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Battery capacitor membrane filtration material prepared by using wet papermaking forming process, and preparation method thereof

A diaphragm filter and capacitor technology, applied in the field of filter separation and electrochemical, wet papermaking, can solve the problem of uncontrollable pore size, etc., achieve the effect of small size deformation, long service life and good filtering effect

Inactive Publication Date: 2012-10-17
吕凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art that the pore size cannot be controlled, the high temperature resistance of the diaphragm is improved, the closed cell temperature is improved, and the internal resistance of the diaphragm is reduced. Plant fiber and synthetic fiber are used as raw materials to mix inorganic powder and organic powder. Homogeneous slurry, wet-laid papermaking molding process, to prepare battery capacitor diaphragm filter material

Method used

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  • Battery capacitor membrane filtration material prepared by using wet papermaking forming process, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 5 kilograms of wood pulp fibers: beat by 2% concentration;

[0035] (2) 95 kilograms of polyvinyl alcohol fibers: beating by 2% concentration;

[0036] (3) 5 kilograms of polyethylene powder, 20 kilograms of activated white clay powder: mix and homogenize by 5% concentration;

[0037] (4) Add plant fiber slurry, synthetic fiber slurry and organic-inorganic powder slurry to a beater or a slurry delivery pipeline, and mix evenly;

[0038] (5) Use a rotary screen former to form on the Internet at a concentration of 0.1%;

[0039] (6) Using a vacuum pump to absorb water and press for dehydration;

[0040] (7) Use a drying cylinder to directly contact once for drying;

[0041] (8) Carry out conventional method coating with the acrylic glue solution of concentration 10%;

[0042] (9) Direct contact with the drying cylinder for secondary drying;

[0043] (10) The finished product of the filter material for the battery capacitor diaphragm is obtained by hot pressing wi...

Embodiment 2

[0045] (1) 8 kilograms of cotton pulp fibers: beating by 1% concentration;

[0046](2) 62 kilograms of polypropylene fibers and 30 kilograms of polyvinyl alcohol fibers: beating at a concentration of 1%;

[0047] (3) 16 kilograms of potassium titanate powder and 4 kilograms of polypropylene powder: mix and homogenize at a concentration of 4%;

[0048] (4) Add plant fiber slurry, synthetic fiber slurry and organic-inorganic powder slurry to a beater or a slurry delivery pipeline, and mix evenly;

[0049] (5) Use inclined wire former to form on the Internet at a concentration of 0.05%;

[0050] (6) Using a vacuum pump to absorb water and press for dehydration;

[0051] (7) Use a drying cylinder to directly contact once for drying;

[0052] (8) Carry out conventional method coating with the polyvinyl alcohol glue solution of concentration 10%;

[0053] (9) Direct contact with the drying cylinder for secondary drying;

[0054] (10) The finished product of the filter material ...

Embodiment 3

[0056] (1) 10 kilograms of wood pulp fibers: beating at a concentration of 1.5%;

[0057] (2) 70 kilograms of polyester fiber and 20 kilograms of polyvinyl alcohol fiber: beating by 1% concentration;

[0058] (3) 10 kg of potassium titanate powder, 10 kg of activated white clay, and 4 kg of polyethylene wax powder: mix and homogenize at a concentration of 6%;

[0059] (4) Add plant fiber slurry, synthetic fiber slurry and organic-inorganic powder slurry to a beater or a slurry delivery pipeline, and mix evenly;

[0060] (5) Use a rotary screen former to form on the Internet at a concentration of 0.06%;

[0061] (6) Using a vacuum pump to absorb water and press for dehydration;

[0062] (7) Use a drying cylinder to directly contact once for drying;

[0063] (8) carry out conventional method coating with the phenolic resin glue solution of concentration 10% and modified starch glue solution;

[0064] (9) Direct contact with the drying cylinder for secondary drying;

[0065]...

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Abstract

The present invention discloses a battery capacitor membrane filtration material prepared by using a wet papermaking forming process, and a preparation method thereof. Raw materials for preparing the material comprise, fibers, inorganic powder, organic powder and a reinforced material, wherein the fibers comprise, by weight, 3-10% of plant fibers and 90-97% of synthetic fibers, the weight of the inorganic powder is 1-40% of the weight of the fibers, the weight of the organic powder is 0.1-20% of the weight of the fibers, and the weight of the reinforced material is 10-30% of the weight of the fibers. The preparation method is characterized by: respectively carrying out pulping on the plant fibers and the synthetic fibers, and respectively carrying out high pressure homogenization mixing on the inorganic powder and the organic powder. The preparation method of the present invention has the following advantages that: the process is simple, the hole size can be effectively controlled, and the hole uniformity can be improved, wherein the holes are the labyrinth type curved holes. The material of the present invention has the following advantages that: filtration accuracy and filtration efficiency are high, internal resistance of the membrane prepared by the material is lowered, the membrane prepared by the material has characteristics of high liquid retention rate, good high temperature resistance, small deformation size, avoidance of dendrite generation and long service life. The raw material and the preparation cost of the material of the present invention are the same as the raw material and the preparation cost of full chemical fiber filtration material, and the performance price ratio of the material of the present invention is more excellent than the performance price ratio of the traditional materials, such that good economic benefits and social benefits are provided.

Description

technical field [0001] The invention belongs to the technical fields of wet papermaking, filtration separation and electrochemistry, and relates to a wet papermaking formed battery capacitor diaphragm filter material and a preparation method thereof. Background technique [0002] The all-plant fiber filter material mainly relies on the principle of sieving to filter impurities, that is, the filtration accuracy is determined according to the size of the pore size. The disadvantage of this material is that it can only achieve surface filtration of the material and is not resistant to chemical corrosion, that is, impurities are mainly intercepted by the surface of the material, while smaller impurities basically pass through the filter material. During use, the pores on the surface of the filter material are quickly completely blocked by impurities, and the pores in the deep layer of the material cannot be fully utilized. Therefore, this type of material has higher filtration ...

Claims

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Application Information

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IPC IPC(8): B01D39/16D21H27/00H01G13/00
CPCY02E60/10
Inventor 吕凯
Owner 吕凯
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