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Environment-friendly type vacuum heat insulation plate

A vacuum heat insulation board and diaphragm technology, which is applied in the direction of heat insulation protection of pipelines, heat preservation, pipeline protection, etc., can solve the problems of less attention to heat insulation boards, poor heat preservation performance, and reduced vacuum degree, so as to improve the heat preservation effect, Ease of press molding and prevention of vacuum drop

Active Publication Date: 2017-11-24
高彦峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing patents, little attention has been paid to this point in terms of the design of the insulation board
CN105058541A ​​discloses a cork powder-based porous composite material and its preparation method and application, which belong to the field of heat insulation materials, using cork powder and fumed silica as the main raw materials, including the following steps to select certain cork powder with different particle sizes, and pass The microwave pretreatment method reforms the structure of the cork powder and mixes it with fumed silica to obtain a composite powder. The cork powder-based porous composite material can be obtained by applying a pressure of one ton for a certain period of time and one minute, but its disadvantage is that the core material used is two Silica airgel, since 99% of the material is composed of gas, will collapse with prolonged use, the volume will decrease significantly, and the thermal insulation performance will deteriorate
CN105757400A discloses a glass fiber-based vacuum insulation panel, the core material of which is mainly selected from a chopped strand core material (a laminate of chopped strand sheets formed by a wet process), or a dry process glass fiber The felt core material is a kind of glass fiber felt, or ultra-fine glass fiber cotton sheets are arranged on the upper and lower sides of the core material containing wet-formed chopped strand sheet and dry-process glass fiber felt, but its disadvantage is that the ultra-fine glass fiber There is still the possibility that some fiberglass sheets will puncture the vacuum bag and reduce the vacuum degree.

Method used

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  • Environment-friendly type vacuum heat insulation plate
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  • Environment-friendly type vacuum heat insulation plate

Examples

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preparation example Construction

[0027] As an example of the preparation method of an environment-friendly vacuum insulation panel, it includes: weighing glass fiber, diatomite and attapulgite in a certain proportion, first taking glass fiber as the central material, and wrapping diatomite and attapulgite in a Lay in the form of glass fiber, bond glass fiber, diatomaceous earth and attapulgite with the help of adhesives, press (pressing pressure can be 20-80MPa) to form a block material, as a heat-insulating core material (core material); Put the core material into a fiber filter bag with a porosity greater than 80% and a pore size of about 0.1-50 μm, and seal it; put the fiber filter bag with the core material into a reflective gas-barrier diaphragm bag coated with aluminum on the surface, vacuumize and The encapsulation results in a vacuum insulation panel. At this time, the overall vacuum degree inside the vacuum insulation panel is lower than 0.3MPa.

[0028] The invention adopts the composite core plate...

Embodiment 1

[0031] An environment-friendly vacuum insulation panel and its preparation method:

[0032] First mix 58wt% glass fiber with 20wt% diatomite and 20wt% attapulgite to ensure that diatomite and attapulgite are laid on the outside of the glass fiber;

[0033] Adding a binding agent (epoxy resin) accounting for 2wt% of the total mass in the above-mentioned raw materials will bind the raw materials together;

[0034] Press the bonded raw materials into a block with a thickness of 30mm under the condition of 50MPa, wherein the thickness of the glass fiber insulation layer is 20mm, and the mixture of diatomite and attapulgite distributed on both sides of the glass fiber insulation layer The thickness of the layer is 10mm;

[0035] Put the compressed block into a fiber filter bag (porosity greater than 80%, pore size is 0.1-50 μm), and then put the block into a reflective gas-barrier diaphragm bag (the surface of the reflective gas-barrier diaphragm bag has an aluminum film, The thi...

Embodiment 2

[0041] An environment-friendly vacuum insulation panel and its preparation method:

[0042] First mix 78wt% glass fiber with 10wt% diatomite and 10wt% attapulgite to ensure that diatomite and attapulgite are laid on the outside of the glass fiber;

[0043] Adding a binding agent (epoxy resin) accounting for 2wt% of the total mass in the above-mentioned raw materials will bind the raw materials together;

[0044] Press the bonded raw materials into a block with a thickness of 30mm under the condition of 50MPa, wherein the thickness of the glass fiber insulation layer is 20mm, and the mixture of diatomite and attapulgite distributed on both sides of the glass fiber insulation layer The thickness of the layer is 10mm;

[0045] Put the compressed block into a fiber filter bag (porosity greater than 80%, pore size 0.1-50 μm), and then put the block into a reflective gas-barrier diaphragm bag (the surface of the reflective gas-barrier diaphragm bag is covered with aluminum film , ...

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Abstract

The invention relates to an environment-friendly type vacuum heat insulation plate. The environment-friendly type vacuum heat insulation plate comprises a heat insulation core material located on the inner side, a reflecting type air insulation membrane located on the outer side and a protecting layer located between the heat insulation core material and the reflecting type air insulation membrane. The heat insulation core material comprises 40-95wt% of glass fibers, 2-40wt% of kieselguhr, 2-40wt% of attapulgite and 1-5wt% of a binding agent. By adoption of the composite core plate prepared from the kieselguhr, the attapulgite and the glass fibers, the problem that a packaging bag is damaged and consequently the vacuum degree is decreased can be solved, the technical process can be simplified, and the production cost of the core material is reduced.

Description

technical field [0001] The invention relates to an environment-friendly vacuum heat insulation board and a manufacturing method thereof, belonging to the field of heat insulation materials. Background technique [0002] Vacuum thermal insulation (VIP) is a kind of vacuum insulation material, which is composed of filling core material and vacuum protection surface layer. Because of its thermal insulation performance far surpassing the traditional polyurethane material, it has been widely used in Aerospace, home appliances and construction industries. On the one hand, vacuum insulation panels can effectively avoid heat transfer caused by air convection, and on the other hand, the core material with extremely low thermal conductivity prevents heat conduction to a large extent, so the thermal conductivity of VIP panels can be improved. Significantly reduced, less than 0.035w / (m·k). [0003] At present, most of the core materials of vacuum insulation panels sold on the market a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02B32B17/02B32B9/04B32B27/12B32B27/32B32B3/24B32B33/00
CPCB32B3/266B32B5/02B32B9/047B32B27/12B32B27/32B32B33/00B32B2250/40B32B2255/10B32B2255/205B32B2262/101B32B2270/00B32B2307/304F16L59/029
Inventor 高彦峰卢健危韦赵起
Owner 高彦峰
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