of the phosphating solution to 5, and then puts the degreased aluminum foil into the phosphating solution for 30 minutes to form a phosphating layer on the surface of the aluminum foil to improve surface performance and adhesion , to obtain aluminum phosphide foil;

[0033] Step A2: Take the liquid butyl rubber phosphating solution HWJ-038 and vulcanizing agent (SP1055) in the rubber mixer, and control the addition of AC vulcanizing agent in the liquid butyl rubber phosphating solution HWJ-038 to 12g / kg, Raise...

Embodiment 2

[0036] This embodiment prepares a kind of glue-coated aluminum foil bag, and the specific implementation process is as follows:

[0037] Step A1: Unwind the aluminum foil with a thickness of 0.15mm, scrub the aluminum foil from a sodium carbonate alkali washing pool at a temperature of 45°C, remove the industrial oil during the forming process of the aluminum foil, take the phosphating solution HWJ-038, add volume Sulfuric acid with a fraction of 30% adjusts the pH value of the phosphating solution to 5, and then puts the degreased aluminum foil into the phosphating solution for 30 minutes to form a phosphating layer on the surface of the aluminum foil to improve surface performance and adhesion , to obtain aluminum phosphide foil;

[0038] Step A2: Take liquid butyl rubber phosphating solution HWJ-038 and vulcanizing agent (SP1055) in the rubber mixer, control the addition of AC vulcanizing agent in liquid butyl rubber phosphating solution HWJ-038 to 20g / kg, Raise the temper...

Embodiment 3

[0041] In this embodiment, a heat-insulating core board is prepared, and the specific implementation process is as follows:

[0042] Step B1: Take glass fiber (provided by Anhui Jiyao Glass Microfiber Co., Ltd., the fiber diameter is 3-5 μm, and the length is 2-3 mm) and soak it in an ethanol solution with a volume fraction of 18% for 5 hours, and then add a silane coupling agent KH550 is heated to 42±2°C and soaked for 24 hours, then suction filtered and dried to constant weight to obtain coupled glass fibers;

[0043] Step B2: Weigh 4.8kg of BASF1170A polyurethane, 370g of AC foaming agent, 1.3kg of coupled glass fiber prepared in step B1, 1.5kg of bentonite micropowder (with a particle size of 0.1±0.03mm) and 1.8kg of water;

[0044] Step B3: Add all kinds of raw materials except water into the mixer, set the rotation speed to 240rmp and mix for 10 minutes, then add water and keep the rotation speed and continue to mix and mix for 30 minutes to obtain the batch material. a...

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Abstract

The invention relates to a vacuum insulated panel and a production method thereof, and belongs to the technical field of thermal insulation materials. The vacuum heat insulation plate is composed of a glue-coated aluminum foil bag and an internal heat insulation core plate, aluminum foil used for packaging is subjected to phosphating treatment and then is coated with butyl rubber in a roller coating mode, buffering is provided through the toughness of the butyl rubber, collision damage and air leakage are avoided, the butyl rubber has good air tightness, the internal vacuum environment can still be kept even if the aluminum foil is damaged, and good heat insulation performance is maintained; an expansion area is formed in the heat insulation core plate by utilizing the water absorption expansibility of bentonite, polyurethane continues to foam between the surface layers of the expanded bentonite to form a porous structure, the bentonite evaporates, loses water and shrinks, adjacent foaming holes are communicated through shrinkage holes to form an interconnected net-shaped structure, glass fibers and the bentonite are coupled to improve the structural strength, and the heat insulation performance of the heat insulation core plate is improved. After vacuumizing, the pore structure can still be relatively completely kept, so that a vacuum interval with a certain thickness exists in the heat insulation plate, and the heat insulation plate has excellent heat insulation performance.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a vacuum insulation panel and a production method thereof. Background technique [0002] Vacuum insulation panel is a new type of thermal insulation material with excellent thermal insulation performance. Its application in the fields of construction, refrigerators and cold chain transportation can greatly reduce the energy consumption problem caused by poor thermal insulation performance of thermal insulation materials. [0003] Most of the existing vacuum insulation panels are composed of filling core material and vacuum protection surface layer, which can effectively avoid the heat transfer caused by air convection and thus have a good heat insulation effect; usually aluminum foil bags are used as the surface protection layer, due to the thickness of the aluminum foil If the insulation board is too thin, it is easy to damage and leak air during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02F16L59/065F16L59/08B29C35/02B29C44/02B29C44/34B29C44/38B29L7/00
CPCY02A30/242Y02B80/10
Inventor 顾春生曾庆江张长龙
Owner 安徽吉曜玻璃微纤有限公司
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