Microencapsulated curing agent, and water-based inorganic zinc-rich anticorrosive coating based on microencapsulated curing agent

A technology of microencapsulation and anti-corrosion coating, applied in anti-corrosion coatings, alkali metal silicate coatings, coatings, etc., can solve problems such as poor water resistance

Pending Publication Date: 2021-07-06
国科先材(合肥)科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the above-mentioned prior art, the present invention provides a microencapsulated curing agent and a water-based inorgani...

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
  • Microencapsulated curing agent, and water-based inorganic zinc-rich anticorrosive coating based on microencapsulated curing agent
  • Microencapsulated curing agent, and water-based inorganic zinc-rich anticorrosive coating based on microencapsulated curing agent
  • Microencapsulated curing agent, and water-based inorganic zinc-rich anticorrosive coating based on microencapsulated curing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Present embodiment first prepares microencapsulated curing agent as follows:

[0040] Step 1. Add 5 g of sodium fluoroborate into 300 mL of absolute ethanol to prepare a curing agent slurry with a mass concentration of 2%.

[0041] Step 2. Raise the temperature of the curing agent slurry to 45°C, and then keep the temperature constant.

[0042] Step 3. Add 15 mL of deionized water and 0.2 g of CTAB to the curing agent slurry while stirring.

[0043] Step 4. Add 3mL of ammonia water with a mass concentration of 15% to the curing agent slurry while stirring, then slowly add 2g of tetraethyl orthosilicate (TEOS) dropwise. Ethyl ester is hydrolyzed and polycondensed under the catalysis of ammonia water; the reacted suspension is centrifuged, washed with absolute ethanol, and dried to obtain a microencapsulated curing agent, wherein the mass of the silica shell accounts for 11.5% of the mass of the curing agent.

[0044] Sodium fluoroborate (SFB) used in this embodiment an...

Embodiment 2

[0053] Present embodiment first prepares microencapsulated curing agent as follows:

[0054] Step 1. Add 10 g of sodium fluorosilicate into 400 mL of absolute ethanol to prepare a curing agent slurry with a mass concentration of 3%.

[0055] Step 2. Raise the temperature of the curing agent slurry to 50°C, and then keep the temperature constant.

[0056] Step 3. Add 10 mL of deionized water and 0.3 g of CTAB to the curing agent slurry while stirring.

[0057] Step 4. Add 2 mL of ammonia water with a mass concentration of 28% to the curing agent slurry while stirring, and then dropwise add 3 g of tetraethyl orthosilicate (TEOS). Hydrolysis and polycondensation under the catalysis of ammonia water; centrifuging the reacted suspension, washing with absolute ethanol, and drying to obtain a microencapsulated curing agent, wherein the mass of the silica shell accounts for 8.7% of the mass of the curing agent.

[0058] Sodium fluorosilicate (SFS) used in this embodiment and the mic...

Embodiment 3

[0067] In this embodiment, the microencapsulated curing agent and the water-based inorganic zinc-rich anticorrosion coating are prepared in the same manner as in Example 1, the difference is only that the amount of tetraethyl orthosilicate (TEOS) is changed to 0.1g, and the silica shell layer The mass accounts for 0.6% of the curing agent mass. After a period of mixing and stirring of the prepared coating, more agglomerated large particle solids will be produced, indicating that the amount of silica shell coating is less, resulting in faster release of the curing agent, and the coating will fail due to agglomeration.

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

No PUM Login to view more

Abstract

The invention discloses a microencapsulated curing agent, and a water-based inorganic zinc-rich anticorrosive coating based on the microencapsulated curing agent. The microencapsulated curing agent is formed by coating a curing agent in a silicon dioxide shell layer. The water-based inorganic zinc-rich anticorrosive coating added with the microencapsulated curing agent has a relatively high curing rate, so that the obtained coating has relatively good early-stage water resistance.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to a microencapsulated curing agent and a water-based inorganic zinc-rich anti-corrosion coating based on the same. Background technique [0002] The annual economic loss caused by corrosion in the world accounts for about 2% to 4% of the total output value of the national economy, and more than 100 million tons of metals are scrapped due to corrosion. Practice has proved that the application of anti-corrosion coatings is one of the most common and effective anti-corrosion methods. However, most of the anti-corrosion coatings market is solvent-based oil-based coatings, which not only have high VOC emissions, pollute the environment, but are also flammable and explosive. [0003] Water-based inorganic zinc-rich anti-corrosion coating has the following characteristics: the substrate is water-based, odorless, no VOC emissions, safe and reliable to use, the obtained coating is he...

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): C09D7/61C09D1/04C09D5/10
CPCC09D1/04C09D5/106C09D7/61C09D7/70
Inventor 桂宙陈仙辉
Owner 国科先材(合肥)科技有限公司
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