Hydrophilic diaphragm paper for zinc-silver battery and preparation method of hydrophilic diaphragm paper

A zinc-silver battery and separator paper technology, applied in pulp beating method, special paper, battery pack components, etc., can solve problems such as separator breakage, low tensile strength and wet tensile strength of hydrophilic separator, and battery short circuit. , to achieve the effect of reducing pore size, increasing wet tensile strength, and increasing strength

Active Publication Date: 2022-01-11
浙江鹏辰造纸研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrophilic separator mainly plays the role of isolation. It is made of alkali-resistant plant fiber and has good lyophilicity. After the electrolyte is injected, it can quickly activate the battery to reach the normal working voltage. The tensile strength is low, and the diaphragm may be damaged when encountering shock or impact, resulting in a short circuit of the battery.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Take 70kg of cotton pulp and put it into a beater that has stored 3430kg of water. The mass concentration of the fibers in the water is 2%. First, disperse for 20 minutes, and then beat with a knife until the beating degree is 35°SR, and the wet weight of the fibers is 4.6 g, then pick up the knife and put the slurry into the slurry mixing tank.

[0031] 2) Get 30kg of Manila hemp pulp and put it into a beater that has stored 1470kg of water. The mass concentration of the fiber in water is 2%, and it is first decomposed for 20 minutes, and then beaten with a knife until the degree of beating is 22 ° SR, and the wet weight of the fiber is 16.4g, then lift the knife and put the slurry into the slurry mixing tank.

[0032] 3) Add 45,000kg of water in the slurry mixing tank until the mass concentration of the slurry is 0.2%, add 0.5% polyamide epichlorohydrin resin (mass fraction, to the total weight of the dry fiber), and then add 0.4% polyamide Ethylene oxide dispersa...

Embodiment 2

[0035] 1) Take 80kg of cotton pulp and put it into a beater that has stored 3920kg of water. The mass concentration of the fiber in water is 2%. First, disperse it for 20 minutes, and then beat it with a knife until the beating degree is 25°SR, and the wet weight of the fiber is 7.5 g, then pick up the knife and put the slurry into the slurry mixing tank.

[0036] 2) Get 20kg of Manila hemp pulp and put it into a beater that has stored 980kg of water. The mass concentration of the fiber in water is 2%. First, it is thawed for 20 minutes, and then beaten with a knife until the degree of beating is 18 ° SR, and the wet weight of the fiber is 17.9g, then lift the knife and put the slurry into the slurry mixing tank.

[0037] 3) Add 45,000kg of water in the mixing tank until the mass concentration of the slurry is 0.2%, add 0.6% polyamide epichlorohydrin resin (mass fraction, to the total weight of absolute dry fibers), and then add 0.2% polyamide Ethylene oxide dispersant (mass ...

Embodiment 3

[0040] 1) Take 75kg of cotton pulp and put it into a beater that has stored 2425kg of water. The mass concentration of the fiber in water is 3%. First, it is thawed for 20 minutes, and then it is beaten with a knife until the beating degree is 40°SR, and the wet weight of the fiber is 4.2 g, then pick up the knife and put the slurry into the slurry mixing tank.

[0041]2) Get 25kg of Manila hemp pulp and put it into a beater that has stored 1225kg of water. The mass concentration of the fiber in water is 2%, and it is first thawed for 20 minutes, and then beaten with a knife until the degree of beating is 25 ° SR, and the wet weight of the fiber is 15.4g, then lift the knife and put the slurry into the slurry mixing tank.

[0042] 3) Add 46,250kg of water in the slurry mixing tank until the mass concentration of the slurry is 0.2%, add 0.8% polyamide epichlorohydrin resin (mass fraction, to the total weight of absolute dry fibers), and then add 0.4% polyamide Ethylene oxide d...

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Abstract

The invention discloses hydrophilic diaphragm paper for a zinc-silver battery and a preparation method of the hydrophilic diaphragm paper, and belongs to the technical field of special paper and manufacturing of the special paper. The raw materials comprise the following components in parts by weight: 70-90 parts of cotton pulp fibers and 10-30 parts of Manila hemp pulp fibers, after the raw materials are subjected to pulping treatment, a certain amount of wet strength agent is added, water is added, the raw materials are uniformly mixed, the raw materials are dispersed by a dispersing agent and then conveyed to an inclined wire paper machine, and a finished bobbin paper product is obtained through the steps of forming, squeezing, drying, reeling, rewinding, slitting and the like. The diaphragm paper has the characteristics of high wet tensile strength, high alkali absorption speed, high alkali absorption rate, good hydrophilicity and the like, and can meet the requirement of rapid activation of the zinc-silver reserve battery.

Description

technical field [0001] The invention belongs to the technical field of special paper and its manufacture, and in particular relates to a hydrophilic separator paper for zinc-silver batteries and a preparation method thereof. Background technique [0002] Electrochemical energy plays an important role in the sustainable development of energy due to its many advantages such as cleanliness, high efficiency, and convenient maintenance. With the advancement of science and technology and the improvement of the quality of life, various new types of batteries have emerged accordingly, especially for the development of industries such as communications, automobiles, electronics, and aerospace. The demand for long-lasting and pollution-free batteries is increasingly strong, which indirectly promotes the continuous updating of battery varieties. [0003] Zinc-silver batteries have the advantages of high specific energy, large specific power, stable discharge voltage, large current dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/12D21H11/12D21H17/55D21H21/20D21H21/08D21D1/02D21F11/00H01M50/44H01M50/403
CPCD21H27/00D21H11/12D21H17/55D21H21/20D21H21/08D21D1/02D21F11/00H01M50/44H01M50/403Y02E60/10
Inventor 胡晓东唐宝华周纪灿李红祝吴伯超
Owner 浙江鹏辰造纸研究所有限公司
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