Environmental aging simulation test method for sizing material

A technology for simulating testing and sizing, which is applied in measuring devices, analytical materials, instruments, etc., can solve the problems of high price and long testing time, and achieve the effect of simple method, good correlation and wide application range.

Active Publication Date: 2016-07-20
SHANDONG LINGLONG TIRE
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The detection methods in the prior art have limitations (cannot be used for rubber ...

Method used

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  • Environmental aging simulation test method for sizing material

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Embodiment Construction

[0020] The invention provides a rubber environment aging simulation test method, the steps are as follows:

[0021] 1) vulcanize the rubber material, the method of the present invention can simulate the environmental aging of different formula rubber materials; and the film after vulcanization can be cut according to different test items (such as dumbbell-shaped samples, rectangular samples);

[0022] 2) Bond the cut film to the center of the groove of the rim, and distribute the sample intervals evenly on the rim; and each film cannot be in contact with the rim, and the interval between each film is 50mm;

[0023] 3) Install the tire matching the rim size to obtain the tire, rim and film assembly;

[0024] 4) Pour compressed air into the tire, put the assembled tire in the water tank for at least 30 minutes, check whether there is air leakage at the bead and valve, if there is no air leakage, park it at ambient temperature for more than 24 hours, put the tire inside The comp...

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Abstract

The invention relates to an environmental aging simulation test method for a sizing material. The method comprises the following steps: 1) vulcanizing and cutting the sizing material; 2) adhering the cut sizing piece to a central part of a rim groove; 3) installing a tire matched with the size of a rim to obtain a tire, rim and sizing piece assembly; 4) filling compressed air into the tire, keeping stand for more than 24 hours at an ambient temperature if no air leaks, and replacing the compressed air in the tire with a nitrox mixture; 5) putting the tire, rim and sizing piece assembly into an aging oven, aging for 8 weeks at a temperature of 65 DEG C, and re-filling the nitrox mixture once every two weeks; 6) then removing the tire, and taking down the sizing piece from the rim and then carrying out a related physical property test. The method has the beneficial effects that the environmental aging test of the sizing material can be directly carried out, the correlation is good, the method is simple, and the application range is wide.

Description

technical field [0001] The invention relates to a rubber environment aging simulation test method. Background technique [0002] Environmental aging of tires is also called thermo-oxidative aging. Its mechanism is that the action of heat will accelerate chemical changes such as cross-linking and degradation of rubber materials. The macroscopic manifestations are changes in physical and mechanical properties. Some properties have a single change relationship with aging time, such as tearing elongation, stress relaxation coefficient, compression set rate, etc. [0003] Tires are used for a long time in actual use, and they are often subjected to external factors such as heat, light, nitrogen oxygen, and ozone. The chemical composition of the rubber material, molecular structure and other factors cause changes in the physical properties of the rubber. an irreversible chemical change. Once the rubber is aged, not only the appearance of the tire will be cracked, but also the tr...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00G01N17/002
Inventor 王锋王波姜君正李亮张丽杰蔡志兴
Owner SHANDONG LINGLONG TIRE
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