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Application of continuously prepared rubber masterbatch in tread rubber of truck tire

A technology for rubber masterbatch and truck tires, which is applied in the field of tire rubber compound production. It can solve the problems of adding silica and mixing, which is difficult to disperse, reduce tire rolling resistance, and reduce mixing steps, etc., to achieve low heat generation, superior, Reduced rolling resistance, effect of fewer kneading steps

Inactive Publication Date: 2015-02-25
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention adopts the manufacturing process of continuous preparation of rubber and filler masterbatch to prepare tread rubber and tires for truck tires. Compared with traditional dry mixing process and tread rubber, this method improves the content of filler in rubber The degree of dispersion in the rubber compound reduces the mixing steps and solves the problem that the addition of white carbon black is not easy to disperse. The tread rubber prepared by this method has the advantages of filler dispersion, mechanical properties, wear resistance, low heat generation, etc. All are very superior. After the tread rubber prepared by this method is applied to truck tires, the performance of the finished product can improve the wear performance of the tire and reduce the rolling resistance of the tire on the premise of ensuring the basic safety performance of the tire.

Method used

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  • Application of continuously prepared rubber masterbatch in tread rubber of truck tire
  • Application of continuously prepared rubber masterbatch in tread rubber of truck tire
  • Application of continuously prepared rubber masterbatch in tread rubber of truck tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Add 50 parts of carbon black JW160 into 100 parts of 8% natural rubber in n-hexane solution, mix, inject continuously into the coagulator for coagulation, then spray off the solvent and dry to obtain masterbatch A.

[0056] Add masterbatch A to the internal mixer evenly, add 3.5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of anti-aging agent 4020, 1.5 parts of anti-aging agent RD, and 2 parts of protective wax. Add 1.3 parts of accelerator NS and 1.3 parts of sulfur to the internal mixer after 1 hour. After mixing, pass the roller and release the sheet. After the mixed rubber is parked for 8 hours, use a flat vulcanizer to vulcanize at 150°C until it is fully vulcanized. Finally, the continuous preparation of vulcanizate is obtained. A tire with a specification of 11R22.5 was prepared by continuously preparing the tread compound.

[0057] Table 4 embodiment 1 and comparative example 1 test performance

[0058]

[0059]

[0060] Table 5 Dry method and c...

Embodiment 2

[0066] Add 53 parts of carbon black N234 to 100 parts of 8% natural rubber n-hexane solution, then add 1.5 parts of anti-aging agent RD and 2 parts of anti-aging agent 4020, after mixing, continuously inject into the coagulator for coagulation, and then spray off the solvent And dry to obtain masterbatch A.

[0067] After adding masterbatch A to the internal mixer evenly, add 3.5 parts of zinc oxide, 2 parts of stearic acid, and 2 parts of protective wax. 1 part of accelerator NS, 1.3 parts of sulfur. After mixing, roll off the sheet. After the mixed rubber is parked for 8 hours, it is vulcanized to positive vulcanization with a flat vulcanizer at 150 ° C to obtain a continuous vulcanized rubber.

[0068] Table 6 embodiment 2 and comparative example 2 test performance

[0069]

[0070] It can be seen from Table 6 that the tensile strength, heat generation, abrasion and TanDelta60°C of vulcanizates prepared by continuous method are better than those prepared by dry mixing.

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Abstract

The invention relates to application of continuously prepared rubber masterbatch in tread rubber of a truck tire. The application comprises the following steps: a) adding carbon black into a rubber solution, uniformly mixing, dispersing and injecting into a coagulator for coagulating, spraying a solvent remover and drying to obtain the rubber masterbatch; b) adding the rubber masterbatch into an internal mixer, adding a vulcanizing agent and an accelerator and uniformly mixing to obtain a rubber compound for the truck tire tread; and c) vulcanizing the rubber compound for the truck tire tread under vulcanizing conditions to obtain vulcanized rubber for the truck tire tread, wherein a step of adding an additive is performed in the step a) and / or step b), and the additive comprises one or more of a coupling agent, an anti-aging agent, an active agent, oil and other processing aids and the rubber is one or more of natural rubber, polybutadiene rubber, polyisoprene rubber and polystyrene-butadiene rubber.

Description

technical field [0001] The invention relates to the field of tire rubber compound production, in particular to the preparation and application of a continuously prepared rubber masterbatch in truck tire tread rubber. Background technique [0002] In the tire tread rubber preparation process, the traditional method of mixing the fillers and additives in the formula into the rubber is to use large-scale mixing equipment, such as internal mixers, kneaders, and open rubber mixers, to mix powder or Liquid fillers and additives are mixed into solid rubber. This process has long mixing time, high energy consumption, high dust and poor dispersion. The degree of dispersion of the filler directly determines the interaction between the filler and the polymer, thereby affecting the wear resistance of the tire tread rubber. Therefore, poor dispersion of the filler will Make the mechanical properties of tread vulcanizate and tire product quality be very limited. [0003] In recent years...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/22C08L7/00C08K13/02C08K3/04B29C35/02B29B7/74
Inventor 周宏斌王宝金石超丁元强
Owner EVE RUBBER RES INST
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