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Screening method of under-inflation protection tire supporting rubber, obtained supporting rubber and tire containing supporting rubber

A technology for run-flat tires and a screening method, applied in the field of tire manufacturing, can solve problems such as limited effective data and differences in the use of support rubber.

Active Publication Date: 2020-10-20
ZHONGCE RUBBER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When developing the support rubber formula, the effective data obtained purely from the physical properties of the rubber material, sulfur change, and DMA are limited, and there are certain differences from the actual use of the support rubber.

Method used

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  • Screening method of under-inflation protection tire supporting rubber, obtained supporting rubber and tire containing supporting rubber
  • Screening method of under-inflation protection tire supporting rubber, obtained supporting rubber and tire containing supporting rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following is a specific example to further illustrate this test method. Taking our company's production specification 225 / 55R17 as an example, it is just an example, and the test conditions are not limited to examples:

[0026] Deformation frequency of support rubber = 10.1hz;

[0027] The actual maximum temperature of the infrared temperature measurement support rubber machine tool is 150°C;

[0028] The maximum deformation is 15%.

[0029] The conditions for converting the above conditions to time scanning are: vulcanization 160°C*15min, temperature 150°C; strain 15%; frequency 10HZ; time scanning range 0.5-28min. The test can obtain the initial value of the support rubber modulus (G') and the change of the support rubber modulus within 28 minutes. Take the 5 formulas of support rubber developed by our company as an example. Carry out a time scan on the supporting collagen material, take a point every 2 minutes, and record G'. Make a modulus G' / time time diagra...

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Abstract

The invention relates to the field of tire manufacturing, in particular to a screening method of under-inflation protection tire supporting rubber, the obtained supporting rubber and a tire containingthe supporting rubber. According to the invention, the method comprises the following steps: 1) carrying out time scanning test on the support rubber by using a rubber processing analysis instrument;2) taking the difference delta G ' (G' initial-G 'end) between the initial elastic modulus G' initial of the support glue under time scanning and the test initial elastic modulus and the test end elastic modulus of the support glue; and 3) selecting the support rubber of which G' is greater than or equal to 4000kpa and less than or equal to 3000kpa and delta G ' is greater than or equal to 500kpaand less than or equal to 0, and the smaller the delta G' value is, the better the stability and the performance of the support rubber are. The detection method is accurate in detection and can accurately evaluate the performance of the support rubber in combination with the actual running condition of the support rubber.

Description

technical field [0001] The present application relates to the field of tire manufacturing, in particular to a screening method for a run-flat tire support rubber, the obtained support rubber and a tire containing the support rubber. Background technique [0002] With the rapid development of the tire industry, people's safety requirements for using tires are increasing day by day. When a traditional tire is punctured, it will lose pressure immediately, and the tire will be detached from the rim within a few seconds, causing the vehicle to lose its support and balance, posing a serious threat to driving safety. Run-flat tires can ensure that the car can run stably for a certain mileage at a speed of 80km / h when the tire loses pressure, thereby improving the safety of tire use. [0003] At present, self-supporting run-flat tires are mainly used in the market, such as figure 1 As shown, the main principle is to install a component with a certain supporting force on the sidewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/44B60C17/00
CPCG01N33/445B60C17/00
Inventor 王丹灵倪宝陈生白浩郭磊磊邢伟运
Owner ZHONGCE RUBBER GRP CO LTD
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