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Diathermanous and moisture permeable composite film and preparation method thereof

A composite film and moisture-permeable technology, which is applied in the field of heat-permeable and moisture-permeable composite film and its preparation, can solve the problems of stable performance and difficult service life, reduced product market competitiveness, difficult processing and use, etc., to achieve heat transfer High moisture permeability, simple manufacturing process, and reduced cost

Active Publication Date: 2011-05-18
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, my country is also gradually developing such air heat exchangers, but most of the high-grade paper cores still need to be imported from Japan and other countries, which greatly increases the cost of the product and reduces the market competitiveness of the product.
In addition, the use of paper cores has many deficiencies in antibacterial, weather resistance, flame retardant performance and moisture absorption control, and it is difficult to control the stable performance and service life of the product. At the same time, the paper is easy to slip during production and use, and it is not easy to process and use.

Method used

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  • Diathermanous and moisture permeable composite film and preparation method thereof
  • Diathermanous and moisture permeable composite film and preparation method thereof
  • Diathermanous and moisture permeable composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The heat-permeable and moisture-permeable composite film is composed of polyvinyl chloride and sodium-based montmorillonite, in which the sodium-based montmorillonite is dispersed in polyvinyl chloride as crystal phase powder to form a multi-phase solid film; polyvinyl chloride and sodium-based The mass ratio of montmorillonite is 3:7.

[0026] The preparation method of the above-mentioned composite film is as follows: 3 g of industrial polyvinyl chloride powder is dissolved in 150 mL of tetrahydrofuran organic solvent, and sodium-based montmorillonite is added to the obtained clear liquid, and the mass ratio of polyvinyl chloride powder to sodium-based montmorillonite is 3 : 7; oscillate ultrasonically for 20 minutes to make a suspension, cast on a glass plate, and dry to form a self-hanging film; keep it in a blast drying oven at 40°C for half an hour and then peel off the film, the film thickness is 20 μm to 100 μm, The film is soft and can be folded at any angle wit...

Embodiment 2

[0031] The heat-permeable and moisture-permeable composite film is composed of polyvinyl chloride and sodium-based montmorillonite, in which the sodium-based montmorillonite is dispersed in polyvinyl chloride as crystal phase powder to form a multi-phase solid film; polyvinyl chloride and sodium-based The mass ratio of montmorillonite is 4:6.

[0032] The preparation method of the above-mentioned composite film is: take 4g of industrial polyvinyl chloride powder and dissolve it in 150mL of tetrahydrofuran organic solvent, add sodium-based montmorillonite to the obtained clear liquid, and the mass ratio of polyvinyl chloride powder to sodium-based montmorillonite is 4 : 6; oscillate ultrasonically for 20 minutes to make a suspension, cast it on a glass plate, and dry it to form a self-suspending film; keep it in a blast drying oven at 40°C for half an hour and then peel off the film. The film thickness is 20 μm to 100 μm. The film is soft and can be folded at any angle without ...

Embodiment 3

[0037] The heat-permeable and moisture-permeable composite film is composed of polyvinyl chloride and sodium-based montmorillonite, in which the sodium-based montmorillonite is dispersed in polyvinyl chloride as crystal phase powder to form a multi-phase solid film; polyvinyl chloride and sodium-based The mass ratio of montmorillonite is 5:5.

[0038] The preparation method of the above-mentioned composite film is as follows: 5 g of industrial polyvinyl chloride powder is dissolved in 150 mL of tetrahydrofuran organic solvent, and sodium-based montmorillonite is added to the obtained clear liquid, and the mass ratio of polyvinyl chloride powder to sodium-based montmorillonite is 5 : 5; oscillate ultrasonically for 20 minutes to make a suspension, cast on a glass plate, and dry to form a self-suspending film; keep it in a blast drying oven at 40°C for half an hour and then peel off the film, the film thickness is 20 μm to 100 μm, The film is soft and can be folded at any angle ...

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Abstract

The invention discloses a composite fast ion conductive film which has diathermanous and moisture permeable performance and is used as a diathermanous and moisture permeable composite film. The composite fast ion conductive film comprises high polymer, silicate and additive, wherein the silicate is dispersed in the high polymer in a crystalline phase particle to form a multiphase solid film; the high polymer has solubility or fusibility, the silicate has lamellar or porous structure; and according to the weight percentage, the content of the high polymer is 10%-80%, the content of the silicate is 10%-90% and the content of the additive is 0%-30%. Compared with the prior art, the diathermanous and moisture permeable composite film, the fast ion conductive film has low cost, simple process, good heat conduction and moisture penetrability, and good application prospect in the air heat exchanger field.

Description

technical field [0001] The invention relates to the technical field of polymer films, in particular to a heat-permeable and moisture-permeable composite film and a preparation method thereof, which are applied to air heat exchangers, ion exchange membranes, seawater desalination electrodialysis membranes, and special functional paper for recording characters, etc. . Background technique [0002] With the improvement of living standards, people's living space is more and more affected by modern civilization. For example, many buildings are equipped with air conditioners, and the indoors are closed and not ventilated for a long time. If the room is closed and not ventilated for a long time, the air will become dirty. Therefore, it is necessary to continuously exchange air with the outside to introduce fresh air from the outside into the room. There is energy loss of cold air or hot air in the process of air exchange, and reducing energy loss as much as possible is of great si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L29/04C08L27/12C08L23/28C08L27/06C08L23/30C08K13/02C08K3/34C08J5/18
Inventor 薛立新陈景刘秉鑫李娟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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