CN111411385A - Preparation method of self-supporting latex film - Google Patents
Preparation method of self-supporting latex film Download PDFInfo
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- CN111411385A CN111411385A CN201910010331.6A CN201910010331A CN111411385A CN 111411385 A CN111411385 A CN 111411385A CN 201910010331 A CN201910010331 A CN 201910010331A CN 111411385 A CN111411385 A CN 111411385A
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- latex film
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/02—Electrolytic coating other than with metals with organic materials
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Abstract
The invention relates to a preparation method of a self-supporting latex film, which belongs to the technical field of film preparation, wherein the latex film is prepared by an electrochemical method.
Description
Technical Field
The invention belongs to the technical field of membrane preparation, and particularly relates to a preparation method of a self-supporting latex membrane.
Background
The self-supporting film has both macroscopic size and molecular-scale thickness, and combines the characteristics of macroscopic materials and single molecules; because the support of the substrate is eliminated, the application field of the catalyst is greatly expanded, and the catalyst has wide potential application in the fields of sensors, brakes, nano devices and catalysts, thereby arousing great interest. The current method for preparing the latex film adopts the steps of directly pouring filtered latex on float glass, uniformly scraping the latex by using a scraper, and controlling other conditions to finally obtain a layer of latex film, but the method has the defects of high cost of required equipment and difficulty in controlling conditions, so that the method for preparing the latex film is simple to operate, low in cost, easy in obtaining of raw materials, rapid in reaction, green and efficient, and has great significance.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a preparation method of a self-supporting latex film.
The 906 emulsion was purchased from Nippon Sihui chemical Co., Ltd, and had a pH of 4.0-7.0, a viscosity of 300-1000 mps, and a solid content of 52.0. + -. 2.0.
The preparation method of the self-supporting latex film provided by the invention comprises the following steps and conditions:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum, iron and zinc electrodes as a cathode and an anode respectively to be connected with a power supply, putting the two metal electrodes into 906 emulsion, electrifying for 30 s-2 h, and regulating the voltage to 5-12V, wherein the metal electrode connected with the anode of the power supply is coated with a layer of treated dialysis membrane;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness of the latex film ranges from 50um to 500 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness of the prepared self-supporting latex film is 50-500 um.
Has the advantages that: the preparation method has the advantages of simple preparation process, easily available raw materials, greatly shortened preparation time, low manufacturing cost, simple required equipment, green and environment-friendly production process, no environmental pollution and no harm to human bodies.
Detailed Description
The following examples are presented to further illustrate the practice and results of the invention and are not intended to limit the invention thereto.
Example 1 a method for preparing a self-supporting latex film, the steps and conditions for the preparation are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum and iron electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 30s, and regulating the voltage to 5V, wherein the metal electrode connected with the anode of the power supply is coated with a layer of treated dialysis membrane;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 50 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 50 um.
Example 2 a method for preparing a self-supporting latex film, the steps and conditions of preparation are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting iron and zinc electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 1h, and regulating the voltage to 8V, wherein a layer of treated dialysis membrane is wrapped on the metal electrode connected with the anode of the power supply;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 200 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 200 um.
Example 3 a method for preparing a self-supporting latex film, the steps and conditions for the preparation are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum and aluminum electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 2h, and regulating the voltage to 12V, wherein a layer of treated dialysis membrane is wrapped on the metal electrode connected with the anode of the power supply;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 500 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 500 um.
Claims (9)
1. The preparation method of the self-supporting latex film is characterized by comprising the following steps and conditions:
two kinds of emulsions are used, one is 906 emulsion, the other is PVAc emulsion, 906 emulsion is purchased from the market, and the PVAc emulsion is the self-made emulsion of the invention, and the specific method is as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum, iron and zinc electrodes as a cathode and an anode respectively to be connected with a power supply, putting the two metal electrodes into 906 emulsion, electrifying for 30 s-2 h, and regulating the voltage to 5-12V, wherein the metal electrode connected with the anode of the power supply is coated with a layer of treated dialysis membrane;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness of the latex film ranges from 50um to 500 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness of the prepared self-supporting latex film is 50-500 um.
2. The method of claim 1, wherein the steps and conditions are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum and iron electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 30s, and regulating the voltage to 5V, wherein the metal electrode connected with the anode of the power supply is coated with a layer of treated dialysis membrane;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 50 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 50 um.
3. The method of claim 1, wherein the steps and conditions are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting iron and zinc electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 1h, and regulating the voltage to 8V, wherein a layer of treated dialysis membrane is wrapped on the metal electrode connected with the anode of the power supply;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 200 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 200 um.
4. The method of claim 1, wherein the steps and conditions are as follows:
(1) treatment of dialysis membranes
At room temperature, a dialysis bag with a cut-off of 8000-: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use;
(2) preparation of latex film
At room temperature, selecting aluminum and aluminum electrodes as a cathode and an anode respectively to be connected with a power supply, placing the two metal electrodes into 906 emulsion, electrifying for 2h, and regulating the voltage to 12V, wherein a layer of treated dialysis membrane is wrapped on the metal electrode connected with the anode of the power supply;
(3) preparation of self-supporting latex film
The preparation of the self-supporting latex film has two methods:
a. taking out the metal electrode which is connected with the positive electrode of the power supply and is wrapped with the dialysis bag from the 906 emulsion, rinsing the metal electrode with a large amount of deionized water for 5min, carefully taking down the latex film attached to the surface of the dialysis film by using tweezers, wherein the thickness range of the latex film is 500 um;
b. soaking in deionized water for 3d, the latex film can fall off from the dialysis bag, and the self-supporting latex film can be prepared, wherein the thickness range of the prepared self-supporting latex film is 500 um.
5. The method of claim 1 wherein the dialysis bag with a cut-off of 8000- "14000 is placed in a mixture of deionized water and ethanol 1: 1, heating for 40min, cooling to room temperature, and washing with deionized water before use; .
6. The method of claim 1, wherein the aluminum, iron, and zinc electrodes are selected as cathode and anode respectively and connected to a power source.
7. The method of claim 1, wherein the two metal electrodes are placed in 906 the emulsion and energized for 30 s-2 h and the voltage is adjusted to 5-12V, and the metal electrode connected to the positive electrode of the power supply is covered with a treated dialysis membrane.
8. The method of claim 1, wherein the metal electrode connected to the positive electrode of the power supply and wrapped with the dialysis bag is taken out of the 906 emulsion, rinsed with a large amount of deionized water for 5min, and carefully removed with tweezers from the latex film attached to the surface of the dialysis film, wherein the thickness of the latex film is in the range of 50-500 um; .
9. The method of claim 1, wherein the latex film is soaked in deionized water for 3 days, and the latex film can be peeled off from the dialysis bag to prepare the self-supporting latex film, wherein the thickness of the prepared self-supporting latex film is 50-500 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910010331.6A CN111411385A (en) | 2019-01-07 | 2019-01-07 | Preparation method of self-supporting latex film |
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| CN201910010331.6A CN111411385A (en) | 2019-01-07 | 2019-01-07 | Preparation method of self-supporting latex film |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928871A (en) * | 2017-03-13 | 2017-07-07 | 长春理工大学 | A kind of preparation method of the layer assembly high molecular bonding film that can be used for one side bonding |
| CN108504302A (en) * | 2018-04-08 | 2018-09-07 | 长春理工大学 | A kind of high molecular bonding film with water-proof function |
| CN109137047A (en) * | 2018-09-06 | 2019-01-04 | 长春理工大学 | A method of in metal surface, electroluminescent deposition prepares latex film |
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- 2019-01-07 CN CN201910010331.6A patent/CN111411385A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928871A (en) * | 2017-03-13 | 2017-07-07 | 长春理工大学 | A kind of preparation method of the layer assembly high molecular bonding film that can be used for one side bonding |
| CN108504302A (en) * | 2018-04-08 | 2018-09-07 | 长春理工大学 | A kind of high molecular bonding film with water-proof function |
| CN109137047A (en) * | 2018-09-06 | 2019-01-04 | 长春理工大学 | A method of in metal surface, electroluminescent deposition prepares latex film |
Non-Patent Citations (1)
| Title |
|---|
| 李永吉 等主编: "《高等学校中药学类专业实验操作指南》", 31 May 2017, 北京：中国中医药出版社 * |
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Application publication date: 20200714 |