Preparation method of self-cleaning anticorrosion sol for metal substrate

A metal substrate, self-cleaning technology, used in anti-corrosion coatings, biocide-containing paints, anti-fouling/underwater coatings, etc., can solve the problems of affecting the appearance of the coating, easy accumulation of dust, etc. Effect

Active Publication Date: 2017-04-19
ZHEJIANG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, when the coated metal sheet is used in an outdoor environment, the surface of the coating is easy to accumulate dirt such as dust and organic emissions, which will affect the appearance of the coating.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of self-cleaning anticorrosion sol for metal substrate
  • Preparation method of self-cleaning anticorrosion sol for metal substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention is further described by examples below.

[0017] The self-cleaning anticorrosion sol preparation method that is used for metal base material among the present invention, comprises following several steps:

[0018] (1) Under the stirring condition of 300r / min, add one or two mixtures of methyl orthosilicate and ethyl orthosilicate to the saturated alcohol solvent of 1 to 5 times the mass of ammonia gas, and then Add water, and make the molar ratio of water and silicon element 6-10:1; after reacting at 60°C for 8 hours, remove 30% of the mass of the added alcohol solvent by rotary evaporation, and obtain particle-type nano-dioxide with high solid content. Silica sol;

[0019] (2) At a stirring rate of 800r / min, add Al(OH) to the particle-type nano-silica sol 3 Sol, keeping the molar ratio of Si:Al at 5-1:1; after aging at 50°C for 24 hours, Al(OH) 3 Composite silica sol coated with sol situ modification;

[0020] (3) at a stirring speed of 500r / m...

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
particle sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to the preparation technology of a sol, and aims at providing a preparation method of a self-cleaning anticorrosion sol for a metal substrate. The method comprises the following steps: feeding tetramethyl orthosilicate or tetraethoxysilane into a saturated alcohol solvent of ammonia gas under an agitating condition; then feeding water to react; performing rotary evaporation to remove some alcohol solvent to obtain high-solid-content particular colloidal silica sol; further feeding Al(OH)3 sol; ageing; further feeding nanometer titanium dioxide powder and glass beads; agitating; filtering the sol; further feeding a catalyst for regulating the pH; dropwise adding organo-siloxane to react to obtain the self-cleaning anticorrosion sol. According to the method, anatase titanium dioxide powder is introduced on the basis of Al(OH3) sol in-situ coated and modified coated silica sol and is grinded and uniformly dispersed into the Al(OH3) sol in-situ coated and modified coated silica sol, and therefore, the anatase titanium dioxide powder can be uniformly dispersed in the prepared coating to effectively improve the self-cleaning performance of the coating on the substrate while the corrosion resistance is ensured.

Description

technical field [0001] The invention relates to a sol preparation technology, in particular to a method for preparing a self-cleaning anticorrosion sol used for metal substrates. Background technique [0002] Inorganic ceramic coating is a new type of organic-inorganic composite coating. The organic-inorganic nano-composite coating (inorganic ceramic film) based on sol-gel technology introduces organic groups so that the coating not only has the flexibility and Inorganic coatings have corrosion resistance properties and are easy to construct. A coating with high hardness, corrosion resistance, wear resistance, heat resistance, non-combustibility, low pollution, and ceramic texture can be obtained by curing at low temperature (100-250 ° C), and becomes a metal coating. An environmentally friendly and clean substitute in the field of coating anti-corrosion, it can be widely used in the field of atmospheric anti-corrosion of aluminum, iron and other metals or alloys as a pretre...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/16C09D5/08C09D7/12
Inventor 吴春春汪海风杨辉申乾宏阙永生
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap