Water-based fluorocarbon finish paint and preparation method and application thereof

A water-based fluorocarbon and topcoat technology, applied in the field of coatings, can solve problems such as affecting the use effect, low VOC content, and easy foaming

Inactive Publication Date: 2021-04-23
WUXI HUADONG ZINDN TECH
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The VOC content of water-based polyurethane topcoat is low, but some properties in the heavy-duty anti-corrosion industry cannot meet customer r...

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
  • Water-based fluorocarbon finish paint and preparation method and application thereof
  • Water-based fluorocarbon finish paint and preparation method and application thereof
  • Water-based fluorocarbon finish paint and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Preparation of water-based fluorocarbon topcoat.

[0020] Component A:

[0021] Table 1

[0022]

[0023] Put components 1-7 into the tank, stir at 800 rpm for 20 minutes, then grind all the materials through a grinder to a fineness below 30 μm, add components 8-11 in turn, stir at 800 rpm for 30 minutes, and Filter and pack with a 200-mesh filter to obtain component A of water-based fluorocarbon coatings.

[0024] B component:

[0025] The water-based isocyanate curing agent is selected from United Curing Chemicals 3598T.

[0026] When in use, mix A and B evenly at a mass ratio of 5:1, then add a small amount of water (8-10wt%) to spray.

[0027] The performance test results of the prepared waterborne fluorocarbon topcoat are shown in Table 1.

Embodiment 2

[0028] Example 2 Preparation of water-based fluorocarbon topcoat.

[0029] Component A:

[0030] Table 2

[0031]

[0032] Put components 1-7 into the tank, stir at 800 rpm for 20 minutes, then grind all the materials through a grinder to a fineness below 30 μm, add components 8-11 in turn, stir at 800 rpm for 30 minutes, and Filter and pack with a 200-mesh filter to obtain component A of water-based fluorocarbon coatings.

[0033] B component:

[0034] Water-based isocyanate curing agent combined curing chemistry 3598T

[0035] When in use, mix A and B evenly at a mass ratio of 5:1 and then add 8-10% of water for spraying.

Embodiment 3

[0046] Example 3 Application of water-based fluorocarbon topcoat.

[0047] The water-based fluorocarbon topcoat prepared in Example 1 is used in conjunction with the water-based cold-sprayed zinc and water-based epoxy mica iron of Wuxi Huadong Zinc Shield, wherein the water-based cold-sprayed zinc is used as a primer, and the water-based epoxy mica iron intermediate paint is used as an intermediate Paint, water-based fluorocarbon topcoat is sprayed as a topcoat for corrosion protection of steel structures. Wherein, the water-based fluorocarbon topcoat in comparative example 1 is Baotashan paint.

[0048] The specific implementation steps are as follows:

[0049] table 5

[0050]

[0051] Table 6

[0052] Test items example 1 Example 2 Contrast 1 Adhesion (MPa) 12 10 12 Impact resistance (g*cm) 50 50 50 water resistant 3500 3300 2000 Salt spray resistance 5000 5500 2000 Resistant to 5% sulfuric acid 7 days pass 7 da...

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 discloses a water-based fluorocarbon finish paint which comprises a component A and a component B. The component A comprises the following components in parts by weight: 1-5 parts of water-based polyamide wax slurry, 50-65 parts of water-based fluorocarbon emulsion, 0.5-1 part of fumed silica, 15-30 parts of titanium dioxide, 0.2-1 part of DPNB, 0.1-0.6 part of an antifoaming agent, 0.1-0.5 part of a leveling agent, and 5-15 parts of water; the component B is an isocyanate curing agent; and the mass ratio of the component A to the component B is (5-12): 1. The single-layer salt spray resistance of the water-based fluorocarbon finish paint can reach 3000 h or above, the water-based fluorocarbon finish paint has excellent corrosion resistance, the VOC is 85 g/L, emission reduction is obvious compared with 420 g/L of traditional solvent type fluorocarbon finish paint, and a coating matched with water-based cold spray zinc and water-based epoxy intermediate paint has excellent corrosion resistance, neutral salt spray resistance of 5000 h or above and aging resistance of 3000 h or above; the VOC is reduced by more than 80% compared with thetraditional solvent type set, and long-term protection can be provided for the steel structure.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based fluorocarbon topcoat and a preparation method and application thereof. Background technique [0002] Due to its super weather resistance and chemical resistance, fluorocarbon coatings are mainly used as long-life decoration and anti-harsh environment coatings in practical applications. At present, domestic fluorocarbon coatings mainly use organic solvents as the dispersion medium, and a large amount of organic gas will be generated during production and use. With the increasingly stringent national environmental protection requirements, the use of solvent-based coatings is gradually restricted. The VOC content of water-based polyurethane topcoat is low, but some properties in the heavy-duty anti-corrosion industry cannot meet customer requirements. In addition, the water-based fluorocarbon topcoat in the prior art is prone to foaming in the salt spray test, whi...

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): C09D127/12C09D5/08C09D7/61B05D1/36B05D7/16B05D7/26
CPCB05D7/16B05D7/26B05D7/58C08K2003/2241C09D5/08C09D127/12C09D7/61C08L77/00C08K3/22C08K3/36
Inventor 杨志华褚路轩周贤辉杨世超陈立庄
Owner WUXI HUADONG ZINDN TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap