CN114659975A - Method for testing friction force of coating surface - Google Patents
Method for testing friction force of coating surface Download PDFInfo
- Publication number
- CN114659975A CN114659975A CN202210118148.XA CN202210118148A CN114659975A CN 114659975 A CN114659975 A CN 114659975A CN 202210118148 A CN202210118148 A CN 202210118148A CN 114659975 A CN114659975 A CN 114659975A
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- target
- friction force
- coating film
- testing
- spring scale
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
Abstract
The application discloses a method for testing the friction force of a coating surface, and relates to the field of film performance testing. According to the method, the two target plates coated with the coating films are stacked, and the friction force between the two target plates is tested by pulling the spring scale, so that contrast test can be rapidly and visually performed, electronic instrument equipment and special tools are not needed, and the experimental method is simple, convenient, reliable and easy to implement.
Description
Technical Field
The application relates to the field of film performance testing, in particular to a method for testing the friction force of a film surface.
Background
The high-friction coating is a novel anti-slip coating product, and the anti-slip coating is a coating with soft elasticity and rough surface texture effect, and is a functional coating which is coated on the surface of a base material to improve the surface friction coefficient of the base material to a safe level so as to increase the surface friction and prevent slipping. The early anti-skid coating mainly comprises liquid paint, and the application scenes are mostly concentrated in the fields of ship decks and floor paint. The antiskid paint for decks is prepared by taking reduced modified polyurethane as a primer, adopting an elastic middle paint and a weather-resistant polyurethane surface paint and assisting in preventing slippery granules, and is suitable for taking off and landing of helicopters. In recent years, the elevator industry is rapidly developed at home, meanwhile, people are also prompted to pay attention to the safety of the elevator industry, and the coating film serving as the coat of the elevator structural member not only endows the aesthetic requirement and the anti-corrosion requirement, but also pays more attention to the anti-slip performance.
At present, professional experimental equipment is needed for testing the frictional force of the anti-skid coating film, samples in a paint production plant need to be subjected to ex-commission inspection, so that the time is long, and the result is generally obtained only by a worship. Such a long test time has a great influence on the research and development and production control of the anti-skid coating film by a coating manufacturer. Therefore, a simple, convenient, rapid and accurate method and device are urgently needed to rapidly judge the friction force of the surface of each coating sprayed workpiece, help the research and development of the anti-skid coating and accelerate the production.
Disclosure of Invention
The application aims to provide a method for testing friction force of a coating surface, and solves the problems of high friction force testing difficulty and long time in the prior art.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a method for testing the friction force of a coating surface comprises the following steps:
obtaining a first target board and a second target board, wherein coating films are arranged on the surfaces of the first target board and the second target board;
stacking the first target on the second target;
transversely hanging a spring scale on one side of the first target plate;
applying pressure on the first target;
under the condition of keeping the second target plate not to generate displacement, horizontally pulling the spring scale at a constant speed;
but when the first target and the second target move relatively, the value of the spring scale is recorded.
In the technical scheme, the two targets coated with the coating films on the surfaces are stacked, the friction force between the two targets is tested by pulling the spring scale, contrast test can be performed quickly and visually, electronic instruments and special tools are not needed, and the experimental method is simple, convenient, reliable and easy to implement.
Further in accordance with an embodiment of the present application, wherein the first target and the second target are the same in shape, size and thickness.
Further, according to the embodiment of the application, the first target and the second target are stacked in a staggered manner, so that one side of the second target, which is far away from the spring balance, is exposed.
Further, according to the embodiment of the application, an iron plate is arranged below the second target.
Further in accordance with an embodiment of the present application, wherein the iron plate thickness is equal to a center thickness of the spring balance minus a thickness of the second target plate.
Further in accordance with an embodiment of the present application, wherein the pressure exerted on the first target is in a range of 50-150N.
Further in accordance with an embodiment of the present application, wherein the value on the spring scale is a maximum value generated when the spring scale is pulled.
Further in accordance with an embodiment of the present application, wherein the pulling of the spring scale is repeated a plurality of times, each time the stacking position of the first target and the second target is kept consistent, the obtained spring scale values are averaged.
Further, according to the embodiment of the application, the coating film is formed by coating paint or powder coating.
In order to achieve the above object, the embodiment of the present application further discloses a device for measuring friction force on a surface of a coating film, which performs friction force test by using the above method for measuring friction force on a surface of a coating film
Compared with the prior art, the method has the following beneficial effects: according to the method, two targets coated with films on the surfaces are stacked, and the friction force between the two targets is tested by pulling the spring scale, so that contrast test can be performed quickly and visually, electronic instruments and special tools are not needed, and the experimental method is simple, convenient, reliable and easy to implement.
Detailed Description
In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more apparent, embodiments of the present invention are described in further detail below. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships only for the convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For simplicity and illustrative purposes, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The application discloses a method for testing the friction force of a coating surface, which comprises the following steps:
obtaining a first target board and a second target board, wherein the surfaces of the first target board and the second target board are provided with coating films; the coating film can be a paint coating film or a powder coating film, and the application is not limited;
stacking the first target on the second target;
transversely hanging a spring scale on one side of the first target plate;
applying pressure on the first target;
pulling the spring scale horizontally at a constant speed under the condition of keeping the second target plate not to generate displacement;
but when the first target and the second target move relatively, the value on the spring scale is recorded.
In the technical scheme, the two targets coated with the coating films on the surfaces are stacked, and the friction force between the two targets is tested by pulling the spring scale, so that the comparison test can be performed quickly and visually, electronic instruments and special tools are not needed, and the experimental method is simple, convenient, reliable and easy to implement. Specifically, the test principle of this application has utilized frictional force formula f to uN, wherein u is coefficient of friction, and N is two contact object mutual extruded effort, is the pressure of exerting on first mark board in this application promptly, and f is the pulling force when pulling the first mark board of spring balance drive and producing the displacement. In the above formula, in the case where N is kept consistent, the larger f proves the larger u, so the magnitude of u can be compared between different powder coatings by the value read by the spring balance.
In addition, the first target and the second target need to be thin plates with the same shape, size and thickness, so that experimental errors can be reduced.
When stacking the first target and the second target, the second target is preferably stacked in a staggered manner, so that one side of the second target, which is far away from the spring scale, is exposed, and the second target is conveniently fixed when the spring scale is pulled.
Furthermore, an iron plate can be arranged below the second target, the thickness of the iron plate is equal to the thickness of the center of the spring scale minus the thickness of the second target, so that the center of the first target is consistent with the center of the spring scale, and experimental errors are reduced.
Further, the pressure applied to the first target is in a range of 50-150N, and too small pressure easily causes too small tension f measured on the spring scale, which is inconvenient to read; if pressure is too big, be difficult to stimulate first mark board, influence the experiment effect.
When reading the value f on the spring scale, f should be the maximum value that produces when pulling the spring scale, and in order to guarantee that the experimental data is accurate, can repeat the experiment, but will guarantee that the position of stacking of first target and second target keeps unanimous each time, and it can to get the average value of f at last.
The technical effects of the present application will be further described below by way of examples and comparative examples, but the present application is not limited to these examples.
[ example 1 ]
Spraying bright powder on the surface of first mark board and second mark board, with first mark board dislocation stack on the second mark board, hang spring balance on one side of first mark board, place the 10kg heavy object on first mark board, keep under the motionless condition of second mark board, the level at the uniform velocity stimulates spring balance, until relative motion appears in first mark board and second mark board, the biggest numerical value f on the record spring balance.
[ example 2 ]
Spraying bright powder on the surface of first mark board and second mark board, with first mark board dislocation stack on the second mark board, hang spring balance on one side of first mark board, place the 10kg heavy object on first mark board, keep under the motionless condition of second mark board, the level at the uniform velocity stimulates spring balance, until relative motion appears in first mark board and second mark board, the biggest numerical value on the record spring balance.
[ example 3 ]
Fine sand lines are sprayed on the surfaces of the first target plate and the second target plate, the first target plate is stacked on the second target plate in a staggered mode, the spring scale is hung on one side of the first target plate, a 10kg heavy object is placed on the first target plate, the second target plate is kept motionless, the spring scale is pulled horizontally at a constant speed until the first target plate and the second target plate move relatively, and the maximum numerical value on the spring scale is recorded.
[ example 4 ] A method for producing a polycarbonate
Coarse sand grains are sprayed on the surfaces of the first target plate and the second target plate, the first target plate is stacked on the second target plate in a staggered mode, the spring scale is hung on one side of the first target plate, a 10kg heavy object is placed on the first target plate, the second target plate is kept motionless, the spring scale is pulled horizontally at a constant speed until the first target plate and the second target plate move relatively, and the maximum numerical value on the spring scale is recorded.
[ example 5 ]
The surface spraying orange peel 1 at first mark board and second mark board, with first mark board dislocation stack on the second mark board, hang the spring balance in one side of first mark board, place the 10kg heavy object on first mark board, keep under the motionless condition of second mark board, the level at the uniform velocity stimulates the spring balance, until relative motion appears in first mark board and second mark board, records the biggest numerical value on the spring balance.
[ example 6 ]
Orange veins 2 are sprayed on the surfaces of the first target plate and the second target plate, the first target plate is stacked on the second target plate in a staggered mode, a spring scale is hung on one side of the first target plate, a 10kg heavy object is placed on the first target plate, the second target plate is kept motionless, the spring scale is horizontally pulled at a constant speed until the first target plate and the second target plate move relatively, and the maximum numerical value on the spring scale is recorded.
[ example 7 ]
Orange veins 3 are sprayed on the surfaces of the first target plate and the second target plate, the first target plate is stacked on the second target plate in a staggered mode, a spring scale is hung on one side of the first target plate, a 10kg heavy object is placed on the first target plate, the second target plate is kept motionless, the spring scale is horizontally pulled at a constant speed until the first target plate and the second target plate move relatively, and the maximum numerical value on the spring scale is recorded.
[ example 8 ]
Orange peel 4 is sprayed on the surfaces of the first target plate and the second target plate, the first target plate is stacked on the second target plate in a staggered mode, the spring scale is hung on one side of the first target plate, a 10kg heavy object is placed on the first target plate, the second target plate is kept motionless, the spring scale is pulled horizontally at a constant speed until the first target plate and the second target plate move relatively, and the maximum numerical value on the spring scale is recorded.
The test results are summarized in Table 1.
TABLE 1
| Powder coating type | Measured value of spring balance (Kg) | |
| Example 1 | Bright powder | 0.2 |
| Example 2 | Matting powder | 0.3 |
| Example 3 | Fine sand grain | 0.5 |
| Example 4 | Coarse sand grain | 0.9 |
| Example 5 | Orange peel 1 | 1.0 |
| Example 6 | Orange peel 2 | 1.5 |
| Example 7 | Orange peel 3 | 2.5 |
| Example 8 | Orange peel 4 | 4.0 |
According to table 1, the friction force of the surface of the coating film can be simply, rapidly and intuitively displayed by using the friction force testing method for the surface of the coating film, and the method is suitable for comparing friction forces among different powder coatings.
In addition, the powder coatings of examples 5-8 above were also tested for frictional force by the force bracket test, and compared to the test results of the present application, the results of which are shown in table 2.
TABLE 2
According to table 2, the friction force test performed by the method for testing friction force of the surface of the coating film described in the present application is performed, the test result is consistent with the friction force test performed by the universal bracket, and the friction force of the powder coating tested by the method for testing friction force of the surface of the coating film in examples 5 to 8 is increased one by one, i.e., the method for testing friction force of the surface of the coating film described in the present application is used to compare the friction force, so as to evaluate the anti-slip effect of the powder coating.
Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.
Claims (10)
1. A method for testing the friction force of the surface of a coating film is characterized by comprising the following steps:
obtaining a first target and a second target, wherein the surfaces of the first target and the second target are provided with coating films;
stacking the first target on the second target;
transversely hanging a spring scale on one side of the first target;
applying pressure on the first target;
under the condition of keeping the second target plate not to generate displacement, horizontally pulling the spring scale at a constant speed;
but when the first target and the second target move relatively, the value of the spring scale is recorded.
2. The method for testing the frictional force on the surface of a coating film according to claim 1, wherein the first target and the second target have the same shape, size and thickness.
3. The method of claim 1, wherein the first target and the second target are stacked in a staggered manner such that a side of the second target remote from the spring balance is exposed.
4. The method for testing the friction force on the surface of a coating film according to claim 1, wherein an iron plate is arranged below the second target.
5. The method for testing friction force of surface of coating film according to claim 4, wherein the thickness of said iron plate is equal to the thickness of center of spring balance minus the thickness of second target plate.
6. The method for testing the frictional force on the surface of a coating film according to claim 1, wherein the pressure applied to the first target is in the range of 50 to 150N.
7. The method for testing the friction force of the surface of a coating film according to claim 1, wherein the value on the spring scale is the maximum value generated when the spring scale is pulled.
8. The method according to claim 1, wherein the spring scale is repeatedly pulled a plurality of times, and the number of the spring scales is averaged each time the stacking position of the first target and the second target is kept consistent.
9. The method for testing the surface friction of a coating film according to claim 1, wherein the coating film is formed by coating paint or powder coating.
10. A device for measuring a friction force on a surface of a coating film, characterized by conducting a friction force test by the method for measuring a friction force on a surface of a coating film according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111661161 | 2021-12-31 | ||
| CN2021116611611 | 2021-12-31 |
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| CN114659975A true CN114659975A (en) | 2022-06-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6149506A (en) * | 1998-10-07 | 2000-11-21 | Keltech Engineering | Lapping apparatus and method for high speed lapping with a rotatable abrasive platen |
| CN101216087A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Plate-type friction-changing damper |
| CN206074420U (en) * | 2016-09-27 | 2017-04-05 | 同光（江苏）新材料科技有限公司 | A kind of smooth system safety testing device of coating surface |
| CN207760700U (en) * | 2017-12-30 | 2018-08-24 | 广州大广高速公路有限公司 | A kind of cutting apparatus for concrete road surface veining |
| CN109256018A (en) * | 2018-10-29 | 2019-01-22 | 四川省通江县永安中学校 | A kind of experiment instrument of the correlative factor of test influence frictional force |
-
2022
- 2022-02-08 CN CN202210118148.XA patent/CN114659975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6149506A (en) * | 1998-10-07 | 2000-11-21 | Keltech Engineering | Lapping apparatus and method for high speed lapping with a rotatable abrasive platen |
| CN101216087A (en) * | 2008-01-18 | 2008-07-09 | 北京工业大学 | Plate-type friction-changing damper |
| CN206074420U (en) * | 2016-09-27 | 2017-04-05 | 同光（江苏）新材料科技有限公司 | A kind of smooth system safety testing device of coating surface |
| CN207760700U (en) * | 2017-12-30 | 2018-08-24 | 广州大广高速公路有限公司 | A kind of cutting apparatus for concrete road surface veining |
| CN109256018A (en) * | 2018-10-29 | 2019-01-22 | 四川省通江县永安中学校 | A kind of experiment instrument of the correlative factor of test influence frictional force |
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| Title |
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