Modified silica sol inorganic coating as well as preparation method and use method thereof

A technology of inorganic coatings and silica sol, which is applied in the direction of coatings and devices for coating liquid on the surface, etc., can solve problems such as cracking and damage of inorganic coatings, restrictions on the application of inorganic coatings, and failure of basic functions of coatings. Storage properties, inhibition of gelation process, effects of inhibition of expansion

Pending Publication Date: 2022-03-25
LIAONING SILICATE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low toughness of inorganic materials makes inorganic coatings often crack, break, or even peel off during use, which makes the basic functions of coatings invalid and limits the application of inorganic coatings in certain fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The present invention also provides a method of preparing a modified silica sol inorganic coating and a coating comprising the following steps.

[0034] Step 1: Tetraethoxysilane (TEOS) and ethanol were referred to as the above ratios, and mixed uniform, the temperature was 30-60 ° C, and stirring was continued, and the solution A, the reaction temperature, the higher the reaction temperature, the group The higher the reaction activity, the faster the reaction rate, but the temperature is too high, which causes excessive volatilization of ethanol, change the proportion of the formulation, causing the proportion of coating to affect performance.

[0035] Step 2: Water, ethanol, and acetic acid, mix well, mix well, to obtain solution B, spare;

[0036] Step 3: The organosilane, ethanol mixed uniformly mixed modifier, spare;

[0037] Step 4: Take the ceramic powder according to the above ratios, into the solution A, stir, to obtain a mixed solution A;

[0038] Step 5: The solu...

Embodiment 1

[0048]A method of preparing a modified silica sol inorganic coating and coating, in turn, in accordance with the following steps:

[0049] The following raw materials are compared by mass:

[0050] Solution A: tetraethoxysilane (TEOS): 7 parts, ethanol: 5 parts;

[0051] Solution B: Water: 2 parts, ethanol: 2 parts, acetic acid: 0.02;

[0052] Solution C: γ-shrinkion glycerol ether oxylsilane: 1 part, ethanol: 1 part;

[0053] Ceramic powder: alumina: 15 parts;

[0054] Additives: Polyethylene glycol: 0.1 parts, Tween 80: 0.1.

[0055] The raw material of the solution A is proportionally, and uniform, and the solution A temperature is 40 ° C and continuously stir;

[0056] The ceramic powder was referred to, and the ceramic powder was referred to, and in solution A, and continued to stir;

[0057] The raw material of the solution B is tied to the proportion and mix evenly;

[0058] The solution B was added dropwise to the solution A;

[0059] After the dropwise addition, stirring ...

Embodiment 2

[0068] The following raw materials are compared by mass

[0069] Solution A: tetraethoxysilane (TEOS): 6 parts, ethanol: 6 parts;

[0070] Solution B: Water: 2 parts, ethanol: 2 parts, acetic acid: 0.02;

[0071] Solution C: methyltrimethoxysilane: 1 part, ethanol: 1 part;

[0072] Ceramic powder: zirconia: 15 copies;

[0073] Additives: Polyethylene glycol: 0.1 parts, Tween 80: 0.1;

[0074] Preparation Process

[0075] The raw material of the solution A is proportionally known, and mix well, keep the solution a temperature of 30 ° C, and continuously stir

[0076] It is called ceramic powder and put it into solution A, and continues to stir

[0077] The raw material of the solution B is tied to the proportion and mix evenly

[0078] Add solution B to solution A

[0079] After the drop is added, it is still stirred for 5 hours.

[0080] The raw material of the solution C is proportionally known as a mixture and mix evenly

[0081] The solution C was added dropwise to the mixed so...

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Abstract

The invention belongs to the field of coating preparation, and particularly provides a modified silica sol inorganic coating as well as a preparation method and a use method of the coating. Aiming at the defects that an inorganic coating is low in toughness and easy to crack, a layer of amorphous silicon dioxide is prepared on the surface of inorganic ceramic powder through a sol-gel method; the amorphous silicon dioxide can effectively inhibit the expansion of cracks of the ceramic coating among ceramic powder particles, absorb the stress of the ceramic coating and improve the toughness of the inorganic coating. According to the method, the ceramic powder is added in the sol process, the ceramic powder is uniformly dispersed in the sol through a physical method, the amorphous phase wraps the ceramic powder through chemical bonds in the gel process, and the bonding strength of a gel layer and the ceramic powder is high. The sol modifier is added into the sol, the gelation process is inhibited, the sol keeps active, the storage performance of the coating is improved, and in the preparation process of the inorganic coating, the active sol can serve as a binder.

Description

Technical field [0001] The present invention belongs to the field of coating, and is specifically provided with a modified silica sol inorganic coating, and the preparation method of the coating and method of use. Background technique [0002] With the high-speed development of the economy and the demand of society, the technology development of materials science has made a sharp progress in sharp-flying, and many new challenges have been put forward on materials science. Materials development towards high stress, high temperature, high corrosion. Materials are in high stress, high temperature, high corrosion, often failure when not reaching the limit, causing huge economic losses and a lot of personal injury. In order to improve the environmental adaptability of the material, it can be started from the preparation of new materials and materials surface treatment. The research and development of new materials is the most fundamental method of solving material adaptability, but it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/61B05D7/24
CPCC09D1/00C09D7/61B05D7/24
Inventor 许成杨茗皓周岩郭建王伟远乔彦玲王娇
Owner LIAONING SILICATE RES INST
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