Micro-pore filtering membrane producing technology

The technology of a microporous filtration membrane and preparation process is applied in the field of environmental protection material preparation, which can solve the problem of not using a microporous filtration membrane, and achieve the effects of low cost, smooth breathing and wide source of raw materials

Inactive Publication Date: 2015-12-09
胡志刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no microporous filtration membrane made of polyurethane

Method used

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  • Micro-pore filtering membrane producing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1. A porous sponge with a thickness of 5 mm is thermally compressed with a high temperature resistant plate at a temperature of 150° C., and the thermal compression pressure is , and compressed into a microporous filter membrane with a thickness of about 1.2 mm.

Embodiment 2

[0019] Embodiment 2. A porous sponge with a thickness of 10 mm is thermally compressed with a high temperature resistant plate at a temperature of 170° C., and the thermal compression pressure is , and compressed into a microporous filter membrane with a thickness of about 2 mm.

Embodiment 3

[0020] Embodiment 3. A porous sponge with a thickness of 10 mm is thermally compressed with a high temperature resistant plate at a temperature of 150° C., and the thermal compression pressure is , and compressed into a microporous filter membrane with a thickness of about 2.5 mm.

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Abstract

The invention provides a micro-pore filtering membrane producing technology including the steps of: with polyurethane sponge being uniform in pore size in the prior art, performing thermal-compression to the polyurethane sponge with a high-temperature-resistant board at 150-220 DEG C to form the filtering membrane being 0.5-10 mm in thickness and less than 10 [mu]m in pore size. The producing technology is easy to control, is low in cost, is smoothly breathable and can be cleaned for being recycled. The filtering membrane can be used in an air purifier and such filtering products.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental protection materials, and in particular relates to a preparation process of a microporous filtration membrane. Background technique [0002] At present, the filter membrane for filtering PM2.5 is mainly made of polytetrafluoroethylene film through mechanical stretching, and tiny cavities are formed between the molecules, so as to achieve the purpose of filtration. However, due to the expensive polytetrafluoroethylene material, the cost is very high. For example, in PM2.5 masks, only the nostrils have filter membranes, and other parts are not breathable, resulting in poor breathing. At the same time, the filter membrane is easy to clog. Most of the standard PM2.5 masks on the market are plug-in, and the filter needs to be replaced after a period of use. [0003] The porous sponge represented by polyurethane sponge is currently used in many fields. It has uniform pores, long li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/54B01D67/00B01D53/22
Inventor 胡志刚
Owner 胡志刚
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