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High-temperature-resistant and tough epoxy coating

An epoxy coating, high pressure technology, applied in the field of coatings, can solve the problems of epoxy coatings not resistant to high temperature, prone to defects in the coating film, affecting the appearance of equipment, etc., to achieve good adhesion, excellent physical and chemical properties, and excellent fracture. The effect of elongation

Inactive Publication Date: 2017-01-11
TIANJIN MEISHIBANG PAINT CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • High-temperature-resistant and tough epoxy coating

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Effect test

Embodiment 1

[0029] 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.

[0030] 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:

[0031] (1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0032] (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

[0036] 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.

[0037] 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:

[0038] (1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0039] (2) Add pigments and defoamers to the mixer in step (1) successively, after fully stirring evenly, add filler, and obtain grinding slurry after ...

Embodiment 4

[0050] 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.

[0051] 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:

[0052](1) add epoxy resin, diluent, dispersant in the mixer successively, stir under the stirring speed of rotating speed 800rpm;

[0053] (2) Add pigments and defoamers to the mixer in step (1) successively, after fully stirring evenly, add filler, and obtain grind...

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Abstract

The invention provides a high-temperature-resistant and tough epoxy coating. The coating is prepared from raw materials in percentage by weight as follows: 25%-35% of epoxy resin, 5%-25% of a pigment, 15%-35% of filler, 5%-15% of a diluent, 1%-5% of aids and 10%-15% of a curing agent; the aids comprise a dispersant, a leveling agent, an antifoaming agent and a rheological aid in the mass ratio being (1-3):(0.2-0.8):(0.2-0.8):(1-5). The high-temperature-resistant and tough epoxy coating is applied to casing parts of high-voltage electrical appliances, and a coating film has the extreme temperature resistance up to 800 DEG C (instantaneous), can resist high pressure and cooking and has good toughness and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a high-pressure resistant tough epoxy coating. 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 [0003] In view of this, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/18C09D5/08C09D7/12C08G59/60
CPCC09D163/00C08G59/60C09D5/08C09D5/18C08L77/00C08K3/34
Inventor 马翔宇于涛
Owner TIANJIN MEISHIBANG PAINT CHEM IND
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