Oil-extended carbon-black-extended styrene-butadiene rubber master batch, and rubber composition and preparation method thereof

A technology of oil-extended carbon black butadiene-butadiene and black-butadiene-butadiene, applied in the field of rubber composition and its preparation, and in the field of styrene-butadiene masterbatch, can solve the problems of narrow PSN molecular weight distribution, difficulty in processing and application, and quality loss, and achieve The effect of good balance of physical properties, suitable molecular weight and molecular weight distribution, and excellent processability

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 the

Method used

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  • Oil-extended carbon-black-extended styrene-butadiene rubber master batch, and rubber composition and preparation method thereof
  • Oil-extended carbon-black-extended styrene-butadiene rubber master batch, and rubber composition and preparation method thereof

Examples

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Example Embodiment

[0059] Example 1

[0060] Surface functional modification of nano-silica: Weigh 150g of nano-silica and dry it in an oven for later use, then mix it with 1500g of toluene and ultrasonically disperse it fully. Add 300g of hydrolyzed VTES, stir and heat to 82°C and reflux for 3 hours. Then filter, wash, and vacuum dry.

[0061] (1) Preparation of functional emulsion

[0062] In the first step, the monomer pre-emulsion is prepared. 1,3-butadiene 1200g, sodium dodecylbenzene sulfonate 120g, deionized water 1800g, sodium hydroxide 12g, potassium persulfate 2.4g are mixed and pre-emulsified for 20 minutes to prepare a pre-emulsion.

[0063] The second step is to prepare functional emulsion with modified nano-silica as the core. Take 3.6g of surface functionalized modified nano silica and add it to a reactor containing 60g of sodium dodecylbenzene sulfonate and 480g of deionized water, stir and heat to 60℃, and then take 313g of monomer pre-emulsion Add to the reactor, control the tempera...

Example Embodiment

[0070] Example 2

[0071] According to the method disclosed in "Journal of Radiation Research and Radiation Technology", Volume 25, Issue 5, 2007, "Surface Modification of Nano-Silica and Radiation Initiated Grafting of GMA", the method for preparing surface-functionalized modified nano-silica: Weigh 10 g of nano-silica and dry it in an oven at 50°C for 5 hours, add the dried nano-silica into an aqueous solution containing 98 g of coupling agent MPS, and ultrasonically disperse for 1 hour. After dispersion, the mixture was stirred at 110°C for 8 hours. After filtering, the modified silica was washed with toluene, the resulting product was vacuum filtered and then subjected to Soxhlet extraction, and finally placed in an oven for drying.

[0072] (1) Preparation of functional emulsion

[0073] In the first step, the monomer pre-emulsion is prepared. 1200 g of isoprene, 72 g of sodium lauryl sulfate, 1200 g of deionized water, 6 g of ammonia, and 9.6 g of ammonium persulfate were mi...

Example Embodiment

[0081] Example 3

[0082] Surface functional modification of nano-silica: Weigh 240g of nano-silica and dry it in an oven for later use, then mix it with 4800g of xylene and ultrasonically disperse it fully, add 312g of hydrolyzed VTMS, stir and heat to 93°C and reflux for 4 hours , Then filter, wash, vacuum dry.

[0083] (1) Preparation of functional emulsion

[0084] In the first step, the monomer pre-emulsion is prepared. Prepared by mixing 1,3-pentadiene 1200g, sodium dodecylbenzene sulfonate 40g, alkylphenol polyoxyethylene ether 200g, deionized water 1920g, sodium carbonate 9.6g and sodium persulfate 9.8g for 30 minutes Into a pre-emulsion.

[0085] The second step is to prepare functional emulsion with modified nano-silica as the core. Take 54g of surface-functionalized modified nano silica and add it to the reactor containing 54g of fatty acid soap and 456g of deionized water, stir and raise the temperature to 68°C, then take 676g of monomer pre-emulsion into the reactor, c...

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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 blending 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 Master batch (Carbon Black Master batch, CBMB) refers to a rubber compound mixed with carbon black and other fillers in rubber. It can be a pre-mixed semi-finished rubber compound or a final rubber formula. material. [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 ...

Claims

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Application Information

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IPC IPC(8): C08L9/08C08L9/00C08L91/00C08K13/06C08K9/06C08K3/36C08K3/04C08K3/22C08K5/09C08K3/06C08F136/04C08F136/06C08F136/08C08F2/44
Inventor 赵志超梁滔胡育林马朋高燕鹏华邵卫胡海华王永峰李波郑聚成李晶郑红兵陈建刚王锋丛日新翟云芳赵洪国
Owner PETROCHINA CO LTD
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