Fluorine-containing titanium sol, inorganic silicate coating and preparation method thereof

A technology of inorganic silicate and titanium sol, applied in alkali metal silicate coatings, anti-corrosion coatings, anti-fouling/underwater coatings, etc. Self-cleaning effect and other problems, to achieve the effects of excellent hydrophobic performance, excellent photocatalytic performance, and excellent weather resistance

Active Publication Date: 2018-05-29
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a single photocatalysis cannot exert a sufficient self-cleaning effect, and the ability to clean po

Method used

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  • Fluorine-containing titanium sol, inorganic silicate coating and preparation method thereof
  • Fluorine-containing titanium sol, inorganic silicate coating and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0029] Example 1:

[0030] (1) Preparation of fluorine-containing titanium sol

[0031] Add 10 parts by weight of tetrabutyl titanate and 80 parts by weight of absolute ethanol into a three-necked flask, heat to 60°C, then add 0.5 parts by weight of hydrochloric acid (mass fraction 37%), react at 60°C for 10h, and then continue to add 5 parts by weight of trifluoropropyltrimethoxysilane and 5 parts by weight of dodecafluoroheptylpropyltrimethoxysilane were reacted at 60° C. for 4 hours to obtain a fluorine-containing titanium sol.

[0032] (2) Preparation of inorganic silicate coating

[0033] Add 10 parts by weight of the above-mentioned fluorine-containing titanium sol, 10 parts by weight of silica sol and 0.5 parts by weight of methyl orthosilicate to 10 parts by weight of water. After stirring evenly, add 30 parts by weight of potassium silicate solution with a modulus of 2.0 , 50 parts by weight of sodium silicate solution with a modulus of 2.0, 20 parts by weight of so...

Example Embodiment

[0035] Example 2:

[0036] (1) Preparation of fluorine-containing titanium sol

[0037] Add 5 parts by weight of tetraethyl titanate, 5 parts by weight of isopropyl titanate and 50 parts by weight of absolute ethanol into a three-necked flask, heat to 35°C, then add 1 weight part of acetic acid, react at 35°C for 20h, and then Continue to add 10 parts by weight of hexafluorobutylpropyltrimethoxysilane and react at 35° C. for 10 h to obtain a fluorine-containing titanium sol.

[0038] (2) Preparation of inorganic silicate coating

[0039]Add 20 parts by weight of the above-mentioned fluorine-containing titanium sol, 20 parts by weight of silica sol and 1 part by weight of methyltriethoxysilane to 40 parts by weight of water, and after stirring evenly, add 30 parts by weight of silicic acid with a modulus of 1.0 Sodium solution, 10 parts by weight of potassium silicate solution with a modulus of 2.0, 60 parts by weight of sodium silicate solution with a modulus of 4.0, 10 part...

Example Embodiment

[0041] Example 3:

[0042] (1) Preparation of fluorine-containing titanium sol

[0043] Add 40 parts by weight of isopropyl titanate and 70 parts by weight of absolute ethanol in a three-necked flask, heat to 45°C, then add 2 parts by weight of acetic acid and 1 part by weight of hydrochloric acid (37% by mass), and react at 45°C 15 hours, and then continue to add 15 parts by weight of heptadecafluorodecyltriethoxysilane, and react at 45° C. for 8 hours to obtain a fluorine-containing titanium sol.

[0044] (2) Preparation of inorganic silicate coating

[0045] Add 15 parts by weight of the above-mentioned fluorine-containing titanium sol, 40 parts by weight of silica sol and 1 part by weight of dimethyldiethoxysilane to 70 parts by weight of water, and after stirring evenly, add 100 parts by weight of silicon with a modulus of 3.0 Potassium acid potassium solution, 5 parts by weight of iron oxide black, 15 parts by weight of iron oxide red, 10 parts by weight of carbon blac...

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Abstract

The invention belongs to the field of coatings and discloses fluorine-containing titanium sol, an inorganic silicate coating and a preparation method thereof. The fluorine-containing titanium sol hasa structure shown in the formula I, wherein Rf represents a fluorine-containing alkyl group with a C1-8 carbon atom chain and -O represents a -Si-O or -Ti-O repeating structural unit. The inorganic silicate coating comprises, by weight, 100 parts of an inorganic silicate solution, 2 to 30 parts of fluorine-containing titanium sol, 5 to 50 parts of silica sol, 0.5 to 5 parts of small molecule organosiloxane, 10 to 100 parts of water, 15 to 65 parts of a filler, 5 to 40 parts of a pigment, 0.5 to 3 parts of a defoamer, 0.5 to 3 parts of a dispersant and 0.5 to 3 parts of a wetting agent. The coating can be used through roll-coating, spray-coating and brush-coating technologies, has the surface contact angle of 110-145 degrees, has good water resistance and alkali resistance, prevents alkaliresistance abnormity in 48h, has excellent washability (for preventing bottom exposure after washing by 1200 times) and can be widely used in the field of high anti-fouling and self-cleaning buildingmaterial surface coatings.

Description

technical field [0001] The invention belongs to the field of inorganic silicate coatings, in particular to a fluorine-containing titanium sol, inorganic silicate coatings and a preparation method thereof. Background technique [0002] At present, the surface coatings of building materials are gradually developing in the direction of good decoration, strong stain resistance, good durability, green environmental protection and water-based. Inorganic silicate coatings use inorganic silicate as a film-forming substance, which has the advantages of rich raw material sources, good film-forming properties, high temperature resistance, aging resistance and no pollution, and meets people's requirements for building material surface coatings to have excellent performance. and environmental protection requirements. However, during the use of traditional inorganic silicate coatings, a series of problems such as cracking, powder falling, and even falling off often occur, and due to long...

Claims

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Application Information

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IPC IPC(8): C09D1/04C09D5/16C09D5/08C09D7/62C09D7/61C09D7/65C09C1/36C09C3/12
CPCC09C1/3684C09C3/12C09D1/04C09D5/08C09D5/1618C09D5/1687
Inventor 刘伟区杨麦萍王政芳
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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