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Microporous polymer film

A technology of polymer film and microporosity, which is applied in the direction of electrical components, circuits, battery components, etc., can solve the problems of poor tensile strength, achieve high longitudinal tensile strength, meet the needs of popularization and application, and have a long service life Effect

Active Publication Date: 2020-11-13
河南银金达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a microporous polymer membrane to solve the problem of poor tensile strength existing in existing membranes

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0025] In an embodiment, the microporous polymer film, in parts by mass, includes the following raw materials: 50-68 parts polypropylene, 0.8-1.2 parts nucleating agent, 0.4-0.9 parts thickener, 3- 5 parts binder, 0.2-0.5 parts wetting agent, 3-6 parts triethylene glycol dimethacrylate, 0.3-0.7 parts sodium cetylbenzene sulfonate, 2-5 parts trimethylsilanol Sodium, 1-2 parts of zinc pentaerythritol, the nucleating agent includes one or more of a complex of a metal salt and a dicarboxylic acid, a fused ring compound, an aromatic amine compound, and a rare earth compound; the thickening The agent is carboxymethyl ethyl ether cellulose; the binder is methyl 3-methoxyacrylate; the wetting agent is polyoxyethylene laureth; the preparation method includes the following steps:

[0026] (1) After mixing the raw materials in the above parts by mass, the microwave power is 120-250W, the temperature is 48-55°C, and the rotation speed is 200-300r / min, and the mixture is stirred for 16-23min ...

Embodiment 1

[0031] A microporous polymer film, in parts by mass, including the following raw materials: 60 parts of polypropylene (F401 type product provided by Sinopec Yangzi Petrochemical Co., Ltd., with an isotacticity of 98%), 1 part of nucleation Agent (DX-Z3C model product provided by Dongguan Dingxin Plastic Materials Co., Ltd.), 0.7 parts thickener, 4 parts binder, 0.3 parts wetting agent, 5 parts triethylene glycol dimethacrylate, 0.6 parts of sodium cetylbenzene sulfonate, 3 parts of sodium trimethylsilanate, 1.6 parts of zinc pentaerythritol; the thickener is carboxymethyl ethyl ether cellulose; the binder is 3-methoxy Methyl acrylate; the wetting agent is lauryl alcohol polyoxyethylene ether; its preparation method includes the following steps:

[0032] (1) After mixing the raw materials in the above parts by mass, stir at a microwave power of 200W, a temperature of 52°C, and a rotation speed of 250r / min for 20 minutes to prepare a mixture;

[0033] (2) The mixture obtained in ste...

Embodiment 2

[0036] A microporous polymer film, in parts by mass, including the following raw materials: 52 parts of polypropylene (F401 type product provided by Sinopec Yangzi Petrochemical Co., Ltd., with an isotacticity of 98%), 0.8 parts of nucleation Agent (DX-Z3C model product provided by Dongguan Dingxin Plastic Materials Co., Ltd.), 0.5 parts thickener, 3 parts binder, 0.2 parts wetting agent, 3 parts triethylene glycol dimethacrylate, 0.3 parts of sodium cetylbenzene sulfonate, 2.3 parts of sodium trimethylsilanate, 1 part of zinc pentaerythritol; the thickener is carboxymethyl ethyl ether cellulose; the binder is 3-methoxy Methyl acrylate; the wetting agent is lauryl alcohol polyoxyethylene ether; its preparation method includes the following steps:

[0037] (1) After mixing the raw materials in the above parts by mass, the microwave power is 150W, the temperature is 48°C, and the rotation speed is 200r / min for 22min to prepare the mixture;

[0038] (2) The mixture obtained in step (...

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Abstract

The invention discloses a microporous polymer film. The microporous polymer film is prepared from the following raw materials in parts by weight: 50-68 parts of polypropylene, 0.8-1.2 parts of a nucleating agent, 0.4-0.9 part of a thickening agent, 3-5 parts of a binding agent, 0.2-0.5 part of a wetting agent, 3-6 parts of triethylene glycol dimethacrylate, 0.3-0.7 part of sodium hexadecyl benzenesulfonate, 2-5 parts of sodium trimethylsilanolate and 1-2 parts of zinc pentaerythritol. The microporous polymer membrane disclosed by the invention has the advantages of continuous production, simple technological process operation, low energy consumption and the like; in addition, the microporous polymer film disclosed by the invention is high in longitudinal tensile strength and long in service life, and can meet the requirements of popularization and application.

Description

Technical field [0001] The invention belongs to the technical field of diaphragm preparation, and specifically relates to a microporous polymer membrane. Background technique [0002] Lithium-ion batteries mainly rely on lithium ions to move between the positive and negative electrodes to work. There is a layer of membrane material between the positive electrode and the negative electrode of a lithium ion battery, usually called a separator, which is an important part of the lithium ion battery. The diaphragm has two basic functions: to isolate the positive and negative electrodes to prevent short circuits in the battery; it can be wetted by the electrolyte to form an ion migration channel. In practical applications, it should also have the following characteristics: (1) electronic insulation; (2) high conductivity; (3) good mechanical properties, which can be processed by mechanical manufacturing; (4) uniform thickness; (5) when heated Dimensionally stable deformation should b...

Claims

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Application Information

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IPC IPC(8): H01M2/16H01M2/14
Inventor 李国庆李航樊鹏鹏蔡文彬仲宁宁
Owner 河南银金达新材料股份有限公司
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