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Copper-aluminum condenser pipe coating and use method thereof

A technology for condensation pipes and coatings, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problem of low performance, and achieve the effects of improved anti-corrosion performance, easy operation, and extended service life.

Active Publication Date: 2021-05-07
JIANGSU ZHAOHUI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the technical problem that the anti-corrosion coating in the prior art has low performance when applied to the junction of two metals

Method used

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  • Copper-aluminum condenser pipe coating and use method thereof
  • Copper-aluminum condenser pipe coating and use method thereof
  • Copper-aluminum condenser pipe coating and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] First, prepare the B component.

[0043] (1) Synthesis of the first polymer.

[0044] In the raw material of synthesizing the first polymer, according to mass percentage, comprise following components:

[0045]

[0046] Among them, the bifunctional epoxy reactive diluent is HELOXY MODIFIER 68, the polyamide curing agent is selected from 200# polyamide epoxy curing agent (polyamide curing agent with an amine value of 200), and the tertiary amine accelerator is DMP-30 tertiary amine Accelerator.

[0047] The synthetic method of the first polymer comprises the steps:

[0048] (1) xylene and n-butanol are mixed evenly to obtain a mixed solvent;

[0049] (2) Take part of the mixed solvent, part of the difunctional epoxy reactive diluent, and all of the 1,10-decanedithiol and mix them evenly in the reactor, heat up under reflux, and add part of the tertiary amine accelerator dropwise while stirring , and then heat preservation reaction;

[0050] (3) After the reaction...

Embodiment 2

[0072] The preparation method and method of use of the coating are the same as in Example 1, the difference being the selection and proportioning of raw materials:

[0073] (1) In the raw material of synthesizing the first polymer, mass percent is:

[0074]

[0075] Wherein, the difunctional epoxy reactive diluent is a difunctional 205 epoxy reactive diluent, namely polyethylene glycol diglycidyl ether.

[0076] The paint is recorded as S2.

Embodiment 3

[0078] The preparation method and method of use of the coating are the same as in Example 1, the difference being the selection and proportioning of raw materials:

[0079] (1) When preparing component B, each raw material of component B includes by mass percentage:

[0080]

[0081] Among them, JLY-155 is selected as the liquid polysulfide rubber.

[0082] The paint is designated as S3.

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PUM

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Abstract

The invention discloses a copper-aluminum condenser pipe coating and a using method thereof, and belongs to the technical field of chemical coating production, the copper-aluminum condenser pipe coating comprises a component A and a component B. The component B is a curing agent, the curing agent comprises a first polymer with a molecular chain containing-SH groups, and the component A comprises epoxy resin, auxiliaries, filler and the like; when in use, the component A and the component B are firstly uniformly mixed, the viscosity is adjusted, and the mixture is cured for a period of time and then can be directly used. The curing agent in the coating contains-SH, one end of the-SH can form a metal bond and a hydrogen bond with the surfaces of metals such as copper, aluminum and the like, so that the coating has high adhesive capacity on the surface of the copper-aluminum condenser pipe, meanwhile, the coating has good corrosion resistance and flexibility and can meet the use requirements of the copper-aluminum condenser pipe.

Description

technical field [0001] The invention belongs to the technical field of chemical paint production, and in particular relates to a copper-aluminum condensation pipe paint and a use method. Background technique [0002] The condensing pipe used in the refrigerator is usually a copper-aluminum composite condensing pipe. In order to improve the anti-corrosion performance of the condensing pipe, the joint of copper and aluminum usually needs to be coated with anti-corrosion paint on the bent part of the condensing pipe. At present, epoxy coating is usually used. Epoxy coating has good adhesion and good anti-corrosion performance, but it needs to be bent at the bending part, and the bending part is the junction of two non-ferrous metals, so coating often occurs The phenomenon of shedding. [0003] Conventional epoxy coatings have good adhesion to ferrous metals, and there are also epoxy coatings on the market that can be applied to non-ferrous metals, but such epoxy coatings are u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D5/08C08G59/66
CPCC09D163/00C09D5/08C08G59/66C08L63/00
Inventor 王宏辉马年
Owner JIANGSU ZHAOHUI CHEM