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

A kind of surface modification method of conductive material and its application in polyacrylate coating

A polyacrylate emulsion, conductive material technology, applied in conductive coatings, coatings, fibrous fillers, etc., can solve the problems of delamination, poor conductive and mechanical properties of coatings, short storage period of conductive coatings, etc. Effects of dispersion stability, improvement of interfacial bonding properties, and reduction of the number of hydrophilic groups

Active Publication Date: 2021-03-02
CHANGZHOU UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previous research work, we added inorganic conductive materials (Chinese invention patent, the preparation method is the same as CN201710578196.6, CN201710578228.2 or CN201710594663.4) to water-based polyacrylate emulsion (Chinese invention patent, application number: 201810875363.8 and application No.: 201910336421.4), the prepared conductive coating has problems such as short storage period, delamination, etc., and poor conductivity and mechanical properties of the coating after curing

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
  • A kind of surface modification method of conductive material and its application in polyacrylate coating
  • A kind of surface modification method of conductive material and its application in polyacrylate coating
  • A kind of surface modification method of conductive material and its application in polyacrylate coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. At room temperature, while stirring, spray 0.3 kg of methyltrichlorosilane into 10.0 kg of attapulgite / polyaniline composite conductive powder (the preparation method is Chinese invention patent CN201710578196.6 Example 4); after spraying , quickly and continuously feed ammonia gas into the silane-modified conductive powder for 20 minutes of adsorption reaction, wherein the flow rate of ammonia gas is controlled to be 0.03 cubic meters per second, and the amino-functionalized modified conductive powder is obtained;

[0019] 2. Take 10 kg of amino-functionalized modified conductive powder and disperse it in 200 kg of deionized water. While stirring, add 0.2 kg of aminotrimethylene phosphonic acid to the system, continue to stir and react for 30 minutes, then filter and wash. Dry and pulverize at 60°C to obtain organic acid-modified conductive powder;

[0020] 3. Take 30 parts of polyacrylate emulsion (the preparation method is Chinese patent CN201810875363.8 Example 1...

Embodiment 2

[0022] 1. At room temperature, while stirring, spray 1.0 kg of 3-chloropropyl trichloride into 10.0 kg of three-dimensional attapulgite-mica-based conductive composite material conductive powder (the preparation method is Chinese invention patent CN201710594663.4 Example 1) Silane: After spraying, quickly and continuously feed ammonia gas into the silane-modified conductive powder for 35 minutes of adsorption reaction, wherein the flow rate of ammonia gas is controlled to be 0.065 cubic meters per second, and the amino functionalized modified conductive powder is obtained ;

[0023] 2. Take 10 kg of amino-functionalized modified conductive powder and disperse it in 50 kg of deionized water. While stirring, add 1.0 kg of aminotrimethylene phosphonic acid to the system, continue to stir and react for 60 minutes, then filter and wash. Dry and pulverize at 80°C to obtain organic acid-modified conductive powder;

[0024] 3. Take 50 parts of polyacrylate emulsion (preparation metho...

Embodiment 3

[0026] 1. At room temperature, while stirring, spray 0.65 kg of methyltrichlorosilane into 10.0 kg of attapulgite-mica / polyaniline conductive composite conductive powder (the preparation method is Chinese invention patent CN201710578228.2 Example 1); After spraying, rapidly and continuously feed ammonia gas into the silane-modified conductive powder for 30 minutes of adsorption reaction, wherein the flow rate of ammonia gas is controlled to be 0.1 cubic meters per second, and the amino-functionalized modified conductive powder is obtained;

[0027] 2. Take 10 kg of amino-functionalized modified conductive powder and disperse it in 100 kg of deionized water. While stirring, add 0.6 kg of aminotrimethylene phosphonic acid to the system, continue to stir and react for 45 minutes, then filter and wash. Dry and pulverize at 70°C to obtain organic acid-modified conductive powder;

[0028] 3. Take 40 parts of polyacrylate emulsion (preparation method is Chinese invention patent appli...

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 present invention relates to a kind of organic surface modification method of inorganic composite powder, especially a kind of surface modification method of conductive material and its application in polyacrylate paint, the present invention first uses chlorosilane to modify inorganic conductive powder body, and then modified by the gas phase method, that is, ammonia gas is introduced to aminate the inorganic conductive powder, and then the organic acid-amino trimethylene phosphonic acid is used to further modify the aminated inorganic conductive powder. The amino trimethylene phosphonic acid can React with the amino group on the surface of the inorganic conductive powder to prepare an organic phosphonic acid modified inorganic conductive powder material. The modified inorganic conductive material is added to the polyacrylate coating, and the acidic groups on the surface of the modified conductive powder can be chemically bonded with the polyacrylate film-forming resin molecular chain to increase the crosslinking degree between the polyacrylate molecular chains , improving the dispersion stability of the coating and the electrical conductivity and mechanical properties of the coating as a whole.

Description

technical field [0001] The invention relates to a novel organic surface modification method of an inorganic composite powder, in particular to an organic surface modification method of an inorganic conductive powder and a preparation method thereof. Background technique [0002] Conductive coatings can be used for surface coating of products such as plastics, rubber, synthetic fibers and glass, and are widely used in industries such as automobiles, home appliances, electronic instruments, packaging and building materials. The currently used conductive coatings usually add inorganic conductive materials to insulating polymers (film-forming resins), so that the coating after curing to form a film has conductive properties. The key technical problem is that the interfacial bonding ability between the inorganic conductive material and the film-forming resin greatly affects the stability, dispersion, electrical conductivity and mechanical properties of the coating (layer). At pr...

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): C09C1/28C09C3/08C09D5/24C09D155/00C09D187/00
CPCC08K2201/001C09C1/28C09C3/08C09D5/24C09D155/00C09D187/00C08L79/02C08K9/06C08K9/04C08K9/02C08K3/346C08K3/34
Inventor 左士祥姚超陈群刘文杰汪信李霞章周铭卓仲标郭小平岳晓峰徐勤力
Owner CHANGZHOU 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