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Anti-corrosion epoxy resin coating

A technology of epoxy resin coatings and epoxy resins, which is applied in the direction of epoxy resin coatings, anti-corrosion coatings, coatings, etc., and can solve the problems of decreased anti-corrosion effect, easy degradation, broken chains, and increased aging

Active Publication Date: 2021-06-04
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, commonly used epoxy resins (such as bisphenol A epoxy resins) generally contain a large number of aromatic ether bonds, and the cured product is easily degraded and broken after being irradiated by sunlight. The resulting coating is exposed to air and sunlight for a long time. With the increase of time, the self-aging condition increases, and the anti-corrosion effect decreases exponentially

Method used

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  • Anti-corrosion epoxy resin coating
  • Anti-corrosion epoxy resin coating
  • Anti-corrosion epoxy resin coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of polyamide resin containing silicon atoms

[0026] Prepare the polyamide resin as follows:

[0027] Step 1: Add 54.42g glutaramide to 100.00g toluene, heat to 195°C for 15 minutes;

[0028] Step 2: Weigh 158.27g of polydimethylsiloxane (average DP is 100) and 2g of platinum (0)-1,3-diethylene-1,1,3,3-tetramethyldisiloxane;

[0029] Step 3: Add 5 g of polydimethylsiloxane dropwise to the reaction mixture;

[0030] Step 4: adding 0.8-1 g of platinum(0)-1,3-diethylene-1,1,3,3-tetramethyldisiloxane to the reaction mixture;

[0031] Step 5: adding the remaining polydimethylsiloxane dropwise to the reaction mixture;

[0032] Step 6: Add the remaining platinum(0)-1,3-diethylene-1,1,3,3-tetramethyldisiloxane to the reaction mixture, and continue the reaction for 1 hour, during which stirring is provided;

[0033] Step 7: negative pressure distillation, remove solvent, obtain the polyamide resin with following general structure: Marked as polyamide resin I...

Embodiment 2

[0043] The anti-corrosion epoxy resin coating provided in this embodiment includes component A and component B. In this example, by constructing variables in the formula of component A that constitutes the above-mentioned epoxy resin coating, four treatment groups are set, respectively marked as treatment IA, treatment IIA, treatment IIIA and treatment IVA. Adopt 3 kinds of different epoxy resins respectively as the epoxy resin that is used to prepare component A, to set above-mentioned treatment IA, treatment IIA, treatment IIIA: treatment IA, with the epoxy resin I that makes in the embodiment 1 as For the preparation of the epoxy resin of component A; process IIA, use the epoxy resin II prepared in Example 1 as the epoxy resin for the preparation of component A; process IIIA, use commercially available bisphenol A as the epoxy resin for the preparation of component A; The epoxy resin used to prepare component A; the raw materials used to prepare component A for treatment ⅠA...

Embodiment 3

[0054] The epoxy resin coating that this embodiment provides comprises component A and component B, and wherein, component B is curing agent component, and present embodiment adopts 2 kinds of different materials respectively as component B of epoxy resin coating to set 2 treatment groups. The specific arrangement of each treatment group is as follows: treatment IB, the polyamide resin I prepared in Example 1 was used as component B; treatment IIB, commercially available polyamide 651 was used as component B. The formula composition of component A of each treatment group is exactly the same, and the raw materials used to prepare component A are shown in Table 2. According to Table 2, the required raw materials are fully mixed in proportion to obtain component A. In this embodiment The epoxy resin I prepared in Example 1 is used to prepare the epoxy resin of component A.

[0055] When using the epoxy resin coatings of each treatment group, mix and mix component A and component...

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Abstract

The invention provides an anti-corrosion epoxy resin coating, which comprises a component A. The component A comprises, by mass, 30-70 parts of epoxy resin, the molecular structure of the epoxy resin comprises an epoxy group and a pyrrolidone ring, the epoxy group is directly connected with a ring-forming atom of the pyrrolidone ring or is directly connected with a ring-forming atom of the pyrrolidone ring through an alkylene group, the component A also comprises 10-15 parts of a metal oxide and 10-35 parts of an organic solvent. In an epoxy molecular structure adopted by the invention, the epoxy group is directly connected with the ring-forming atom of the pyrrolidone ring, the pyrrolidone ring does not have aromaticity, and compared with conventionally used epoxy resin, the content of aromatic ether bonds in the molecular structure is obviously low, so that the absorption of groups connected with the epoxy group to ultraviolet light is inhibited, the light stability of a cross-linked network in a paint film is effectively improved, which shows that the paint film has good weather resistance and corrosion resistance, and can resist yellowing for a long time and keep the paint surface smooth.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to an anti-corrosion epoxy resin coating. Background technique [0002] Epoxy resin refers to the general term for a molecular structure containing two or more epoxy groups and capable of forming a three-dimensional network cured product under appropriate conditions. Based on the advantages of high mechanical properties, strong adhesion, small curing shrinkage, and good chemical stability, epoxy resin is widely used in the field of coatings. General-purpose epoxy resin coatings have good adhesion to metals such as iron and aluminum. The paint film is tough and has strong corrosion resistance. It is widely used in the preparation of primers, topcoats, and varnishes for metals, electrical appliances, and outdoor equipment. , enamel, etc., to protect the substrate from the corrosion of corrosive materials such as the atmosphere, rain, fog, and sea water. However, commonly used epoxy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C08G59/26C08G59/44
CPCC09D163/00C09D5/08C09D7/61C08G59/26C08G59/44C08K2201/011C08K2003/2213C08K2003/2244C08K3/22C08K3/34
Inventor 周伟建李灿辉王维符传杰周靖洋谢仲洪许金河黎应棋宋献军谢寅峰
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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