Self-cured metal anti-corrosion hybrid silica sol, and preparation method and application thereof

A technology of hybrid silica sol and hybrid silica gel, which is applied in the direction of anti-corrosion coatings, fireproof coatings, coatings, etc., can solve the problems of inability to protect the substrate, poor mechanical properties such as hardness and wear resistance, and achieve increased thickness and improved The effect of alkali resistance

Inactive Publication Date: 2019-07-02
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thickness of the pure siloxane coating is small, generally at the nanometer level, or even a monomolecular la

Method used

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  • Self-cured metal anti-corrosion hybrid silica sol, and preparation method and application thereof
  • Self-cured metal anti-corrosion hybrid silica sol, and preparation method and application thereof
  • Self-cured metal anti-corrosion hybrid silica sol, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The preparation and application of a self-curing metal anti-corrosion hybrid silica gel, comprising the following steps:

[0053] Add 90g of polydimethylsiloxane, 90g of 1,2-bis(triethoxysilyl)ethane, 140g of TEOS (tetraethyl orthosilicate) and 150g of absolute ethanol into a three-neck round bottom flask, and stir well . Add 36 g of pure water into the three-necked flask using a constant pressure funnel, then add two drops of concentrated hydrochloric acid, transfer the three-necked flask to a constant temperature water bath at 70°C, and react for 12 hours. (The constant pressure funnel is sealed for use.) Take 34.17g (KH550) from another constant pressure funnel and add it dropwise into the three-necked flask. 1.50 g of deionized water was added dropwise using a sealed constant-pressure funnel, rinsed with 40 g of absolute ethanol, and reacted at 70° C. for 12 h. Then the temperature was kept at 40°C, and methanol and part of ethanol were removed by 15kpa vacuum dis...

Embodiment 2

[0056] The preparation and application of a self-curing metal anti-corrosion hybrid silica gel, comprising the following steps:

[0057] Add 180 g of 1,2-bis(triethoxysilyl)ethane, 140 g of TEOS and 150 g of absolute ethanol into a three-neck round bottom flask, and stir evenly. Add 36 g of pure water into the three-necked flask using a constant pressure funnel, then add two drops of concentrated hydrochloric acid, transfer the three-necked flask to a constant temperature water bath at 70°C, and react for 12 hours. (The constant pressure funnel is sealed for use.) Take 34.17g (KH550) from another constant pressure funnel and add it dropwise into the three-necked flask. 1.50 g of deionized water was added dropwise using a sealed constant-pressure funnel, rinsed with 40 g of absolute ethanol, and reacted at 70° C. for 12 h. Then the temperature was kept at 40°C, and methanol and part of ethanol were removed by 15kpa vacuum distillation for 30min to obtain hybrid silica sol. Th...

Embodiment 3

[0060]The preparation and application of a self-curing metal anti-corrosion hybrid silica gel, comprising the following steps:

[0061] Add 90 g of uncapped polydimethylsiloxane, 90 g of 1,2-bis(triethoxysilyl)ethane, 140 g of TEOS and 150 g of absolute ethanol into a three-neck round bottom flask, and stir evenly. Add 36 g of pure water into the three-necked flask using a constant pressure funnel, then add two drops of concentrated hydrochloric acid, transfer the three-necked flask to a constant temperature water bath at 70°C, and react for 12 hours. (The constant pressure funnel is sealed for use.) Take another 17.08g constant pressure funnel (KH550) and add it dropwise into the three-necked flask. Add 0.75 g of deionized water dropwise using a sealed constant pressure funnel, rinse the constant pressure funnel with 40 g of absolute ethanol, and react at 70° C. for 12 h. Then the temperature was kept at 40°C, and methanol and part of ethanol were removed by 15kpa vacuum dis...

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Abstract

The invention provides a self-cured metal anti-corrosion hybrid silica sol, and a preparation method and application thereof. The hybrid silica sol contains a compound represented as in a formula I, wherein x, y, n and m are all integers, and R<1>, R<2>, R<4> and R<5> are alkyl groups and can be same or different.

Description

technical field [0001] The invention relates to a self-curing metal anti-corrosion hybrid silica sol and its preparation method and application. The hybrid silica sol can be self-cured at room temperature after use, and the formed protective film not only has the high hardness and high hardness of an inorganic coating It has excellent properties such as wear resistance, high weather resistance, heat resistance, etc., and has the advantages of toughness, corrosion resistance, hydrophobicity, and alkali resistance of organic coatings. Background technique [0002] With the development of the times and the advancement of science and technology, metal materials are widely used in machinery manufacturing, pipeline transportation, transportation, national defense technology and other industrial and living fields. During the use of metal, affected by the environment, it is prone to corrosion, which affects its performance and life. Metal corrosion not only brings huge losses to th...

Claims

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Application Information

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IPC IPC(8): C08G77/44C08G77/26C08G77/06C09D183/10C09D183/08C09D5/08
CPCC08G77/06C08G77/26C08G77/44C09D5/08C09D5/18C09D183/08C09D183/10
Inventor 马西飞黄晓胡娟
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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