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Carbon black masterbatch rubber composition for tires and preparation method thereof

A technology of rubber composition and masterbatch, which is applied in the direction of special tires, tire parts, rolling resistance optimization, etc., and can solve problems such as high heat generation, difficult processing and application, and environmental hazards

Active Publication Date: 2014-03-26
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
[0006] Natural rubber masterbatch and its manufacturing method CN200580043791.5 and the manufacturing method of rubber wet masterbatch, rubber composition and tire CN201080012497.9 all adopt wet process to disperse carbon black into slurry, and mix with natural rubber latex The masterbatch prepared by mixing can provide a rubber composition for treads with significantly improved wear resistance, but has a high heat build-up

Method used

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  • Carbon black masterbatch rubber composition for tires and preparation method thereof
  • Carbon black masterbatch rubber composition for tires and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] 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.

[0066] Preparation of functional emulsion

[0067] 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.

[0068] 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 into ...

Embodiment 2

[0076] 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.

[0077] Preparation of functional emulsion

[0078] 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 pre...

Embodiment 3

[0087] 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.

[0088] Preparation of functional emulsion

[0089] 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.

[0090] 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 reactor, ...

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Abstract

The invention discloses a carbon black masterbatch rubber composition for tires and a preparation method thereof. The rubber composition contains 100 parts of main rubber and 0.5-3 parts of sulfurizing reagent, wherein the main rubber comprises carbon black masterbatch and diene rubber; the carbon black masterbatch is prepared by the following steps: dispersing carbon black in deionized water to form carbon black slurry, uniformly mixing with nano silicon dioxide / polymerized conjugated dialkene graft modified rubber latex, and condensing; nano silicon dioxide / polymerized conjugated dialkene function compound emulsion contains 0.1-5 parts of surface functional modified nano silicon dioxide based on 100 parts by mass of dry basis; the nano silicon dioxide / polymerized conjugated dialkene function compound emulsion has particle size of 50-80 nanometers, number-average molecular weight of 100000-140000 and molecular weight distribution of 2-3. The rubber composition has good abrasive resistance, good wet slip resistance, and low rolling resistance.

Description

technical field [0001] The present invention relates to a rubber composition, more specifically to a rubber composition containing carbon black masterbatch and used for tire tread. Background technique [0002] With the development of automobiles in the direction of high speed, safety, energy saving and comfort, the requirements for high performance tires are also increasing year by year, which requires tire treads to have good wet skid resistance, excellent wear resistance and low rolling resistance. [0003] Nano-silica, commonly known as white carbon black, is the second largest reinforcing agent used in the rubber industry after carbon black. Since the 1990s, silica has been widely used as a reinforcing filler in tire tread formulations, so that the above-mentioned "devil triangle" performance required by tire treads can be more clearly balanced. [0004] Qiu Quanfang (“Latex Blending Method” Natural Rubber / SiO2 Nanocomposite Microstructure and Performance Control, 201...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08L9/06C08L7/00C08K13/06C08K9/06C08K3/36C08K3/04C08F36/04C08F2/44C08F2/24C08J3/22B60C1/00
CPCY02T10/86
Inventor 赵志超胡育林马朋高郑聚成燕鹏华王永峰邵卫路祥李波李树毅李晶郑红兵陈建刚王锋丛日新占德生秦传高李铁柱
Owner PETROCHINA CO LTD
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