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Fluorinated organopolysiloxane self-cleaning coating

A technology of polysiloxane and siloxane, which is applied in the direction of non-pigment coating, coating, fiber raw material treatment, etc., can solve the problems of application limitations of fluoropolymer coatings, improve hydrophobic performance, reduce surface energy, good wear resistance

Active Publication Date: 2021-06-22
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the gradual improvement of people's awareness of environmental protection and energy saving, the restrictions on the content of VOC (volatile organic compounds) in various countries have become increasingly strict. Coating application is subject to certain restrictions

Method used

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  • Fluorinated organopolysiloxane self-cleaning coating
  • Fluorinated organopolysiloxane self-cleaning coating
  • Fluorinated organopolysiloxane self-cleaning coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] Stir and mix 1H,1H,2H,2H-perfluorodecyltriethoxysilane 0.05g and PDMOS 1g evenly under magnetic stirring, spray on the substrate to form a film, place in an atmosphere containing 1% ammonia water, 80 °C in a constant temperature and humidity chamber for 48 hours (humidity 80%) to obtain a fluorine-containing organopolysiloxane superhydrophobic coating, the results are shown in Table 1.

Embodiment approach 2

[0021] Mix 0.1 g of 1H, 1H, 2H, 2H-perfluorododecyltriethoxysilane with 1 g of PDMOS under magnetic stirring, and then spray it on the substrate to form a film, and place it in an atmosphere containing 5% ammonia water. React in a constant temperature and humidity chamber at 60°C for 48 hours (humidity is 40%) to obtain a fluorine-containing organopolysiloxane superhydrophobic coating. The results are shown in Table 1.

Embodiment approach 3

[0023] Mix 0.3 g of 1H, 1H, 2H, 2H-perfluoroheptadecanetrimethoxysilane with 1 g of PDMOS under magnetic stirring, stir and mix evenly, after completely dissolving, spray on the substrate to form a film, place in an atmosphere containing 5% ammonia water, React in a constant temperature and humidity chamber at 50°C for 12 hours (humidity is 60%) to obtain a fluorine-containing organopolysiloxane superhydrophobic coating. The results are shown in Table 1.

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Abstract

The invention relates to the field of coatings, and discloses a fluorine-containing organopolysiloxane self-cleaning coating, which comprises 5-50 wt% of a fluorine-containing siloxane precursor and 50-95 wt% of a siloxane prepolymer; its preparation method is as follows : Under normal temperature environment, mix and stir the fluorine-containing siloxane precursor and siloxane prepolymer, after stirring evenly, spray on the substrate to form a film; put it in a constant temperature and humidity environment containing ammonia atmosphere and let it stand for a preset time , to obtain a fluorine-containing organopolysiloxane self-cleaning coating. This self-cleaning coating has the characteristics of strong hydrophobicity, good self-cleaning effect, high wear resistance and wide application range. Compared with the existing preparation technology, the preparation method is more convenient to operate, does not need solvent, and has broad market prospect.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a fluorine-containing organopolysiloxane superhydrophobic self-cleaning paint. Background technique [0002] Superhydrophobic self-cleaning coatings have attracted widespread attention because of their ability to remove dust and dirt on the surface by natural forces such as wind, rain, and gravity. At present, many preparation methods have been developed for superhydrophobic surfaces, such as sol-gel method, solution immersion method, chemical etching method, plasma etching method, electrochemical deposition method, anodic oxidation method, template method, electrospinning method, High temperature thermal oxidation method, etc. However, there are still some problems in the process of research and development and application. For example, a common problem is that the rough structure on the surface of the superhydrophobic self-cleaning coating is easily worn away so that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C08G77/24D21H19/32D21H21/14D06M15/657
CPCC09D183/08C08G77/24D21H19/32D21H21/14D06M15/657D06M2200/12
Inventor 张世忠刘永涛刘永健杨昌佑蔡鹏倪伶俐
Owner HUAIYIN INSTITUTE OF TECHNOLOGY