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Washable heat exchange membrane, core with washable heat exchange membrane and preparation method for washable heat exchange membrane

A technology of heat exchange membrane and core, which is applied in the field of preparation of washable heat recovery membrane and core, which can solve the problems of non-cleanable, easy to mold, non-reusable, etc., and achieve the effect of cost saving and excellent heat conduction

Inactive Publication Date: 2016-09-07
宁波艾风环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the popularization of air-conditioning heat recovery fresh air system, the shortcomings of traditional heat exchange membranes are gradually exposed
Ordinary paper-based heat recovery membranes cannot effectively isolate harmful gases and germs, and are prone to mold; water-soluble polymer membranes have high moisture permeability and can effectively block harmful gases, but both are not washable and cannot be reused

Method used

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  • Washable heat exchange membrane, core with washable heat exchange membrane and preparation method for washable heat exchange membrane
  • Washable heat exchange membrane, core with washable heat exchange membrane and preparation method for washable heat exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Dissolve 10g of polyvinyl alcohol (PVA) in 90g of deionized water, heat and stir at 90°C until a transparent and homogeneous solution is formed.

[0041] (2) Mix the PVA aqueous solution in step (1) with 12.5g polydimethyldiallylpropyl ammonium chloride (PDDA) aqueous solution (20wt%), 12.5g sulfonated polyetheretherketone (SPEEK) aqueous solution (20wt%) %) at 27°C and stirred to form a homogeneous transparent solution.

[0042] (3) Cast the mixed solution in step (2) on polyester non-woven fabric, and dry naturally to form a film to obtain a PVA / PDDA / SPEEK blended film.

[0043] (4) Immerse the blended film in step (3) in 10% glutaraldehyde aqueous solution, and add a small amount of sulfuric acid, take it out after cross-linking at room temperature for 1 h, rinse with deionized water and dry to obtain cross-linked PVA / PDDA / SPEEK ion total heat exchange membrane. The heat exchange membrane has a thickness of 10-100 μm, including a support layer and a functional...

Embodiment 2

[0046] 1) Dissolve 6g of cellulose acetate (CA) in 94g of acetic acid, heat and stir at 50°C until a transparent and homogeneous solution is formed.

[0047] (2) Mix the CA acetic acid solution in step (1) with 15 g polymethacryloxyethyltrimethylammonium chloride (PTMAC) aqueous solution (20 wt %) at 27° C., and stir to form a homogeneous transparent solution.

[0048] (3) Cast the mixed solution in step (2) on a polypropylene non-woven fabric, and dry naturally to form a film to obtain a CA / PTMAC blended film.

[0049] (4) Immerse the blended membrane in step (3) in 10% maleic anhydride aqueous solution, and add a small amount of sulfuric acid, take it out after crosslinking at room temperature for 1.5h, rinse with deionized water and dry to obtain crosslinked CA / PTMAC ion total heat exchange membrane. The heat exchange membrane has a thickness of 10-100 μm, including a support layer and a functional layer with a thickness of 1-20 μm compounded on the surface of the support la...

Embodiment 3

[0052] (1) Dissolve 10g of polyacrylamide (PAM) in 90g of water, heat and stir at 30°C until a transparent and homogeneous solution is formed.

[0053] (2) Casting the PAM solution in the step (1) on the cellulose non-woven fabric, drying naturally to form a film to obtain a PAM homogeneous film.

[0054] (3) Immerse the PAM homogeneous membrane in step (2) in 5% sodium polyphosphate (SPP) aqueous solution, take it out after cross-linking at room temperature for 0.5h, rinse with deionized water and dry to obtain cross-linked PAM / SPP ion total heat exchange membrane. The heat exchange membrane has a thickness of 10-100 μm, including a support layer and a functional layer with a thickness of 1-20 μm compounded on the surface of the support layer; The mass ratio of high molecular polymer and modifier is 50-99.9:0.1-50.

[0055] The total heat exchange membrane is made into a total heat exchange core. After testing, the total heat exchange film prepared in this example has a c...

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Abstract

The invention discloses a washable heat exchange membrane, a core with the washable heat exchange membrane and a preparation method for the washable heat exchange membrane. The heat exchange membrane comprises a supporting layer and a functional layer which is compounded to the surface of the supporting layer, wherein the functional layer is prepared from a macromolecular polymer and a modifier through chemical crosslinking and grafting modification. The heat exchange membrane is applied to a heat exchange core of an air conditioner heat recovery system. The washable heat exchange membrane disclosed by the invention is subjected to modifications such as chemical crosslinking, grafting modification and blending, so that the prepared high-polymer-ion heat exchange membrane has water molecule channels and is resistant to water solubles. Compared with the prior art, the core made from the heat exchange membrane disclosed by the invention has excellent heat conduction, moisture permeability and barrier to gases such as carbon dioxide, the membrane can be washed, and the performance of the membrane is not affected after the membrane is washed, so that the membrane can be recycled, the cost is reduced, and the market competitiveness is higher.

Description

technical field [0001] The technical field of heat recovery parts of the fresh air system of the present invention relates to a washable heat exchange membrane core, in particular to a preparation method of a washable heat recovery membrane and the core. Background technique [0002] Today, with the full implementation of the sustainable development strategy, my country has taken energy conservation and emission reduction as an important national policy. The energy directly consumed by buildings in the process of construction and use is close to 1 / 3 of the total energy consumption of the society; in China, only the operating energy consumption of residential and commercial buildings can be equivalent to the comprehensive of China's cement and steel industries, and this building energy consumption About 55% of energy consumption is heating and air conditioning, which is a key factor restricting building energy conservation. With the gradual improvement of people's living sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/38B01D71/16B01D71/40B01D71/74B01D71/60B01D71/26B01D71/52B01D71/44B01D69/10B01D69/02B01D67/00B01D65/06
CPCB01D71/38B01D65/02B01D67/0002B01D69/02B01D69/10B01D71/16B01D71/26B01D71/40B01D71/44B01D71/52B01D71/60B01D71/74B01D2321/28B01D2323/12
Inventor 韩秋薛立新周青波
Owner 宁波艾风环境科技有限公司
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