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Functional film prepared by functionalized organic powder, low-temperature non-damaging manufacturing method and application

An organic powder and manufacturing method technology, applied in the field of functional membranes, can solve problems such as difficulty in manufacturing functional organic membranes, affecting membrane material ion conductivity, environmental pollution, etc., and achieve excellent ion conductivity, high molecular weight, and long chain segments Effect

Active Publication Date: 2022-03-22
东莞奥创能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, solvents are introduced in the membrane manufacturing process, which will cause environmental pollution and high energy consumption during the solvent drying process. The membrane itself will produce voids, making it difficult to manufacture dense functional organic membranes, thus affecting the ion conductivity of the membrane.

Method used

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  • Functional film prepared by functionalized organic powder, low-temperature non-damaging manufacturing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix the pre-lithiated polyvinylidene fluoride (PVDF) powder and PTFE powder according to the weight percentage of 92%:8%. 2 hours until powder A is obtained evenly. Powder A is ground in a stainless steel closed chamber with dry compressed air whose air velocity reaches supersonic speed, and the air is preheated before contacting the powder, and the temperature reaches 45°C to prepare mixed powder B, and the ground powder B Exhausted with air flow and collected. The powder B extruder removes the gas in the powder to form a continuous cake-shaped broadband, and then rolls it into a functional film C by a hot roller press. The temperature of the hot pressing film is 100°C, and the film thickness is about 90 microns. The functional film C is wound up. Two or more sheets of film C are combined by hot pressing to form a composite film D. The thermal lamination temperature is 85°C, and the film thickness can reach about 60 microns. The lithium ion conductivity of the prep...

Embodiment 2

[0037] Mix the pre-lithiated polyphenylene sulfide (PPS) powder and PTFE powder according to the weight percentage of 90%:10%, in a VC type high-efficiency asymmetric mixer, and in a low-temperature refrigerator at 5°C, mix for 2 hour to obtain powder A uniformly. Powder A is ground in a stainless steel closed chamber with dry compressed air whose air velocity reaches supersonic speed, and the air is preheated before contacting the powder, and the temperature reaches 45°C to prepare mixed powder B, and the ground powder B Exhausted with air flow and collected. Powder B is made into a continuous cake-shaped broadband through the extruder to remove the gas in the powder, and then rolled into film C by using a hot roller press. The hot pressing temperature is 90°C, and the film thickness can reach about 100 microns. Film C is wound up. Two or more sheets of film C are combined by hot pressing to form a composite film D. The thermal lamination temperature is 85°C, and the film ...

Embodiment 3

[0039] Mix the pre-lithiated polyimide (PI) powder and PTFE powder according to the weight percentage of 93%:7%, in a VC type high-efficiency asymmetric mixer, and in a low-temperature refrigerator at 5°C, mix for 2 hour to obtain powder A uniformly. Powder A is ground in a stainless steel closed chamber with dry compressed air whose air velocity reaches supersonic speed, and the air is preheated before contacting the powder, and the temperature reaches 45°C to prepare mixed powder B, and the ground powder B Exhausted with air flow and collected. The powder B is made into a continuous cake-shaped broadband through an extruder to remove the gas in the powder, and then rolled into a film C by a hot roller press. The hot pressing temperature is 120°C, and the film thickness can reach about 80 microns. The functional film C is wound up. Two or more sheets of film C are combined by hot pressing to form a composite film D. The thermal lamination temperature is 90°C, and the film ...

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Abstract

The invention provides a functional membrane prepared by using functionalized organic powder, a low-temperature non-damaging manufacturing method and its application. The organic powder membrane material is composed of functionalized organic powder and polytetrafluoroethylene (PTFE). The heated supersonic airflow opens the polytetrafluoroethylene molecular chain, bonds the functionalized organic powder, and extrudes the air in the powder to form a continuous cake. Layer-film hot-pressing composite process forms a low-porosity, uniform-thickness film. This method can continuously roll-to-roll to produce micron-sized organic membranes, which can maximize the physical and chemical properties of organic powders and prevent performance damage or anisotropy caused by recrystallization due to high temperature or introduction of solvents into the film. . No solvent is introduced in the manufacturing process, which avoids the problems of environmental pollution, high energy consumption and uneven density of membrane materials caused by the solvent drying process.

Description

technical field [0001] The invention relates to a functional film prepared by using functionalized organic powder, a low-temperature non-damaging manufacturing method and its application, and belongs to the technical field of functional material preparation. Background technique [0002] Functionalized organic membranes are core materials for petrochemical catalysis, proton conduction membranes for fuel cells, and all-solid-state lithium-ion batteries. Currently, the commonly used manufacturing methods for organic membranes are thermal injection molding or salivation molding. These film-forming methods usually use high-temperature melting or solvents to help film formation. For organic powders that have been functionalized, such as organic powders with catalytic functions, organic powders with proton conduction functions, and organic powders with ion conduction functions Powder, melting at high temperature or adding solvent will change the physical and chemical properties of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L27/16C08L81/02C08L79/08C08L75/04C08L27/18B01J31/06H01M8/1044H01M10/0565
CPCC08J5/18B01J31/06H01M10/0565H01M8/1044C08J2327/16C08J2381/02C08J2379/08C08J2375/04C08J2427/18Y02P70/50Y02E60/50Y02E60/10
Inventor 周海涛俞崇晨高宏权
Owner 东莞奥创能源科技有限公司
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