Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing chemical carbon powder by coagulation on basis of modified latex particles and modified pigment emulsion

A technology of latex particles and chemical carbon, applied in optics, electrical recording, instruments, etc., can solve problems such as poor dispersion and difficulty in washing and removing emulsifiers, achieve narrow particle size distribution, avoid resin redispersion process, simplify The effect of the production process

Inactive Publication Date: 2012-12-05
NORTHWESTERN POLYTECHNICAL UNIV
View PDF11 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a method for preparing chemical carbon powder based on the emulsion coagulation of modified latex particles and modified pigments to solve the problem of pigment existing in the production process of chemical carbon powder prepared by the existing emulsion coagulation technology , wax and charge regulator particles are not well dispersed in the toner particles, and it is difficult to remove the emulsifier in the later stage.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing chemical carbon powder by coagulation on basis of modified latex particles and modified pigment emulsion
  • Method for preparing chemical carbon powder by coagulation on basis of modified latex particles and modified pigment emulsion
  • Method for preparing chemical carbon powder by coagulation on basis of modified latex particles and modified pigment emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 0.1 g of sodium dodecylbenzenesulfonate, 0.6 g of carnauba wax, and 20 g of deionized water into a beaker, and disperse the wax into an emulsion by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add 0.1 g of sodium dodecylbenzenesulfonate, 0.2 g of P-15 type charge regulator produced by Hubei Dinglong, and 20 g of deionized water into a beaker, and disperse by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add the above dispersion into a container equipped with an electric stirrer, condensed water, and a thermometer, then add 34g of surface sulfonated latex particle dispersion (resin glass transition temperature is 54°C, surface solid content 20%) and surface polymerization 1.2g of pigment particles coated with modified substances, 0.3g of polyvinyl alcohol, and 10g of water were mixed uniformly and the pH of the system was adjusted to about 2. The temperature of the reaction system is adjusted to 30°C, the stirring speed is...

Embodiment 2

[0037] Add 0.1 g of sodium dodecyl sulfonate, 0.6 g of carnauba wax, and 20 g of deionized water into a beaker, and disperse the wax into an emulsion by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add 0.1 g of sodium dodecylbenzenesulfonate, 0.2 g of N-33 type charge regulator produced by Hubei Dinglong, and 20 g of deionized water into a beaker, and disperse by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add the above dispersion into a container equipped with an electric stirrer, condensed water, and a thermometer, then add 34g of surface sulfonated latex particle dispersion (resin glass transition temperature is 60°C, surface solid content 20%) and surface polymerization Add 1.2g of modified pigment particles, 0.5g of Span-80, and 10g of water. After mixing evenly, adjust the pH of the system to about 2. The temperature of the reaction system was adjusted to 30°C, the stirring speed was adjusted to 400r / min, and 10g of coagulan...

Embodiment 3

[0039] Add 0.2 g of sodium lauryl sulfate, 0.6 g of carnauba wax, and 20 g of deionized water into a beaker, and disperse the wax into an emulsion by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add 0.1 g of sodium dodecylbenzenesulfonate, 0.2 g of P-15 type charge regulator produced by Hubei Dinglong, and 20 g of deionized water into a beaker, and disperse by ultrasonication for 10 minutes using an ultrasonic cell pulverizer. Add the above dispersion into a container equipped with an electric stirrer, condensed water, and a thermometer, then add 34g of surface sulfonated latex particle dispersion (resin glass transition temperature is 40°C, surface solid content 20%) and surface polymerization Add 1.4g of modified pigment particles, 0.5g of Tween-85, and 10g of water, and adjust the pH of the system to about 2 after mixing evenly. The temperature of the reaction system is adjusted to 30°C, the stirring speed is adjusted to 300r / min, and 10g of coagulant...

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
Particle sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing chemical carbon powder by coagulation on the basis of modified latex particles and modified pigment emulsion. The method includes uniformly dispersing the modified latex particles with sulfonic groups fixed on surfaces, modified pigment particles coated with high polymers, wax dispersion liquid, anionic surfactants and nonionic surfactants in a disperse system at first; then adding flocculating agents into the system to remove stabilization so that the latex particles are coagulated to form micelle, and enabling the pigment particles and wax dispersion particles to coat inside the micelle when the latex particles are coagulated to form the micelle; and finally, performing thermal treatment to obtain chemical carbon powder particles with controllable sizes, approximately spherical shapes and uniform particle diameters.

Description

technical field [0001] The invention relates to a method for preparing chemical carbon powder based on the coagulation of modified latex particles and modified pigment emulsions. The prepared chemical carbon powder has the characteristics of controllable particle size, narrow particle size distribution, regular shape and the like. The prepared chemical toner particles can be used as toner for laser printers and copiers. Background technique [0002] Toner for laser printing and copiers is the main consumable in the printing and copying office market, and the market demand is very strong. Laser printing and copiers are mainly based on the principle of magnetoelectricity. The toners used are mainly divided into one-component magnetic toner and two-component non-magnetic toner. The toner for the fixing function is separated, the magnetic carrier medium can be recycled, and it is convenient for the production of toner to color, so it has become the mainstream product in the app...

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
IPC IPC(8): G03G9/08
Inventor 张秋禹周艳阳张和鹏尹德忠周轮伟王雯雯
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com