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High-strength easily-degradable plastic sealing film for battery and preparation method of plastic sealing film

An easily degradable, high-strength technology, which is applied in the field of high-strength and easily degradable battery plastic sealing film and its preparation, can solve the problems that the plastic sealing film affects the service life of the battery and the safety of use, and achieve excellent mechanical strength, strong tensile resistance, The effect of simple method

Inactive Publication Date: 2018-09-28
WUHU ZHEXIN NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the external plastic layer of the battery needs to be coated on the surface of the battery by compression molding, if the strength of the plastic film used is not enough or poor, it will directly affect the service life and safety of the battery

Method used

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preparation example Construction

[0012] The invention provides a method for preparing a high-strength and easily degradable battery plastic sealing film. The preparation method comprises: polyethylene, polycarbonate resin, polyethylene terephthalate, diatomaceous earth, a plasticizer, After the heat stabilizer and flame retardant are mixed, they are extruded and granulated to obtain a masterbatch M; the masterbatch M is subjected to a film blowing process to obtain the high-strength easily degradable battery plastic film; wherein, relative to 100 parts by weight of Polypropylene resin, the consumption of described polycarbonate resin is 30-45 weight part, the consumption of described polyethylene terephthalate is 25-45 weight part, the consumption of described diatomite is 10-20 parts by weight, the amount of the plasticizer is 1-5 parts by weight, the amount of the heat stabilizer is 2-6 parts by weight, and the amount of the flame retardant is 2-10 parts by weight.

[0013] In the above technical solution, ...

Embodiment 1

[0023] 100g polypropylene resin (weight average molecular weight is 30,000), 30g polycarbonate resin (weight average molecular weight is 40,000), 35g polyethylene terephthalate, 14g polycarbonate resin, 2g phthalic acid Dibutyl ester, 3g calcium stearate and 4g flame retardant (flame retardant composition comprises decabromodiphenylethane and talcum powder, and the mass ratio of decabromodiphenylethane and talcum powder is 3:1) after mixing Stir at 2000rpm for 24 hours, extrude and granulate at 170°C to obtain a masterbatch M; the masterbatch M is subjected to a film blowing process to obtain a high-strength and easily degradable battery plastic sealing film A1.

Embodiment 2

[0025] 100g polypropylene resin (weight average molecular weight is 40,000), 40g polycarbonate resin (weight average molecular weight is 50,000), 40g polyethylene terephthalate, 16g polycarbonate resin, 4g phthalic acid Butylbenzyl ester, 5g calcium ricinoleate and 6g flame retardant (flame retardant composition comprises decabromodiphenylethane and talcum powder, and the mass ratio of decabromodiphenylethane and talcum powder is 6:1) after mixing 1. Stir at 2500rpm for 20h, extrude and granulate at 175°C to obtain a masterbatch M; subject the masterbatch M to a film blowing process to obtain a high-strength and easily degradable battery plastic film A2.

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Abstract

The invention discloses a high-strength easily-degradable plastic sealing film for a battery and a preparation method of the plastic sealing film. The method comprises the following steps: 1) mixing polypropylene resin, polycarbonate resin, polyethylene terephthalate, diatomaceous earth, a plasticizer, a heat stabilizer and a flame retardant, and performing extrusion granulation to obtain a masterbatch M; and 2) performing film blowing on the master batch M to obtain the high-strength easily-degradable plastic sealing film for the battery. The high-strength easily-degradable plastic sealing film for the battery disclosed by the invention has excellent tensile strength and telescopic properties, can well seal the surface of the battery and ensure the long-term safe use of the battery; andthe surface plastic sealing film is easy to degrade and facilitates environmental protection.

Description

technical field [0001] The invention relates to the field of battery preparation, in particular to a high-strength and easily degradable battery plastic sealing film and a preparation method thereof. Background technique [0002] One of the most commonly used batteries in daily life is a tubular dry battery, and the exterior of the dry battery needs to be sealed with a plastic layer to protect the stability of its internal electrolyte and battery performance. [0003] Since the plastic sealing layer on the outside of the battery needs to be wrapped on the surface of the battery by compression molding, if the strength of the plastic sealing film used is not enough or poor, it will directly affect the service life and safety of the battery. Contents of the invention [0004] The purpose of the present invention is to provide a high-strength and easily degradable battery plastic sealing film and its preparation method. The high-strength and easily degradable battery plastic s...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L69/00C08L67/02C08K13/02C08K5/12C08K5/098C08K3/34C08K5/03C08J5/18
CPCC08J5/18C08J2323/12C08J2467/02C08J2469/00C08K3/34C08K5/03C08K5/098C08K5/12
Inventor 高博王伟周衡郭文波
Owner WUHU ZHEXIN NEW ENERGY
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