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Processing technology for preparing lithium battery diaphragm membrane through air compressing device by pilot test

A lithium battery separator and processing technology, applied in secondary batteries, battery pack parts, circuits, etc., can solve the problems of general liquid hanging capacity of microporous membranes and unfavorable ions passing through, achieve good application value and improve hydrophilicity. performance, good corrosion resistance and high temperature resistance

Inactive Publication Date: 2018-07-17
JIESHOU CITY TIANHONG PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ability of the microporous membrane hanging liquid (electrolyte adsorbed by the membrane) produced by the two is average, which is not conducive to the passage of ions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Implementation 1: The polyoxyethylene diaphragm layer includes: 50 parts of epoxy resin, 60 parts of active non-polar filler, 20 parts of propylene oxide diluent, 60 parts of polyvinyl alcohol, 15 parts of artemisia glue, 12 parts of hydroxypropyl cellulose, 13 parts of calcium carbonate, 4 parts of glutaraldehyde, 13 parts of stearyl alcohol and 14 parts of oxidized polyethylene wax.

[0022] The protein-polypropylene polymer material layer includes: 15 parts of zinc stearate, 14 parts of oxidized polyethylene wax, 12 parts of ethyl silicone oil, 5 parts of modified additives, 100 parts of soybean protein, and 50 parts of polypropylene resin.

Embodiment 2

[0023] Implementation 2: The polyoxyethylene diaphragm layer includes: 70 parts of epoxy resin, 70 parts of active non-polar filler, 30 parts of propylene oxide diluent, 70 parts of polyvinyl alcohol, 20 parts of Artemisia gum, 18 parts of hydroxypropyl cellulose, 15 parts of calcium carbonate, 10 parts of glutaraldehyde, 15 parts of stearyl alcohol and 18 parts of oxidized polyethylene wax.

[0024] The protein-polypropylene polymer material layer includes: 20 parts of zinc stearate, 18 parts of oxidized polyethylene wax, 17 parts of ethyl silicone oil, 15 parts of modified additives, 120 parts of soybean protein, and 60 parts of polypropylene resin.

Embodiment 3

[0025] Implementation 3: The polyoxyethylene diaphragm layer includes: 60 parts of epoxy resin, 65 parts of active non-polar filler, 25 parts of propylene oxide thinner, 650-70 parts of polyvinyl alcohol, 18 parts of artemisia gum, 15 parts of hydroxypropyl cellulose 14 parts of calcium carbonate, 6 parts of glutaraldehyde, 14 parts of stearyl alcohol and 16 parts of oxidized polyethylene wax.

[0026] The protein-polypropylene polymer material layer includes: 18 parts of zinc stearate, 16 parts of oxidized polyethylene wax, 15 parts of ethyl silicone oil, 10 parts of modified additives, 110 parts of soybean protein, and 55 parts of polypropylene resin.

[0027] The thickness of lithium battery separator is 12-38μm.

[0028] The hourglass-shaped micropore is composed of two funnel-shaped pores with their small-diameter ends abutted.

[0029] Its preparation method comprises the following steps:

[0030] Preparation of polyoxyethylene diaphragm layer: thermally knead epoxy re...

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Abstract

A processing technology for preparing a lithium battery diaphragm membrane through an air compressing device by pilot test comprises a polyoxyethylene diaphragm membrane layer, a protein-polypropylenepolymerizing material layer and a sand clock shaped micropore, wherein the protein-polypropylene polymerizing material layer is arranged on the lithium battery diaphragm membrane layer; the sand clock shaped micropore is formed in the lithium battery diaphragm membrane layer. According to the technology, the sand clock shaped micropore is formed, so that the liquid suspension capacity of the diaphragm membrane is improved; the lithium battery diaphragm membrane prepared through ultrahigh polymer polyethylene material is high in corrosion resistance and high in high temperature resistance andcan remain stable use property in an electrolyte corrosion environment and temperature change condition during use, so that the use stability of the battery is prolonged, and the battery performancesare improved; in addition, a polyoxyethylene hydrophilic material layer is arranged on the surface, so that the hydrophilic performance of the diaphragm membrane surface is improved; a three-layer structure is provided; an intermediate layer is matched with protein to polarize the capacity to the part for forming a hydrogen bond; compared with oil or other lyophobic solutions, the material is easily dissolved in water; and the application value is high.

Description

technical field [0001] The invention relates to the technical field of lithium battery diaphragms, in particular to a process for preparing lithium battery diaphragms by using a pilot air pressure device. Background technique [0002] Polypropylene is one of the five general-purpose plastics and has a history of more than 50 years since it was industrialized in 1957. Polypropylene has excellent mechanical properties, such as high yield strength, tensile strength, surface hardness and elastic modulus, etc., and has good heat resistance. The melting point of homopolypropylene is as high as 165 ° C, and it can It can be used for a long time under the environment of ℃; polypropylene is a semi-crystalline polymer. After adding nucleating agent or biaxially stretching, the product has good transparency; polypropylene also has good electrical insulation, easy processing and molding, and low price. Advantages such as low cost. At present, the main methods used in the production of...

Claims

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Application Information

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IPC IPC(8): H01M2/14H01M2/16H01M10/0525H01M50/403H01M50/414
CPCH01M10/0525H01M50/403H01M50/411Y02E60/10
Inventor 吴磊胡伟张德顺李汪洋
Owner JIESHOU CITY TIANHONG PACKAGING MATERIAL