CN103937134B - Tetrafluoro emulsion compositions, waterproof ventilated membrane and preparation method thereof - Google Patents
Tetrafluoro emulsion compositions, waterproof ventilated membrane and preparation method thereof Download PDFInfo
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- CN103937134B CN103937134B CN201410150762.XA CN201410150762A CN103937134B CN 103937134 B CN103937134 B CN 103937134B CN 201410150762 A CN201410150762 A CN 201410150762A CN 103937134 B CN103937134 B CN 103937134B
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Abstract
The invention provides a kind of tetrafluoro emulsion compositions to comprise: four fluorine emulsion 45-75 parts, conducting powder 6-12 part and silicon rubber 30-60 part, wherein, the mass concentration of described four fluorine emulsions is 60%.Present invention also offers a kind of waterproof ventilated membrane, obtained by above-mentioned tetrafluoro emulsion compositions roll extrusion film forming repeatedly in rubber mixing machine.Tetrafluoro emulsion compositions provided by the invention makes waterproof ventilated membrane, there is excellent mechanical property, water resistance and permeability, air electrode electrolytic solution can be effectively avoided to omit or volatilization, and the problem such as the carbonating of electrolytic solution, greatly can promote the working efficiency of air electrode, extend the work-ing life of air electrode.
Description
Technical field
The present invention relates to a kind of tetrafluoro emulsion compositions, also relate to a kind of waterproof ventilated membrane and preparation method thereof.
Background technology
Air electrode refers to have air to participate in the electrode of electrode reaction, as hydrogen electrode, oxygen electrode etc.The gas molecule ion corresponding to solution gas/liquid mutually between inert metal on accept electronics, thus set up the balance of electrode reaction.
At present, air electrode is mainly made up of collector, Catalytic Layer, waterproof layer.Wherein, Catalytic Layer is by gac, catalyzer, acetylene black and polytetrafluoroethylsolution solution second alcohol and water are mixed and made into soup compound, then be coated in nickel foam, then dry and be prepared from, or by gac, catalyzer, acetylene black and polytetrafluoroethylsolution solution second alcohol and water are mixed and made into soup compound post-drying and be repeatedly rolled into flake afterwards and the coarctate method of nickel foam roller form.The moiety of waterproof ventilative layer comprises gac, acetylene black, pore-forming material and tackiness agent ptfe emulsion etc., and the method identical with Catalytic Layer can be adopted to be prepared from.
But waterproof and the air permeable effect of current waterproof ventilative layer are undesirable, bad mechanical strength, easily cause air electrode to there is electrolytic solution and omit or volatilization, and the problem such as the carbonating of electrolytic solution, limit its application.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of tetrafluoro emulsion compositions is provided, and the waterproof ventilated membrane that this tetrafluoro emulsion compositions is prepared from, there is excellent mechanical property, waterproof and permeability.
First aspect of the present invention is to provide a kind of tetrafluoro emulsion compositions, according to mass parts meter, described tetrafluoro emulsion compositions comprises: four fluorine emulsion 45-75 parts, conducting powder 6-12 part and silicon rubber 30-60 part, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Preferably, described tetrafluoro emulsion compositions comprises: four fluorine emulsion 50-70 parts, conducting powder 7-10 part and silicon rubber 35-55 part.
Preferably, described tetrafluoro emulsion compositions comprises: four fluorine emulsion 55-65 parts, conducting powder 8-9 part and silicon rubber 40-50 part.
In foregoing of the present invention, the conducting material powder that described conducting powder is stable chemical performance, erosion resistance is strong, specific conductivity is high.
Preferably, described conducting powder is one or more in metallic conduction powder, metal conductive oxide powder.
Second aspect of the present invention is to provide a kind of waterproof ventilated membrane, and described waterproof ventilated membrane is made up of the tetrafluoro emulsion compositions described in the present invention first aspect.
Preferably, the thickness of described waterproof ventilated membrane is 100-500 μm.
3rd aspect of the present invention is to provide the preparation method of the waterproof ventilated membrane described in a kind of the present invention second aspect, comprises the following steps:
Step 1, takes four fluorine emulsions, conducting powder and silicon rubber, mix and blend in proportion, adds dehydrated alcohol breakdown of emulsion simultaneously, and make material mixing even, wherein the mass ratio of four fluorine emulsions and ethanol is (45-75): (4-12);
Step 2, control temperature 800-100 DEG C in rubber mixing machine, roll extrusion film forming repeatedly, both.
Preferably, in step 1, the mass ratio of four fluorine emulsions and ethanol is (45-75): (6-10).
Preferably, described preparation method also comprises pre-treatment step, by conducting powder and silicon rubber grinding refinement.
Preferably, described rubber mixing machine is opening rubber mixing machine.
Tetrafluoro emulsion compositions provided by the invention makes waterproof ventilated membrane, there is excellent mechanical property, water resistance and permeability, air electrode electrolytic solution can be effectively avoided to omit or volatilization, and the problem such as the carbonating of electrolytic solution, greatly can promote the working efficiency of air electrode, extend the work-ing life of air electrode.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated, to understand the present invention better.
Embodiment 1
A kind of waterproof ventilated membrane, moiety comprises: four fluorine emulsions 75 parts, conducting powder 6 parts and 60 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Take four fluorine emulsions, conducting powder and silicon rubber in proportion, mix and blend, add dehydrated alcohol breakdown of emulsion simultaneously, make material mixing even, wherein the mass ratio of four fluorine emulsions and ethanol is 75:8; Control temperature 100 DEG C in rubber mixing machine, roll extrusion film forming repeatedly, controlling diaphragm thickness is 300 μm, both.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 50 parts, conducting powder 7 parts and 35 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Embodiment 3
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 70 parts, conducting powder 10 parts and 55 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Embodiment 4
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 65 parts, conducting powder 9 parts and 40 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Embodiment 5
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 55 parts, conducting powder 8 parts and 42 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Embodiment 6
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 45 parts, conducting powder 6 parts and 30 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Embodiment 7
The difference of the present embodiment and embodiment 1 is, the moiety of the waterproof ventilated membrane of the present embodiment comprises: four fluorine emulsions 75 parts, conducting powder 7 parts and 35 parts, silicon rubber, and wherein, the mass concentration of described four fluorine emulsions is 60%.
Waterproof ventilated membrane obtained to embodiment 1-7 is below tested as follows: tensile strength (ASTMD-638), elongation at break (ASTMD-638), water-repellancy (AATCC-127), ventilation property (GB1038), wherein, the waterproof ventilated membrane that comparative example is known in the art, its comprising property of moiety charcoal, acetylene black, pore-forming material and tackiness agent ptfe emulsion, soup compound is mixed and made into second alcohol and water, control temperature 100 DEG C in rubber mixing machine, roll extrusion film forming repeatedly, controlling diaphragm thickness is 300 μm, and detected result is as shown in table 1.
Table 1 waterproof ventilated membrane performance test results
Known by table 1, the tensile strength of embodiment 1-7 and elongation at break are all better than comparative example 1, especially embodiment 1, illustrate that waterproof ventilated membrane provided by the invention has more excellent mechanical property than existing waterproof ventilated membrane.
Known by table 1, the water-repellancy of embodiment 1-7 and ventilation property (air) are all better than comparative example 1, and especially embodiment 1 illustrates that waterproof ventilated membrane provided by the invention has more excellent water-repellancy and ventilation property than existing waterproof ventilated membrane.
Be described in detail specific embodiments of the invention above, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (6)
1. the preparation method of a waterproof ventilated membrane, according to mass parts meter, tetrafluoro emulsion compositions comprises: four fluorine emulsion 45-75 parts, conducting powder 6-12 part and silicon rubber 30-60 part, described conducting powder is one or more in metallic conduction powder, metal conductive oxide powder, waterproof ventilated membrane is made up of described tetrafluoro emulsion compositions, it is characterized in that, the mass concentration of described four fluorine emulsions is 60%; The thickness of described waterproof ventilated membrane is 100-500 μm; The preparation method of waterproof ventilated membrane, comprises the following steps:
Step 1, takes four fluorine emulsions, conducting powder and silicon rubber, mix and blend in proportion, adds dehydrated alcohol breakdown of emulsion simultaneously, and make material mixing even, wherein the mass ratio of four fluorine emulsions and ethanol is (45-75): (4-12);
Step 2, control temperature 800-100 DEG C in rubber mixing machine, roll extrusion film forming repeatedly, both.
2. preparation method according to claim 1, is characterized in that, described tetrafluoro emulsion compositions comprises: four fluorine emulsion 50-70 parts, conducting powder 7-10 part and silicon rubber 35-55 part.
3. preparation method according to claim 2, is characterized in that, described tetrafluoro emulsion compositions comprises: four fluorine emulsion 55-65 parts, conducting powder 8-9 part and silicon rubber 40-50 part.
4. preparation method according to claim 1, is characterized in that, in step 1, the mass ratio of four fluorine emulsions and ethanol is (45-75): (6-10).
5. preparation method according to claim 1, is characterized in that, also comprises pre-treatment step, by conducting powder and silicon rubber grinding refinement.
6. preparation method according to claim 1, is characterized in that, described rubber mixing machine is opening rubber mixing machine.
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| CN201410150762.XA CN103937134B (en) | 2014-04-15 | 2014-04-15 | Tetrafluoro emulsion compositions, waterproof ventilated membrane and preparation method thereof |
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| CN201410150762.XA CN103937134B (en) | 2014-04-15 | 2014-04-15 | Tetrafluoro emulsion compositions, waterproof ventilated membrane and preparation method thereof |
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| CN103937134A CN103937134A (en) | 2014-07-23 |
| CN103937134B true CN103937134B (en) | 2016-04-13 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6210789B1 (en) * | 1997-02-20 | 2001-04-03 | W. L. Gore & Associates, Inc. | Electrically conductive composite article |
| CN103278489A (en) * | 2013-05-31 | 2013-09-04 | 深圳市深安旭传感技术有限公司 | Fluorescent oxygen sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1283492C (en) * | 1985-11-13 | 1991-04-23 | Tyrone D. Mitchell | Interpenetrating polymeric networks comprising polytetrafluoroethylene and polysiloxane |
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2014
- 2014-04-15 CN CN201410150762.XA patent/CN103937134B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6210789B1 (en) * | 1997-02-20 | 2001-04-03 | W. L. Gore & Associates, Inc. | Electrically conductive composite article |
| CN103278489A (en) * | 2013-05-31 | 2013-09-04 | 深圳市深安旭传感技术有限公司 | Fluorescent oxygen sensor |
Non-Patent Citations (1)
| Title |
|---|
| 聚四氟乙烯对空气电极防水透气膜性能的影响;李玉杰等;《河北工业大学学报》;20041231;第33卷(第6期);第41页1.1空气电极的制备以及第42页表1 * |
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Inventor after: Chen Liyong Inventor after: Wu Shixing Inventor after: Zeng Fusheng Inventor before: Zeng Fusheng |
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Effective date of registration: 20200331 Address after: 523000 B2 302, Liaobu Productivity Promotion Centre, 10 Liao Tea Road, Liaobu Town, Dongguan, Guangdong. Patentee after: DONGGUAN KANGZHONG ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 523000, No. 13 West Longquan, Liaobu community, Liaobu Town, Dongguan, Guangdong Patentee before: DONGGUAN FANGKANG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230602 Address after: 341001 Room 1, Floor 4, Building 9, Phase I Standard Plant (Jinling Science Park), Ganzhou Economic and Technological Development Zone, Ganzhou City, Jiangxi Province Patentee after: Jiangxi Xiaoxiaren Oxygen Supply Equipment Co.,Ltd. Address before: 523000 Room 302, building B2, Liaobu Productivity Promotion Center, No. 10, liaocha Road, liangbian village, Liaobu Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN KANGZHONG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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