CN112051204A - Method for detecting filtering cleanliness of water-based colored paint - Google Patents
Method for detecting filtering cleanliness of water-based colored paint Download PDFInfo
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- CN112051204A CN112051204A CN202010816218.XA CN202010816218A CN112051204A CN 112051204 A CN112051204 A CN 112051204A CN 202010816218 A CN202010816218 A CN 202010816218A CN 112051204 A CN112051204 A CN 112051204A
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- 239000003973 paint Substances 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000003749 cleanliness Effects 0.000 title claims abstract description 37
- 238000001914 filtration Methods 0.000 title claims abstract description 29
- 238000005406 washing Methods 0.000 claims abstract description 17
- 239000003085 diluting agent Substances 0.000 claims abstract description 13
- 238000011049 filling Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000010790 dilution Methods 0.000 claims abstract description 4
- 239000012895 dilution Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000012459 cleaning agent Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 9
- 239000000835 fiber Substances 0.000 abstract description 6
- 210000004209 hair Anatomy 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 239000000123 paper Substances 0.000 description 7
- 239000003599 detergent Substances 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/10—Investigating individual particles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
-
- G01N2015/1024—
Abstract
The invention belongs to the technical field of material detection, and relates to a method for detecting the filtering cleanliness of water-based colored paint; the method comprises the following steps: step one, filtering the diluent by using a filter silk and filling the diluent into a washing bottle; step two, filling the water-based colored paint to be detected into a clean container, pouring the diluent in the step one into the container for dilution, and uniformly stirring the mixture; selecting a corresponding proper filtering silk aiming at the solid paint, the pearlescent paint or the metallic paint to obtain a funnel-shaped filtering silk; step four, slowly pouring the diluted water-based colored paint in the step two into the funnel-shaped filter silk, wherein the smaller the area of the filter silk covered by the water-based colored paint is, the better the filter silk is; immediately washing the outer surface of the silk from top to bottom by using a washing bottle after the water-based colored paint is poured out, so that the whole outer surface is uniformly washed; and fifthly, absorbing the redundant cleaning agent from the outside by using filter paper, and hanging and airing. The method is simple to operate, and can visually evaluate the residual states of the particles and the fiber hairs in the water-based colored paint.
Description
Technical Field
The invention belongs to the technical field of material detection, and relates to a method for detecting the filtering cleanliness of water-based colored paint.
Background
Before the automobile coating enters a host factory for spraying, a series of factory-in detection needs to be carried out on the coating to control the batch state of the coating. Particles or fibers remained in the production process of the coating have influence on the spraying effect of the vehicle body, for example, excessive residual impurities or large aggregation can form particles on the surface of a paint film after spraying and drying, and the appearance state is influenced. We define the level of amount of residual impurities in the coating as cleanliness. It is desirable to define a method for determining cleanliness for evaluating incoming coating lot status.
The patent document No. CN100510691C provides a diesel oil detergency testing method and its equipment, in which the diesel oil is flowed onto a deposit collector whose working surface is made into an inclined plane, under the action of heater the deposit is formed on the working surface of the deposit collector after a certain period of time, and the cleaning degree of diesel oil can be distinguished by quantitatively analyzing the weight of deposit. The method and the device can better simulate the diesel nozzle cleanliness XUD-9 bench test method (European standard CEC F-23-A-01), can save expensive engine bench test cost and time, are simple and convenient to operate, can be carried out in a common laboratory, and have an intuitive test process. The detergent can detect the detergency of the diesel detergent, can detect the detergency of the diesel, is suitable for detergent formula screening and production link sampling monitoring of a diesel detergent production unit, and is also suitable for the detergent detection of commercially available diesel by a technical supervision and management department.
The document is a diesel oil cleanliness detection method, the cleanliness degree of diesel oil is calibrated by heating, drying and collecting sediments, and a corresponding simple experiment bench is included. The invention relates to a method for detecting the filtering cleanliness of water-based colored paint, which has different detection objects and properties and different method principles and does not belong to the same detection method.
Patent document CN110487687A relates to a method for detecting the cleanliness of titanium dioxide in water-based paint, which comprises the following steps: a. uniformly dispersing cellulose, an auxiliary agent and water, and adjusting the pH value to 8.5-9.5 to obtain cellulose pulp; b. adding titanium dioxide into the cellulose pulp, and uniformly dispersing to obtain water-based paint color paste; c. coating the water-based paint color paste on the paperboard by using an automatic film coating instrument to prepare a sample plate, and drying; d. and observing the number of the coarse particles on the sample plate under a D65 standard light source, and comparing the ratio of the coarse particles on a unit area with a standard sample to judge whether the product is qualified. The detection method can more intuitively and objectively represent the cleanliness of the titanium dioxide in the coating system, and provides an important detection method for the market.
In order to detect the cleanliness of titanium dioxide in water-based paint, the document adopts a method for observing the number and the proportion of coarse particles after drying. The invention aims at the water-based colored paint raw paint, belongs to a method for detecting the filtering cleanliness, has different detection objects and different method principles, and does not belong to the same detection method.
The publication number is CN107966449A patent document, and discloses an oil cleanliness detector and a detection method thereof, the detector comprises an oil sampling unit, a high-power microscope, an image recognition unit, a data processor, a data storage and communication module and a high-precision digital display screen, wherein the oil sampling unit collects sample oil according to a standard, the data processor analyzes collected information to obtain the cleanliness grade of the sampled oil, and automatically compares standard oil cleanliness grade pictures stored in the detector according to the obtained cleanliness grade, and transmits the standard oil cleanliness grade pictures to the high-precision digital display screen for comparison and display, and the type, size and quantity of the oil are obtained by directly detecting particulate matters in an oil sample, so that the data intuition is enhanced, the accuracy of a detection result is improved, the detection mode is simple and easy to operate, and the detector is suitable for on-site rapid large-scale operation.
The invention relates to a cleanliness detector for oil and a detection method thereof, which mainly comprise a detection instrument, and the principle of the method is a method for detecting particles at high magnification.
Disclosure of Invention
The invention aims to solve the technical problem that the prior art lacks a cleanliness control method for water-based colored paint, and provides a method for detecting the filtration cleanliness of water-based colored paint.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:
the invention relates to a method for detecting the filtering cleanliness of water-based colored paint for automobile coating, which can improve the particle state on the surface of an automobile body by controlling the cleanliness.
The object of the present invention is to define a method for detecting the residual state (cleanliness) of particles or fibres in aqueous paints.
A method for detecting the filtering cleanliness of water-based colored paint comprises the following steps:
step one, filtering the diluent by using a filter silk and filling the diluent into a washing bottle;
step two, filling the water-based colored paint to be detected into a clean container, pouring the diluent in the step one into the container for dilution, and uniformly stirring the mixture;
selecting a corresponding proper filtering silk aiming at the solid paint, the pearlescent paint or the metallic paint to obtain a funnel-shaped filtering silk;
step four, slowly pouring the diluted water-based colored paint in the step two into the funnel-shaped filter silk, wherein the smaller the area of the filter silk covered by the water-based colored paint is, the better the filter silk is;
immediately washing the outer surface of the silk from top to bottom by using a washing bottle after the water-based colored paint is poured out, so that the whole outer surface is uniformly washed;
and fifthly, absorbing the redundant cleaning agent from the outside by using filter paper, and hanging and airing.
In the step one, the filter silk is 500-mesh filter silk.
And in the second step, 120g of the water-based colored paint to be detected is taken.
In step two, 60g of diluent is poured in.
The diluent is deionized water.
In the third step, the solid color paint is 300-mesh silk.
In the third step, 200-mesh silk is selected as the pearlescent paint or the metallic paint.
The folding mode of the funnel-shaped filter silk in the step three is as follows:
and folding the square silk twice to obtain a laminated square silk with the side length of 1/4, and poking one layer of the square silk to obtain the funnel-shaped silk.
And in the fourth step, the outer surface of the silk is washed from top to bottom by a washing bottle, the washing is continued until the residues are not reduced any more, the inner layer of the silk is checked after the washing is finished, and if more residues or the residues are gathered into plaques, the silk needs to be washed again and the plaques are washed away.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the method is simple to operate, and the residual states of the particles and the fiber hairs in the water-based colored paint can be visually evaluated.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a picture of a sample of a filter paper obtained by filtering an aqueous paint;
Detailed Description
A method for detecting the filtering cleanliness of water-based colored paint comprises the following steps:
1. deionized water was filtered through a 25um (500 mesh) filter cloth and placed in a wash bottle.
2. 120g of water-based colored paint is put into a clean container, 60g of filtered deionized water is poured into the container for dilution, and the mixture is uniformly stirred.
3. Selecting proper filter silk: the solid color paint is made of 45um (300 meshes) filter silk. The pearlescent paint and the metallic paint are made of 75um (200 mesh) filter silk.
The square filter tissue was folded in half twice to obtain a laminated square filter tissue with side length of 1/4. And (4) poking one layer of the filter paper to obtain the funnel-shaped filter paper.
4. And fixing the edge of one side of the four layers by fingers, aiming at the pointed bottom of the funnel-shaped filter silk, slowly pouring the diluted colored paint into the pointed bottom part of the funnel-shaped filter silk, and paying attention to the fact that the smaller the area of the colored paint covering the filter silk, the better.
After pouring, the outer surface of the filter silk is washed from top to bottom by a wash bottle immediately, the filter silk is folded into four layers, the color paint can remain in the middle after flowing through, and is washed by a nozzle of the wash bottle opposite to the outermost layer, so that the color paint stuck on the filter silk can be washed away, and the whole outer surface is uniformly washed.
The washing of the fold part is noticed, and the washing dead angle is avoided.
Note that: the flushing is continued until the residue is no longer reduced, after which the inner layer of the filter sock is inspected, and if there is more residue or plaque accumulates, a second flushing is required and the plaque is attempted to be flushed away.
5. Excess deionized water was sucked off from the outside with filter paper, hung and dried.
Do not want to be spread out and dried in the air.
6. The dried filter paper was sealed with a film or a glass clip, and a circle (R ═ 2cm) was drawn through the center of the filter paper with the clip interposed therebetween, and the area inside the circle was evaluated.
7. The particles or fibers remaining on the filter silk were counted by visual observation with a microscope.
And judging the cleanliness level of the water-based colored paint according to the number of the particles or the fibers.
The final judgment standard is different for different water-based colored paints, the qualified range is defined according to the actual situation of field application, and the judgment is carried out according to the number of the fiber hairs of the granulation machine remained on the filter silk.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
And those not described in detail in this specification are well within the skill of those in the art.
Claims (9)
1. The method for detecting the filtering cleanliness of the water-based colored paint is characterized by comprising the following steps of:
step one, filtering the diluent by using a filter silk and filling the diluent into a washing bottle;
step two, filling the water-based colored paint to be detected into a clean container, pouring the diluent in the step one into the container for dilution, and uniformly stirring the mixture;
selecting a corresponding proper filtering silk aiming at the solid paint, the pearlescent paint or the metallic paint to obtain a funnel-shaped filtering silk;
step four, slowly pouring the diluted water-based colored paint in the step two into the funnel-shaped filter silk, wherein the smaller the area of the filter silk covered by the water-based colored paint is, the better the filter silk is; immediately washing the outer surface of the silk from top to bottom by using a washing bottle after the water-based colored paint is poured out, so that the whole outer surface is uniformly washed;
and fifthly, absorbing the redundant cleaning agent from the outside by using filter paper, and hanging and airing.
2. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
in the step one, the filter silk is 500-mesh filter silk.
3. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
and in the second step, 120g of the water-based colored paint to be detected is taken.
4. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
in step two, 60g of diluent is poured in.
5. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
the diluent is deionized water.
6. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
in the third step, the solid color paint is 300-mesh silk.
7. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
in the third step, 200-mesh silk is selected as the pearlescent paint or the metallic paint.
8. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
the folding mode of the funnel-shaped filter silk in the step three is as follows:
and folding the square silk twice to obtain a laminated square silk with the side length of 1/4, and poking one layer of the square silk to obtain the funnel-shaped silk.
9. The method for detecting the filtering cleanliness of the water-based paint according to claim 1, wherein the method comprises the following steps:
and in the fourth step, the outer surface of the silk is washed from top to bottom by a washing bottle, the washing is continued until the residues are not reduced any more, the inner layer of the silk is checked after the washing is finished, and if more residues or the residues are gathered into plaques, the silk needs to be washed again and the plaques are washed away.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010816218.XA CN112051204A (en) | 2020-08-14 | 2020-08-14 | Method for detecting filtering cleanliness of water-based colored paint |
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| CN202010816218.XA CN112051204A (en) | 2020-08-14 | 2020-08-14 | Method for detecting filtering cleanliness of water-based colored paint |
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| CN112051204A true CN112051204A (en) | 2020-12-08 |
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| CN202010816218.XA Pending CN112051204A (en) | 2020-08-14 | 2020-08-14 | Method for detecting filtering cleanliness of water-based colored paint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684149A (en) * | 2021-01-06 | 2021-04-20 | 深圳雅联新材料有限公司 | Intelligent detection method for water-based colored paint filtering cleanliness |
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Application publication date: 20201208 |