Application of continuously prepared rubber masterbatch to sidewall rubber of car tire

A technology for rubber masterbatch and car tires, applied in special tires, vehicle parts, tire parts, etc., can solve the problems of low heat generation, reduced mixing steps, and difficulty in dispersion, and achieve low heat generation and reduced mixing. Steps to solve the effect that is not easy to disperse

Active Publication Date: 2015-03-04
EVE RUBBER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the present invention, a continuous manufacturing process for preparing rubber masterbatch is adopted to prepare sidewall rubber for car tires and tires. Compared with traditional dry mixing process and sidewall rubber, this method improves the content of filler in rubber. Dispersion reduces the mixing steps and solves the problem that fillers are not easy to disperse during mixing. The sidewall rubber prepared by this method is excellent in filler dispersion, mechanical properties, and low heat generation. The tire sidewall prepared by this method is After the rubber is applied to the tire, the performance of the finished product can improve the tear resistance of the tire sidewall 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 to sidewall rubber of car tire
  • Application of continuously prepared rubber masterbatch to sidewall rubber of car tire
  • Application of continuously prepared rubber masterbatch to sidewall rubber of car tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Add 12 parts of white carbon black, 1 part of silane coupling agent, 8 parts of naphthenic oil and 2 parts of anti-aging agent 264 into 60 parts of n-hexane solution of cis-butadiene gum, after mixing, pour it into the coagulator continuously for coagulation, and then Solvent removal and drying afforded masterbatch 1-1. Add 45 parts of carbon black N660 to 40 parts of natural rubber in n-hexane solution, mix, inject continuously into the coagulator for coagulation, and then remove solvent and dry to obtain masterbatch 1-2.

[0059] Add masterbatch 1-1 and masterbatch 1-2 to the internal mixer according to the ratio of total rubber 100phr, mix evenly, add 3 parts of zinc oxide, 1.5 parts of stearic acid, 3 parts of anti-aging agent 4020, 2 parts of protective wax , 2 parts of octyl phenolic tackifying resin, after mixing, the next piece, parked for 8 hours, then added to the internal mixer and mixed evenly, after adding 0.75 parts of accelerator NS, 1.8 parts of sulfur, ...

Embodiment 2

[0061] 12 parts of white carbon black, 1 part of silane coupling agent, 8 parts of naphthenic oil, 2 parts of antioxidant 264, 3 parts of zinc oxide, 1.5 parts of stearic acid, 3 parts of antioxidant 4020, 2 parts of protective wax, octyl Add 2 parts of phenolic tackifying resin to 60 parts of n-hexane solution of butadiene rubber, mix, pour into the coagulator continuously for coagulation, and then remove solvent and dry to obtain masterbatch 2-1. Add 45 parts of carbon black N660 to 40 parts of natural rubber in n-hexane solution, mix, inject continuously into the coagulator for coagulation, and then remove solvent and dry to obtain masterbatch 2-2.

[0062] Add masterbatch 2-1 and masterbatch 2-2 to the internal mixer according to the ratio of total rubber 100phr, mix evenly, add 0.75 parts of accelerator NS, 1.8 parts of sulfur, and mix, after mixing, pass the roller and lower the sheet After the mixed rubber was parked for 8 hours, it was vulcanized to positive vulcanizat...

Embodiment 3

[0066] 50 parts of white carbon black, 4 parts of silane coupling agent, 8 parts of naphthenic oil, 2 parts of antioxidant 264, 3 parts of zinc oxide, 1.5 parts of stearic acid, 3 parts of antioxidant 4020, 2 parts of protective wax, octyl 2 parts of phenolic tackifying resin were added to 60 parts of butadiene rubber and 40 parts of natural rubber in n-hexane solution, after mixing, they were continuously poured into the coagulator for coagulation, and then the solvent was removed and dried to obtain masterbatch 3.

[0067] Add masterbatch 3 to the internal mixer evenly, add 0.75 parts of accelerator NS, 1.8 parts of sulfur, and then mix. After mixing, roll off the sheet. After the mixed rubber is parked for 8 hours, use a flat vulcanizer at 165 ° C. After down vulcanization to positive vulcanization, the vulcanizate 3 is prepared continuously. Tire 195 / 60R14 was prepared using continuous sidewall compound 3.

[0068] Table 4 Test performance of sidewall vulcanizate prepared...

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Abstract

The invention relates to an application of continuously prepared rubber masterbatch to the sidewall rubber of a car tire. The application comprises the following steps of: (a) adding a filler into a rubber solution, mixing, dispersing uniformly, injecting the dispersed mixture into a coagulator for coagulation, desolventizing and drying to obtain the rubber masterbatch; (b) adding the rubber masterbatch into a mixer, adding a vulcanizing agent and an accelerating agent and mixing uniformly to obtain a sidewall rubber compound for the car tire; and (c) vulcanizing the sidewall rubber compound for the car tire under a vulcanizing condition to obtain the vulcanized sidewall rubber compound for the car tire. The application further comprises the step of adding additives in the step (a) and/or the step (b), wherein the additives comprises one or more of a coupling agent, an anti-aging agent, an activating agent, oil and a thickening agent. The rubber in the rubber solution is one or one 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 of a continuously prepared rubber masterbatch in sidewall rubber of car tires and the application of the sidewall rubber in car tires. Background technique [0002] In the tire sidewall 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 kind of process has long mixing time, high energy consumption, high dust and poor dispersion. The degree of dispersion of the filler directly determines the performance of the rubber compound. Poor dispersion of the filler will greatly affect the mechanical properties of the sidewall vulcanizate and the quality of the tire product. limit. [0003] In recent years, the applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/22C08L7/00C08L9/00C08L9/06C08K13/02C08K3/36C08K3/04B29C35/02B29B7/74B60C1/00
Inventor 刘震王小菊王茂英吉欣宇
Owner EVE RUBBER RES INST
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