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Rubber reinforcing agent, preparation method thereof, and preparation method of butadiene styrene rubber

A technology of rubber reinforcing agent and substituent is applied in the field of preparation of high-strength styrene-butadiene rubber, which can solve the problems of difficult to control polymerization process, complex polymerization monomer components, and large difference in monomer reactivity ratio.

Inactive Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method polymerizes complex monomer components, the difference in monomer reactivity rate is large, and the polymerization process is difficult to control

Method used

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  • Rubber reinforcing agent, preparation method thereof, and preparation method of butadiene styrene rubber
  • Rubber reinforcing agent, preparation method thereof, and preparation method of butadiene styrene rubber
  • Rubber reinforcing agent, preparation method thereof, and preparation method of butadiene styrene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Styrene and vinyltriethoxysilane monomers are mixed at a molar ratio of 1:1, and a monomer solution with a mass concentration of 10% is configured with toluene solvent, and 0.01% mol of the monomer is added to the solution Catalyst, isolated from air and water, after reacting at 25°C for 2 hours, use a vacuum desolventizer to remove the toluene solvent to obtain a styrene-butadiene rubber reinforcing agent.

[0054] Add styrene-butadiene latex (100 parts on a dry basis), 5 parts by mass of the above-mentioned rubber reinforcing agent and 0.01 parts by mass of potassium persulfate initiator to the polymerization kettle, control the reaction temperature to 60 ° C, and react for 3 hours. After the reaction, The emulsion is coagulated, washed and dried to obtain high-strength styrene-butadiene rubber products. After testing, compared with the tensile strength of ordinary styrene-butadiene rubber (18.6MPa), the tensile strength of the reinforced styrene-butadiene rubber in ...

Embodiment 2

[0059] Mix styrene and vinyldiethoxymethylsilane monomers in a molar ratio of 1:0.1, configure a monomer solution with a mass concentration of 30% with toluene solvent, and add 0.04% mol of monomers to the solution Catalyst, isolated from air and water, after reacting at 25°C for 8 hours, use a vacuum desolventizer to remove the toluene solvent to obtain a styrene-butadiene rubber reinforcing agent.

[0060] Add styrene-butadiene latex (100 parts on a dry basis), 45 parts by mass of the above-mentioned rubber reinforcing agent and 0.1 parts by mass of benzoyl peroxide initiator to the polymerization kettle, control the reaction temperature to 40 ° C, and react for 5 hours. The reacted emulsion is coagulated, washed and dried to obtain a high-strength styrene-butadiene rubber product. After testing, compared with the tensile strength of ordinary styrene-butadiene rubber (19.6MPa), the tensile strength of the reinforced styrene-butadiene rubber in Example 2 is 25.9MPa, which is...

Embodiment 3

[0065] Mix methylstyrene and vinyltrimethoxysilane monomers at a molar ratio of 1:5, configure a monomer solution with a mass concentration of 1% with toluene solvent, and add 0.10% mol of the monomer to the solution Catalyst, isolated from air and water, after reacting at 25°C for 0.5h, use a vacuum desolventizer to remove the toluene solvent to obtain a styrene-butadiene rubber reinforcing agent.

[0066] Add styrene-butadiene latex (100 parts on a dry basis), 15 parts by mass of the above-mentioned rubber reinforcing agent and 0.08 parts by mass of cumene peroxide initiator to the polymerization kettle, control the reaction temperature to 65 ° C, and react for 10 h. The reacted emulsion is coagulated, washed and dried to obtain a high-strength styrene-butadiene rubber product. After testing, compared with the tensile strength of ordinary styrene-butadiene rubber (20.1 MPa), the tensile strength of the reinforced styrene-butadiene rubber in Example 3 is 25.5 MPa, which is 2...

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Abstract

The invention provides a rubber reinforcing agent, a preparation method thereof, and a preparation method of butadiene styrene rubber. In the invention, firstly the rubber reinforcing agent having excellent reaction activity with butadiene styrene rubber latex is synthesized in a manner of mixing an aromatic compound containing an alkene unsaturated substituent and an organic siloxane monomer containing an alkene unsaturated substituent, adding an olefin metathesis catalyst and performing a normal-temperature reaction in a methylbenzene solvent with air and water isolated, and removing the methylbenzene solvent through a vacuum desolventizer to prepare the rubber reinforcing agent. The high-strength butadiene styrene rubber is prepared by feeding the rubber reinforcing agent and the butadiene styrene rubber latex into a polymerization kettle according to ratio with addition of an initiator, and performing a reaction for a certain time with reaction temperature controlled, and coagulating, washing and drying the product.

Description

technical field [0001] The invention relates to a rubber reinforcing agent and a preparation method thereof, and a preparation method of styrene-butadiene rubber, in particular to a styrene-butadiene rubber reinforcing agent prepared by using an olefin metathesis catalyst, and the styrene-butadiene reinforcing agent and styrene-butadiene latex Carrying out graft polymerization to obtain a preparation method of high-strength styrene-butadiene rubber. Background technique [0002] The strength of styrene-butadiene rubber is low, generally only 2.3-6.5MPa, and its strength is mainly improved by the reinforcing agent in the post-processing process, generally up to 21.5-24.5MPa. In recent years, the in-situ reinforcement technology of rubber and the surface modification technology of nano powder have been widely used. 200910092836.8 The method of silicon in-situ hybridization graft modification containing polyconjugated diene latex, introducing organosiloxane into the unsaturate...

Claims

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Application Information

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IPC IPC(8): C07F7/18C08F279/02C08F230/08
Inventor 艾纯金王伟张海霞曹凤霞何颖董静朱晶付含琦梁滔高阳光王卫东郑聚成陈建刚李树毅全民强
Owner PETROCHINA CO LTD
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