Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of nano-SiO2 modified inorganic coating for coating valve

An inorganic coating and valve technology, applied in anti-corrosion coatings, devices for coating liquid on surfaces, coatings, etc., can solve the problems of low anti-aging performance, poor bonding ability, insufficient anti-corrosion performance, etc. Improved corrosion resistance and strong adhesion

Inactive Publication Date: 2018-05-29
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current coatings have poor bonding ability with the metal substrate, insufficient anti-corrosion performance, and low anti-aging performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Nano-SiO 2 The modified inorganic coating for valves is made from the following raw materials by weight: 10 parts of ethyl orthosilicate, 15 parts of heptadecafluorodecyltrimethoxysilane, 20 parts of silica sol, 15 parts of nano-alumina, and iron black 15 parts of pigment, 5 parts of organic acid, 10 parts of hydroxy silicone oil.

[0022] Wherein, the silica sol is an aqueous silica sol with a solid content of 50%, and its particle size is 30-50 nm; the particle size of nano-alumina is 30-40 nm; and the organic acid is formic acid.

[0023] The preparation method of this coating comprises the following steps:

[0024] (1) each raw material is weighed by described weight part ratio;

[0025] (2) adding silica sol, nano-alumina and iron black pigment into a ball mill, and milling for 1 h; then adding organic acid and heptadecafluorodecyltrimethoxysilane, and continuing to mill for 12 h;

[0026] (3) Take out the ball-milled mixture, add ethyl orthosilicate and stir fo...

Embodiment 2

[0031] Nano-SiO 2 The modified inorganic coating for valve is made from the following raw materials by weight: 20 parts of ethyl orthosilicate, 10 parts of heptadecafluorodecyltrimethoxysilane, 40 parts of silica sol, 10 parts of nano-alumina, iron 10 parts of black pigment, 3 parts of organic weak acid, 5 parts of hydroxy silicone oil.

[0032] The silica sol is an aqueous silica sol with a solid content of 50%, and its particle size is 50-80 nm; the particle size of nano-alumina is 40-50 nm; and the organic acid is acetic acid.

[0033] The preparation and use methods of the coating are the same as those in Example 1.

Embodiment 3

[0035] Nano-SiO 2 The modified inorganic paint for valve is made from the following raw materials by weight: 15 parts of ethyl orthosilicate, 12 parts of heptadecafluorodecyl trimethoxysilane, 30 parts of silica sol, 12 parts of nano alumina, iron 12 parts of black pigment, 4 parts of organic weak acid, 8 parts of hydroxy silicone oil.

[0036] The silica sol is an aqueous silica sol with a solid content of 50%, and its particle size is 40-60 nm; the particle size of nano-alumina is 35-45 nm; and the organic acid is benzenesulfonic acid.

[0037] The preparation and use methods of the coating are the same as those in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of functional coating preparation and aims at providing a preparation method of a nano-SiO2 modified inorganic coating for coating a valve. The nano-SiO2 modified inorganic coating for coating the valve comprises 10 to 20 parts of tetraethyl orthosilicate, 10 to 15 parts of heptadecafluorodecyl trimethoxysilane, 20 to 40 parts of silica sol, 10 to 15 parts of nano-alumina, 10 to 15 parts of iron black pigment, 3 to 5 parts of organic acid, and 5 to 10 parts of hydroxy silicone oil weighed proportionally in parts by weight; the silica sol, nano-alumina and iron black pigment are added to a ball mill to be subjected to ball milling for 1h; and organic acid and heptadecafluorodecyl trimethoxysilane are added and subjected to ball milling continuously for 12h; a ball-milled mixture is taken out and tetraethyl orthosilicate is added and then stirred for 6 to 8h; then hydroxy silicone oil is added and stirred for 0.5h to obtain a coating product. The coating of the invention has a strong binding force with a metal matrix, can effectively improve the adhesion and leveling of a coating, is not easy to peel off and crack, and improves corrosion resistanceof the coating through adding nano-SiO2 and nano-alumina.

Description

technical field [0001] The invention relates to the field of preparation of functional coatings, in particular to a nano-SiO for coating valves 2 The preparation method of the modified inorganic coating. Background technique [0002] The valve is a control component in the fluid conveying system, with functions such as cut-off, regulation, diversion, pressure stabilization, diversion or overflow pressure relief. Valves are often used in petroleum, chemical, metallurgical and other industrial fields. The materials used in the preparation of valves are often metal materials. The valve is in contact with the medium for a long time, and is corroded and washed by the medium. , the flow resistance increases, which seriously affects the medium transmission and the service life of the valve. Therefore, while the wear resistance of the valve needs to be improved, when it is applied to strong corrosive media such as acid, alkali, and salt, its corrosion resistance also needs to be i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D1/00C09D5/08C09D7/61C09D7/63C09D7/65B05D7/14B05D7/22
CPCC09D1/00B05D7/14B05D7/22C09D5/08
Inventor 吴春春张玲洁杨辉
Owner ZIGONG INNOVATION CENT OF ZHEJIANG UNIV