Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of method for preparing emulsion polystyrene butadiene rubber by ionic liquid and chitosan modified carbon black

A technology of chitosan modification and ionic liquid is applied in the field of preparing ionic liquid-modified carbon black modified emulsion polystyrene-butadiene rubber by emulsion method, which can solve the problem that the dispersion of white carbon black is not obviously improved.

Active Publication Date: 2021-11-30
PETROCHINA CO LTD
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that there are hydrogen bonds between BMimMS cations and silicon-oxygen bonds and anions and silanols; with the increase of BMimMS dosage, the crosslinking density of silica / SBR composites increases, but the silica Dispersion did not significantly improve the BMimMS can effectively enhance the interaction between silica and SBR, improve the physical properties of silica / SBR composites and the loss factor in the low temperature region (-20 ~ 0 ℃), and make the moisture resistance of the composites Improved slip performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Ionic liquid modified carbon black: add 600 parts of ethanol to the beaker, add 100 parts of carbon black, 5 parts of chitosan, ultrasonically for 2 hours at room temperature to fully disperse the carbon black, add dropwise to the carbon black dispersion 10 parts of 1-ethyl-3-methylimidazolium tetrafluoroborate were stirred at room temperature for 5 hours to obtain a 1-ethyl-3-methylimidazolium tetrafluoroborate-modified carbon black mixed solution. (2) Latex coagulation: 100 parts of styrene-butadiene latex are added to the coagulation kettle, 5 parts of 1-ethyl-3-methylimidazolium tetrafluoroborate modified carbon black mixed solution (1) is added, stirred and mixed for 30min, and At the coagulation temperature of 30°C, add 5 parts of soft water while adding 5 parts of saturated NaCl aqueous solution, add 5 parts of sulfuric acid for coagulation, stir at 80°C for 3 hours for aging, then wash, dehydrate and dry to obtain the polymer. Measured according to the testi...

Embodiment 2

[0033] (1) Ionic liquid modified carbon black: add 1000 parts of ethanol to the beaker, add 100 parts of carbon black and 10 parts of chitosan, and ultrasonicate for 3 hours at room temperature to fully disperse the carbon black, and dropwise add 20 parts of 1-octyl-3-methylimidazolium tetrafluoroborate were stirred at room temperature for 3 hours to obtain a 1-octyl-3-methylimidazolium tetrafluoroborate modified carbon black mixture. (2) Latex coagulation: 100 parts of styrene-butadiene latex are added to the coagulation kettle, 10 parts of 1-octyl-3-methylimidazolium tetrafluoroborate modified carbon black mixed solution (1) is added, stirred and mixed for 30min, and At the coagulation temperature of 40°C, add 5 parts of soft water while adding 5 parts of saturated NaCl aqueous solution, add 15 parts of sulfuric acid for coagulation, stir at 100°C for 3 hours for aging, then wash, dehydrate and dry to obtain the polymer. Measured according to the testing standard: Mooney vis...

Embodiment 3

[0037](1) Ionic liquid modified carbon black: Add 700 parts of ethanol to the beaker, add 100 parts of carbon black and 8 parts of chitosan, and ultrasonicate for 2 hours at room temperature to fully disperse the carbon black, and dropwise add 15 parts of 1-propylsulfonic acid-3-methylimidazolium tetrafluoroborate was stirred at room temperature for 4 hours to obtain a mixed solution of 1-propylsulfonic acid-3-methylimidazolium tetrafluoroborate modified carbon black. (2) Latex coagulation: Add 100 parts of styrene-butadiene latex into the coagulation kettle, add 10 parts of 1-propylsulfonic acid-3-methylimidazolium tetrafluoroborate modified carbon black mixture (1), and stir and mix for 30 minutes , at a coagulation temperature of 40°C, add 6 parts of saturated NaCl aqueous solution while adding 60 parts of soft water, add 8 parts of sulfuric acid for coagulation, stir at 90°C for 3 hours for aging, then wash, dehydrate, and dry to obtain a polymer. Measure according to dete...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing emulsion polystyrene butadiene rubber with ionic liquid and chitosan modified carbon black, comprising: (1) ionic liquid modified carbon black: adding ethanol, carbon black, chitosan to a beaker, and Ultrasound for 1 to 3 hours to fully disperse the carbon black, add an ionic liquid dropwise to the carbon black dispersion, and stir at room temperature for 3 to 5 hours to obtain a mixed solution of ionic liquid modified carbon black. (2) Latex coagulation: Add styrene-butadiene latex to the coagulation kettle, add the ionic liquid modified carbon black mixture (1), stir and mix for 30 minutes, at the coagulation temperature of 30-50°C, add demulsifier while adding soft water, add coagulation Coagulate the agent, stir at 80-100°C for 2-5 hours for aging, then wash, dehydrate and dry to obtain the polymer. The obtained polymer properties: Mooney viscosity ML (1+4) 100℃ 50-70, 300% modulus stress 18.5-27MPa, tensile strength ≥ 28.0MPa, elongation at break ≥ 570%, wear coefficient ≤ 0.09.

Description

technical field [0001] The invention relates to a method for preparing polystyrene butadiene rubber with ionic liquid and chitosan modified carbon black, in particular to a method for preparing polystyrene butadiene rubber modified with ionic liquid modified carbon black by an emulsion method. 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 body, and its microstructure is between the stone crystal structure and the amorphous body structure. At present, the modification of carbon black is almost 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 the surface grafting reactions of various groups, including free radicals, anions, and cations. Ionic liquid refers to a salt composed of organic cations and organic or inorganic anions with a melting point low...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/08C08L5/08C08K9/12C08K3/04
CPCC08L9/08C08L5/08C08K9/12C08K3/04
Inventor 魏绪玲龚光碧张华强赵洪国郭珺孟令坤丛日新梁滔李晶
Owner PETROCHINA CO LTD