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Gradient organic silicon heat-resisting coating

A technology of heat-resistant coatings and silicones, which is applied in the direction of coatings, etc., can solve the problems of poor self-drying performance and narrow heat-resistant temperature range of coatings, and achieve the effects of increased heat-resistant temperature, good anti-corrosion performance, and good adhesion performance

Active Publication Date: 2013-05-22
西安经建油漆有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of poor self-drying performance of the current organic silicon coating, especially the narrow heat-resistant temperature range of the coating

Method used

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  • Gradient organic silicon heat-resisting coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The synthesis process step of epoxy modified silicone resin solution of the present invention is as follows:

[0021] 1) Synthesis of organosilicon intermediates: Take 15kg of phenyltrichlorosilane, 8kg of dimethyldichlorosilane, 35kg of xylene, 30kg of ethanol, and 12kg of deionized water; Add 1 / 2 xylene to the hydrolysis kettle, drop the mixture of phenyltrichlorosilane, dimethyldichlorosilane and the remaining 1 / 2 xylene from the high position tank, and control the flow rate at 5.5 hours (at 5-6 within hours) after the dropwise addition, the hydrolysis temperature is controlled at 22°C (all within the range of 20-25°C), keep stirring for half an hour after the dropwise addition, and stand still for 3.5 hours (all within the range of 3-4 hours ), so that the chlorine ions and hydrogen ions in the above raw materials combine to generate hydrochloric acid and precipitate in the lower part of the hydrolysis kettle; let go of the acid water in the lower part of the hydrol...

Embodiment 2

[0024] The synthesis process step of epoxy modified silicone resin solution of the present invention is as follows:

[0025] 1) Synthesis of organosilicon intermediates: Take 20kg of phenyltrichlorosilane, 10kg of dimethyldichlorosilane, 40kg of xylene, 35kg of ethanol, and 15kg of deionized water; Add 1 / 2 xylene to the hydrolysis kettle, drop the mixed solution of 1-phenyltrichlorosilane, dimethyldichlorosilane and the remaining 1 / 2 xylene from the high position tank, control the flow rate at 6 hours to complete the dropwise addition, and hydrolyze The temperature is controlled at 25°C. After the dropwise addition, keep stirring for half an hour, and stand still for 4 hours, so that the chloride ions and hydrogen ions in the above raw materials combine to form hydrochloric acid and precipitate in the lower part of the hydrolysis kettle; let go of the acid water in the lower part of the hydrolysis kettle, and add Ionized water (dosage is not included in the formula), washed wi...

Embodiment 3

[0028] The synthesis process step of epoxy modified silicone resin solution of the present invention is as follows:

[0029] 1) Synthesis of organosilicon intermediates: Take 20kg of phenyltrichlorosilane, 10kg of dimethyldichlorosilane, 40kg of xylene, 35kg of ethanol, and 15kg of deionized water; Add 1 / 2 xylene to the hydrolysis kettle, drop the mixed solution of 1-phenyltrichlorosilane, dimethyldichlorosilane and the remaining 1 / 2 xylene from the high position tank, control the flow rate at 6 hours to complete the dropwise addition, and hydrolyze The temperature is controlled at 25°C. After the dropwise addition, keep stirring for half an hour, and stand still for 4 hours, so that the chloride ions and hydrogen ions in the above raw materials combine to form hydrochloric acid and precipitate in the lower part of the hydrolysis kettle; let go of the acid water in the lower part of the hydrolysis kettle, and add Ionized water (dosage is not included in the formula), washed wi...

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PUM

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Abstract

The invention relates to a gradient organic silicon heat-resisting coating which is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of no less than 65wt% epoxy modified organic silicon resin solution, 0.5 parts of dispersing agent BYK-110, 0.6 parts of organobentonite, 10-15 parts of dye, 3-5 parts of mica powder with the granularity of 350-450 meshes, 5-10 parts of precipitated barium sulphate with the granularity of 350-450 meshes, 5-10 parts of M-1 glass material, 5-8 parts of B-11 glass material, 5-10 parts of B-12 glass material and 5-10 parts of mixing solvent (the ratio of dimethylbenzene to butanol is 7:3), wherein the epoxy modified organic silicon resin solution is prepared from the following raw materials in parts by weight: 30-40 parts of E-20 epoxy resin, 50-60 parts of 65-70wt% organic silicon middle body, and 5-10 parts of dimethylbenzene. The coating can be used for solving the defects that the conventional organic silicon product is low in thermal resistance when being compared with an inorganic coating, and the coating has good thermal-resistance. The coating provided by the invention is applicable to decoration and protection of a large-sized thermal-resisting component, and the coated component can endure high temperature of 400-1,000 DEG C for long term.

Description

technical field [0001] The invention relates to a cross-linking reaction between the epoxy group of the modified silicone resin and the active hydrogen of polyamide at room temperature, and the secondary film formation of the glass frit in the formula at high temperature, which can achieve good drying performance and Gradient silicone heat-resistant coating with excellent physical and chemical properties. Background technique [0002] The current silicone heat-resistant coating has poor self-drying performance. A silicone heat-resistant coating only has good heat resistance at a certain temperature. When the temperature exceeds or falls below this temperature, the protective performance of the coating will be greatly reduced. decline in magnitude. Contents of the invention [0003] The purpose of the present invention is to provide a gradient silicone heat-resistant coating, which passes through the cross-linking reaction of the epoxy group of the modified silicone res...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D7/12C08G77/38
Inventor 张海信姚江柳赵绍芬
Owner 西安经建油漆有限责任公司
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