Method for preparing vacuum insulated panel core materials by using glass fiber aggregation leftover material and vacuum insulated panel

A vacuum insulation panel and glass fiber technology, which is applied in mechanical equipment, heat exchange equipment, and pipelines through thermal insulation protection, etc., can solve problems such as unfavorable production and use, and achieve lower material costs, lower production costs, and small expansion rates. Effect

Inactive Publication Date: 2017-11-17
四川迈科隆真空新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has special requirements for the folding method and use method of VIP, which is not conducive to product production and use.

Method used

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  • Method for preparing vacuum insulated panel core materials by using glass fiber aggregation leftover material and vacuum insulated panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Preparation of insulation board core material by using glass fiber aggregate scrap

[0025] (1) choosing fiber diameter is 3.5 μ m, and average length is the leftover material of centrifugal glass wool fiber aggregate of 5 mm;

[0026] (2) Utilize the fiber cutting machine to cut and disperse the fiber aggregates;

[0027] (3) Pave the cut and dispersed fibers into the mold through the distributor;

[0028] (4) Heat the laid glass fibers to 600°C and press them into shape under a pressure of 0.5MPa.

[0029] After rapid cooling, a dry-process glass fiber core material with good mechanical strength and no rebound is obtained.

[0030] Fabrication of vacuum insulation panels

[0031] (1) Make a three-side sealed gas barrier bag, the structure of the gas barrier film is:

[0032] PET12 / vmPET12 / vmPET12 / LDPE50, where PET12 refers to a polyethylene terephthalate film with a thickness of 12 μm, and vmPET12 refers to a polyethylene terephthalate film with a thickn...

Embodiment 2

[0035] Example 2 Preparation of insulation board core material by using glass fiber aggregate scrap

[0036] (1) choosing fiber diameter is 2 μ m, and average length is the leftover material of centrifugal glass wool fiber aggregate of 6 mm;

[0037] (2) Utilize the fiber cutting machine to cut and disperse the fiber aggregates;

[0038] (3) Pave the cut and dispersed fibers into the mold through the distributor;

[0039] (4) Heat the laid glass fibers to 630°C and press them into shape under a pressure of 1.0MPa.

[0040] After rapid cooling, a dry-process glass fiber core material with good mechanical strength and no rebound is obtained.

[0041] Fabrication of vacuum insulation panels

[0042](1) Make a three-side sealed gas barrier bag, the structure of the gas barrier film is:

[0043] PET12 / vmPET12 / vmPET12 / LDPE50, where PET12 refers to a polyethylene terephthalate film with a thickness of 12 μm, and vmPET12 refers to a polyethylene terephthalate film with a thickness...

Embodiment 3

[0046] Example 3 Making a comparison sample of a common wet-process glass fiber core material VIP

[0047] (1) Make a three-side sealed gas barrier bag. The structure of the barrier film is NY12 / vmPET12 / Al6 / LDPE50, where NY12 refers to nylon with a thickness of 12 μm, and vmPET12 refers to the evaporation of metal aluminum on the surface with a thickness of 12 μm. Polyethylene terephthalate film, Al6 refers to aluminum foil with a thickness of 6 μm, and LDPE50 refers to low-density polyethylene with a thickness of 50 μm.

[0048] (2) Bake the wet core material at 200°C for 2 hours;

[0049] (3) Take out the baked core material, and install a commonly used calcium oxide desiccant inside, then quickly put it into a gas barrier bag, place it in a vacuum chamber to evacuate, and heat seal the mouth when the vacuum degree reaches 0.01Pa, and It is vented into the atmosphere, and the wet-process glass fiber core material VIP is obtained.

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Abstract

The invention discloses a method for preparing vacuum insulated panel core materials by utilizing glass fiber aggregation leftover materials. The method for preparing the vacuum insulated panel core materials by utilizing the glass fiber aggregation leftover materials comprises the following steps that the insulated panel core materials are obtained by cutting, dispersing, distributing, heating and pressing forming the glass fiber aggregation leftover materials; the heating temperature is 500-630 DEG C, the pressing pressure is 0.2-1.0 MPa, the density of insulated panel core materials is 260-320 kg/m<3>, the prepared core materials are good in mechanical strength and small in expansion rate. The invention further discloses a vacuum insulated panel prepared by utilizing the insulated panel core materials. According to the vacuum insulated panel, the initial center thermal conductivity coefficient of the vacuum insulated panel is lower than 2.5mW/m.K, the overall effective thermal conductivity coefficient is lower to below 3.5 mW/m.K, the service life is over 15 years, and manufacturing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of reuse of leftovers of glass fiber materials, and in particular relates to a method for preparing a core material of a vacuum insulation board by using the leftovers of glass fiber aggregates and the vacuum insulation board. Background technique [0002] Vacuum insulation panel (VIP) is a new type of high-efficiency insulation material based on the principle of vacuum insulation panels, which is made by inhibiting gas heat conduction and reducing solid and radiant heat conduction. The center thermal conductivity is generally lower than 4mW / m.k. VIP is made by filling the porous core material in a gas barrier film bag and vacuum sealing. You can add a getter to the core material to absorb the residual gas in the board, maintain a good vacuum state in the board, and prolong the service life of VIP. [0003] At present, glass fiber is mostly used as VIP core material, and its manufacturing process mainly includes wet p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/065
CPCF16L59/065
Inventor 黄奉康
Owner 四川迈科隆真空新材料有限公司
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