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Support film for solution film forming, and method for producing electrolyte membrane using same

A solution-based membrane and electrolyte membrane technology, used in final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve problems such as polymer modification, and achieve good coatability, easy peelability, and good coatability Effect

Active Publication Date: 2016-11-16
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the former can produce membranes without using solvents, there is a problem of polymer modification due to heating

Method used

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  • Support film for solution film forming, and method for producing electrolyte membrane using same
  • Support film for solution film forming, and method for producing electrolyte membrane using same
  • Support film for solution film forming, and method for producing electrolyte membrane using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The PET film ("Lumirror" (registered trademark)-T60 made by Toray Co., Ltd., with a thickness of 125μm) was placed in a 20L stainless steel pressure vessel with fluorine gas and air supply ports and exhaust ports, and the pressure was 100ml / min. After blowing in nitrogen at a flow rate and purging for 1 hour, a mixed gas of fluorine / air=10 / 90 (volume ratio) was blown in at a flow rate of 10 ml / min, and reacted for 10 minutes. Then, nitrogen gas was blown in at a flow rate of 100 ml / min and purged for 1 hour, and then the container was opened to obtain a supporting film A for solution film formation.

[0092] A summary of the ratio of the number of fluorine atoms / the number of carbon atoms, the ratio of the number of oxygen atoms / the number of carbon atoms and the water contact angle, wettability, early peel resistance, and easy peelability of the treated surface of the support film A for solution film formation In Table 1.

Embodiment 2、3、4、5

[0093] [Examples 2, 3, 4, 5, Comparative Example 1]

[0094] The ratio of the fluorine / air mixed gas or the blowing time of Example 1 was changed to manufacture, and support films B to F for solution film formation were obtained. Table 1 summarizes the ratio of the number of fluorine atoms / the number of carbon atoms, the ratio of the number of oxygen atoms / the number of carbon atoms, and the water contact angle, as well as wettability, early peel resistance, and ease of peeling.

Embodiment 6

[0096] Use a continuous fluorine surface treatment device (which has a roll-shaped film unwinding part and a winding part that can control the conveying speed, and has a contact chamber in contact with fluorine gas between the unwinding part and the winding part. The contact chamber for air contact is equipped with fluorine gas and air supply ports and exhaust ports), while blowing fluorine / air=30 / 70 (volume ratio) into the contact chamber in contact with fluorine gas at a flow rate of 10mL / min The surface modification of the PET film (“Lumirror” (registered trademark)-T60, thickness 125μm, manufactured by Toray Co., Ltd.) was continuously performed at a conveying speed of 1m / min while the gas was used to obtain a continuous solution film support film G Treat the membrane. A summary of the ratio of the number of fluorine atoms / the number of carbon atoms, the ratio of the number of oxygen atoms / the number of carbon atoms and the water contact angle, wettability, early peel resis...

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Abstract

The present invention provides a support film for solution film forming, said support film combining polymer solution leakage properties during a solution film forming step, early separation resistance during a drying step and wetting step, and easy release properties when intentionally separating a polymer film. Provided is a support film for solution film forming, said support film being formed by introducing fluorine atoms to at least one surface of a base film that is formed from one or more types of polymers selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene napthalate, polyphenylene sulphide, polysulfones, polyether ketone, polyether ether ketone, polyimides, polyetherimide, polyamides, polyamide-imides, polybenzimidazoles, polycarbonates, polyarylates, and polyvinyl chloride. Therein, the ratio, measured by X-ray photoelectron spectroscopy, of the number of fluorine atoms / the number of carbon atoms in the surface to which the fluorine atoms are introduced, i.e. the modified surface, is 0.02-0.8, inclusive.

Description

Technical field [0001] The present invention relates to a support membrane for solution membrane formation having a specific surface state and a method for producing an electrolyte membrane using the support membrane for solution membrane formation. Background technique [0002] A fuel cell is a power generation device that obtains electrical energy by electrochemically oxidizing fuels such as hydrogen and methanol. In recent years, it has attracted attention as a source of clean energy. Among them, for solid polymer fuel cells, because the standard operating temperature is low, about 100°C, and the energy density is high, it is expected to be a small-scale distributed power generation facility, a power generation device for moving objects such as automobiles, ships, etc. The wide range of applications. In addition, it is also attracting attention as a power source for small mobile devices and portable devices, and it is expected to replace secondary batteries such as nickel-hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J7/12H01M8/1081
CPCH01M8/1069C08J5/2256C08J7/126C08J2367/02C08J2371/00C08J2300/00C08J2323/04C08J2323/10H01M8/1081Y02P70/50Y02E60/50C08J5/2262H01M8/1088H01M2008/1095
Inventor 足立真哉出原大辅
Owner TORAY IND INC