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

Powder coating composition and method for preparing thickness-controllable electrostatic spraying coating by powder coating composition

A technology of powder coating and electrostatic spraying, which is applied in coatings, conductive coatings, polyamide coatings, etc. It can solve problems such as the difficulty of thick coating, the decrease of the surface conductivity of the workpiece, and the inability to re-spray electrostatically, achieving mild conditions , good interaction and broad application prospects

Active Publication Date: 2022-04-08
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for existing powder coating products, after an electrostatic spraying film-forming operation, the electrical conductivity of the workpiece surface decreases, and electrostatic spraying cannot be performed again, so only thinner coatings can be prepared, and the coating thickness is generally 40-80 Micron, it is difficult to achieve thick coating with film thickness exceeding 100 microns

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
  • Powder coating composition and method for preparing thickness-controllable electrostatic spraying coating by powder coating composition
  • Powder coating composition and method for preparing thickness-controllable electrostatic spraying coating by powder coating composition
  • Powder coating composition and method for preparing thickness-controllable electrostatic spraying coating by powder coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Preparation of insulating treated conductive filler:

[0059] The conductive filler for insulation treatment (hereinafter referred to as conductive filler), the specific preparation method is as follows: mix insulating thermoplastic resin and conductive material powder according to a certain mass ratio, and the thermoplastic resin can be polyolefin resin, polyamide resin, One or more mixtures of thermoplastic polyester resin, fluorocarbon resin, etc.; the conductive material powder can be metal (gold, platinum, silver, copper, iron, aluminum, zinc, magnesium and alloy powder, etc.), conductive One or more of conductive powders such as carbon materials (activated carbon, graphite, carbon nanotubes, and graphene, etc.), conductive polymers (polyacetylene, polyaniline, polythiophene, and polypyrrole, etc.) are mixed. Table 1 provides six representative composition formulas, obviously, the described formulas are only a part of the formulas of the present invention, not all ...

Embodiment 2

[0065] Preparation of polymer resins with ionizable groups:

[0066] The described polymer resin with ionizable groups (hereinafter referred to as ionizing resin) has sulfonic acid groups, or sulfonate groups, or carboxylic acid groups, or carboxylate groups, or amino groups, Or the polymer resin of one or more ionizable groups such as ammonium salt groups can be commercially available resin powder or designed and synthesized resin powder. Table 2 below shows four representative ionizing resins. Obviously, the described resin types are only a part of the applicable ionizing resins of the present invention, but not all applicable ionizing resins.

[0067] Table 2 Four representative ionization resins

[0068] sample name Resin type parameter Ionization resin 1# Sulfonated polyphenylene sulfide powder Self-made, sulfonation degree 3.5% Ionization resin 2# Sulfonated polyphenylene sulfide powder sodium salt Self-made, sulfonic acid sodium salt gra...

Embodiment 3

[0072] Preparation of base powder material:

[0073]The base layer powder material includes thermosetting resin, thermoplastic resin, insulating treated conductive filler, polymer resin with ionizable groups, thermosetting powder coating curing agent and additives. Table 3 provides four representative base powder composition formulas, obviously, the described formulas are only a part of the formulas applicable to the present invention, rather than all formulas.

[0074] Table 3 Composition formula of four representative base powder materials

[0075]

[0076] The PPS mentioned in the above table is the abbreviation of polyphenylene sulfide, PTFE is the abbreviation of polytetrafluoroethylene, and HDPE is the abbreviation of high-density polyethylene.

[0077] The components mentioned in the above table are all powders with a particle size of no more than 100 mesh, which are added to the powder mixer in proportion, mixed thoroughly, passed through a 100 mesh sieve, and clas...

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
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a powder coating composition and a method for preparing a thickness-controllable electrostatic spraying coating by using the powder coating composition. The powder coating composition is composed of a base layer powder material and a surface layer powder material, the base layer powder material is composed of thermosetting resin, thermoplastic resin, conductive filler subjected to insulation treatment, polymer resin with ionizable groups, a thermosetting powder coating curing agent and an additive; and the surface layer powder material consists of thermosetting resin, thermoplastic resin, a thermosetting powder coating curing agent, pigment and an additive. Compared with the prior art, the powder coating composition provided by the invention adopts the components with specific contents, better interaction is realized, and by utilizing the powder coating composition, on one hand, multi-layer electrostatic spraying and thick spraying with adjustable coating thickness can be realized, and on the other hand, damage repair, renovation and color change operation of the coating can be conveniently realized.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a powder coating composition and a method for preparing a thickness-controllable electrostatic spray coating. Background technique [0002] Powder coating, as a new type of coating, does not contain solvents and is environmentally friendly. According to the properties of the main film-forming substances, powder coatings are divided into two categories: thermoplastic powder coatings and thermosetting powder coatings; according to the coating method and existing state, they can be divided into electrostatic spraying powder coatings, fluidized bed dipping powder coatings, and electrophoretic powder coatings. , UV-curable powder coatings and water-dispersed powder coatings, etc. Among them, electrostatic powder spraying charges the coating powder through friction or corona discharge, and then adsorbs on the surface of the workpiece, and then heats the workpiece with the adso...

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): C09D163/00C09D181/02C09D127/18C09D177/06C09D133/00C09D123/06C09D161/06C09D175/04C09D5/24C09D7/61B05D1/06B05D3/02B05D7/24
Inventor 孙志强庞烜林里张涵李帅陈学思
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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