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Polyaspartic acid coating for heavy corrosion prevention as well as preparation method and application thereof

A polyaspartic acid, heavy-duty anti-corrosion technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of fast handling, environmental protection and green, and achieve the effects of shortening hardening time, low VOC, and improving curing rate

Active Publication Date: 2020-04-10
WUXI HUADONG ZINDN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the system of epoxy zinc-rich primer, epoxy mica iron intermediate paint, polyurethane or fluorocarbon topcoat can no longer meet the requirements of fast handling and environmental protection.

Method used

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  • Polyaspartic acid coating for heavy corrosion prevention as well as preparation method and application thereof
  • Polyaspartic acid coating for heavy corrosion prevention as well as preparation method and application thereof
  • Polyaspartic acid coating for heavy corrosion prevention as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Component A:

[0022]

[0023] Table 1 Composition of Group A

[0024] Preparation process: Put component 1-7, 800 rpm into the tank and stir for 20 minutes, add components 8 and 9, stir for 20 minutes at 800 rpm, and then grind all the materials to a fineness of 30um or less through a grinder (specifically ground, 25-30um), through 200 mesh filter packs to obtain the first component. In resin SupPu1, R is -CH 3 , X is -CH 2 ; In resin SupPu2, R is -CH 2 -CH 3 , X is (CH 2 ) 15 .

[0025] Component B: Bayer N3390

[0026] The ratio of A to B is 5:1 (mass ratio)

[0027] When in use, mix components A and B evenly at a mass ratio of 5:1, then add a small amount of diluent (the diluent is butyl acetate, the mass ratio of component A: component B: diluent 5:1:0.5) and spray That's it. The coating has high solid content and low VOC. The product can form hardness within 20 minutes (the hardness is measured as 3H (Mitsubishi pencil), GB / T 6739), and it can be tr...

Embodiment 2

[0031] Part A

[0032]

[0033]

[0034] Table 3 Composition of Group A

[0035] The preparation process of component A: Put 1-7 components into the tank, stir for 20 minutes at 800 rpm, add components 8 and 9, stir for 20 minutes at 800 rpm, and then grind all the materials through a grinder until fine Degree below 30um (specifically, 25-30um), through 200 mesh filter screens, filter and package to obtain the first component. In resin SupPu1, R is -CH 3 , X is -(CH 2 ) 2 ; In resin SupPu2, R is -CH 2 -CH 3 , X is (CH 2 ) 16 .

[0036] Component B: BASF HI-190

[0037] The ratio of A and B components is 5:1 (mass ratio):

[0038] When in use, mix components A and B evenly at a mass ratio of 5:1, then add a small amount of diluent (the diluent is butyl acetate, the mass ratio of component A: component B: diluent 5:1:0.5) and spray That's it. The coating has high solid content and low VOC. The product can form hardness within 30 minutes (the hardness is measur...

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Abstract

The invention relates to a polyaspartic acid coating for heavy corrosion prevention as well as a preparation method and application thereof. The polyaspartic acid coating for heavy corrosion prevention is prepared by mixing a component A and a component B at a mass ratio of 5: 1, wherein the component A is prepared from the following components in parts by weight: 12 to 18 parts of a butyl ester,15 to 25 parts of resin SupPu1, 7 to 16 parts of resin SupPu2, 1 to 1.5 parts of polyamide wax slurry, 0.5 to 1 part of a dispersing agent, 0.5 to 1 part of an antifoaming agent, 0.2 to 0.5 part of aleveling agent, 15 to 20 parts of titanium dioxide and 35 to 45 parts of silica powder; the component B is a curing agent. By designing the contents of the SupPu1 and the SupPu2, coating products withdifferent reaction rates can be obtained, the curing rate of the coating is greatly reduced, the hardening time of the coating is shortened, and the requirements of rapid carrying, environmental protection and greenness can be met.

Description

technical field [0001] The invention relates to a polyaspartic acid coating for heavy anticorrosion and its preparation method and application. Background technique [0002] The steel structure in the heavy-duty anti-corrosion industry usually adopts a three-layer matching scheme of zinc-rich coating system to solve the corrosion problem of steel. With the increasingly stringent environmental protection policies, the original extensive outdoor spraying operations are gradually banned, and manufacturers turn to indoor spraying operations. Due to the limited indoor space and the large number of steel structures that need to be processed, the manufacturers of the processed components hope to transport them out in the shortest possible time to save indoor spraying space, which puts forward very high requirements on the curing rate of the paint. In addition, there are also requirements for the types of paints, and paints with low odor and low VOC are highly regarded. At present...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D5/08C09D7/61
CPCC08K2003/2241C08L2205/025C09D5/08C09D179/08C09D7/61C08L79/08C08K3/22C08K3/36
Inventor 杨志华周贤辉褚路轩
Owner WUXI HUADONG ZINDN TECH
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