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A method for in-situ reinforced emulsion polystyrene butadiene rubber with modified carbon nanotubes

A technology of emulsion polystyrene-butadiene rubber and carbon nanotubes, applied in the production of bulk chemicals, etc., can solve the problems of easy deformation of gel, solvent pollution, etc., and achieve simple modification method, easy operation, wear resistance and anti-aging. Excellent performance

Active Publication Date: 2022-06-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims to solve the technical problem that the composite gel obtained by the existing method is polluted by the solvent, and the gel is easily deformed during the solvent exchange process.

Method used

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  • A method for in-situ reinforced emulsion polystyrene butadiene rubber with modified carbon nanotubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of ionic liquid-modified carbon nanotube viscoelastic fluid: add 12,000 parts of 1-butyl-3-methylimidazolium hexafluorophosphate to a mortar, add 100 parts of carbon nanotubes, and stir at room temperature for 1.5 h , 1-butyl-3-methylimidazolium hexafluorophosphate modified carbon nanotube viscoelastic fluid was obtained.

[0041] (2) In-situ polymerization: 100 parts of water, 30 parts of styrene, 5 parts of disproportionated potassium rosinate soap, 0.6 parts of tert-dodecane mercaptan were added successively in the polymerization kettle, and 70 parts of butadiene were added after replacing with nitrogen. , 10 parts of viscoelastic fluid (obtained in step (1)), stirred and heated, when the temperature of the polymerization kettle reached 40 ° C, 0.4 parts of sodium azo amino acid were added, stirred for 0.8 h, and then reacted at a polymerization temperature of 40 ° C for 5 hours, 0.2 part of sodium dimethyl dithiocarbamate was added to prepare enhance...

Embodiment 2

[0048] (1) Preparation of ionic liquid-modified carbon nanotube viscoelastic fluid: add 15,000 parts of 1-octyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide salt) into a mortar, add 100 parts of carbon The nanotubes were stirred at room temperature for 1.5 h to obtain 1-octyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt) modified carbon nanotube viscoelastic fluid.

[0049] (2) In-situ polymerization: 100 parts of water, 50 parts of styrene, 10 parts of disproportionated potassium rosinate soap, 0.5 part of tert-decyl mercaptan were added successively in the polymerization kettle, and after replacing with nitrogen, 50 parts of butadiene, 5 parts of viscoelastic fluid (obtained in step (1)), stirred and heated, when the temperature of the polymerization kettle reached 30°C, 0.2 part of sodium azoamino acid was added, stirred for 1 hour, and then reacted at a polymerization temperature of 60°C for 5 hours, and added 0.3 Parts of hydroquinone were obtained ...

Embodiment 3

[0055] (1) Preparation of ionic liquid-modified carbon nanotube viscoelastic fluid: add 13,000 parts of 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide salt in a mortar, add 100 parts of carbon nanotubes , and stirred at room temperature for 1.0 h to obtain 1-hexyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt-modified carbon nanotube viscoelastic fluid.

[0056] (2) In-situ polymerization: 100 parts of water, 40 parts of styrene, 8 parts of disproportionated potassium rosinate soap, 0.8 parts of tertiary tetradecane mercaptan were added successively in the polymerization kettle, and 60 parts of butadiene were added after replacing with nitrogen. , 15 parts of viscoelastic fluid (obtained in step (1)), stirred and heated, when the temperature of the polymerization kettle reached 40 °C, 0.3 parts of sodium azo amino acid was added, stirred for 1 h, and then reacted at a polymerization temperature of 50 °C for 6 hours, added 0.5 part of sodium dimethyl...

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Abstract

The present invention provides a method for in-situ reinforced emulsion polystyrene butadiene rubber modified by ionic liquid carbon nanotubes, comprising: (1) preparation of ionic liquid modified carbon nanotube viscoelastic fluid: adding ionic liquid, carbon and stirring the nanotubes at room temperature to obtain the viscoelastic fluid of the ionic liquid modified carbon nanotubes. (2) In-situ polymerization: Add water, styrene, emulsifier, and molecular weight regulator in sequence in the polymerization kettle. After nitrogen replacement, add butadiene and viscoelastic fluid (1), stir and heat until the temperature of the polymerization kettle reaches Add an initiator at 30-60°C, stir for 0.8-1h, then react at a polymerization temperature of 30-60°C for 5-8 hours, and add a terminator to prepare reinforced styrene-butadiene latex. (3) Latex coagulation: Add soft water and styrene-butadiene latex (2) into the coagulation kettle, stir and mix, add anti-aging agent and demulsifier, add coagulant to coagulate after stirring and mixing, then wash, dehydrate and dry to obtain polymer.

Description

technical field [0001] The invention relates to a method for in-situ reinforcement of emulsion polystyrene-butadiene rubber by modified carbon nanotubes, in particular to a method for in-situ reinforcement of emulsion polystyrene-butadiene rubber with ionic liquid modified carbon nanotubes, and in particular to a method using an emulsion method Method for preparing in-situ reinforced emulsion polystyrene-butadiene rubber. Background technique [0002] Carbon black is widely used in the rubber industry as a reinforcing filler. Carbon black is neither a typical crystal nor a typical amorphous, and its microstructure is between the stone crystal structure and the amorphous structure. At present, the modification of carbon black is almost all carried out around a small amount of functional groups on the surface of carbon black. The most widely studied of these modification methods is based on surface grafting reactions of various groups, including various reactions such as fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/10C08F212/08C08K9/04C08K3/04C08J5/00
CPCC08F236/10C08K9/04C08K3/041C08J5/005C08K2201/011C08J2309/06C08F212/08Y02P20/54
Inventor 魏绪玲张华强杨芳李晶赵玉中艾纯金马朋高龚光碧
Owner PETROCHINA CO LTD