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Nitrile butadiene rubber reinforcement type plasticizer preparation method

A technology of rubber reinforcing agent and nitrile rubber, applied in chemical instruments and methods, compounds of group 4/14 elements of the periodic table, organic chemistry, etc., can solve problems such as easy precipitation and no reinforcing effect

Active Publication Date: 2018-03-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the plasticizers reported in the patent are ester plasticizers. This type of plasticizer has good compatibility with nitrile rubber and has a good plasticizing effect, but has no reinforcing effect, and is used in products. prone to precipitation during the process

Method used

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  • Nitrile butadiene rubber reinforcement type plasticizer preparation method
  • Nitrile butadiene rubber reinforcement type plasticizer preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mix anti-scorch agent 2-vinyl benzoic acid and reinforcing agent nitrile vinyl triethoxysilane at a molar ratio of 1.0:5.0, prepare a solution with a mass concentration of 30% with hexane solvent, and add anti-scorch to the solution Olefin metathesis catalysts at 0.1% of the total amount of coking agent and reinforcing agent Air and water were isolated, and after reacting at room temperature for 8 hours, the solvent was removed by a vacuum desolventizer to obtain anti-scorch rubber reinforcing agent 1-1.

[0038] Dissolve nitrile rubber NBR3305 in chloroform solvent to prepare a 0.11% concentration solution, add 0.51 parts of olefin metathesis catalyst and 11 parts of anti-scorch rubber reinforcing agent 1-1, and reacted for 0.5 hours at 15°C without air and water. After the reaction, the glue solution was removed by solvent to obtain a reinforced plasticizer product with an Mn of 7800.

[0039] Add 10 parts of this reinforcing plasticizer to nitrile rubber NBR3305 o...

Embodiment 2

[0044] Mix anti-scorch agent 3-vinylphthalic acid and reinforcing agent vinyldiethoxymethylsilane at a molar ratio of 1.0:0.1, prepare a solution with 1% mass concentration with hexane solvent, add to the solution Olefin metathesis catalysts accounting for 0.01% of the total amount of anti-scorch agents and reinforcing agents After isolating air and water and reacting at room temperature for 0.5 h, the solvent was removed by a vacuum desolventizer to obtain anti-scorch rubber reinforcing agent 2-1.

[0045] Dissolve nitrile rubber NBR3305 in acetone solvent to prepare a 10% concentration solution, add 1 part of olefin metathesis catalyst and 50 parts of anti-scorch rubber reinforcing agent 2-1, and react for 5 hours at 50°C in isolation from air and water. The reacted glue solution is detached by solvent to obtain a reinforced plasticizer product with Mn of 3000.

[0046] Add 10 parts of the plasticizer to the nitrile rubber NBR3305 on the mill. After testing, the Mooney vi...

Embodiment 3

[0052] Mix anti-scorch agent 3-vinyl phthalic anhydride and reinforcing agent vinyl trimethoxysilane at a molar ratio of 1.0:4.0, prepare a solution with 10% mass concentration with hexane solvent, add Zhan Fang to the solution Olefin Metathesis Catalysts 0.09% of the Total Substance Amount of Coke and Reinforcing Agents Isolate air and water, react at room temperature for 4.5 hours, and use a vacuum desolventizer to remove the solvent to obtain anti-scorch rubber reinforcing agent 3-1.

[0053] The nitrile rubber NBR2907 base rubber is dissolved in chlorobenzene solvent to prepare a 19% concentration solution, and 1.4 parts of olefin metathesis catalyst are added and 25 parts of anti-scorch rubber reinforcing agent 3-1, and react for 2.5 hours at 25°C without air and water.

[0054] Add 30 parts of the plasticizer to the nitrile rubber NBR2907 on the mill. After testing, the Mooney viscosity decreased from 75 to 40, the tensile strength increased from 24.3MPa to 27.5MPa, a...

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Abstract

The invention provides a nitrile butadiene rubber reinforcement type plasticizer preparation method, which comprises: dissolving a nitrile butadiene rubber in a solvent to prepare a solution, adding an olefin double-decomposition catalyst and a coke-proof rubber reinforcing agent, and carrying out solvent removing on the rubber solution after the reaction so as to obtain the reinforcement type plasticizer product. According to the present invention, with the reinforcement type plasticizer, after the nitrile butadiene rubber is added to the open mill, the Mooney viscosity of the base rubber canbe reduced by 0.5 unit / part, the strength can be increased by more than 0.05 MPa / part, and the scorch time can be delayed by 1-15 s / part.

Description

technical field [0001] The invention relates to a preparation method of a nitrile rubber plasticizer, in particular to a low molecular weight nitrile rubber plasticizer with a reinforcing function. Background technique [0002] Emulsion polymerized nitrile rubber raw rubber Mooney viscosity is generally 40-100ML 1+4 100℃ , the mixed rubber Mooney generally requires less than 90ML 1+4 100℃ ; The strength of raw rubber is low, generally only 6.5±0.5MPa, and its strength is mainly improved by the reinforcing agent in the post-processing process, generally up to 20.5-26.5MPa. Reinforcing agents mainly include inorganic powders such as carbon black, white carbon black, nano-calcium carbonate, and montmorillonite. The self-agglomeration of inorganic powders is relatively serious, and high energy is required to realize the mixing with rubber. Repeated kneading and mixing for a long time on a machine or internal mixer. In the refining or banburying process, it is generally nece...

Claims

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Application Information

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IPC IPC(8): C08C19/25C08L9/02C08L15/00C07F7/18
CPCC07F7/1804C07F7/1892C08C19/25C08L9/02C08L15/00
Inventor 艾纯金王卫东邵卫李猛付含琦朱晶吴宇龚光碧赵旭涛梁滔李树毅陈建刚李晶郑聚成朱玲刘鹏
Owner PETROCHINA CO LTD
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