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Polymer composite separator for lead acid storage battery and preparation method thereof

A lead-acid battery and polymer technology, used in lead-acid battery, lead-acid battery construction, battery pack components and other directions, can solve the problems of poor strength and toughness, easy to break, short circuit of separator, etc., and achieve a large tortuosity coefficient. , the effect of prolonging the service life and improving the compatibility

Active Publication Date: 2017-03-22
WUHU HANGDA NETWORK IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that the short circuit problem of the separator is particularly prominent
Existing partitions on the market more or less have penetration problems, have large pore size, poor strength and toughness, and are prone to damage, cracking and other problems during the assembly process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of polymer composite separator for lead-acid storage battery proposed by the present invention comprises the following raw materials in parts by weight: 58 parts of polypropylene, 60 parts of polyethylene, 8 parts of silicon dioxide, 18 parts of maleic anhydride, benzoyl peroxide 2 parts, 6 parts of dimethylformamide, 12 parts of glass fiber, 15 parts of wetting agent, 1.5 parts of methacryloyl chromium chloride complex, 1.5 parts of antioxidant, 4 parts of rare earth material, 12 parts of hydrochloric acid solution, non-ionic 20 parts of surfactant.

[0021] Its preparation method comprises the following steps:

[0022] S1. Add the polypropylene, polyethylene, maleic anhydride, benzoyl peroxide and dimethylformamide of the specific gravity into the melting tank, and stir slowly while heating at a high temperature of 185 ° C. After it is completely melted, Stir at a high speed of 580r / min for 22 minutes, and mix uniformly to obtain a modified mixture A;

[0023...

Embodiment 2

[0028] A kind of polymer composite separator for lead-acid storage battery that the present invention proposes, comprises the raw material of following weight portion: polypropylene 70 parts, polyethylene 40 parts, silicon dioxide 6 parts, maleic anhydride 22 parts, benzoyl peroxide 1.5 parts, 4 parts of thioester, 8 parts of glass fiber, 12 parts of sizing agent, 0.8 parts of γ-ammonopropyltriethoxysilane, 1 part of antioxidant, 2 parts of rare earth material, 10 parts of hydrochloric acid solution, 18 parts of ionic surfactant.

[0029] Its preparation method comprises the following steps:

[0030] S1. Add the polypropylene, polyethylene, maleic anhydride, benzoyl peroxide and thioester of the specific gravity into the melting tank, and stir slowly while heating at a high temperature of 170°C. 650r / min speed, high-speed stirring for 30min, mix well to obtain modified mixture A;

[0031] S2. Add the glass fiber with the specific gravity into the hydrochloric acid solution w...

Embodiment 3

[0036] A polymer composite separator for lead-acid battery proposed by the present invention comprises the following raw materials in parts by weight: 62 parts of polypropylene, 50 parts of polyethylene, 12 parts of silicon dioxide, 15 parts of maleic anhydride, benzoyl peroxide 1 part, 8 parts of dimethylformamide, 15 parts of glass fiber, 18 parts of wetting agent, 2 parts of methacryloyl chromium chloride complex, 3 parts of antioxidant, 2.5 parts of rare earth material, 16 parts of hydrochloric acid solution, non-ionic 24 parts of surfactants.

[0037] Its preparation method comprises the following steps:

[0038] S1. Add the polypropylene, polyethylene, maleic anhydride, benzoyl peroxide and dimethylformamide of the specific gravity into the melting tank, and stir slowly while heating at a high temperature of 190 ° C. After it is completely melted, Stir at a high speed of 700r / min for 18 minutes, and mix evenly to obtain a modified mixture A;

[0039] S2. Add the glass ...

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PUM

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Abstract

The invention discloses a polymer composite separator for a lead acid storage battery, and the polymer composite separator comprises the following raw materials by weight: 50-70 parts of polypropylene, 40-60 parts of polyethylene, 5-12 parts of silica, 15-25 parts of maleic anhydride, 1-3 parts of an initiator, 4-8 parts of an additive, 8-15 parts of glass fiber, 10-20 parts of an impregnating compound, 0.8-2 parts of a coupling agent, 1-3 parts of an antioxidant, 2-5 parts of a rare earth material, 10-16 parts of a hydrochloric acid solution and 16-24 parts of a non-ionic surfactant. The polymer composite separator for the lead acid storage battery has the advantages of super-high strength, toughness and permeability resistance, large flexural coefficient, good heat resistance and oxidation resistance, simple preparation method, no high cost equipment investment, low production cost and suitability for industrial production, the polymer composite separator for the lead acid storage battery is used in the lead-acid battery for effectively reducing the short-circuit problem caused by the separator, prolongs the service life of the lead acid storage battery, and widens the application prospect.

Description

technical field [0001] The invention relates to the technical field of storage batteries, in particular to a polymer composite separator for lead-acid storage batteries and a preparation method thereof. Background technique [0002] The separator is called the "third pole" of the battery. It is a component between the positive and negative poles of the battery that can prevent the short circuit of the positive and negative poles and ensure ion conduction. Separator is an important part of battery production, and its performance directly affects the discharge capacity and charge-discharge cycle life of the battery. The existing lead-acid battery separators on the market include: polyvinyl chloride sheet separators, polypropylene fiber separators, polyethylene film or bag separators, and glass fiber composite separators. With the vigorous development of transportation and telecommunications, lead-acid batteries, as a mature power supply product, are being used more and more, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M10/12H01M50/40H01M50/417H01M50/44H01M50/446
CPCH01M10/12H01M50/403H01M50/431Y02E60/10Y02P70/50
Inventor 缪东伟
Owner WUHU HANGDA NETWORK IND CO LTD
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