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Preparing method for high-pressure-resistant tough epoxy paint

A technology of epoxy coating and high pressure resistance, which is applied in the field of coatings. It can solve the problems of epoxy coatings that are not resistant to high temperature, prone to defects in the coating film, and affect the appearance of equipment, and achieve cooking resistance, corrosion resistance, excellent physical and chemical properties, Effect of excellent elongation at break

Inactive Publication Date: 2017-01-04
TIANJIN MEISHIBANG PAINT CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the high-voltage anti-corrosion coating products used on the surface of high-voltage electrical appliances in China usually have a coating film that can withstand high temperature and high pressure. However, in the case of high humidity and high temperature, the coating film is prone to rapid aging and loss of toughness, and is prone to cracking and falling off.
This is because high-voltage electrical appliances work at a high temperature, and ordinary epoxy coatings are not resistant to high temperatures. After being used for a long time in a high-temperature and high-humidity environment, the coating film is prone to defects, which seriously affects the appearance of the equipment, and may even cause electric shock and fire. other security risks

Method used

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  • Preparing method for high-pressure-resistant tough epoxy paint
  • Preparing method for high-pressure-resistant tough epoxy paint
  • Preparing method for high-pressure-resistant tough epoxy paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of high-pressure resistant tough epoxy coating, this coating is made of the raw material that comprises following percentage by weight: epoxy resin 25%, pigment 15%, filler 35%, diluent 10%, auxiliary agent 5%, curing agent 10%; The additives include dispersants, leveling agents, defoamers and rheological additives, and the mass ratio of the dispersants, leveling agents, defoamers and rheological additives is 1:0.5:0.5: 3.

[0027] The preparation method of the high-pressure-resistant tough epoxy coating mainly includes the preparation method of the main agent and the preparation method of the curing agent, and the preparation method of the main agent includes the following steps:

[0028] (1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0029] (2) Add pigments and defoamers to the mixer in step (1) successively, after fully stirring evenly, add filler, and obtain grinding slurry after ...

Embodiment 2

[0033] A kind of high pressure resistant tough epoxy coating, this coating is made of the raw material that comprises following percentage by weight: epoxy resin 25%, pigment 15%, filler 33%, diluent 10%, auxiliary agent 5%, curing agent 12%; The additives include dispersants, leveling agents, defoamers and rheological additives, and the mass ratio of the dispersants, leveling agents, defoamers and rheological additives is 1:0.5:0.5: 3.

[0034] The preparation method of the high-pressure-resistant tough epoxy coating mainly includes the preparation method of the main agent and the preparation method of the curing agent, and the preparation method of the main agent includes the following steps:

[0035] (1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0036] (2) Add pigment and defoamer to the mixer in step (1) successively, after fully stirring evenly, add filler, and obtain grinding slurry after be...

Embodiment 4

[0047] A kind of high-pressure resistant tough epoxy coating, this coating is made of the raw material that comprises following percentage by weight: 30% of epoxy resin, 15% of pigment, 25% of filler, 10% of diluent, 5% of auxiliary agent, 15% of curing agent; The additives include dispersants, leveling agents, defoamers and rheological additives, and the mass ratio of the dispersants, leveling agents, defoamers and rheological additives is 1:0.5:0.5: 3.

[0048] The preparation method of the high-pressure-resistant tough epoxy coating mainly includes the preparation method of the main agent and the preparation method of the curing agent, and the preparation method of the main agent includes the following steps:

[0049] (1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0050] (2) Add pigment and defoamer to the mixer in step (1) successively, after fully stirring evenly, add filler, and obtain grindi...

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Abstract

The invention provides a preparing method for high-pressure-resistant tough epoxy paint. The preparing method comprises a main agent preparing method and a curing agent preparing method. The main agent preparing method comprises the following steps that firstly, epoxy resin, a thinning agent and a dispersing agent are added into a stirrer in sequence and stirred evenly under the rotating stirring speed of 800 rpm; secondly, pigment and a defoaming agent are added into the stirrer in the first step in sequence, filler is added after the mixture is sufficiently stirred evenly, the mixture is ground by a grinding miller, and ground paste is obtained; thirdly, the ground paste is put into the stirrer, a flatting agent and a rheology modifier are added in the stirring state and stirred evenly, and the wet-cured high-elasticity solvent-free epoxy paint main agent is obtained. The high-pressure-resistant tough epoxy paint is applied to paint for shells of high-voltage electrical apparatuses, the extreme temperature resistance of coatings of the product can reach 800 DEG C (instant), the coatings can be resistant to high pressure and steaming, and the paint coatings have good toughness and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a preparation method of high-pressure-resistant tough epoxy coatings. Background technique [0002] At present, the high-voltage anti-corrosion coating products used on the surface of high-voltage electrical appliances in China usually have a coating film that can withstand high temperature and high pressure. However, when the humidity and temperature are high, the coating film is prone to rapid aging and loss of toughness, and is prone to cracking and falling off. This is because high-voltage electrical appliances work at a high temperature, and ordinary epoxy coatings are not resistant to high temperatures. After being used for a long time in a high-temperature and high-humidity environment, the coating film is prone to defects, which seriously affects the appearance of the equipment, and may even cause electric shock and fire. and other security risks. Contents of the invention [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D109/02C09D201/00C09D5/08C09D7/12C08G59/60
CPCC09D163/00C08G59/60C08L2201/08C08L2205/03C09D5/08C09D5/18C08L9/02C08L101/00C08L77/00C08K3/34C08K2003/3045
Inventor 马翔宇于涛
Owner TIANJIN MEISHIBANG PAINT CHEM IND
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