CN110567865A - Simple test method for fading resistance of pigment - Google Patents
Simple test method for fading resistance of pigment Download PDFInfo
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- CN110567865A CN110567865A CN201910823441.4A CN201910823441A CN110567865A CN 110567865 A CN110567865 A CN 110567865A CN 201910823441 A CN201910823441 A CN 201910823441A CN 110567865 A CN110567865 A CN 110567865A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
The invention relates to a simple test method for fading resistance of a colorant, which comprises the following steps: preparing a test dish, and sticking a double-sided adhesive tape in the middle of the bottom surface of the test dish; coating a pigment on the surface of a base material, and then cutting the base material into a sample to be tested, wherein the area of the sample is larger than the area of the bottom surface of a test dish; attaching the surface of the sample with the pigment upwards and the middle of the other surface to the double-sided adhesive tape on the bottom surface of the test dish, and putting the periphery of the sample on the side wall of the test dish to enable the middle of the sample to form a recess downwards; preparing a test solution, pouring the test solution into the recess, and enabling the recess part of the sample to be fully contacted with the test solution; and (3) standing the sample, and comparing the color difference between the part of the sample, which is in contact with the test solution, and other parts after a set time, so as to obtain the fading resistance of the pigment. The test method is simple and convenient to operate, and can visually display the influence of the test solvent on the pigment.
Description
Technical Field
The invention relates to the field of detection methods, in particular to a simple method for testing fading resistance of a colorant.
Background
In order to make the surface of the daily used fabrics such as leather, artificial leather, organic silicon, etc. more beautiful and more colorful, the surface of the fabrics is usually printed with different colors or patterns by using pigments. After printing, a fading test needs to be performed on the finished product to check the fading resistance of the colorant, so as to improve the formula of the colorant and the printing process, and ensure that the product can keep bright and beautiful color after being used for a long time.
the mode of wiping test solvent on the product surface is generally adopted in current test that fades, because test solvent self can volatilize, its influence to the product can reduce gradually along with the increase of time, consequently needs personnel to wipe the product repeatedly at an interval for a certain time to observe the state that fades of colouring material, this kind of test mode work load is big, and work efficiency is low.
Another way is to soak the whole product in the test solvent and observe the fading state of the colorant. However, this test method has limitations, on one hand, the test solvent is in contact with the substrate of the product while in contact with the colorant, which may affect the substrate of the product, and further affect the adhesion property of the colorant, resulting in inaccurate test results; on the other hand, this test lacks contrast, and the difference between the portion contacted with the test solvent and the portion not contacted with the test solvent cannot be visually recognized.
Disclosure of Invention
The invention aims to provide a simple test method for fading resistance of a coloring material, which is simple and convenient to operate and can intuitively display the influence of a test solvent on the coloring material.
A simple test method for the fading resistance of a colorant comprises the following steps: preparing a test dish, and sticking a double-sided adhesive tape in the middle of the bottom surface of the test dish; coating a pigment on the surface of a base material, and then cutting the base material into a sample to be tested, wherein the area of the sample is larger than the area of the bottom surface of a test dish; attaching the surface of the sample with the pigment upwards and the middle of the other surface to the double-sided adhesive tape on the bottom surface of the test dish, and putting the periphery of the sample on the side wall of the test dish to enable the middle of the sample to form a recess downwards; preparing a test solution, pouring the test solution into the recess, and enabling the recess part of the sample to be fully contacted with the test solution; and (3) standing the sample, and comparing the color difference between the part of the sample, which is in contact with the test solution, and other parts after a set time, so as to obtain the fading resistance of the pigment.
furthermore, the bottom surface of the test dish is circular, the sample is square, and the ratio of the side length of the sample to the diameter of the bottom surface of the test dish is 1.2 ~ 1.5.
Further, the substrate is a flexible and waterproof substrate.
Further, the test solution is a sodium hypochlorite solution with a concentration of 2%.
Further, the colorant includes ink and color paste.
Further, the set time is 24 hours.
Compared with the prior art, the invention has the beneficial effects that: paste the sample on the test ware to make the centre of sample form the cave downwards, make test solvent concentrate in the cave, test solvent only contacts with the sample coating has the one side of colouring material, thereby avoids test solvent to influence the substrate of sample, makes the test result more accurate. The recessed portion of the sample in contact with the test solvent is contrasted with the portion of the sample not in contact with the test solvent at the periphery, so that the tester can visually see the influence of the test solvent on the sample colorant. The test method of the invention is simple and convenient to operate, and can effectively improve the test efficiency.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problems of complex operation and unreasonable test design of the conventional pigment fading test, the embodiment of the invention provides a simple test method for the fading resistance of a pigment, which comprises the following steps:
Preparing a test dish, and sticking a double-sided adhesive tape in the middle of the bottom surface of the test dish. In this embodiment, a transparent test dish with a circular bottom surface is preferably used, a vertical upward sidewall is formed around the test dish, and a commercially available double-sided adhesive tape may be used.
And coating the pigment on the surface of the substrate, and cutting the substrate into samples to be tested, wherein the area of the samples is larger than the area of the bottom surface of the test dish. Wherein, the pigment includes ink and color paste, which are coated by the existing coating process, and the substrate is flexible waterproof material, such as leather, artificial leather, and organic silicon, but not limited thereto.
the method comprises the steps of enabling one side of a sample with a pigment to face upwards, enabling the middle of the other side of the sample to be attached to a double ~ sided adhesive tape on the bottom surface of a test dish, and enabling the periphery of the sample to be lapped on the side wall of the test dish to enable the middle of the sample to be downwards sunken, wherein the sample is square, and the ratio of the side length of the sample to the diameter of the bottom surface of the test dish is 1.2 ~ 1.5, so that the periphery of the sample can be enabled to be upwards bent along the side wall of the test dish, and the middle of the.
And preparing a test solution, and pouring the test solution into the recess to ensure that the recess part of the sample is fully contacted with the test solution. In this embodiment, the test solution is a 2% sodium hypochlorite solution, and in other embodiments, sodium hypochlorite solutions of different concentrations may be used, or other solutions may be used. Due to the water impermeability of the sample substrate, the test solution collects in the depression formed by the sample and is in sufficient contact with the colorant in the depressed portion.
And (3) standing the sample, and comparing the color difference between the part of the sample, which is in contact with the test solution, and other parts after a set time, so as to obtain the fading resistance of the pigment. In this embodiment, the set time is observed once every 24 hours, and in other embodiments, the time can be flexibly set as required. Since the test solution is always in contact with and reacts with the depressed portions, the peripheral portions of the sample that are not in contact with the test solution are clearly contrasted with the depressed portions, so that the operator can visually recognize the difference. Specifically, the fading resistance of the colorant can be judged by visual observation or comparison with colorimetric paper after multiple times of observation and recording.
It should be noted that, in other embodiments, a plurality of test dishes may be provided, each test dish is used to place a sample cut from the same finished product, and test solutions with different concentrations are respectively configured for each sample, so as to facilitate observation of the influence of the test solutions with different concentrations on the same colorant.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (6)
1. A simple test method for the fading resistance of a colorant is characterized by comprising the following steps:
Preparing a test dish, and sticking a double-sided adhesive tape in the middle of the bottom surface of the test dish;
Coating a pigment on the surface of a base material, and then cutting the base material into a sample to be tested, wherein the area of the sample is larger than the area of the bottom surface of a test dish;
attaching the surface of the sample with the pigment upwards and the middle of the other surface to the double-sided adhesive tape on the bottom surface of the test dish, and putting the periphery of the sample on the side wall of the test dish to enable the middle of the sample to form a recess downwards;
preparing a test solution, pouring the test solution into the recess, and enabling the recess part of the sample to be fully contacted with the test solution;
And (3) standing the sample, and comparing the color difference between the part of the sample, which is in contact with the test solution, and other parts after a set time, so as to obtain the fading resistance of the pigment.
2. the method for easily testing discoloration resistance of a colorant according ~ claim 1, wherein said test dish has a circular bottom surface, said sample has a square bottom surface, and the ratio of the side length of said sample ~ the diameter of the bottom surface of said test dish is 1.2 ~ 1.5.
3. The easy color fade resistance test method of claim 1, wherein the substrate is a flexible water impermeable substrate.
4. The method for easily testing the discoloration resistance of a colorant according to claim 1, wherein said test solution is a sodium hypochlorite solution having a concentration of 2%.
5. The method for easily testing fading resistance of colorants according to claim 1, wherein said colorants comprise inks and color pastes.
6. the method for easily testing discoloration resistance of a colorant according to claim 1, wherein said set time is 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910823441.4A CN110567865B (en) | 2019-09-02 | 2019-09-02 | Simple test method for fading resistance of pigment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910823441.4A CN110567865B (en) | 2019-09-02 | 2019-09-02 | Simple test method for fading resistance of pigment |
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| CN110567865A true CN110567865A (en) | 2019-12-13 |
| CN110567865B CN110567865B (en) | 2021-11-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136937A (en) * | 1979-04-13 | 1980-10-25 | Dainippon Toryo Co Ltd | Testing method of hydrogen-sulfide resisting property of paint film |
| JP2000336331A (en) * | 1999-05-31 | 2000-12-05 | Sekisui Chem Co Ltd | Curable type tacky adhesive tape |
| CN101825556A (en) * | 2009-03-04 | 2010-09-08 | 卡发隆公司 | The performance test methods of cooker |
| JP2015179049A (en) * | 2014-03-19 | 2015-10-08 | アイデイシー株式会社 | Test method of synthetic leather immersing in sodium hypochlorite aqueous solution |
| CN106404648A (en) * | 2016-08-31 | 2017-02-15 | 廊坊立邦涂料有限公司 | Detection method for acid resistance of paint |
-
2019
- 2019-09-02 CN CN201910823441.4A patent/CN110567865B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136937A (en) * | 1979-04-13 | 1980-10-25 | Dainippon Toryo Co Ltd | Testing method of hydrogen-sulfide resisting property of paint film |
| JP2000336331A (en) * | 1999-05-31 | 2000-12-05 | Sekisui Chem Co Ltd | Curable type tacky adhesive tape |
| CN101825556A (en) * | 2009-03-04 | 2010-09-08 | 卡发隆公司 | The performance test methods of cooker |
| JP2015179049A (en) * | 2014-03-19 | 2015-10-08 | アイデイシー株式会社 | Test method of synthetic leather immersing in sodium hypochlorite aqueous solution |
| CN106404648A (en) * | 2016-08-31 | 2017-02-15 | 廊坊立邦涂料有限公司 | Detection method for acid resistance of paint |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局: "《中华人民共和国国家标准》", 28 March 2009 * |
| 英国皮革协会: "皮革分析检验方法（连载之三） 第二部分 皮革耐色牢度SLF", 《皮革科技动态》 * |
| 英国皮革协会: "皮革分析检验方法（连载之四）", 《皮革科技动态》 * |
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