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

Method for preparing anisotropic composite particles

A composite particle and anisotropic technology, which is applied in the field of synthesis of anisotropic asymmetric composite particles, can solve problems such as poor fluidity

Inactive Publication Date: 2013-12-11
TIANJIN QUANDA TECH
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of poor fluidity in the processing process caused by the complex synthesis process and high cross-linking of the current preparation of anisotropic composite particles, and provides a simple, environmentally friendly and easy-to-process preparation method

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 anisotropic composite particles
  • Method for preparing anisotropic composite particles
  • Method for preparing anisotropic composite particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] (a), Preparation of seed emulsion:

[0027]

[0028] Add 10.0g of seed monomer and 90.0g of deionized water into the reactor, start stirring, pass nitrogen gas into the whole process, reflux and condense, add 0.1g of initiator after the system reaches 75°C, polymerize for 5 hours, and preliminarily prepare the seeds Lotion;

[0029]

[0030] Take 52.5g of the prepared primary seed emulsion (containing about 5g of seeds), add 0.5g of hydrophilic monomer acrylamide and 90.0g of deionized water, add an initiator after the system reaches 80°C, and polymerize for 10 hours to obtain the seed emulsion .

[0031] (b), Preparation of anisotropic particles:

[0032]

[0033] Add 80.0g of deionized water to the seed emulsion (27.0g) obtained in step (a), after ultrasonic dispersion, start stirring, pass nitrogen gas through the whole process, and perform reflux condensation, add 3.0g of the second monomer and 0.018g of initiator Potassium persulfate is used as an agent...

Embodiment example 2-5

[0035] In the implementation cases 2-5, the amount of the hydrophilic monomer was changed to 1.0 g, 2.0 g, and 3.0 g respectively, and the rest of the steps were the same as in the implementation case 1.

Embodiment example 6-7

[0037] In the implementation cases 6-7, the hydrophilic monomers were changed to acrylic acid and vinyl acetate respectively, and the amount of the hydrophilic monomers was 1.0 g, and the rest of the steps were the same as in the implementation case 1.

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

No PUM Login to View More

Abstract

The invention relates to a method for preparing anisotropic composite particles. According to the method, firstly, a primary seed emulsion is prepared, then, primary seed particles are coated by hydrophilic monomers so as to form hydrophilic layers, a series of polymer seeds with the hydrophilic layers of different thickness can be synthesized through adjusting the amount of the hydrophilic monomers, then, the polymer seeds are swelled by monomers incompatible with the polymer seeds, and the occurrence of phase separation is facilitated due to the introduction of the hydrophilic layers, so that a series of anisotropic composite particles with different microcosmic morphologies can be prepared. According to the method, soap-free seed emulsion polymerization is adopted, and different from the traditional methods that highly-crosslinked seeds and various organic solvents are adopted as dispersion phases, water is adopted as a dispersion phase, so that non-crosslinked composite particles can be prepared, the separation and further processing of the composite particles are facilitated, the separation treatment is facilitated, and the method is clean and environment-friendly and is beneficial to further large-scale production.

Description

technical field [0001] The invention belongs to the synthesis of anisotropic asymmetric composite particles, in particular to a preparation method of anisotropic composite particles. technical background [0002] Anisotropic composite particles generally refer to particles with asymmetric shape, chemical composition and / or properties, and non-uniform distribution. This particle can be composed of inorganic-inorganic, inorganic-organic, organic-organic components. Due to its unique properties, this particle is widely used in optical biosensors, electronic displays, functional probes, self-assembly, surfactants And other aspects have shown attractive application prospects, so more and more people's attention. Its preparation methods are also various, and the main preparation methods of anisotropic composite particles commonly reported in the literature include: microfluidic method, template self-assembly method, dispersion polymerization method, emulsion polymerization method...

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 Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F212/12C08F220/14C08F220/44C08F220/06C08F220/56C08F218/08C08F2/22
Inventor 赫川牛群李玉丹
Owner TIANJIN QUANDA TECH
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