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

High-hardness epoxy-polyester powder coating composition, preparation method and application thereof

A powder coating, high hardness technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of incomparable coating surface hardness, low cross-linking density of polyester system, coating scratches, etc. Achieve the effects of avoiding poor performance, good adhesion, and unaffected weather resistance

Active Publication Date: 2019-03-26
NIPPON PAINT TIANJIN +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low cross-linking density of the polyester system, there are currently no products on the market that are completely comparable to polyurethane or acrylic systems. Even if some manufacturers promise that the product can reach 4H, this index is generally based on whether the coating is scratched. Evaluation, not whether the coating is scratched
The reason why the scratch level of the coating cannot be evaluated is that the resin system migrates to the coating surface during the curing process, resulting in less hardening fillers on the outermost surface of the coating than in theory. At present, such systems rely entirely on adding fillers. To enhance the hardness, so the hardness of the coating surface is not comparable to that of acrylic or polyurethane systems

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
  • High-hardness epoxy-polyester powder coating composition, preparation method and application thereof
  • High-hardness epoxy-polyester powder coating composition, preparation method and application thereof
  • High-hardness epoxy-polyester powder coating composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A kind of high hardness epoxy-polyester type powder coating composition, comprises the component of following parts by weight shown in table 1:

[0065] Table 1

[0066] components

specific model

parts by weight

polyester resin

P5086

33

Epoxy resin A

303L

23.9

Epoxy resin B

NPCN704

3

High functional epoxy

4135CE

1.0

Isocyanate dimer

B1530

1.0

PTFE wax

SST-3D

1.0

Auxiliary

GLP588+701+benzoin

2.1

carbon black

HB2185

1.0

Hardening filler

CP30

35

[0067] First, accurately weigh the raw materials according to the formula components in Table 1, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5 to 10 minutes), and then put the evenly mixed raw materials into the twin-screw extruder at a constant speed , melted and extruded at 90-100°C, passed through cooling rolls and pressed into tablets, aft...

Embodiment 2

[0071] A kind of high hardness epoxy-polyester type powder coating composition, comprises the component of following parts by weight shown in table 2:

[0072] Table 2

[0073]

[0074]

[0075] First, accurately weigh the raw materials according to the formula components in Table 2, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5 to 10 minutes), and then put the evenly mixed raw materials into the twin-screw extruder at a constant speed , melted and extruded at 90-100°C, passed through cooling rolls and pressed into tablets, after the tablets were cooled at natural temperature, the tablets were coarsely crushed with a pulverizer, and the obtained materials were cooled and ground with a pulverizer Finely pulverize, sieve with a 180-mesh sieve, and sieve through the 180-mesh sieve for natural cooling to finally obtain the high-hardness epoxy-polyester powder coating composition with uniform particle size.

[0076] Degrease the a...

Embodiment 3

[0079] A kind of high hardness epoxy-polyester type powder coating composition, comprises the component of following weight parts shown in table 3:

[0080] table 3

[0081] components

specific model

parts by weight

polyester resin

P5086

37.1

Epoxy resin A

303L

25.1

Epoxy resin B

NPCN704

4

High functional epoxy

4135CE

1.0

Isocyanate dimer

B1530

2.0

PTFE wax

SST-3D

0.7

Auxiliary

GLP588+701+benzoin

2.1

carbon black

HB2185

1.0

Hardening filler

CP30

27

[0082] First, accurately weigh the raw materials according to the formula components in Table 3, and mix them evenly in the premixing tank through high-speed rotation (premixing time is 5 to 10 minutes), and then put the evenly mixed raw materials into the twin-screw extruder at a constant speed , melted and extruded at 90-100°C, passed through cooling rolls and pressed into tablets, afte...

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
acid valueaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
purityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-hardness epoxy-polyester powder coating composition, a preparation method thereof and application of the composition in outer part coating. The coating composition is prepared from polyester resin, epoxy resin A, epoxy resin B, high functional epoxy resin, isocyanate dimer, polytetrafluoroethylene wax, auxiliaries, pigment and hardening filler. The preparation methodof the coating composition comprises the following steps: uniformly mixing the polyester resin, a triglycidyl isocyanurate curing agent, high functional epoxy resin, isocyanate dimer, polytetrafluoroethylene wax, auxiliaries, pigment and filler, sequentially performing melt extrusion, tableting, cooling, coarse breaking, fining and greening and screening. The high-hardness epoxy-polyester powdercoating has excellent hardness performance for base materials, has the optimized adhesion with the base materials, has good binding performance and hardness performance for base materials, has unaffected weather-proof performance, and has good scraping resistance.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a high-hardness epoxy-polyester powder paint composition, a preparation method and an application thereof. Background technique [0002] The appearance parts of outdoor items such as sports equipment, outdoor building curtain walls, and outdoor place guardrails are exposed to the outdoor environment for a long time, and are easily affected by the outside world and cause scratches, which in turn cause scratches on the surface of the coating film, which not only affects the appearance of the appearance parts, It is also easy to cause damage to the coating, which in turn affects the performance of the appearance parts. [0003] The methods for preparing high-hardness products in the powder coating industry, especially products that can reach 4H pencil hardness, generally fall into the following three situations: [0004] 1. Polyurethane system: [0005] Using...

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): C09D167/00C09D163/00C09D5/03B05D7/24
CPCC09D167/00C09D5/03C09D5/033B05D7/24C08L2201/08C08L2205/025C08L2205/035C08L63/00C08L27/18C08K3/04
Inventor 李景红王春方潘高健解晓雷韩润志苏兰广
Owner NIPPON PAINT TIANJIN
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