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Epoxy zinc-rich primer

An epoxy zinc-rich primer and epoxy resin technology, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of weakened anti-rust effect of zinc powder, brittle anti-crack expansion ability, easy cracking and other problems , to achieve the effect of improving protection, reducing cracking and improving physical properties

Active Publication Date: 2020-11-27
浙江中泓新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned existing technical solutions have the following defects: in the actual use process, many steel products are used in the open air, and after the epoxy zinc-rich primer is painted on the steel surface, it is also exposed to the external environment
A big disadvantage of epoxy resin itself is that it is brittle after curing and has insufficient crack growth resistance.
However, in the above technical solution, no toughening treatment is done to the epoxy zinc-rich primer, that is to say, the epoxy zinc-rich primer in the above technical solution is prone to cracking under open air conditions
After the epoxy zinc-rich primer cracks, rainwater will directly contact the steel, and the anti-rust effect of the zinc powder in the epoxy zinc-rich primer will be greatly weakened, resulting in steel corrosion

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0088] The preparation process of the toughened modified epoxy resin specifically includes the following process steps:

[0089] S1: Preparation of acrylate oligomers, specifically adding acrylic monomers into n-butanol solvent in proportion, heating to 100°C in a water bath under the protection of nitrogen, and reacting for 2.5 hours to obtain acrylate oligomers;

[0090] S2: Epoxy resin modification, specifically mixing the epoxy resin and the acrylate oligomer obtained in step S1 in proportion, adding DMP-30 accelerator and reacting at 100°C for 1 hour to obtain the toughened modified ring oxygen resin.

[0091] Additives in component A include the following components by weight percentage:

[0092] Organic bentonite 20%;

[0093] Auxiliary 10%;

[0094] Anti-rust material 35%;

[0095] Filler 35%.

[0096] Among them, organic bentonite is produced by Tianlong Organic Soil Bentonite Co., Ltd.

[0097] Auxiliary agent then comprises the component of following weight pe...

Embodiment 1

[0126] The difference between embodiments 15-18 and embodiment 1 is that the weight percentage of each component in the toughened modified resin is calculated as the following table:

[0127]

[0128] The difference between embodiment 19-20 and embodiment 1 is that the weight percent of each component in the acrylate oligomer is calculated as the following table:

[0129]

[0130] The difference between Embodiment 21-26 and Embodiment 1 is that the weight percent of each component in the acrylic monomer is calculated as the following table:

[0131]

[0132] The difference between Examples 27-30 and Example 1 is that in the preparation process of the toughened modified epoxy resin, each parameter is calculated as the following table:

[0133]

[0134]

[0135] The difference between embodiments 31-37 and embodiment 1 is that the weight percent of each component in the additive is calculated as the following table:

[0136]

[0137] The difference between embod...

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Abstract

The invention relates to an epoxy zinc-rich primer, and belongs to the technical field of anticorrosive paints. The epoxy zinc-rich primer comprises the following components by weight: 90-95% of a component A, and 5-10% of a component B, wherein the component A is prepared from the following components in percentage by weight: 15-20% of toughened modified epoxy resin, 11-16% of an additive, 60-65%of zinc powder, and 8-13% of a mixed solvent; and the component B is prepared from the following components in percentage by weight: 65-75% of polyamide curing agent, and 25-35% of a mixed solvent. The epoxy zinc-rich primer has the advantage of higher toughness to reduce the possibility of cracking.

Description

technical field [0001] The invention relates to the technical field of anticorrosion paint, in particular to an epoxy zinc-rich primer. Background technique [0002] At present, my country's steel output ranks first in the world, and steel, as a metal material, is often easily corroded, resulting in performance degradation. Metal corrosion generally includes chemical corrosion, electrochemical corrosion and corrosion of chemical or electrochemical plus mechanical factors. Among them, the principle of electrochemical corrosion is based on impure metal or alloy and electrolyte solution. Due to the galvanic reaction, the more active metal atoms lose electrons and are corroded. In the corrosion process, there are anode and cathode areas, and the current can flow through the metal within a certain distance. Electrochemical corrosion is also the main way of steel corrosion currently recognized. [0003] For example, the corrosion mechanism of carbon steel is, because the standar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D5/24C09D7/65
CPCC08K2003/0893C08K2003/329C08L2205/06C09D5/106C09D5/24C09D163/00C09D7/65C08L33/20C08K13/06C08K9/12C08K3/32C08K7/00C08K3/34C08K3/08C08K5/3475
Inventor 傅月英周水祥
Owner 浙江中泓新材料科技有限公司
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