CN115096736A - Method for testing abrasion performance of civil aviation tire tread and application thereof - Google Patents
Method for testing abrasion performance of civil aviation tire tread and application thereof Download PDFInfo
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- CN115096736A CN115096736A CN202211022500.6A CN202211022500A CN115096736A CN 115096736 A CN115096736 A CN 115096736A CN 202211022500 A CN202211022500 A CN 202211022500A CN 115096736 A CN115096736 A CN 115096736A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention discloses a method for testing the abrasion performance of a civil aviation tire tread and application thereof, belonging to the technical field of civil aviation tires. The test method comprises the following steps: the method comprises the steps of wrapping an unvulcanized transition rubber sheet on the surface of a rubber wheel of an abrasion tester, then covering a tire tread rubber strip to be tested on the unvulcanized transition rubber sheet, vulcanizing and molding the rubber wheel sequentially covered with the unvulcanized transition rubber sheet and the tire tread rubber strip to be tested as a whole to obtain a sample wheel to be tested, and finally testing the abrasion performance of the obtained sample wheel to be tested. The test method provided by the invention has the advantages of stable test result and high accuracy; the testing method provided by the invention is simple to operate and high in efficiency, and can be applied to judgment and comparison of the wear performance of the civil aviation tire tread.
Description
Technical Field
The invention belongs to the technical field of civil aviation tires, and particularly relates to a method for testing the tread wear performance of a civil aviation tire and application thereof.
Background
For tires, wear indicators are important indicators for evaluating the overall performance of the tire. For commercial aircraft tires, load and speed conditions are more extreme and demanding than for conventional tires. The wear rate of aircraft tire treads is also much higher than conventional tires under high speed, high load conditions. Compared with the common tire used under the conventional working condition, the importance of the tread wear index on the evaluation of the comprehensive performance of the whole tire is more remarkable in the aviation tire.
The Akron abrasion tester is the most common equipment for evaluating the wear resistance of tread rubber or finished tread components, and the loading and sliding conditions in the Akron abrasion test process can simulate the use working condition of a conventional tire to a certain extent. However, for an aircraft tire used under a high-load condition, the conventional akron abrasion test conditions cannot truly reflect the actual use condition of the tread area, so when the akron abrasion test is performed on the aircraft tire tread, the test load needs to be increased. When the product tire tread part is subjected to the Akron abrasion test, a mechanical cutting and polishing method is adopted to sample the finished tire tread part, the finished tire tread part is ground to the size required by the national standard, and then the prepared rubber strip is adhered to the surface of a metal wheel to be used as a sample wheel for testing.
The rubber strip obtained by a conventional sampling means has poor surface flatness, and the roundness of a sample wheel bonded on the surface of a metal wheel is insufficient, so that the situation that the test wheel shakes during rotation in the test process directly occurs, the repeatability of the test result is poor, and the accuracy of the test result and the evaluation conclusion of a tread part are influenced. For the aircraft tire tread Akron abrasion test needing to improve the test load and speed, the conventional sample preparation and test method can cause the test result to be more inaccurate and difficult to repeat.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a civil aviation tire tread wear performance testing method with excellent testing accuracy and stability and application thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a testing method for tread wear performance of civil aviation tires comprises the following steps: the method comprises the steps of wrapping an unvulcanized transition rubber sheet on the surface of a rubber wheel of an abrasion tester, then covering a tire tread rubber strip to be tested on the unvulcanized transition rubber sheet, vulcanizing and molding the rubber wheel sequentially covered with the unvulcanized transition rubber sheet and the tire tread rubber strip to be tested as a whole to obtain a sample wheel to be tested, and finally testing the abrasion performance of the obtained sample wheel to be tested.
According to the method for testing the abrasion performance of the civil aviation tire tread, the unvulcanized transition rubber sheet is added between the tire tread rubber sheet to be tested and the surface of the rubber wheel and then integrally vulcanized and molded, so that one side of the unvulcanized transition rubber sheet is vulcanized and bonded with the tire tread rubber sheet to be tested together after vulcanization molding, and the other side of the unvulcanized transition rubber sheet is bonded with the surface of the rubber wheel, so that the prepared sample wheel to be tested is good in roundness and is not easy to shake in the testing process; therefore, the test result is stable and the accuracy is high.
As a preferred embodiment of the method for testing the tread wear performance of the civil aviation tire, the surface of the rubber wheel is provided with a plurality of fan-shaped protrusions, and grooves are formed between the adjacent fan-shaped protrusions.
The inventor researches and discovers that when a groove structure is further arranged on the surface of the rubber wheel, unvulcanized transition rubber can be meshed with the groove structure on the surface of the rubber wheel after vulcanization molding, so that the stability of the prepared sample wheel to be tested is further improved, and the repeatability, the stability and the accuracy of a test result are ensured.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the depth and the width of the groove are both 2 mm.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the positive vulcanization time of the unvulcanized transition rubber sheet at 145 ℃ is 5-10 min.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the thickness of the unvulcanized transition rubber sheet is 1.5-2mm, and the thickness is the distance from one side of the unvulcanized transition rubber sheet far away from the rubber wheel surface to the fan-shaped bulge on the rubber wheel surface.
The inventors have found that when the thickness of the unvulcanized transition rubber sheet is 1.5 to 2mm, the relative standard deviation of the test after the subsequent vulcanization molding is smaller, i.e., the stability of the test method is better.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the temperature of the vulcanization molding is 100-140 ℃.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the temperature of the vulcanization molding is 110-120 ℃.
The inventor researches and discovers that when the temperature of vulcanization molding is 100-140 ℃, particularly 100-140 ℃, the relative standard deviation of subsequent tests is smaller.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the time for vulcanization molding is 20 to 60 minutes.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, the time for vulcanization molding is 20 to 30 minutes.
The inventor researches and finds that relative deviation is small when the time for vulcanization molding is 20-60 minutes, and in order to further improve the testing efficiency, the time for vulcanization molding is preferably 20-30 minutes.
As a preferred embodiment of the testing method for the tread wear performance of the civil aviation tire, the wear performance test is carried out by adopting an Akron wear tester, and the testing process is carried out according to the method GB/T1689-2014.
According to the GB/T1689-.
As a preferred embodiment of the method for testing the tread wear performance of the civil aviation tire, the tire tread rubber strip to be tested is cut at the crown position of the civil aviation tire.
As a preferable embodiment of the testing method for the tread wear performance of the civil aviation tire, in the testing process, the load of the Akron wear tester is 26.7-100N, and the rotating speed is 76-200 rpm.
In addition, the invention also provides application of the test method for the wear performance of the civil aviation tire tread in judging and comparing the wear performance of the civil aviation tire tread.
Compared with the prior art, the invention has the beneficial effects that:
according to the method for testing the abrasion performance of the civil aviation tire tread, the unvulcanized transition rubber sheet is added between the tire tread rubber sheet to be tested and the surface of the rubber wheel and then integrally vulcanized and molded, so that one side of the unvulcanized transition rubber sheet is vulcanized and bonded with the tire tread rubber sheet to be tested together after vulcanization molding, and the other side of the unvulcanized transition rubber sheet is mutually occluded with the groove structure on the surface of the rubber wheel, so that the prepared sample wheel to be tested is good in roundness and is not easy to shake in the testing process; therefore, the test result is stable and the accuracy is high; the testing method provided by the invention is simple to operate and high in efficiency, and can be applied to judgment and comparison of the wear performance of the civil aviation tire tread.
Drawings
Fig. 1 is a schematic structural diagram of a sample wheel to be measured.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
A testing method for the tread wear performance of civil aviation tires comprises the following steps: wrapping an unvulcanized transition rubber sheet on the surface of a rubber wheel of an abrasion tester, then covering a tire tread rubber strip to be tested on the unvulcanized transition rubber sheet, vulcanizing and molding the rubber wheel sequentially covered with the unvulcanized transition rubber sheet and the tire tread rubber strip to be tested as a whole to obtain a sample wheel to be tested, and finally testing the abrasion performance of the obtained sample wheel to be tested;
specifically, the surface of the rubber wheel is provided with a plurality of fan-shaped bulges, grooves are formed between every two adjacent fan-shaped bulges, wherein the depth and the width of each groove are 2mm, and the forming method comprises the steps of turning the surface of the rubber wheel along the circumferential direction to obtain the fan-shaped bulges and the groove structures between the adjacent fan-shaped bulges; when an unvulcanized transition rubber sheet is wrapped on the surface of a rubber wheel of the abrasion tester, the wrapping thickness is 1.5-2mm, and the distance from one side of the unvulcanized transition rubber sheet, which is far away from the surface of the rubber wheel, to the fan-shaped bulge on the surface of the rubber wheel is long; the structural schematic diagram is shown in fig. 1, wherein 1 represents a tire tread rubber strip to be tested, 2 represents an unvulcanized transition rubber sheet, and 3 represents a rubber wheel framework;
the testing method of the invention follows GB/T1689-; and then, preparing a sample wheel to be tested according to the testing method provided by the invention, and then, testing the abrasion performance, wherein the obtained data can reflect the abrasion performance of the civil aviation tire tread.
Example 1
The embodiment of the invention provides a method for testing the abrasion performance of a civil aviation tire tread, wherein in the method, an unvulcanized transition rubber sheet is used, the positive vulcanization time at 145 ℃ is 5min, and the thickness is 2 mm; in the test process, the load of the Akron abrasion tester is 50N, and the rotating speed is 100 rpm; turning the surface of the rubber wheel along the circumferential direction before testing to obtain the rubber wheel with the fan-shaped protrusions and the groove structures between the adjacent fan-shaped protrusions, wherein the depth and the width of the groove are 2 mm; the tire tread rubber strip of the civil aviation tire to be detected is obtained by cutting and polishing the tire crown position of the civil aviation tire, and the size of the tire tread rubber strip meets the size required by the national standard;
the method comprises the following steps: the method comprises the steps of wrapping an unvulcanized transition rubber sheet on the surface of a rubber wheel containing a groove structure of a wear testing machine, then covering a tire tread rubber strip to be tested on the unvulcanized transition rubber sheet, taking the rubber wheel sequentially covered with the unvulcanized transition rubber sheet and the tire tread rubber strip to be tested as a whole, keeping the rubber wheel at 120 ℃ for 25min for vulcanization molding to obtain a sample wheel to be tested, and finally testing the wear performance of the obtained sample wheel to be tested.
Example 2
The only difference between the inventive example and example 1 is that the positive vulcanization time of the unvulcanized transition rubber sheet at 145 ℃ is 8 min.
Example 3
The only difference between the inventive example and example 1 is that the thickness of the uncured transitional film was 1.5 mm.
Example 4
The only difference between the inventive example and example 1 is that the vulcanization molding temperature is 110 ℃.
Example 5
The only difference between the inventive example and example 1 is that the vulcanization molding temperature is 100 ℃.
Example 6
The only difference between the inventive example and example 1 is that the vulcanization molding temperature is 140 ℃.
Example 7
The only difference between the inventive example and example 1 is that the Akron abrasion tester has a load of 50N and a rotational speed of 76 rpm.
Example 8
The only difference between the inventive example and example 1 is that the Akron abrasion tester has a load of 50N and a rotational speed of 200 rpm.
Example 9
The only difference between the inventive example and example 1 is that the load of the Akron abrasion tester is 26.7N and the rotational speed is 100 rpm.
Example 10
The only difference between the inventive example and example 1 is that the akron abrader has a load of 100N and a rotational speed of 100 rpm.
Comparative example 1
The only difference between the comparative example of the present invention and example 1 is that no unvulcanized transition rubber sheet was added;
specifically, in the test process, the load of the Akron abrasion tester is 50N, and the rotating speed is 100 rpm; the tire tread rubber strip of the civil aviation tire to be detected is obtained by cutting and polishing the tire crown position of the civil aviation tire, and the size of the tire tread rubber strip meets the size required by the national standard;
the method comprises the following steps: and covering and bonding the tire tread rubber strip to be tested on the rubber wheel to obtain a sample wheel to be tested, and testing the abrasion performance of the obtained sample wheel to be tested.
Comparative example 2
The only difference between the comparative example of the invention and example 1 is that the positive cure time of the unvulcanized transition rubber sheet at 145 ℃ is 15 min.
Comparative example 3
The only difference between the comparative example of the invention and example 1 is that the thickness of the unvulcanized duct rubber sheet was 4 mm.
Comparative example 4
The only difference between the comparative example according to the invention and example 1 is that the vulcanization temperature is 160 ℃.
Comparative example 5
The only difference between the comparative example according to the invention and example 1 is that the vulcanization temperature is 80 ℃.
Effects of the invention
The present effect examples record abrasion performance test data obtained by the examples 1 to 10 and the comparative examples 1 to 5, and the data are shown in table 1, wherein 5 samples were taken for all the examples and comparative examples, and the samples were tested 5 times in parallel, and the average value was taken 5 times, and the Relative Standard Deviation (RSD) was calculated, the test mileage was 1.61km, and the test temperature was room temperature. The relative standard deviation is calculated as follows:
TABLE 1
As can be seen from Table 1, the relative standard deviation of the test method obtained by adopting the technical scheme of the invention is small, and the absolute value of the test relative standard deviation is below 7.6%, which shows that the test method provided by the invention has good stability.
It can be seen from example 1 and comparative example 1 that when the unvulcanized transition rubber sheet is not used, but the tire tread strip to be tested is directly covered on the rubber wheel for testing, the obtained result is extremely unstable, and the relative standard deviation reaches +/-42%.
As can be seen from examples 1-2 and comparative example 2, the positive cure time of the uncured transition rubber sheet at 145 ℃ used has an effect on the stability of the test method, and when the positive cure time of the uncured transition rubber sheet at 145 ℃ is out of the range given by the present invention, the absolute value of the obtained relative deviation is significantly increased;
as can be seen from examples 1, 3 and 3, the thickness of the unvulcanized duct sheet also has an effect on the stability of the test method, and if the thickness is too large, the stability is deteriorated;
it can be seen from examples 1, 4-6 and comparative examples 4-5 that the selection of the vulcanization temperature also affects the stability of the test method, and if the vulcanization temperature is too low, vulcanization does not occur, resulting in sample preparation failure.
Finally, it should be noted that the above embodiments are intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A testing method for tread wear performance of civil aviation tires is characterized by comprising the following steps: the method comprises the steps of wrapping an unvulcanized transition rubber sheet on the surface of a rubber wheel of an abrasion tester, then covering a tire tread rubber strip to be tested on the unvulcanized transition rubber sheet, vulcanizing and molding the rubber wheel sequentially covered with the unvulcanized transition rubber sheet and the tire tread rubber strip to be tested as a whole to obtain a sample wheel to be tested, and finally testing the abrasion performance of the obtained sample wheel to be tested.
2. The civil aviation tire tread wear performance test method as claimed in claim 1, wherein the surface of the rubber wheel is provided with a plurality of fan-shaped protrusions, and grooves are formed between adjacent fan-shaped protrusions.
3. The civil aviation tire tread wear performance test method according to claim 2, wherein the positive vulcanization time of the unvulcanized transition rubber sheet at 145 ℃ is 5-10 min.
4. The civil aviation tire tread wear performance test method according to claim 3, wherein the thickness of the unvulcanized transition rubber sheet is 1.5-2mm, and the thickness is the distance from the side of the unvulcanized transition rubber sheet far away from the rubber wheel surface to the fan-shaped bulge on the rubber wheel surface.
5. The method for testing the tread wear performance of the civil aviation tire as in claim 4, wherein the temperature for the vulcanization molding is 100-140 ℃.
6. The method for testing the tread wear performance of the civil aviation tire as in claim 5, wherein the temperature for the vulcanization molding is 110-120 ℃.
7. The civil aviation tire tread wear performance test method of claim 6, wherein the vulcanization molding time is 20 to 60 minutes.
8. The method for testing the tread wear performance of the civil aviation tire as claimed in claim 7, wherein the wear performance test is carried out by an Akron wear tester, and the test process is carried out according to GB/T1689-.
9. The method for testing the tread wear performance of the civil aviation tire as claimed in claim 8, wherein the load of the Akron wear tester is 26.7-100N and the rotation speed is 76-200rpm during the test.
10. Use of a test method for civil aviation tire tread wear performance according to any one of claims 1 to 9 for judging and comparing the wear performance of civil aviation tire treads.
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| CN202211022500.6A CN115096736B (en) | 2022-08-25 | 2022-08-25 | Method for testing abrasion performance of civil aviation tire tread and application thereof |
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| CN202211022500.6A CN115096736B (en) | 2022-08-25 | 2022-08-25 | Method for testing abrasion performance of civil aviation tire tread and application thereof |
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| CN115096736B CN115096736B (en) | 2022-11-29 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014177071A (en) * | 2013-03-15 | 2014-09-25 | Bridgestone Corp | Tire manufacturing method |
| CN105181504A (en) * | 2015-10-14 | 2015-12-23 | 江苏通用科技股份有限公司 | Device and method for testing finished tire tread compound Akron abrasion |
| CN211505080U (en) * | 2020-01-13 | 2020-09-15 | 太原工业学院 | Sample preparation device for Akron abrasion test |
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2022
- 2022-08-25 CN CN202211022500.6A patent/CN115096736B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014177071A (en) * | 2013-03-15 | 2014-09-25 | Bridgestone Corp | Tire manufacturing method |
| CN105181504A (en) * | 2015-10-14 | 2015-12-23 | 江苏通用科技股份有限公司 | Device and method for testing finished tire tread compound Akron abrasion |
| CN211505080U (en) * | 2020-01-13 | 2020-09-15 | 太原工业学院 | Sample preparation device for Akron abrasion test |
Non-Patent Citations (2)
| Title |
|---|
| 王孟钟 等: "《胶粘剂应用手册》", 30 November 1987, 化学工业出版社 * |
| 田原 等: "《阿克隆磨耗试验的简易制样方法》", 《轮胎工业》 * |
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