Water-based organic silicon high-temperature-resistant coating and preparation method thereof

A high-temperature-resistant coating and high-temperature-resistant filler technology, which is applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as limited high-temperature resistance, long-term use, and failure to meet environmental protection and market requirements, and achieve low VOC content. Excellent performance and anti-corrosion performance, and the effect of promoting room temperature curing

Active Publication Date: 2022-01-14
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing water-based silicone high-temperature resistant coatings are still limited in high-temperature resistance, and are only suitable for environments below 400°C, and cannot be used for a long time at higher temperatures. Solvent-based silicone coatings are still used in high-temperature protection fields, and the widespread use of solvent-based silicone coatings still does not meet environmental protection and market requirements. It is necessary to develop water-based silicone high-temperature resistant coatings that can withstand above 400°C to replace existing high-temperature protection applications. Solventborne Silicone Coatings for the Field

Method used

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  • Water-based organic silicon high-temperature-resistant coating and preparation method thereof
  • Water-based organic silicon high-temperature-resistant coating and preparation method thereof
  • Water-based organic silicon high-temperature-resistant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A kind of waterborne organosilicon high temperature resistant coating, its formula is as table 1;

[0062] Table 1: Coating formulation of Example 1

[0063]

[0064] Among them, the water-based silicone resin is made by mixing DOWSIL 8016 and 3141 at a mass ratio of 7:1.

[0065] The high temperature resistant filler is composed of modified silica powder and wet-process sericite powder in a mass ratio of 4:1.

[0066] The preparation method comprises the following steps:

[0067] (1) Weigh each component in proportion;

[0068](2) Add 1.5 parts of dispersant BYK-190, 1.0 part of wetting agent TEGO 4100, 1.0 part of defoamer TEGO 901W, and 0.6 part of rheological additive BENTONE LT into deionized water in sequence, and stir evenly at low speed (400r / min) After that, disperse at high speed (1200r / min) for 20min;

[0069] (3) Add 40 parts of water-based silicone resin and disperse at high speed (1200r / min) for 10 minutes;

[0070] (4) Slowly add 0.6 parts of drie...

Embodiment 2-3

[0072] The coating formula of embodiment 2-3 sees table 2 and table 3 respectively, and preparation method is with embodiment 1,

[0073] Table 2: Coating formulation of Example 2

[0074]

[0075] Among them, the water-based silicone resin is made by mixing DOWSIL 8016 and 3141 at a mass ratio of 8:1.

[0076] The high temperature resistant filler is composed of modified silica powder and wet-process sericite powder in a mass ratio of 5:1.

[0077] Table 3: Coating formula of embodiment 3

[0078]

[0079] Among them, the water-based silicone resin is made by mixing DOWSIL 8016 and 3141 at a mass ratio of 9:1.

[0080] The high temperature resistant filler is composed of modified silicon micropowder and wet-process sericite powder in a mass ratio of 6:1.

[0081] See Table 4 for the main performance test results of the water-based silicone high-temperature resistant coating obtained in Examples 1-3 and the commercially available German Wacker SILRES MP 50E water-base...

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Abstract

The invention relates to a water-based organic silicon high-temperature-resistant coating and a preparation method thereof, wherein the water-based organic silicon high-temperature-resistant coating comprises the following components in percentage by mass: 40.0-50.0% of water-based organic silicon resin, 0.8-1.5% of a dispersing agent, 0.5-1.0% of a wetting agent, 0.7-1.0% of a defoaming agent, 0.2-0.6% of a rheological additive, 9.0-17.0% of a high-temperature-resistant filler, 9.0-13.0% of a high-temperature-resistant pigment, 3.0-6.0% of an anti-rust pigment, 0.3-0.6% of a composite drier, 0.2-1.5% of a flash rust resisting agent, and 15.0-20.0% of deionized water, wherein the water-based organic silicon resin is formed by mixing DOWSIL 8016 and 3141 according to the mass ratio of (7-9):1. The preparation method comprises the steps: sequentially adding the dispersing agent BYK-190, the wetting agent, the defoaming agent and the rheological additive into the deionized water, uniformly stirring, dispersing at a high speed, adding the water-based organic silicon resin, dispersing at a high speed, stirring at a low speed, adding the drier and the anti-flash-rust agent, and uniformly dispersing at a medium speed to obtain the coating. The water-based organic silicon high-temperature-resistant coating does not contain a cosolvent, the VOC content is less than 20 g / L, and the water-based organic silicon high-temperature-resistant coating is environmentally friendly and excellent in high temperature resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based organosilicon high temperature resistant coating and a preparation method thereof. Background technique [0002] The country's environmental protection requirements are becoming increasingly strict. With the release of VOC (volatile organic compound) emission standards, solvent-based coatings can no longer meet policy and market requirements. Enterprises' awareness of environmental protection is constantly improving. Green environmental protection coatings have become the development trend of the coatings industry. . Among them, water-based coatings have developed rapidly in the fields of wood coatings, containers, construction machinery and steel structures, and have been vigorously promoted and applied. However, the existing water-based silicone high-temperature resistant coatings are still limited in high-temperature resistance, and are only suitable for enviro...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/61C09D7/62C09D7/63C09D5/08
CPCC09D183/04C09D7/61C09D7/62C09D7/63C09D5/18C09D5/084C08L2201/08C08K2201/014C08K2003/328C08L83/04C08K9/00C08K3/36C08K3/34C08K5/0091C08K5/098C08K3/32
Inventor 张耿涛刘翰锋刘虎冰杨明亮方大庆
Owner 洛阳双瑞防腐工程技术有限公司
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