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Improved tread rubber material and preparation method thereof

A tread rubber and tread technology, which is applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of reduced and increased tire performance and service life, and achieve the effect of improving interaction.

Active Publication Date: 2015-05-27
SHANGHAI TIRE & RUBBER TIRE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of improved tread rubber material and its preparation method, and described this improved tread rubber material and its preparation method will solve the raising of tire temperature caused by heat in the prior art Technical problems that lead to a reduction in tire performance and service life

Method used

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  • Improved tread rubber material and preparation method thereof
  • Improved tread rubber material and preparation method thereof
  • Improved tread rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, described tread rubber, the rubber material component that carries out proportioning by mass ratio is:

[0023]

[0024] For above formula content, the specific technological process of producing described tread rubber is as follows:

[0025] (1) One stage of mixing

[0026] Add natural rubber (NR), butadiene rubber (BR), carbon black and azodicarbonamide into the internal mixer and knead for 2 minutes; raise the top bolt for cleaning. Lower the top bolt and continue mixing. When the temperature is 160°C, keep mixing for 4.5 minutes, then remove the glue, unload the sheet, cool, collect the sheet, and park for at least 10 hours to obtain a section of mixed rubber.

[0027] (2) Two-stage mixing

[0028] Blend a section of rubber compound, stearic acid (SA), zinc oxide (ZnO), anti-aging agent RD, 50% anti-aging agent 4020, and protective wax for 1.5 minutes, then raise the top bolt for cleaning. Lower the top bolt and continue mixing until the internal...

Embodiment 2

[0059] For the tread rubber, the weight ratio of natural rubber and butadiene rubber in the formula is adjusted to 65:35, and the distribution ratio of all other components is shown in Table 3. The final rubber mixing process, vulcanization process and other conditions are the same as in Example 1. The vulcanized rubber samples were made into standard specimens, and various mechanical tests, wear resistance tests, and compression heat generation tests were carried out. The results are shown in Table 4.

[0060] The specific mixing process of rubber segment is as follows:

[0061] a mixing

[0062] Add NR, BR, carbon black and azodicarbonamide to the internal mixer and knead for 2 minutes; raise the top bolt for cleaning. Lower the top bolt and continue mixing. When the temperature is 154°C, keep mixing for 4.5 minutes, then remove the glue, unload the sheet, cool, collect the sheet, and park for at least 10 hours to obtain a section of mixed rubber.

[0063] two stage mixin...

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Abstract

The invention provides an improved tread rubber material. The improved tread rubber material is prepared from the following raw materials in parts by weight: 50-90 parts of natural rubber, 10-50 parts of butadiene rubber, 1-3 parts of azodicarbonamide, 40-55 parts of tread reinforcing agent, 2-3 parts of anti-aging agent, 1-4 parts of vulcanizing activator, 1-4 parts of vulcanization accelerator, 0.1-0.45 parts of scorch retarder, 1-3 parts of vulcanizing agent and 1-2 parts of tread fracturing preventing agent. The invention further provides a preparation method of the improved tread rubber material. The method provided by the invention is a new method for improving tread rubber wearing resistance and reducing heat; by virtue of added azodicarbonamide, the interaction between rubber and carbon black can be improved, and the tread rubber has better wearing resistance and lower compression heat generation; meanwhile, the preparation method of the tread is simple in process and easy for industrialization.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a tire material, in particular to an improved tread rubber material and a preparation method thereof. Background technique [0002] The interaction between the filler and the rubber matrix plays a very important role in the improvement of the properties of the rubber, such as hysteresis and wear. The dynamic performance of the rubber will increase with the increase of the interaction between the filler and the rubber matrix. Carbon black, as the most commonly used reinforcing agent for rubber, can impart higher modulus, strength and abrasion resistance to rubber. However, due to the prolongation of the stress recovery time after the rubber molecules are bound by the carbon black, and the destruction and reconstruction of the carbon black network structure, the hysteresis heat generation of the rubber will increase accordingly. The heat generation of tires, the increa...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K3/04C08K5/23C08K3/22C08K5/09C08K3/06C08K5/47B29B7/28B60C1/00
CPCB29B7/286C08L7/00C08L2205/03C08L9/00C08L91/06C08K13/02C08K5/23C08K3/04C08K5/09C08K2003/2296C08K3/06
Inventor 陶慧汪灵
Owner SHANGHAI TIRE & RUBBER TIRE RES INST
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