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High temperature resistance anti-ultraviolet hydrophobic coating material and preparation method thereof

A hydrophobic coating and anti-ultraviolet technology, which is applied in the direction of coating, etc., can solve the problems of nano-titanium dioxide that do not take into account the degradation of coatings, and achieve good anti-ultraviolet performance, simple equipment and processes, and a wide range of sources

Inactive Publication Date: 2013-08-28
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the long run, the degradation of the coating itself by nano-titanium dioxide has not been considered.

Method used

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  • High temperature resistance anti-ultraviolet hydrophobic coating material and preparation method thereof
  • High temperature resistance anti-ultraviolet hydrophobic coating material and preparation method thereof
  • High temperature resistance anti-ultraviolet hydrophobic coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 10 parts of nano-titanium dioxide and 0.5 part of BYK180 to 100 parts of absolute ethanol, add 5mm zirconium beads, and disperse at a high speed in a sand mill disperser for 2 hours to obtain a dispersion of nano-titanium dioxide;

[0021] Mix the above dispersion with 100 parts of silicone, add 0.8 parts of curing agent at the same time, and continue to disperse into a uniform coating;

[0022] Coat the silicone / titanium dioxide coating on the glass sheet by spin coating, dry at 70°C for 1 min, cool to room temperature naturally, then spin coat a layer of titanium dioxide dispersion, and then place it in an oven at 70°C for drying.

[0023] The prepared coating has good water-repellent performance. After continuous irradiation under ultraviolet light for 24 hours, and placed in a muffle furnace at 450°C for 3 hours, the surface does not change, and the performance remains unchanged.

Embodiment 2

[0025] Add 15 parts of nano-titanium dioxide and 0.8 parts of BYK180 to 100 parts of absolute ethanol, add 5mm zirconium beads, and disperse at a high speed in a sand mill disperser for 2.5 hours to obtain a dispersion of nano-titanium dioxide;

[0026] Mix the above dispersion with 100 parts of silicone, add 0.8 parts of curing agent at the same time, and continue to disperse into a uniform coating;

[0027] Apply the silicone / titanium dioxide coating on the glass sheet by spin coating, dry at 70°C for 1min, cool to room temperature naturally, then spin coat the titanium dioxide dispersion, repeat the coating of the titanium dioxide dispersion twice, and then place it in an oven at 70°C Dry in medium.

[0028] The prepared coating has good water-repellent performance. After continuous irradiation under ultraviolet light for 24 hours, and placed in a muffle furnace at 450°C for 3 hours, the surface does not change, and the performance remains unchanged.

Embodiment 3

[0030] Add 20 parts of nano-titanium dioxide, 1 part of BYK180 and 1 part of KH550 to 100 parts of absolute ethanol, add 5mm zirconium beads, and disperse at a high speed in a sand mill disperser for 2 hours to obtain a dispersion of nano-titanium dioxide;

[0031] Mix the above dispersion with 100 parts of silicone, add 0.8 parts of curing agent at the same time, and continue to disperse into a uniform coating;

[0032] Coat the silicone / titanium dioxide coating on the glass sheet by spin coating, dry at 70°C for 1 min, cool to room temperature naturally, then spin coat a layer of titanium dioxide dispersion, and then place it in an oven at 70°C for drying.

[0033] The prepared coating has good water-repellent performance. After continuous irradiation under ultraviolet light for 24 hours, and placed in a muffle furnace at 450°C for 3 hours, the surface does not change, and the performance remains unchanged.

[0034] Table 1 UV transmittance and contact angle of the coating ...

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Abstract

The present invention provides a high temperature resistance anti-ultraviolet hydrophobic coating material and a preparation method thereof. The preparation method comprises: preparing a coating material: adding 2-20% by mass of nanometer titanium dioxide and a dispersant to dehydrated alcohol, dispersing to obtain a nanometer titanium dioxide dispersion, and mixing with an organosilicon resin and a curing agent to prepare a coating material; and carrying out spin coating: carrying out spin coating of a layer of an organosilicon / titanium dioxide coating material on a substrate, and carrying out spin coating of a layer of a titanium dioxide dispersion after the surface is dried, wherein the prepared coating has characteristics of good ultraviolet resistance and good hydrophobicity, and can maintain constant performances at a high temperature of 450 DEG C. The method has characteristics of wide raw material source, simple equipment and process, easy operation and low cost, and is suitable for industrial production. The coating material can be used in high temperature, anti-ultraviolet, water resistance and other fields.

Description

technical field [0001] The invention relates to a high-temperature-resistant and ultraviolet-resistant hydrophobic coating and a preparation method thereof, belonging to the field of functional coatings. technical background [0002] The rapid development of modern science and technology has put forward higher requirements on the performance of materials. Materials with a single property can no longer meet the needs of development well, and compounding has become the mainstream trend of modern material development. [0003] Coatings can both protect the base material and decorate. However, coatings, like most polymer materials, will crack under long-term exposure to ultraviolet radiation, causing the coating to age; or exposed to high temperature and humidity for a long time, the polymerization The material is decomposed or corroded, causing the coating to fail and lose its protective effect on the substrate. Adding UV absorbers to coatings can improve their UV resistance....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D7/12
Inventor 曾琦琪赵斌林琳陈超何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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