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

Electrostatic plastic spraying powder coating and preparation method and application thereof

A technology of powder coating and electrostatic plastic spraying, which is applied in the direction of anti-corrosion coatings, fire-proof coatings, polyurea/polyurethane coatings, etc. It can solve the problems of damage to the covering power of coatings and the fluidity and smoothness of raw material costs, so as to achieve no pollution to equipment costs, Effect of low equipment cost and good chemical corrosion resistance

Inactive Publication Date: 2020-04-10
长沙金久锌钢型材有限公司
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, conventional powder coatings are usually formulated to contain less than about 40% by weight of pigment, thereby compromising the hiding power and raw material cost of the coating to provide good flow and leveling

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
  • Electrostatic plastic spraying powder coating and preparation method and application thereof
  • Electrostatic plastic spraying powder coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Raw material composition:

[0032] 22 wt% of the bifunctional polyester resin; the bifunctional polyester resin contains both carboxyl and terminal hydroxyl groups, the acid value of the carboxyl functional polyester resin is 50, and the Tg is 65°C.

[0033] Blocked isocyanate 2wt%;

[0034] Triglycidyl isocyanurate curing agent 12wt%;

[0035] Leveling agent DH-4033 2wt%;

[0036] White carbon black 1wt%;

[0037] Iron oxide red 60wt%;

[0038] Acrylate 1wt%.

[0039] The preparation method includes the following steps: weighing each component according to the formula in proportion, adding it to a mixer, and performing batching, premixing, melt extrusion, cooling and pressing, crushing, crushing and sieving to obtain an electrostatic spray powder powder coating with a particle size of Between 100-200 mesh.

[0040] Electrostatic spray method:

[0041] l) Cleaning and drying: After cleaning twice with aviation washing gasoline, blow dry with compressed air;

[0...

Embodiment 2

[0048] Raw material composition:

[0049] 2 wt% of the bifunctional polyester resin; the bifunctional polyester resin contains both carboxyl and terminal hydroxyl groups, the acid value of the carboxyl functional polyester resin is 55, and the Tg is 75°C.

[0050] Blocked isocyanate 5wt%;

[0051] Triglycidyl isocyanurate curing agent 14wt%;

[0052] Leveling agent BYK-306 4wt%;

[0053] Matting agent RB3329 3wt%;

[0054] Iron oxide yellow 70wt%;

[0055] Urethane 2wt%.

[0056] The preparation method includes the following steps: weighing each component according to the formula in proportion, adding it to a mixer, and performing batching, premixing, melt extrusion, cooling and pressing, crushing, crushing and sieving to obtain an electrostatic spray powder powder coating with a particle size of Between 100-200 mesh.

[0057] Electrostatic spray method:

[0058] l) Cleaning and drying: After cleaning twice with aviation washing gasoline, blow dry with compressed air; ...

Embodiment 3

[0065] Raw material composition:

[0066] 12 wt% of the bifunctional polyester resin; the bifunctional polyester resin contains both carboxyl and terminal hydroxyl groups, the acid value of the carboxyl functional polyester resin is 52, and the Tg is 70°C.

[0067] Blocked isocyanate 3wt%;

[0068] Triglycidyl isocyanurate curing agent 13wt%;

[0069] Leveling agent BYK-306 3wt%;

[0070] Matting agent RB608 2wt%;

[0071] Iron oxide yellow 65wt%;

[0072] Polyester 2wt%.

[0073] The preparation method includes the following steps: weighing each component according to the formula in proportion, adding it to a mixer, and performing batching, premixing, melt extrusion, cooling and pressing, crushing, crushing and sieving to obtain an electrostatic spray powder powder coating with a particle size of Between 100-200 mesh.

[0074] Electrostatic spray method:

[0075] l) Cleaning and drying: After cleaning twice with aviation washing gasoline, blow dry with compressed air; ...

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
Tgaaaaaaaaaa
Tgaaaaaaaaaa
Tgaaaaaaaaaa
Login to View More

Abstract

The invention provides an electrostatic plastic spraying powder coating comprising 2-22 wt% of bifunctional polyester resin, 2-5 wt% of blocked isocyanate, 12-14 wt% of a curing agent, 2-4 wt% of a leveling agent, 1-3 wt% of a matting agent, 60 wt%-70 wt% of one or more pigments, and optionally, 1-2 wt% of a pigment dispersant. The preparation method of polyester for the electrostatic plastic spraying powder coating is simple, easy to operate, low in equipment cost and free of pollution; the electrostatic plastic spraying powder coating can generate huge social benefits and economic benefits,is suitable for general popularization and application, is suitable for electrostatic plastic spraying, and has good chemical corrosion resistance, water resistance, existence resistance, high temperature resistance and the like when applied to guardrails.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to an electrostatic spray powder coating and its preparation method and application. Background technique [0002] Electrostatic spraying is to use electrostatic powder spraying equipment (electrostatic spraying machine) to spray powder coating on the surface of the workpiece. Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powder coating; the powder coating passes High temperature baking, leveling and curing, to become the final coating with different effects (different types of powder coating effects). Compared with the traditional painting process, the electrostatic spraying process has significant advantages, no thinner is required, the construction has no pollution to the environment, and is non-toxic to the human body; the coating has excellent appearance quality, strong adhesion and mechanical strength; the...

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): C09D175/06C09D5/46C09D7/61C09D5/08C08G18/42
CPCC08G18/4263C08K2003/2272C09D5/033C09D5/08C09D5/18C09D175/06C08K3/22
Inventor 曾庆刚
Owner 长沙金久锌钢型材有限公司