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Air purifying membrane and preparation method thereof

An air purification and sodium chloride technology, applied in the field of air purification, can solve problems affecting performance and service life, achieve long-term negative ion release function, improve filtration efficiency, and stabilize filter materials

Inactive Publication Date: 2019-03-08
NANJING LI HANG IND INST OF BIONIC TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance and service life of the purification membrane in the prior art will be affected due to moisture absorption

Method used

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  • Air purifying membrane and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The air purification film comprises the following raw materials in parts by weight: 35 parts of sodium chloride, 25 parts of polytetrafluoroethylene, 60 parts of zinc naphthenate, 15 parts of manganese oxide, 70 parts of graphite powder, 170 parts of chlorinated polyethylene, hard 60 parts of calcium fatty acid, 45 parts of methyl vinyl phenyl silicone rubber, 6 parts of polyethylene wax and 79 parts of water.

[0018] The preparation method of the air purification membrane comprises the following steps: adding sodium chloride, polytetrafluoroethylene, and zinc naphthenate into water, and stirring evenly; adding manganese oxide, graphite powder, chlorinated polyethylene, calcium stearate, methyl Vinyl phenyl silicone rubber and polyethylene wax, after mixing, filter out the solution; make the filter residue into a melt, extrude, the extrusion temperature is 140-180 ℃, blow molding into a film, the screw speed is 115r / min.

Embodiment 2

[0020] The air purification membrane comprises the following raw materials in parts by weight: 30 parts of sodium chloride, 20 parts of polytetrafluoroethylene, 40 parts of zinc naphthenate, 10 parts of manganese oxide, 60 parts of graphite powder, 160 parts of chlorinated polyethylene, hard 40 parts of calcium fatty acid, 40 parts of methyl vinyl phenyl silicone rubber, 3 parts of polyethylene wax and 78 parts of water.

[0021] The preparation method of the air purification membrane comprises the following steps: adding sodium chloride, polytetrafluoroethylene, and zinc naphthenate into water, and stirring evenly; adding manganese oxide, graphite powder, chlorinated polyethylene, calcium stearate, methyl Vinyl phenyl silicone rubber and polyethylene wax, after mixing, filter out the solution; make the filter residue into a melt, extrude, the extrusion temperature is 140-180 ℃, blow molding into a film, the screw speed is 120r / min.

Embodiment 3

[0023] The air purification film comprises the following raw materials in parts by weight: 40 parts of sodium chloride, 30 parts of polytetrafluoroethylene, 80 parts of zinc naphthenate, 20 parts of manganese oxide, 90 parts of graphite powder, 180 parts of chlorinated polyethylene, hard 80 parts of calcium fatty acid, 50 parts of methyl vinyl phenyl silicone rubber, 8 parts of polyethylene wax and 80 parts of water.

[0024] The preparation method of the air purification membrane comprises the following steps: adding sodium chloride, polytetrafluoroethylene, and zinc naphthenate into water, and stirring evenly; adding manganese oxide, graphite powder, chlorinated polyethylene, calcium stearate, methyl Vinyl phenyl silicone rubber and polyethylene wax, after mixing, filter out the solution; make the filter residue into a melt, extrude, the extrusion temperature is 140-180 ℃, blow molding into a film, the screw speed is 100r / min.

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Abstract

The invention discloses an air purifying membrane and a preparation method thereof and belongs to the field of air purification. The preparation method of the air purifying membrane comprises the following steps of uniformly mixing sodium chloride, polytetrafluoroethylene and zinc naphthenate in water; uniformly mixing in manganese oxide, graphite powder, chlorinated polyethylene, calcium stearate, methyl vinyl phenyl silicone rubber and polyethylene wax, and then filtering out solution; melting the filter residues, and then performing extrusion and blown film molding. The preparation method of the air purifying membrane has the advantages that the polytetrafluoroethylene can improve the filtering efficiency of the air purifying membrane on particles of 0.02-10 mu m to achieve good hydrophobicity; the manganese oxide achieves a long-acting anion release function, therefore, filter materials can be stable and effectively purify air.

Description

technical field [0001] The invention belongs to the field of air purification, and in particular relates to an air purification membrane and a preparation method thereof. Background technique [0002] The air purification membrane is made of polytetrafluoroethylene, which is expanded, calendered, and biaxially stretched to form a microporous film. [0003] The Chinese patent application with the application number 201610900381.8 discloses an air purification membrane and its application. The air purification membrane is thermoformed by mixing raw materials at 100-200°C and 1-3 MPa. The raw materials include the following components in parts by mass: 40-50 parts of thermosetting or thermoplastic resin, 3-7 parts of curing agent, 3-5 parts of dispersing agent, 1-3 parts of silicon oxide, 1-2 parts of aluminum oxide, 2 parts of processed shell powder ~ 3 servings. The air purification membrane described in the invention has the advantages of energy saving, cleanness, easy pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/30B01D46/54B01D53/22B01D67/00B01D69/02
CPCB01D46/543B01D53/228B01D67/0079B01D69/02B01D71/30
Inventor 陆格珠
Owner NANJING LI HANG IND INST OF BIONIC TECH LTD
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