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Method for preparing UV (ultraviolet)-curable high-temperature-resistant and corrosion-resistant organic silicon/silica hybrid coating

A technology of silicon dioxide and ultraviolet light, which is applied in coatings, anti-corrosion coatings, etc., to achieve the effect of improving corrosion resistance and comprehensive performance

Inactive Publication Date: 2012-07-18
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional composite materials, the size of the inorganic components dispersed in the polymer matrix is ​​usually above the micron level, and they are only used as fillers or fillers, which can only play a limited role in reinforcing the properties of the material.

Method used

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  • Method for preparing UV (ultraviolet)-curable high-temperature-resistant and corrosion-resistant organic silicon/silica hybrid coating
  • Method for preparing UV (ultraviolet)-curable high-temperature-resistant and corrosion-resistant organic silicon/silica hybrid coating
  • Method for preparing UV (ultraviolet)-curable high-temperature-resistant and corrosion-resistant organic silicon/silica hybrid coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, add absolute ethanol, hydrochloric acid and distilled water dropwise to quantitative ethyl orthosilicate sequentially according to the measured number, react for 5min~85min, and then add quantitative methyltriethoxysilane, diphenyldimethylsilane The mixed solution of oxysilane, γ-methacryloxysilane and free radical photoinitiator, reacted for 25min~3h, heated to 50~80℃, condensed and refluxed for 1h~6h to obtain colorless and transparent UV-curable The organic silicon / silicon dioxide hybrid sol, after cooling to room temperature, seal and stand for later use, apply the sealed and static hybrid sol on the substrate by brush coating, and after the solvent volatilizes, carry out ultraviolet light curing to obtain organic silicon / silicon dioxide hybrid coating, and after UV curing for 60s, a silicone / silicon dioxide hybrid coating was obtained.

[0031] The properties of the coating are as follows: the hardness is 0.8513, the flexibility is 1mm, the ad...

Embodiment 2

[0033] At room temperature, add absolute ethanol, hydrochloric acid and distilled water dropwise to quantitative ethyl orthosilicate sequentially according to the measured number, react for 5min~85min, and then add quantitative methyltriethoxysilane, diphenyldimethylsilane The mixed solution of oxysilane, γ-methacryloxysilane and free radical photoinitiator, reacted for 25min~3h, heated to 50~80℃, condensed and refluxed for 1h~6h to obtain colorless and transparent UV-curable The organic silicon / silicon dioxide hybrid sol, after cooling to room temperature, seal and stand for later use, apply the sealed and static hybrid sol on the substrate by brush coating, and after the solvent volatilizes, carry out ultraviolet light curing to obtain organic silicon / silicon dioxide hybrid coating, and after UV curing for 60s, a silicone / silicon dioxide hybrid coating was obtained.

[0034]The properties of the coating are as follows: the hardness is 0.8961, the flexibility is 1mm, the adh...

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Abstract

The invention discloses a method for preparing an UV (ultraviolet)-curable high-temperature-resistant and corrosion-resistant organic silicon / silica hybrid coating. In the method, tetraethoxysilane is taken as an inorganic phase precursor, methyltriethoxysilane and diphenyldimethoxysilane are taken as organic phase precursors, then the mixed liquor of gamma-methacryloxy silane and a free-radical photo-initiator is added, and an UV-curable organic silicon / silica hybrid sol can be prepared by using a sol-gel method; and after a base material is coated, the base material is cured by ultraviolet light for 30-300s so as to obtain an organic silicon / silica hybrid coating, thereby forming hybrid gel space network structure taking Si-O-Si bonds as a skeleton. The method disclosed by the invention has the following technical effects: the hybrid coating subjected to ultraviolet-light curing forms a denser network structure, thereby facilitating the improvement of comprehensive properties, and especially facilitating the improvement of corrosion resistance; and the denser network structure can form a physical 'barrier' better so as to prevent corrosive substances such as water and chemical reagents and the like from contacting a substrate.

Description

Technical field [0001] The present invention involves a preparation method of a silicon / silicon hybridization coating, especially the preparation method of high temperature resistance and corrosion -resistant silicon -resistant coating of ultraviolet light. Background technique [0002] The rapid development of modern science and technology puts forward higher requirements for the performance of materials. The single -nature of materials can no longer meet the needs of development. Compoundization has become the mainstream trend of modern materials development. [0003] Organic -inorganic hybrid material is a composite material with excellent performance. It is organically combined with organic or chemical methods to form an organic inorganic network in the inorganic network;Chemical bonds (covalent or fixing keys), hydrogen bonds, or Van Dewali are combined at the nano level, and the separation size is not greater than nano -level. [0004] The structure and performance of organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D7/12C09D5/08C08G77/20
Inventor 刘光明杨晓东于斐林继月
Owner NANCHANG HANGKONG UNIVERSITY
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