Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of bridged type polysilsesquioxane/boron carbide nano anti-corrosion protective film

A polysilsesquioxane, protective film technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems affecting the anti-corrosion effect of the film layer, poor impact resistance, film shrinkage, etc., to achieve good anti-corrosion protection effect, The effect of good stability and low cost

Inactive Publication Date: 2021-11-19
TAIYUAN UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a bridge type polysilsesquisiloxane for the problems of poor impact resistance and toughness of the epoxy resin and the volatilization of the solvent during the curing process will cause the shrinkage of the film layer and produce micropores, thereby affecting the anti-corrosion effect of the film layer. Preparation method of alkane / boron carbide nano-anticorrosion protective film

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 bridged type polysilsesquioxane/boron carbide nano anti-corrosion protective film
  • Preparation method of bridged type polysilsesquioxane/boron carbide nano anti-corrosion protective film
  • Preparation method of bridged type polysilsesquioxane/boron carbide nano anti-corrosion protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] For small objects without concave holes (the volume is generally below 50cm*50cm*50cm), the dip coating method is generally used.

[0026] (1) First, dissolve 3-(2,3-glycidyloxypropoxy)propyltrimethoxysilane and ethylenediamine in ethanol respectively, seal and stir for 10 minutes until they are evenly mixed; secondly, dissolve the ethanol solution of ethylenediamine Add it to the ethanol solution of 3-(2,3-glycidoxy)propyltrimethoxysilane, and flush the air in the reaction vessel with nitrogen gas, then seal the above-mentioned reactant mixed solution and place it in an oil bath at 60°C Vigorous stirring in the pot for 72 hours yielded a clear precursor solution. Among them: the molar ratio of 3-(2,3-epoxypropoxy)propyltrimethoxysilane to ethylenediamine is 4:1, and the molar concentration of silicon atoms (CSi) in the precursor is 0.2-0.05mol / L;

[0027] (2) Dissolve a certain amount of ammonia water in ethanol, stir evenly, drop the ethanol solution of ammonia water...

Embodiment 2

[0031] For medium-sized objects (the volume is generally below 100cm*100cm*100cm), the brushing method is generally used.

[0032] (1) (2) The steps are the same as in Example 1;

[0033] (3) When coating the film, add nano-boron carbide to the bridged polysilsesquioxane sol, ultrasonically disperse for 30 minutes, and the mass percentage of nano-boron carbide in the mixture is 5%;

[0034] (4) Heating and curing after brushing, first curing at 60°C for 24 hours, and then curing at 100°C for 2 hours, after curing, a dense organic / inorganic hybrid nano-anti-corrosion protective film can be formed.

Embodiment 3

[0036] For large objects (the volume is generally above 100cm*100cm*100cm), the spraying method is generally used:

[0037] (1) (2) The steps are the same as those in Examples 1 and 2;

[0038] (3) When coating the film, add nano-boron carbide to the bridged polysilsesquioxane sol, ultrasonically disperse for 30 minutes, and the mass percentage of nano-boron carbide in the mixture is 0.3%;

[0039] (4) Secondary spraying and secondary curing method: after the first spraying, first cure at room temperature and dry for 12 hours; after the second spraying, heat and cure, first cure at 60°C for 24 hours, and then at 100°C Curing under the same conditions for 2 hours, a dense organic / inorganic hybrid nano-anti-corrosion protective film can be formed after curing.

[0040] Depend on figure 2 It can be seen that the -NH in the EDA molecule 2 at 3360 cm -1 and 3289 cm -1 (N-H symmetric and antisymmetric stretching vibrations) There are two characteristic absorption peaks around...

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 a preparation method of a bridged type polysilsesquioxane / boron carbide nano anti-corrosion protective film, belongs to the technical field of protective films, and can solve the problem that the anti-corrosion effect of a film layer is influenced by film layer shrinkage and micropore generation caused by poor impact resistance and poor toughness of epoxy resin and solvent volatilization in a curing process. The bridged polysilsesquioxane molecule is a basic skeleton of a film layer structure, and a flexible organic carbon chain in the molecule and a silicon-oxygen-silicon inorganic chain are mutually crosslinked to form a compact net structure; and the nano boron carbide particles subjected to surface treatment are connected with a bridged type polysilsesquioxane molecule through chemical bonds, and micropores generated due to film layer shrinkage caused by solvent volatilization in a film layer are filled, so that the organic / inorganic hybrid nano anti-corrosion protective film with a compact structure is formed. According to the shape and the size of a protected object, the outer surface of the protected object can be coated with the film by adopting a dip-coating method, a spraying method, a brushing method and the like.

Description

technical field [0001] The invention belongs to the technical field of protective films, and in particular relates to a preparation method of a bridge-type polysilsesquioxane / boron carbide nano-anticorrosion protective film. Background technique [0002] In recent years, organic-inorganic hybrid nanomaterials have become a hot spot in the field of composite materials research at home and abroad. Epoxy resin is widely used as various protective films because of its good salt spray resistance, heat and humidity resistance, chemical stability, good adhesion and mechanical properties. [0003] Epoxy resin has disadvantages such as poor impact resistance and poor toughness; in addition, solvent volatilization during the curing process of epoxy resin will cause the film to shrink and produce micropores, thereby affecting the anti-corrosion effect of the film. Studies have shown that mixing inorganic nanoparticles into epoxy cured products by mechanical or physical methods to form...

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): C09D183/08C09D5/08C09D7/62
Inventor 张聪崔新敏张兴惠董静
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com