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Rubber, preparation method thereof, rubber composition and vulcanized rubber

A technology of rubber composition and rubber glue, which is applied in the field of rubber, can solve the problems of limited addition of silica, poor dispersion of silica, and poor mechanical properties, and achieve excellent mechanical properties.

Active Publication Date: 2018-07-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor dispersibility of silica in rubber when using existing methods to add silica to rubber, and it is difficult to realize the fusion of silica and rubber to form a tight complex, resulting in rubber products. The mechanical properties of the rubber are not good or the number of additions of silica is limited under the premise of maintaining the mechanical properties, and a new rubber preparation method, rubber prepared by the method, rubber composition containing the rubber, and Vulcanized rubber obtained by vulcanizing the rubber composition

Method used

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  • Rubber, preparation method thereof, rubber composition and vulcanized rubber
  • Rubber, preparation method thereof, rubber composition and vulcanized rubber
  • Rubber, preparation method thereof, rubber composition and vulcanized rubber

Examples

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preparation example Construction

[0019] The rubber preparation method provided by the present invention includes adding white carbon black into the obtained rubber glue solution and mixing uniformly during the rubber preparation process, and then removing the solvent in the glue solution.

[0020] The present invention has no special limitation on the type of the rubber glue, such as various existing rubber glues, for example, it can be solution polystyrene butadiene rubber glue, solution polybutadiene rubber glue, solution polyisoamyl At least one of diene rubber glue and soluble polystyrene thermoplastic elastomer glue, preferably solution polystyrene butadiene rubber glue.

[0021] The rubber glue can be obtained commercially, or can be prepared according to various methods known to those skilled in the art. According to a specific embodiment of the present invention, the rubber glue is prepared according to the following method: in the presence of an initiator, the olefin monomer is polymerized in a solve...

preparation example 1

[0039] This preparation example is used to illustrate the rubber provided by the present invention and its preparation method.

[0040] The mass fraction that 5kg is taken from the solution polymerization butadiene-styrene rubber production device is the oil-extended polystyrene-butadiene rubber glue SSBR2535E of 10% by weight (the solvent wherein is the mixture of normal hexane and hexanaphthene, is industrial grade, the weight ratio of n-hexane to cyclohexane is 85:15, and its performance index is shown in Table 1, the same below) into a 50L enamel stirred tank and kept stirring, wherein, the temperature inside the enamel stirred tank is 50°C, and the stirring rate 300rpm. Add 1 kg of n-hexane at room temperature to a 20L enamel stirring tank, and gradually add 300g of white carbon black. After all the white carbon black is added, start stirring and stir at room temperature and 300rpm for 5 minutes, and then use a pipeline grinder to grind for 10 minutes to obtain white carb...

preparation example 2

[0042] This preparation example is used to illustrate the rubber provided by the present invention and its preparation method.

[0043] Add 5 kg of oil-extended soluble polystyrene-butadiene rubber glue SSBR2535E with a mass fraction of 10% by weight taken from the solution polymerization butadiene-styrene rubber production device into a 50L enamel stirring tank and keep stirring, wherein, in the enamel stirring tank The temperature was 60°C and the stirring rate was 200 rpm. Add 1 kg of n-hexane at room temperature into a 20L enamel stirring kettle, gradually add 400g of white carbon black, and after all the white carbon black is added, start stirring and stir at room temperature and 200rpm for 10 minutes, and then use a pipeline grinder to grind for 10 minutes to obtain A dispersion liquid having a silica content of 28.57% by weight and a silica particle diameter D90 of 6.8 μm. Then turn on the bottom switch of the 20L enamel stirring tank under the condition of starting st...

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Abstract

The invention relates to the field of rubbers, and discloses a rubber, a preparation method thereof, a rubber composition and a vulcanized rubber. The preparation method of the rubber comprises the following steps: adding white carbon black to a rubber solution in the rubber preparation process, uniformly mixing the rubber solution and the white carbon black, and then removing a solvent from the rubber solution. The rubber is prepared by the method, so the white carbon black has good dispersibility in a rubber base rubber, the filling fraction of the white carbon black greatly exceeds that ofa conventional carbon black mixing method, and the white carbon black still has good dispersibility, so the obtained rubber has excellent mechanical properties when used to manufacture tires, and hasa great industrial application prospect.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a method for preparing rubber, rubber prepared by the method, a rubber composition containing the rubber and a vulcanized rubber obtained by vulcanizing the rubber composition. Background technique [0002] Solution-polymerized styrene-butadiene rubber is a rubber formed by the polymerization of butadiene and styrene in a solvent. It has the advantages of small rolling resistance, excellent wet skid resistance and wear resistance. It is used in the tire industry, especially green tires, anti-skid It is widely used in high-performance tires such as tires and ultra-lightweight tires. White carbon black is the general term for white powder X-ray amorphous silicic acid and silicate products, mainly refers to precipitated silica, fumed silica and ultrafine silica gel, and also includes powdered synthetic silicic acid aluminum and calcium silicate etc. Silica also has super strong adhesion, tea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K13/02C08K3/36
CPCC08K3/36C08K13/02C08L9/06
Inventor 钟林王冬萍包巧云周爱霞
Owner CHINA PETROLEUM & CHEM CORP
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