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Double-component anti-corrosion coating

An anti-corrosion coating, two-component technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings and other directions, can solve the problems of inconvenient construction of large objects in cold seasons, poor curing performance of epoxy resin paint, slow curing and other problems. Good UV resistance, good corrosion resistance, easy construction

Inactive Publication Date: 2021-05-07
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, general-purpose epoxy resin paints have poor curing performance and slow curing at low temperatures, which is not convenient for cold season construction of large objects such as ships, bridges, harbors, and oil tanks

Method used

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  • Double-component anti-corrosion coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of silicone-modified polyamide resin

[0026] (1) Prepare polyamide resin I according to the following steps:

[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 to remove the solvent to obtain polyamide resin I.

[0034] The general formula of polyam...

Embodiment 2

[0048] The two-component anti-corrosion coating provided in this embodiment includes component A and component B, wherein component B is a curing agent component, and this embodiment adopts 4 different materials as the components of the two-component anti-corrosion coating Divide B to set up 4 treatment groups. The specific setting method of each treatment group is: treatment IA, the polyamide resin I prepared in Example 1 is used as component B; treatment IIA, the polyamide resin II prepared in Example 1 is used as component B; treatment For IIIA, commercially available polyamide 651 is used as component B; for IVA, commercially available triethylenetetramine is 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 pr...

Embodiment 3

[0055] The two-component anti-corrosion coating that this embodiment provides comprises component A and component B, and the raw material that this embodiment is used to prepare component A is as shown in Table 2, respectively adopts 2 kinds of different epoxy resins as in Table 2 The epoxy resin used to prepare component A is to set up two groups of treatment groups: process IB, use the epoxy resin I prepared in Example 1 as the epoxy resin used to prepare component A; process IIB, use commercially available Bisphenol A was used as the epoxy resin used to formulate Part A. According to Table 2, each treatment group mixed the required raw materials in proportion and fully mixed to obtain component A. Component B is the curing agent component, and the polyamide resin I prepared in Example 1 is used as the component B for each treatment group in this example. When using two-component anti-corrosion coatings of each treatment group, mix component A and component B according to t...

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Abstract

The invention provides a double-component anti-corrosion coating which comprises a component A and a component B. The component A comprises the following components in parts by mass: 30-70 parts of epoxy resin, 10-15 parts of metal oxide and 10-35 parts of organic solvent; and the component B comprises the following components in parts by mass: 30-70 parts of polyamide resin. The polyamide resin can be dissolved in various solvents and also has good miscibility with the epoxy resin, the polyamide resin contains organic silicon, so that the polyamide resin has high reaction activity, after the polyamide resin is mixed with the epoxy resin, a cross-linking curing reaction can be carried out as long as a low temperature is reached, and therefore, the two-component anti-corrosion coating provided by the invention has good quick-drying property. In addition, the polyamide resin contains long carbon chains and polar groups, and after the polyamide resin is mixed with the epoxy resin, the adhesive force and toughness of the epoxy resin coating can be remarkably improved.

Description

technical field [0001] The invention belongs to the field of chemical coatings, and in particular relates to a two-component anticorrosion. Background technique [0002] Antirust paint is a coating that protects metal surfaces from chemical or electrochemical corrosion from the atmosphere, sea water, etc. Mainly divided into two categories of physical and chemical antirust paint. The former relies on the proper coordination of pigments and paints to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite antirust paint, etc.; the latter relies on the chemical antirust effect of antirust pigments, such as red Dan, zinc yellow antirust paint, etc. 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, varnishes, and enamel for metals, electrical appliances, and outdoor equip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C08G59/44
CPCC09D163/00C09D5/08C09D7/61C08G59/44C08K2003/2213C08K2003/2244C08K2201/011C08K2003/2272C08K2003/2296C08K3/22
Inventor 周伟建谢寅峰麦炜煜符传杰黎应棋许金河谢仲洪周靖洋巫甲亮韩妮
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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