Preparation method for nano anti-corrosion additive for water-based anti-corrosion paint for ships

A technology of anti-corrosion coatings and additives, applied in the direction of anti-corrosion coatings, etc., can solve the problems of organic paint films that are difficult to disperse evenly, easy to agglomerate, difficult to obtain reinforcement, etc., achieve fast hydrolysis polymerization, improve dispersion degree, and improve corrosion inhibition performance Effect

Inactive Publication Date: 2015-11-18
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the activity of the powder increases with the decrease of the particle size of the powder, the nano powder is easy to agglomerate when it exists in the form of dry powder, and it is difficult to disperse evenly in the organic paint film, and it is difficult to achieve the ideal reinforcing effect

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 Construction

[0015] The present invention is further described by examples below.

[0016] The preparation method of the nano anticorrosion additive that is used for ship's water-based anticorrosion coating in the present invention, comprises the following steps:

[0017] (1) Under the stirring condition of 200r / min, add concentrated hydrochloric acid to the water to adjust the pH value of the solution between 1 and 2 to obtain an aqueous hydrochloric acid solution;

[0018] (2) SiCl 4 It is mixed with ethyl methyl triethoxy silicate in a molar ratio of 3 to 5:1 to form a siloxane mixture;

[0019] (3) Under the stirring conditions of 0°C and 800r / min, add the silane mixture obtained in step (2) dropwise at a rate of 1 to 3ml / min to the hydrochloric acid aqueous solution obtained in step (1), so that the silicon in the mixture The molar ratio of elements to water is between 1:2~3; after the dropwise addition is completed, keep warm for 6~8 hours;

[0020] (4) under the condition of 50 D...

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 relates to the preparation technique of water-based anti-corrosion additives, and aims to provide a preparation method for a nano anti-corrosion additive for water-based anti-corrosion paint for ships. The preparation method comprises the following steps: mixing SiCl4 and methyl triethoxy ethyl silicate to form a siloxane mixture, dropwise adding the siloxane mixture into a hydrochloric acid water solution, and conducting reduced pressure distillation to obtain concentrated water-based nano silicon dioxide sol; then adding CeNO3, uniformly mixing to obtain the nano anti-corrosion additive. SiCl4 is used as the raw material to prepare the nano silicon dioxide sol; the hydrolytic polymerization speed is high, and silicon dioxide nanophase can be quickly formed; in addition, through the addition of alkoxy silane and methyl trimethoxy silane which contain organic groups and are subjected to hydrolytic polymerization together, the condition that produced high-activity nano silicon dioxide conducts polymerization reaction to form gel is prevented, and the stability of sol is improved. Moreover, through the introduction of nanophase into a corrosion inhibitor, the degree of dispersion of the corrosion inhibitor is improved, and the corrosion inhibition performance of the anti-corrosion additive is improved.

Description

technical field [0001] The invention relates to the preparation technology of water-based anti-corrosion additives, in particular to a preparation method of nano-anti-corrosion additives used for ship water-based anti-corrosion coatings. Background technique [0002] Anti-corrosion coatings for ships, especially anti-corrosion coatings for hulls, have high requirements on the corrosion resistance of coatings. Ordinary organic resin and other anti-corrosion coatings are combined with pretreatment layers and primers, and zinc powder and other anodic protective agents are added at the same time. It has better corrosion resistance performance. However, the organic water-based anti-corrosion coating has strong water absorption and will cause swelling, which will reduce its shielding effect on corrosive media after a certain period of use. Therefore, it needs to be repaired and recoated after a period of use to ensure the normal operation of the ship. [0003] Nanomaterials have ...

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 Applications(China)
IPC IPC(8): C09D5/08
Inventor 吴春春张玲洁杨辉张继阙永生钱骁
Owner ZIGONG INNOVATION CENT OF 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