CN217981490U - Test device for evaluating tear defect of latex paint in Huinan - Google Patents
Test device for evaluating tear defect of latex paint in Huinan Download PDFInfo
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- CN217981490U CN217981490U CN202222065137.8U CN202222065137U CN217981490U CN 217981490 U CN217981490 U CN 217981490U CN 202222065137 U CN202222065137 U CN 202222065137U CN 217981490 U CN217981490 U CN 217981490U
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Abstract
The utility model relates to a test device of aassessment return south emulsion paint tear mark disadvantage, including first container, second container, lid, support column, transparent cover, at least one cushion and at least one metal sheet that is used for coating the emulsion paint that awaits measuring. The utility model discloses an overcome the current market only test coating anti-condensation performance's device, and do not have the device that can simulate and test the tear trace defect condition that emulsion paint appears in the south return, and still there is the high accuracy instrument cooperation that needs to be expensive, the operation is complicated, it is long consuming time, the result is difficult for directly perceivedly judging, be unfavorable for shortcoming such as using widely, through first container and the second container of folding the establishment, and the fixed metal sheet that has the emulsion paint that awaits measuring of scribbling that hugs closely on first container periphery wall of activity, can simulate and test the tear trace defect condition that emulsion paint appears in the south return, have and need not expensive high accuracy instrument cooperation, easy operation, consuming time is short, do benefit to the advantage of using widely.
Description
Technical Field
The utility model relates to a test device for evaluating defects of tear stains of latex paint in Return to south, which is applied to the field of detection of defects of tear stains of latex paint in Return to south.
Background
The phenomenon that the temperature begins to warm up and the humidity rises violently in spring every year is a common weather phenomenon in south China. The humidity of the air in the south-returning day is close to saturation, and when the humid warm air meets the cold wall, dew is easy to form on the wall, and the phenomenon of moisture regain is easy to occur. Unfortunately, dew on the wall in the southbound region often results in a varnish film of latex paint applied to the wall surface having a shiny tear or even a viscous oily material, thereby affecting the aesthetics of the wall. Therefore, in order to conveniently evaluate the severity of tear defect of the latex paint in the south-returning day, the development of a testing device capable of evaluating the tear defect of the latex paint in the south-returning day is of great significance.
The prior art only has some devices for testing the anti-condensation performance of the coating. For example, application No. CN201210194564.4 discloses a paint anti-condensation performance test system and a test method, and the test system comprises a temperature and humidity control bin, a circulating water bath, a paint carrier, a condensation collector, an electronic balance, a calculator, and a connecting pipeline and a data line. Application number CN201420131725.X discloses a paint anti-condensation performance testing device, which comprises a low-temperature medium circulation box, a constant-temperature and constant-humidity chamber, a low-temperature medium input pipe and a low-temperature medium output pipe. However, these disclosed techniques can only be used to measure the anti-condensation performance of the paint, and are difficult to be used to simulate and test the tear defect of the latex paint in the south-bound day. In addition, these testing devices and detection technical means need to be matched with expensive high-precision instruments, and the defects of complex operation, long time consumption, difficult visual judgment of results, inconvenience for popularization and use and the like exist.
Therefore, it is necessary to provide a testing device for simulating and testing the tear defect of the latex paint in southwestern, which does not need expensive high-precision instruments, is simple to operate, consumes short time, has easy visual determination of the result, and is beneficial to popularization and use.
SUMMERY OF THE UTILITY MODEL
In order to overcome the device that only test coating anti-condensation performance in the existing market, and do not have the device that can simulate and test the tear trace disadvantage condition that emulsion paint appears in the backnoon, and still there is the high-precision instrument cooperation that needs to be expensive, and the operation is complicated, consuming time long, the difficult visual judgement of result, be unfavorable for shortcoming such as using widely, the utility model provides a test device of aassessment backnoon emulsion paint tear trace disadvantage, through first container and the second container of overlapping to and the activity is fixed hugs closely the sheetmetal that is used for coating the emulsion paint that awaits measuring on first container periphery wall, can simulate and test the tear trace disadvantage condition that emulsion paint appears in the backnoon, have need not expensive high-precision instrument cooperation, easy operation, consuming time short, the easy visual judgement of result, do benefit to use widely advantage, and can parallel test at least 4 emulsion paint samples simultaneously, efficiency is high to can ensure the contrast nature of parallel experiment.
The technical scheme of the utility model as follows:
a testing device for evaluating tear mark defects of latex paint in Huinan province comprises a first container, a second container, a cover, a supporting column, a transparent cover, at least one cushion block and at least one metal sheet for coating the latex paint to be tested, wherein the first container and the second container are both hollow sealed containers with openings at the tops, the first container is a container made of heat conduction materials and used for containing substances at the temperature of-2 ℃, and the second container is a container used for containing water at the temperature of 20-30 ℃; the second container is placed on the support, the first container is erected above the middle part of the second container at intervals through the support columns, and openings of the first container and the second container face upwards; the cover is arranged at the opening of the first container and can completely close the opening;
the upper part of each metal sheet is fixedly and tightly attached to the peripheral wall of the first container, and the surface coated with the emulsion paint to be detected faces outwards; the bottom of each metal sheet extends downwards out of the bottom wall of the first container for a certain distance, and the area of the metal sheet extending out of the bottom wall of the first container is 40-60% of the total area of the metal sheet; the height of the supporting column is 5-10 cm greater than the sum of the water depth in the second container and the maximum length of the metal sheet extending out of the bottom wall of the first container; the vertical distance from the peripheral wall of the first container to the corresponding side wall of the inner cavity of the second container is greater than the thickness of the metal sheet attached to the peripheral wall of the first container;
the transparent cover is a hollow sealed container with an opening at the bottom, the transparent cover is arranged above the support and covers the first container, the second container, the metal sheet and the cover, and the cushion block is arranged between the bottom of the transparent cover and the support, so that the air inside and outside the transparent cover can circulate.
The method for using the testing device for evaluating the tear defect of the retro-south emulsion paint mainly comprises the following steps of:
the method comprises the following steps: uniformly coating the emulsion paint to be detected on one surface of a metal sheet once by using a wire bar coater with the specification of 80-120, drying the metal sheet for 2-4 hours at the temperature of 20-30 ℃, then placing the metal sheet in a drying oven with the temperature of 45-55 ℃ for drying for 4-6 hours, and finally taking out and cooling to 20-30 ℃;
step two: filling a substance with the temperature of-2 ℃ into the first container, enabling the volume of the substance to account for 80-100% of the volume of the inner cavity of the first container, and then covering a cover to close the opening of the first container; filling water with the temperature of 20-30 ℃ into the second container, wherein the volume of the water accounts for 20-80% of the volume of the inner cavity of the second container;
step three: closely attaching and fixing the upper part of the metal sheet treated in the step one to the outer peripheral wall of a first container by using an adhesive tape, enabling one side of the metal sheet coated with the emulsion paint to be detected to face outwards, enabling the bottom of the metal sheet to extend out of the bottom wall of the first container for a certain distance, enabling the area of the metal sheet extending out of the bottom wall of the first container to be 40-60% of the total area of the metal sheet, finally covering a transparent cover outside the first container, the second container, a cover and the metal sheet, and supporting the transparent cover by using a cushion block to enable air inside and outside the transparent cover to circulate;
step four: when the metal sheet clings to the upper part of the peripheral wall of the first container to form water drops, and the water drops flow to the lower part of the metal sheet which is not clinging to the peripheral wall of the first container, immediately taking off the metal sheet, and hanging the metal sheet in an environment with the air pressure of 100-102 kPa, the temperature of 20-30 ℃ and the relative humidity of 30-70 percent for natural drying for 12-24 hours;
step five: the precipitation amount of oily precipitates on the surface of the latex paint film coated on the metal sheet is visually observed to judge the grade of the tear defect of the latex paint in south China, and the specific evaluation standard of the tear defect grade of the latex paint in south China is as follows:
level 0: no visible oily precipitate;
level 1: very slight oily precipitates were visible;
stage 2: slightly visible oily precipitate was slightly more;
and 3, stage: an oily precipitate was clearly visible;
and 4, stage 4: oily precipitates were very clearly visible.
The utility model provides an aassessment return south sky emulsion paint tear mark disadvantage's testing arrangement is through the first container and the second container of establishing of folding to and the activity is fixed hugs closely the metal sheet that has the emulsion paint that awaits measuring on first container periphery wall, can simulate and test the tear mark disadvantage condition that the emulsion paint appears in return south, have and need not expensive high accuracy instrument cooperation, and easy operation, consuming time is short, the easy direct-viewing judgement of result, do benefit to the advantage of using widely, and can parallel test at least 4 emulsion paint samples simultaneously, and the efficiency of software testing is high, and can ensure the contrast nature of parallel experiment. The purpose of a first container for containing substances at-2 ℃ in the test device for the tear mark defect of the latex paint in the Hui-Nantian is to simulate an ice-cold wall surface, the purpose of a second container for containing water at 20-30 ℃ is to simulate a high-humidity environment, the purpose of a transparent cover is to maintain the relative high-humidity environment in the device, the purpose of a cushion block is to promote the air circulation inside and outside the device to form warm air flow, a metal sheet is used as a carrier of the latex paint film, the temperature of the latex paint film is quickly reduced to be consistent with the temperature of low-temperature substances in the first container by utilizing the good heat conduction characteristic of metal, a cover can prevent the warm air flow in the device from being influenced, the temperature of the low-temperature substances contained in the first container can be kept for a long time, and the bottom of a support column can prevent the metal sheet from being immersed into the water contained in the second container.
The first container is a container for containing an ice-water mixture.
The temperature of the ice-water mixture is preferably 0 ℃, and the ice-water mixture is easy to obtain and low in cost.
The thickness of the metal sheet is 1-2 mm, and the thickness of the side wall of the first container is 2-5 mm.
The preferred metal sheet and the first container ensure both their strength and good thermal conductivity between them.
The support column top is connected in first container bottom outer wall central authorities, and the bottom is connected in second container inner chamber diapire central authorities.
The design of preferred support column position makes when using to paste and establish the sheetmetal of simulating the time of south on each lateral wall of first container, and the test effect is better.
The metal sheet is attached to the outer peripheral wall of the first container through an adhesive tape.
The adhesive tape is attached to one surface of the metal sheet coated with the emulsion paint and the outer side wall of the first container, so that the method is simple and convenient, and the test result is not influenced.
The cushion quantity is 4, and each cushion evenly spaced sets up the bottom at transparent cover.
The optimized quantity and positions of the cushion blocks can save cost and obtain the optimal air circulation effect.
The first container, the second container, the cover, the support column, the transparent cover and the cushion block are respectively a plastic first container, a plastic second container, a plastic cover, a plastic support column, a plastic transparent cover and a plastic cushion block.
The first container, the second container, the cover, the supporting column, the transparent cover and the cushion block are preferably made of plastic materials, so that the cost is low and the device is light.
The metal sheet is a stainless steel sheet or a tinplate.
The preferred metal sheet is low cost and readily available.
The length, width and height of the outer wall of the first container are respectively 20-30 cm, 20-30 cm and 15-25 cm;
the thickness of the cover is 2-5 cm;
the support column is a cuboid with the length, width and height of 5-10 cm, 5-10 cm and 10-20 cm respectively, or a cylinder with the diameter and height of 5-10 cm and 10-20 cm respectively;
the length, width and height of the outer wall of the second container are 40-50 cm, 40-50 cm and 3-5 cm respectively;
the length and the width of the metal sheet are respectively 20-30 cm and 10-20 cm;
the length, width and height of the outer wall of the transparent cover are respectively 50-60 cm, 50-60 cm and 40-50 cm;
each cushion block is a cuboid with the length, width and height of 1-2 cm, 1-2 cm and 1-2 cm respectively, or a cylinder with the diameter and height of 1-2 cm and 1-2 cm respectively.
The preferred dimensions of the first container, second container, lid, support posts, sheet metal, transparent cover, and pad are convenient to use.
Preparing the first container, the second container, the cover, the support column, the transparent cover and the cushion block from any one of polyvinyl chloride, polystyrene, polyethylene, polypropylene, phenolic resin and amino resin; the transparent cover is made of one of polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polypropylene and polyvinyl chloride.
Compared with the prior art, the utility model discloses the application has following advantage:
1) The testing device for evaluating tear stains of the latex paint in the south-returning day can simulate and test tear stains of the latex paint in the south-returning day through the first container and the second container which are stacked and the metal sheet which is movably, fixedly and tightly attached to the outer peripheral wall of the first container and coated with the latex paint to be tested, has the advantages of no need of expensive high-precision instrument matching, simplicity in operation, short time consumption, easiness and intuitiveness in judgment of results and convenience in popularization and use, can simultaneously test at least 4 latex paint samples in parallel, is high in testing efficiency, and can ensure the contrast of parallel experiments;
2) The temperature of the ice-water mixture is preferably 0 ℃, and the ice-water mixture is easy to obtain and low in cost;
3) The preferred metal sheet and first container ensure both their strength and good thermal conductivity between them;
4) The preferred design of support column position makes when using the sheetmetal of establishing simulation return south on each lateral wall of first container, and the test effect is better.
Drawings
Fig. 1 is a testing device for evaluating tear defect of latex paint in backnan sky according to the present invention.
Description of the reference symbols:
the container comprises a first container 1, a second container 2, a cover 3, a support column 4, a transparent cover 5, a cushion block 6 and a metal sheet 7.
Detailed Description
The following describes the technical solution of the present invention in detail with reference to the accompanying fig. 1.
As shown in fig. 1, the testing device for evaluating tear mark defect of latex paint in backnan sky of the present invention comprises a first container 1, a second container 2, a cover 3, a support column 4, a transparent cover 5, at least one cushion block 6 and at least one metal sheet 7 for coating the latex paint to be tested, wherein the first container 1 and the second container 2 are both hollow sealed containers with open tops, the first container 1 is a container made of heat conductive material for containing substances at-2 to 2 ℃, and the second container 2 is a container for containing water at 20 to 30 ℃; the second container 2 is placed on the support, the first container 1 is erected above the middle part of the second container 2 at intervals through the support columns 4, and openings of the first container 1 and the second container 2 face upwards; the cover 3 is arranged at the opening of the first container 1 and can completely close the opening;
the upper part of each metal sheet 7 is fixedly and tightly attached to the outer peripheral wall of the first container 1, and the surface coated with the emulsion paint to be detected faces outwards; the bottom of each metal sheet 7 extends downwards to the bottom wall of the first container 1 for a certain distance, and the area of the metal sheet 7 extending out of the bottom wall of the first container 1 is 40-60% of the total area of the metal sheet 7; the height of the support column 4 is 5-10 cm greater than the sum of the water depth in the second container 2 and the maximum length of the metal sheet 7 extending out of the bottom wall of the first container 1; the vertical distance from the peripheral wall of the first container 1 to the corresponding side wall of the inner cavity of the second container 2 is larger than the thickness of the metal sheet 7 attached to the peripheral wall of the first container 1;
the transparent cover 5 is a hollow sealed container with an opening at the bottom, the transparent cover 5 is arranged above the support and covers the first container 1, the second container 2, the metal sheet 7 and the cover 3, and the cushion block 6 is arranged between the bottom of the transparent cover 5 and the support in a cushioning manner, so that the air inside and outside the transparent cover 5 can circulate.
The first container 1 is a container for containing an ice-water mixture.
The thickness of the metal sheet 7 is 1 to 2mm, and the thickness of the sidewall of the first container 1 is 2 to 5mm.
The top end of the support column 4 is connected to the center of the outer wall at the bottom of the first container 1, and the bottom end of the support column is connected to the center of the bottom wall of the inner cavity of the second container 2.
The metal sheet 7 is attached to the outer peripheral wall of the first container 1 by an adhesive tape.
The quantity of the cushion blocks 6 is 4, and the cushion blocks 6 are uniformly arranged at the bottom of the transparent cover 5 at intervals.
The first container 1, the second container 2, the cover 3, the support column 4, the transparent cover 5 and the cushion 6 are respectively a plastic first container, a plastic second container, a plastic cover, a plastic support column, a plastic transparent cover and a plastic cushion.
The metal sheet 7 is a stainless steel sheet or a tinplate.
The length, width and height of the outer wall of the first container 1 are respectively 20-30 cm, 20-30 cm and 15-25 cm;
the thickness of the cover 3 is 2-5 cm;
the support column 4 is a cuboid with the length, width and height of 5-10 cm, 5-10 cm and 10-20 cm respectively, or a cylinder with the diameter and height of 5-10 cm and 10-20 cm respectively;
the length, width and height of the outer wall of the second container 2 are 40-50 cm, 40-50 cm and 3-5 cm respectively;
the length and the width of the metal sheet 7 are 20-30 cm and 10-20 cm respectively;
the length, width and height of the outer wall of the transparent cover 5 are respectively 50-60 cm, 50-60 cm and 40-50 cm;
each cushion block 6 is a cuboid with the length, width and height of 1-2 cm, 1-2 cm and 1-2 cm respectively, or a cylinder with the diameter and height of 1-2 cm and 1-2 cm respectively.
The utility model discloses an aassessment return south sky emulsion paint tear mark disadvantage's testing arrangement not only confine to above-mentioned embodiment, the basis all is any the improvement or the replacement of the principle of the utility model, all should be in the protection scope of the utility model.
Claims (9)
1. The utility model provides a test device of aassessment backnan day emulsion paint tear mark defect which characterized in that: the device comprises a first container (1), a second container (2), a cover (3), a support column (4), a transparent cover (5), at least one cushion block (6) and at least one metal sheet (7) for coating emulsion paint to be detected, wherein the first container (1) and the second container (2) are both hollow sealed containers with open tops, the first container (1) is a container made of heat conduction materials and used for containing substances at the temperature of-2 ℃, and the second container (2) is a container used for containing water at the temperature of 20-30 ℃; the second container (2) is placed on the support, the first container (1) is erected above the middle part of the second container (2) at intervals through the support columns (4), and openings of the first container (1) and the second container (2) face upwards; the cover (3) is arranged at the opening of the first container (1) in a covering manner and can completely close the opening;
the upper part of each metal sheet (7) is fixedly and tightly attached to the outer peripheral wall of the first container (1), and the surface coated with the emulsion paint to be detected faces outwards; the bottom of each metal sheet (7) extends downwards out of the bottom wall of the first container (1) for a certain distance, and the area of the metal sheet (7) extending out of the bottom wall of the first container (1) is 40-60% of the total area of the metal sheet (7); the height of the supporting column (4) is 5-10 cm greater than the sum of the water depth in the second container (2) and the maximum length of the metal sheet (7) extending out of the bottom wall of the first container (1); the vertical distance from the peripheral wall of the first container (1) to the corresponding side wall of the inner cavity of the second container (2) is greater than the thickness of the metal sheet (7) attached to the peripheral wall of the first container (1);
the transparent cover (5) is a hollow sealed container with an opening at the bottom, the transparent cover (5) is arranged above the support and covers the first container (1), the second container (2), the metal sheet (7) and the cover (3), and the cushion block (6) is arranged between the bottom of the transparent cover (5) and the support in a cushioning manner, so that the air inside and outside the transparent cover (5) can circulate.
2. The test device for evaluating the tear defect of the retro latex paint according to claim 1, wherein: the first container (1) is a container for containing an ice-water mixture.
3. The test device for evaluating the tear defect of the retro latex paint according to claim 1, wherein: the thickness of the metal sheet (7) is 1-2 mm, and the thickness of the side wall of the first container (1) is 2-5 mm.
4. The test device for evaluating tear defect of retro latex paint according to claim 1, wherein: the top end of the support column (4) is connected to the center of the outer wall at the bottom of the first container (1), and the bottom end of the support column is connected to the center of the bottom wall of the inner cavity of the second container (2).
5. The test device for evaluating the tear defect of the retro latex paint according to claim 1, wherein: the metal sheet (7) is attached to the outer peripheral wall of the first container (1) through an adhesive tape.
6. The test device for evaluating the tear defect of the retro latex paint according to claim 1, wherein: the number of the cushion blocks (6) is 4, and the cushion blocks (6) are uniformly arranged at the bottom of the transparent cover (5) at intervals.
7. The test device for evaluating tear defect of retro latex paint according to claim 1, wherein: the first container (1), the second container (2), the cover (3), the support column (4), the transparent cover (5) and the cushion block (6) are respectively a plastic first container, a plastic second container, a plastic cover, a plastic support column, a plastic transparent cover and a plastic cushion block.
8. The test device for evaluating tear defect of retro latex paint according to claim 1, wherein: the metal sheet (7) is a stainless steel sheet or a tinplate.
9. The test device for evaluating tear defect of retro latex paint according to claim 1, wherein: the length, width and height of the outer wall of the first container (1) are respectively 20-30 cm, 20-30 cm and 15-25 cm;
the thickness of the cover (3) is 2-5 cm;
the support column (4) is a cuboid with the length, width and height of 5-10 cm, 5-10 cm and 10-20 cm respectively, or a cylinder with the diameter and height of 5-10 cm and 10-20 cm respectively;
the length, the width and the height of the outer wall of the second container (2) are 40-50 cm, 40-50 cm and 3-5 cm respectively;
the length and the width of the metal sheet (7) are 20-30 cm and 10-20 cm respectively;
the length, width and height of the outer wall of the transparent cover (5) are respectively 50-60 cm, 50-60 cm and 40-50 cm;
each cushion block (6) is a cuboid with the length, width and height of 1-2 cm, 1-2 cm and 1-2 cm respectively, or a cylinder with the diameter and height of 1-2 cm and 1-2 cm respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222065137.8U CN217981490U (en) | 2022-08-05 | 2022-08-05 | Test device for evaluating tear defect of latex paint in Huinan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222065137.8U CN217981490U (en) | 2022-08-05 | 2022-08-05 | Test device for evaluating tear defect of latex paint in Huinan |
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| Publication Number | Publication Date |
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| CN217981490U true CN217981490U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222065137.8U Active CN217981490U (en) | 2022-08-05 | 2022-08-05 | Test device for evaluating tear defect of latex paint in Huinan |
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| CN (1) | CN217981490U (en) |
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