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Vacuum heat insulation plate and preparation method thereof

A technology of vacuum insulation panels and vacuum units, which is applied to heat exchange equipment, mechanical equipment, and pipelines protected by heat insulation, and can solve problems such as complex preparation methods, poor heat preservation and fire prevention, and air leakage, and achieve simple and easy-to-operate preparation methods , good thermal insulation performance

Active Publication Date: 2013-05-08
山东华德隆建材科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing thermal insulation systems for external walls mainly use organic boards such as polystyrene boards, extruded styrene boards, polyurethane rigid foam boards, and phenolic boards, and inorganic materials such as rock wool, foamed cement, and foamed glass. These systems exist Certain defects, such as poor thermal insulation for fire protection, poor fire protection for thermal insulation
At present, a vacuum insulation panel technology has been applied. This technology is mainly composed of a gas barrier film, a support material, and a getter. Defects such as poor durability of the degree, its application is limited
During the production and long-term use of the gas barrier film, there will be a small amount of water permeability and air leakage. At this time, the traditional core material will slowly expand and affect the heat preservation effect. Therefore, a getter must be added, but after adding the getter The effect is still not good
An infrared reflective layer needs to be set on the surface of the filling material, the purpose of which is to block the way of heat radiation and heat dissipation from the inside, so as to make it better in heat insulation performance, the preparation method is complex, costly, time-consuming and laborious

Method used

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  • Vacuum heat insulation plate and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] A vacuum insulation panel, comprising a high-barrier film bag and an insulating core material 1 wrapped therein, the insulating core material 1 comprising basalt fiber, the fiber diameter of the basalt fiber is 8-9 μm, the length is 90-100 mm, and the water content is 1%, the content of sizing agent is 0.2%, and the use temperature is between -260~650℃. The high barrier film bag is an aluminum foil fiber composite vacuum heat insulation bag 2 with a thickness of 3 μm.

[0027] The preparation method of the vacuum insulation panel includes the following steps:

[0028] (1) Select the basalt fiber of the above specification;

[0029] (2) Compress the basalt fiber on a press machine, the compressive strength is 200kPa, the thickness of the thermal insulation core material 1 after pressing is 10mm, and the bulk density is 50kg / m 2 ;

[0030] (3) Use a vacuum dryer to dry, the drying temperature is 220 ° C, the vacuum degree is 1000 Pa, and lasts for 10 minutes;

[0031]...

Embodiment 2

[0034] A vacuum insulation panel, comprising a high-barrier film bag and an insulating core material 1 wrapped therein, the insulating core material 1 comprising basalt fibers, the fiber diameter of the basalt fibers is 7-8 μm, the length is 70-80 mm, and the water content is 0.9%, the sizing content is 0.1%, and the use temperature is between -260~650℃. The thermal insulation core material 1 is a basalt fiber felt made of the basalt fiber, with a thickness of 30mm and a bulk density of 20kg / m 2 . The high barrier film bag is an aluminum foil fiber composite vacuum heat insulation bag 2 with a thickness of 12 μm.

[0035] The preparation method of the vacuum insulation panel includes the following steps:

[0036] (1) Select the basalt fiber felt of the above size and specification, and cut it appropriately if necessary;

[0037] (2) Compress the cut basalt fiber felt on a press machine, the compressive strength is 250kPa, the thickness of the thermal insulation core materia...

Embodiment 3

[0042] A vacuum insulation panel, comprising a high-barrier film bag and an insulating core material 1 wrapped therein, the insulating core material 1 comprising basalt fibers, the fiber diameter of the basalt fibers is 5-6 μm, the length is 55-75 mm, and the water content is 0.5%, the sizing content is 0.15%, and the use temperature is between -260~650℃. The thermal insulation core material 1 is a basalt fiber board made of the basalt fiber, with a thickness of 20 mm and a bulk density of 15 kg / m 2 . The high barrier film bag is an aluminum foil fiber composite vacuum heat insulation bag 2 with a thickness of 10 μm.

[0043] The preparation method of the vacuum insulation panel includes the following steps:

[0044] (1) Select the basalt fiberboard of the above size and specification, and cut it appropriately if necessary;

[0045] (2) Press the cut basalt fiber board on a press machine, the compressive strength is 220kPa, the thickness of the thermal insulation core mater...

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Abstract

The invention discloses a vacuum heat insulation plate for building outer walls, the vacuum heat insulation plate comprises a high resistance thin film bag and heat preservation core materials wrapped in the high resistance thin film bag, and the heat preservation core materials comprise basalt fibers. The vacuum heat insulation plate has the advantages of being simple in structure, low in cost, energy-saving and environmental, secure, fireproof, and good in heat preservation property. The invention further discloses a preparation method of the vacuum heat insulation plate. The preparation method of the vacuum heat insulation plate comprises: (1) preparing materials, (2) compression molding, (3) drying, and (4) packaging. The problems of bag swelling, air leakage, core material degradation, and durability of vacuum degree of a traditional vacuum heat insulation plate are solved, meanwhile the defects of using silicon dioxide and other powdery materials and difficult composite filling plating of the silicon dioxide and other powdery materials and fibers are overcome. The preparation method is simple and easy to operate, and saves both time and labor.

Description

technical field [0001] The invention relates to a thermal insulation board, in particular to a vacuum thermal insulation board used for building exterior walls and a preparation method thereof. Background technique [0002] Existing external wall insulation systems mainly use polystyrene boards, extruded styrene boards, polyurethane rigid foam boards, phenolic boards and other organic boards and inorganic materials such as rock wool, foamed cement, and foamed glass. These systems exist Certain deficiencies, such as poor thermal insulation for fire protection, and poor fire protection for thermal insulation. At present, a vacuum insulation panel technology has been applied. This technology is mainly composed of a gas barrier film, a support material, and a getter. The disadvantages such as poor durability of the degree limit its application. During the production and long-term use of the gas barrier film, there will be a small amount of water permeability and air leakage. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/065F16L59/02F16L59/08
Inventor 王希安
Owner 山东华德隆建材科技有限公司
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