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Oil-extended carbon black styrene-butadiene masterbatch for tire tread, rubber composition and preparation method thereof

A technology of black styrene-butadiene mother and styrene-butadiene rubber, which is applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of environmental hazards, difficult dispersion, quality loss, etc., and achieves good stability, good mixing effect, Particle size controllable effect

Active Publication Date: 2016-07-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because polybutadiene / silica composites are prepared by solution polymerization using n-butyllithium as an initiator, a large amount of organic solvents are used in the preparation process, which is not only harmful to the environment, but also macromolecules It is difficult for the chain to contain and coagulate all the silica particles, and there will be a loss of quality. At the same time, it may also aggregate in the co-coagulation gel matrix, making it difficult to achieve good dispersion
In addition, the PSN prepared by the solution polymerization method has a narrow molecular weight distribution, and there are certain difficulties in the application process of rubber post-processing

Method used

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  • Oil-extended carbon black styrene-butadiene masterbatch for tire tread, rubber composition and preparation method thereof
  • Oil-extended carbon black styrene-butadiene masterbatch for tire tread, rubber composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Surface functional modification of nano-silica: Weigh 150g of nano-silica and dry it in an oven for use, then mix it with 1500g of toluene and ultrasonically disperse fully, add 300g of hydrolyzed VTES, stir and heat to 82°C for 3 hours to reflux, It is then filtered, washed and dried in vacuum.

[0063] (1) Preparation of functional emulsion

[0064] The first step is the preparation of monomer pre-emulsion. 1,200 g of 1,3-butadiene, 120 g of sodium dodecylbenzenesulfonate, 1,800 g of deionized water, 12 g of sodium hydroxide, and 2.4 g of potassium persulfate were mixed and pre-emulsified for 20 minutes to prepare a pre-emulsion.

[0065] In the second step, the functional emulsion is prepared with the modified nano-silica as the core. Take 3.6g of nano-silica modified by surface functionalization and add it to a reactor containing 60g sodium dodecylbenzenesulfonate and 480g deionized water, stir and heat up to 60°C, and then take 313g monomer pre-emulsion Add it i...

Embodiment 2

[0075] According to the method disclosed in "Journal of Radiation Research and Radiation Technology", Volume 25, No. 5, "Study on Surface Modification of Nano-Silicon Dioxide and Radiation-Initiated Grafting GMA" in 2007, the nano-silicon dioxide method for surface functional modification: Weigh 10g of nano-silica and dry it in an oven at 50°C for 5 hours, add the dried nano-silica to an aqueous solution in which 98g of coupling agent MPS is dissolved, and ultrasonically disperse for 1 hour. After dispersion, the mixture was stirred at 110°C for 8h. After filtration, the modified silicon dioxide was washed with toluene, and the obtained product was vacuum filtered, extracted by Soxhlet, and finally dried in an oven.

[0076] (1) Preparation of functional emulsion

[0077] The first step is the preparation of monomer pre-emulsion. 1200 g of isoprene, 72 g of sodium lauryl sulfate, 1200 g of deionized water, 6 g of ammonia water, and 9.6 g of ammonium persulfate were mixed and...

Embodiment 3

[0088] Surface functional modification of nano-silica: Weigh 240g of nano-silica and dry it in an oven for use, then mix it with 4800g of xylene and ultrasonically disperse fully, add 312g of hydrolyzed VTMS, stir and heat to 93°C for 4 hours to reflux , then filtered, washed, and dried in vacuum.

[0089] (1) Preparation of functional emulsion

[0090] The first step is the preparation of monomer pre-emulsion. Prepare by mixing 1200g of 1,3-pentadiene, 40g of sodium dodecylbenzenesulfonate, 200g of alkylphenol polyoxyethylene ether, 1920g of deionized water, 9.6g of sodium carbonate and 9.8g of sodium persulfate for 30 minutes into a pre-emulsion.

[0091] In the second step, the functional emulsion is prepared with the modified nano-silica as the core. Get 54g of surface-functionalized modified nano-silica and add it to a reactor equipped with 54g fatty acid soap and 456g deionized water, stir and heat up to 68°C, then get 676g monomer pre-emulsion and add it to the react...

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Abstract

The invention relates to an oil-extended carbon-black-extended styrene-butadiene rubber master batch, and a rubber composition and a preparation method thereof. The oil-extended carbon-black-extended styrene-butadiene rubber master batch is prepared by mixing and condensing an extender oil, carbon black slurry and a silicon dioxide / poly-conjugated diene modified styrene-butadiene rubber latex, wherein the silicon dioxide / poly-conjugated diene modified styrene-butadiene rubber latex is prepared by carrying out graft polymerization on a nano silicon dioxide / poly-conjugated diene functional composite emulsion and a styrene-butadiene rubber latex; and the functional composite emulsion introduces the nano silicon dioxide onto the molecular chain of the poly-conjugated diene. The rubber master batch and rubber composition disclosed by the invention greatly lower the generated heat when being used in tire treads, and have the comprehensive properties of excellent wet-road holding capacity and excellent abrasion resistance.

Description

technical field [0001] The present invention relates to an oil-extended carbon black styrene-butadiene masterbatch, a rubber composition and a preparation method thereof, in particular to an oil-extended carbon black-extended styrene-butadiene used for tire treads and capable of improving tire performance Masterbatch, rubber composition and method for its preparation. Background technique [0002] Carbon Black Masterbatch (CarbonBlackMasterbatch, CBMB) refers to a rubber compound mixed with carbon black and other fillers. It can be a pre-mixed rubber semi-finished product or a final rubber compound. [0003] The preparation of carbon black masterbatch is divided into dry method and wet method. Dry-process masterbatch can be mixed with solid rubber and carbon black by strong mechanical shearing with conventional mixing equipment. This method is simple in process and easy to operate, and can be produced in ordinary rubber factories. The disadvantage is that carbon black has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L9/00C08K13/06C08K9/06C08K3/36C08K3/04C08F36/04C08F2/44C08F2/24C08J3/22B60C1/00
Inventor 赵志超龚光碧马朋高胡育林燕鹏华邵卫李波王永峰翟云芳郑聚成李晶赵洪国陈建刚胡海华丛日新郑红兵
Owner PETROCHINA CO LTD
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