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Polyimide blend compact dehumidification film and preparation method thereof

A technology of polyimide and blends, which is applied in the field of air conditioning and can solve problems such as poor water absorption and insufficient mechanical strength

Inactive Publication Date: 2017-05-10
彭州市运达知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing organic polymer membranes still have the problems of poor water absorption and insufficient mechanical strength.

Method used

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  • Polyimide blend compact dehumidification film and preparation method thereof

Examples

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Effect test

specific Embodiment 1

[0024] Specific example 1: Mix the monomeric raw materials 6-amino-1-naphthalenesulfonic acid and 1,5-dihydroxynaphthalene at a molar ratio of 1:0.7, add an initiator, and generate a preform with a relative molecular weight of less than 40,000 at a temperature of 50°C. polymer; secondly, the prepolymer produced is desolvated, dried, mixed with polyimide at a weight ratio of 10:100, dissolved, and film-formed on a glass plate; finally, the solvent is removed and dried to obtain a 0.03mm Polymer film.

specific Embodiment 2

[0025] Specific Example 2: Mix the monomeric raw materials 8-naphthylamine-1-sulfonic acid and 2,3-dihydroxynaphthalene in a molar ratio of 1: 1.5, add an initiator, and generate a preform having a relative molecular weight of less than 40,000 at a temperature of 80°C. polymer; secondly, the prepolymer produced is desolvated, dried, mixed with polyimide at a weight ratio of 100:100, dissolved, and film-formed on a glass plate; finally, the solvent is removed and dried to obtain a 0.10mm Polymer film.

specific Embodiment 3

[0026] Specific example 3: Mix the monomer raw material 7-amino-1,3-naphthalene disulfonic acid and 1,4-dihydroxynaphthalene at a molar ratio of 1:1, add an initiator, and generate a relative molecular weight less than 40000 prepolymer; secondly, the prepolymer produced is desolventized, dried, mixed with polyimide at a weight ratio of 60:100, dissolved, and film-formed on a glass plate; finally, the solvent is removed and dried to obtain 0.07mm polymer film.

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Abstract

The invention discloses a polyimide blend compact dehumidification film and a preparation method thereof, belongs to the field of air conditioners and aims to improve water absorption performance, the mechanical property and the like of an air conditioner dehumidification film. The polyimide blend compact dehumidification film contains polyimide and a hydrophilic group-containing polymer prepolymer. The relative molecular weight of the prepolymer is less than 50,000.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to dehumidification membranes for air conditioners. Background technique [0002] Dehumidification is a problem often encountered in industrial production and people's daily life. Commonly used dehumidification methods are: cooling dehumidification, liquid absorbent dehumidification, fixed adsorbent dehumidification, membrane dehumidification. [0003] Membrane dehumidification, as a new dehumidification method, has many advantages that traditional dehumidification methods do not have, such as continuous dehumidification process, no corrosion problems, no need for valve switching, no moving parts, high system reliability, easy maintenance, and energy saving. Low power consumption and low maintenance costs. For organic enhanced moisture transfer, the pressure difference on both sides of the membrane should be increased as much as possible. The specific system scheme can adopt compr...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08L71/00C08G65/40C08J5/18
CPCC08L79/08C08G65/40C08J5/18C08J2379/08C08J2471/00C08L2203/16
Inventor 韩瑞琪
Owner 彭州市运达知识产权服务有限公司
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