CN115096736B - 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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- CN115096736B CN115096736B CN202211022500.6A CN202211022500A CN115096736B CN 115096736 B CN115096736 B CN 115096736B CN 202211022500 A CN202211022500 A CN 202211022500A CN 115096736 B CN115096736 B CN 115096736B
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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 civil aviation tires, the 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 carried out 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 provides a method for testing the tread wear performance of a civil aviation tire with excellent testing accuracy and stability and application thereof.
In order to realize 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 mutually occluded 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 2mm.
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 5-10min.
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 wear performance of the civil aviation tire tread, 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 inventors have found that the relative standard deviation of subsequent tests is smaller when the temperature of vulcanization molding is in the range of 100 to 140 c, particularly in the range of 100 to 140 c.
As a preferable embodiment of the testing method for the wear performance of the civil aviation tire tread, the time for vulcanization molding is 20 to 60 minutes.
As a preferable embodiment of the testing method for the wear performance of the civil aviation tire tread, 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 preferable embodiment of the testing method for the wear performance of the civil aviation tire tread, the wear performance test is carried out by using an Akron wear tester, and the testing process is carried out according to the method GB/T1689-2014.
According to the GB/T1689-2014 method, before testing, the rubber strip of the tire tread to be tested needs to be ground to the thickness of 3.2 +/-0.2 mm and the width of 12.7 +/-0.2 mm defined in the national standard GB/T1689-2014, and the length of the rubber strip is controlled to be 202 +/-2 mm.
As a preferable embodiment of the testing method for the abrasion performance of the civil aviation tire tread, 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 testing machine is 26.7-100N, and the rotating speed is 76-200rpm.
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 following beneficial effects:
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 an abrasion tester, the wrapping thickness is 1.5-2mm, and the distance from one side of the unvulcanized transition rubber sheet far away from the surface of the rubber wheel to a fan-shaped bulge on the surface of the rubber wheel is short; 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/T1689-2014 method, before testing, a tire tread rubber strip to be tested which is slightly larger than the national standard required size is cut from the crown position of the civil aviation tire, and then the tire tread rubber strip is cut and polished to the size which meets the national standard requirement; 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 2mm; in the test process, the load of the Akron abrasion tester is 50N, and the rotating speed is 100rpm; 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 2mm; the tire tread rubber strip of the civil aviation tire to be detected is obtained by cutting, cutting and polishing the tire crown position of the civil aviation tire, and the size of the rubber strip meets the size required by national standards;
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 8min.
Example 3
The only difference between the inventive example and example 1 is that the thickness of the uncured transitional film was 1.5mm.
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 examples of the invention and example 1 is that the load of the Akron abrasion tester is 50N and the rotational speed is 76rpm.
Example 8
The only difference between the examples of the invention and example 1 is that the load of the Akron abrasion tester is 50N and the rotation speed is 200rpm.
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 100rpm.
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 100rpm.
Comparative example 1
The only difference between the comparative example of the 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 100rpm; the tire tread rubber strip of the civil aviation tire to be tested is obtained by cutting and polishing the tire crown position of the civil aviation tire, and the size of the rubber strip meets the size required by 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 15min.
Comparative example 3
The only difference between the comparative example of the present invention and example 1 is that the thickness of the unvulcanized duct sheet was 4mm.
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 recorded the abrasion performance test data obtained in examples 1 to 10 and comparative examples 1 to 5, which are shown in table 1, wherein 5 samples were taken for all examples and comparative examples, 5 times of parallel test were conducted, 5 average values were taken, 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 had an effect on the stability of the test method, and when the positive cure time of the uncured transition rubber sheet at 145 ℃ was outside the range given by the present invention, the absolute value of the obtained relative deviation was 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 or equivalent substitutions may 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 (6)
1. A testing method for tread wear performance of civil aviation tires is characterized by comprising 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;
the positive vulcanization time of the unvulcanized transition rubber sheet at 145 ℃ is 5-10min, 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, which is far away from the surface of the rubber wheel, to the fan-shaped bulge on the surface of the rubber wheel;
the temperature of the vulcanization molding is 100-140 ℃;
in the test process, the load of the Akron abrasion tester is 26.7-100N, and the rotating speed is 76-200rpm.
2. The civil aviation tire tread wear performance test method according to claim 1, wherein the surface of the rubber wheel is provided with a plurality of fan-shaped protrusions, and grooves are formed between every two adjacent fan-shaped protrusions.
3. The civil aviation tire tread wear performance test method according to claim 1, wherein the temperature of the vulcanization molding is 110 to 120 ℃.
4. The civil aviation tire tread wear performance test method according to claim 3, wherein the vulcanization molding time is 20 to 60 minutes.
5. The civil aviation tire tread wear performance test method according to claim 4, wherein the wear performance test is carried out by an Akron wear tester, and the test process is carried out according to the GB/T1689-2014 method.
6. Use of a test method for civil aviation tire tread wear performance according to any one of claims 1 to 5 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 true 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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- 2022-08-25 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 (1)
| Title |
|---|
| 《阿克隆磨耗试验的简易制样方法》;田原 等;《轮胎工业》;20071031;第27卷(第10期);第633页左栏第1段-第634页右栏第1段及表1 * |
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