Hydrophobic treatment agent and preparation method and application thereof, and wear-resistant self-cleaning glass and preparation method thereof

A hydrophobic treatment, self-cleaning technology, applied in biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve the problem of unstable hydrophobic performance, poor wear resistance, and insufficient bonding between hydrophobic coatings and glass and other problems, to achieve the effect of stable hydrophobic and oleophobic performance, improved binding ability, and excellent self-cleaning effect.

Inactive Publication Date: 2020-01-24
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method of coating hydrophobic coating on the glass surface still has the defects that the hydrophobic coating is not tightly bonded to the glass, the hydrophobic performance is unstable, and the wear resistance is not good.

Method used

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  • Hydrophobic treatment agent and preparation method and application thereof, and wear-resistant self-cleaning glass and preparation method thereof
  • Hydrophobic treatment agent and preparation method and application thereof, and wear-resistant self-cleaning glass and preparation method thereof
  • Hydrophobic treatment agent and preparation method and application thereof, and wear-resistant self-cleaning glass and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0036] The present invention also provides a preparation method of the hydrophobic treatment agent described in the above technical scheme, comprising the following steps:

[0037] Addition reaction of single-end hydroxyl perfluoropolyether and propyltriethoxysilane isocyanate in the presence of a catalyst to obtain the hydrophobic treatment agent;

[0038] The single-end hydroxyl perfluoropolyether has a structure shown in formula II:

[0039]

[0040] In the present invention, unless otherwise specified, the preparation raw materials are commercially available products well known to those skilled in the art.

[0041] In the present invention, the average molecular mass of the single-terminated hydroxyl perfluoropolyether is preferably 2000-4000.

[0042] In the present invention, the molar ratio of the single-terminated hydroxyl perfluoropolyether to propyltriethoxysilane isocyanate is preferably (0.8-1):1, more preferably (0.85-0.95):1. In the present invention, there ...

Embodiment 1

[0063] Mix 20g of single-terminated hydroxyl perfluoropolyether (molecular weight: 2000) with 2.47g of propyltriethoxysilane isocyanate, add 0.06g of dibutyltin dilaurate, and react at 20°C for 6 hours to obtain a hydrophobic treatment agent.

Embodiment 2～6

[0065] Embodiments 2-6 have the same process steps as Embodiment 1, and the reagents and preparation conditions used are shown in Table 1.

[0066] Table 1 embodiment 2~6 reagent and preparation condition

[0067]

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Abstract

The invention belongs to the technical field of hydrophobic materials, and particularly relates to a hydrophobic treatment agent and a preparation method and application thereof, and wear-resistant self-cleaning glass and a preparation method thereof. The hydrophobic treatment agent provided by the invention has a perfluoropolyether compound containing a triethoxy silane group which can be bondedwith a silicon hydroxyl group, so formation of an organic-inorganic hybrid structure in the application process is facilitated, then the perfluoropolyether compound is anchored to the surface of glass, and the wear resistance of the hydrophobic surface of the glass is greatly improved; meanwhile, the glass surface is endowed with the characteristic of low surface energy, so the glass surface has the characteristics of excellent full lyophobicity and pollution resistance. Test results show that the wear-resistant self-cleaning glass obtained by coating of the hydrophobic treatment agent provided by the invention can be effectively isolated from various organic solvents; and after friction 200,000 times under a pressure of 100 kPa, a contact angle between the surface and water can still be kept at 105 degrees or above, and excellent wear resistance is achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic materials, and in particular relates to a hydrophobic treatment agent and its preparation method and application, wear-resistant self-cleaning glass and its preparation method. Background technique [0002] Glass is widely used in construction, automobile and other fields, but it is very easy to lose the transparency of the glass due to the contamination of dust and organic matter during use, which affects the performance of the glass. Giving the glass a self-cleaning function through technical means can effectively avoid the impact of glass performance degradation caused by glass being easily contaminated with dust and organic matter. [0003] At present, there are two main types of self-cleaning glass: one is super-hydrophilic self-cleaning glass realized by the principle of photodegradation of titanium dioxide. The self-cleaning function of this super-hydrophilic self-cleaning glass is mani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/336C08G65/00C09D171/00C09D171/02C09D5/16C03C17/30
CPCC03C17/009C03C17/30C03C2218/11C03C2218/32C08G65/00C08G65/336C09D5/1662C09D171/00C09D171/02
Inventor 周峰吴杨裴小维
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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