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Rubber reinforcing agent, preparation method thereof, and prepared method for reinforced nitrile butadiene rubber

A technology of rubber reinforcing agent and nitrile rubber, which is applied in chemical instruments and methods, catalysts for physical/chemical processes, compounds of elements of Group 4/14 of the periodic table, etc. Problems such as complex monomer composition and difficult to control polymerization process

Active 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 prepared method for reinforced nitrile butadiene rubber
  • Rubber reinforcing agent, preparation method thereof, and prepared method for reinforced nitrile butadiene rubber
  • Rubber reinforcing agent, preparation method thereof, and prepared method for reinforced nitrile butadiene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Acrylonitrile 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 0.05% mol of monomers are added to the solution The catalyst was isolated from air and water, and reacted at room temperature for 2 hours, and the toluene solvent was removed by a vacuum desolventizer to obtain a nitrile rubber reinforcing agent.

[0059] Acrylonitrile, butadiene and the above-mentioned acrylonitrile-butadiene rubber reinforcing agent are put into the polymerization kettle according to the ratio of 28 / 70 / 2 according to the mass ratio, add fatty acid sodium emulsifier accounting for 5 parts of total monomer mass, 180 parts of soft water and 0.05 parts of cumene hydroperoxide initiator, control the reaction temperature to 5° C., and the reaction pressure to 2.0 MPa, and react for 8 hours. After the reaction, the latex is coagulated, washed and dried to obtain a high-strength nit...

Embodiment 2

[0064] Mix acrylonitrile and vinyldiethoxymethylsilane monomers at a molar ratio of 1:0.1, configure a monomer solution with a mass concentration of 30% with toluene solvent, and add 0.1% mol of monomers to the solution Catalyst, isolated from air and water, react at room temperature for 8 hours, use a vacuum desolventizer to remove the solvent, and obtain a nitrile rubber reinforcing agent.

[0065] Acrylonitrile, butadiene and the above-mentioned acrylonitrile-butadiene rubber reinforcing agent are dropped into the polymerization kettle according to the ratio of 15 / 70 / 15 according to the mass proportion, and 10 parts of potassium abietate emulsifiers of monomer quality are added, and 200 parts of soft water, 0.01 part of potassium persulfate initiator, control the reaction temperature to 80°C, the reaction pressure to 2.5Mpa, and react for 8 hours. After the reaction, the latex is coagulated, washed and dried to obtain a high-strength nitrile rubber product. After testing,...

Embodiment 3

[0070] Mix acrylonitrile 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 monomers to the solution Catalyst, isolated from air and water, react at room temperature for 0.5h, and use a vacuum desolventizer to remove the toluene solvent to obtain a nitrile rubber reinforcing agent.

[0071] Put acrylonitrile, butadiene and the above-mentioned nitrile rubber reinforcing agent into the polymerization kettle according to the ratio of 5 / 50 / 45 in mass proportion, add 3 parts of monomer mass of potassium abietate emulsifier, 190 parts of soft water, 0.07 part of dicumyl hydroperoxide initiator, control the reaction temperature to 6°C, the reaction pressure to 2.5Mpa, and react for 8 hours. After the reaction, the latex is coagulated, washed and dried to obtain a high-strength nitrile rubber product. After testing, compared with the tensile strength of ordinary nitrile r...

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Abstract

The invention provides a rubber reinforcing agent and a preparation method thereof and provides a preparation method for high-strength nitrile butadiene rubber through ternary polymerization of acrylonitrile, butadiene and the rubber reinforcing agent. In the invention, firstly a nitrile butadiene rubber reinforcing agent having excellent reaction activity with both the acrylonitrile and butadiene is synthesized through the steps of: mixing a nitrile compound containing an alkene unsaturated substituent group and an organic silioxane monomer containing an alkene unsaturated substituent group; with a methylbenzene solvent, adding an olefin metathesis catalyst, insulating air and water, and performing a reaction at normal temperature; and removing the solvent through a vacuum solvent removal device to prepare the nitrile butadiene rubber reinforcing agent. The reinforced nitrile butadiene rubber is prepared by adding the acrylonitrile, the butadiene and the nitrile butadiene rubber reinforcing agent into a polymerization kettle according to ratio, adding an emulsifier, soft water and an initiator, controlling reaction temperature and pressure, and performing a reaction for a certain time, performing condensation, and washing and drying a product to prepare the high-strength nitrile butadiene rubber.

Description

technical field [0001] The invention relates to a rubber reinforcing agent and a preparation method thereof, and provides a preparation method of high-strength nitrile rubber obtained by ternary copolymerization of acrylonitrile, butadiene and nitrile rubber reinforcing agent. Background technique [0002] The strength of emulsion polymerized nitrile rubber raw rubber is low, generally only 5.5±0.5MPa, and its strength is mainly improved by the reinforcing agent in the post-processing process, generally up to 21.5-24.5MPa. Reinforcing agents mainly include inorganic powders such as carbon black, white carbon black, nano-calcium carbonate, and montmorillonite. Physical adsorption or chemical bonds are formed between the agents, and then a network mechanism centered on inorganic powder is formed to reinforce the rubber. The self-agglomeration of inorganic powder is relatively serious, and high energy is required to realize its mixing with rubber, and it generally requires lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18B01J31/22C08F236/12C08F230/08C08F2/26
Inventor 艾纯金张海霞郭珺高阳光付含琦董静张华强崔英燕鹏华王锋康安福郑聚成陈建刚李树毅朱晶
Owner PETROCHINA CO LTD
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