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

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

Example Embodiment

[0022] In Example 1, the tread rubber, the components of the rubber compound proportioned according to the mass ratio are:

[0023]

[0024] In view of the content of the above formula, the specific process of producing the tread rubber is as follows:

[0025] (1) One stage mixing

[0026] Add natural rubber (NR), butadiene rubber (BR), carbon black and azoformamide into the internal mixer for mixing for 2 minutes; lift the top plug and clean it. Lower the top plug and continue mixing. When the temperature is 160°C, keep mixing for 4.5 minutes, discharge, unload, cool, retract, and park for at least 10 hours to obtain a mixed rubber.

[0027] (2) Two-stage mixing

[0028] A stage of mixed rubber, stearic acid (SA), zinc oxide (ZnO), antioxidant RD, 50% antioxidant 4020, and protective wax were blended for 1.5 minutes, and then the top plug was raised and cleaned. Lower the top plug, continue mixing until the internal temperature of the batch reaches 145°C, keep mixing for 1.5 minutes,...

Example Embodiment

[0058] Example 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 ratios of the remaining groups are 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 samples, and various mechanical tests, abrasion tests, and compression heat generation tests were performed. The results are shown in Table 4.

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

[0061] One stage mixing

[0062] Add NR, BR, carbon black and azoformamide to the internal mixer and mix for 2 minutes; lift the top plug to clean. Lower the top plug and continue mixing. When the temperature is 154°C, keep mixing for 4.5 minutes, discharge, unload, cool, retract, and park for at least 10 hours to obtain a mixed rubber.

[0063] Two-stage mixing

[0064] Blend a section of rubber compo...

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PUM

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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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