Preparation method and application of high-superhydrophobicity organosilane polymer coating

A polymer coating and organosilane technology, which is applied in coatings, antifouling/underwater coatings, paints containing biocides, etc., can solve the problems of complex chemical substances, expensive, long preparation cycle, etc., and achieve the preparation method Simple, low surface tension, stable properties

Inactive Publication Date: 2018-04-17
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of nanomaterials technology has enabled many methods and types of preparation of special wettability surfaces, but the existing preparation methods rely too much on sophisticated experimental equipment and complex chemical substances
Secondly, the low surface energy substances modified on the rough surface are generally compounds containing fluorine or silane, which are expensive and some special preparation methods involve expensive equipment such as chemical vapor deposition, laser etching, or rely on the selection of special substrates, etc.
At the same time, the long preparation cycle is also a problem currently faced. For example, some etching methods need to be soaked in the corrosive solution for several days to obtain a rough surface with excellent performance, and it is difficult to effectively prepare a large-area special wettability surface.

Method used

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  • Preparation method and application of high-superhydrophobicity organosilane polymer coating
  • Preparation method and application of high-superhydrophobicity organosilane polymer coating
  • Preparation method and application of high-superhydrophobicity organosilane polymer coating

Examples

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Effect test

Embodiment 1

[0021] a. Preparation of organosilane polymer coating with high superhydrophobicity

[0022] Two organosilanes, TEOS and HDTMS, were dissolved in EtOH and NH 3 -EtOH mixed solvent, stirred for 0.5 hour to make the mixture uniform. After the reaction at 80°C, filter with suction and dry to obtain the organosilane polymer; then add 40 mg of the organosilane polymer into 10 mL of anhydrous EtOH, and ultrasonically dissolve for 10 minutes, so that the organosilane polymer is uniformly dispersed in anhydrous EtOH Among them, the organosilane polymer coating with higher superhydrophobicity was obtained.

[0023] b. Preparation of superhydrophobic coating materials

[0024] Felt was used as the coating base material, and 40 mg of organosilane polymer was added into 10 mL of anhydrous EtOH, and ultrasonically dissolved for 10 minutes, so that the organosilane polymer was uniformly dispersed in anhydrous EtOH. When the curing temperature was 80 °C, the obtained Highly superhydrophob...

Embodiment 2

[0026] a. Preparation of organosilane polymer coating with high superhydrophobicity

[0027] Two organosilanes, TEOS and HDTMS, were dissolved in EtOH and NH 3 -EtOH mixed solvent, stirred for 0.5 hour to make the mixture uniform. After the reaction at 80°C, filter with suction and dry to obtain the organosilane polymer; then add 40 mg of the organosilane polymer into 10 mL of anhydrous EtOH, and ultrasonically dissolve for 10 minutes, so that the organosilane polymer is uniformly dispersed in anhydrous EtOH Among them, the organosilane polymer coating with higher superhydrophobicity was obtained.

[0028] b. Preparation of hydrophobic coating material

[0029] Felt was used as the coating base material, and 40 mg of organosilane polymer was added into 10 mL of anhydrous EtOH, and ultrasonically dissolved for 10 minutes, so that the organosilane polymer was uniformly dispersed in anhydrous EtOH. When the curing temperature was 20 °C, a hydrophobic organosilane polymer coati...

Embodiment 3

[0031] a. Preparation of organosilane polymer coating with higher superhydrophobicity:

[0032] Two organosilanes, TEOS and HDTMS, were dissolved in EtOH and NH 3 -EtOH mixed solvent, stirred for 0.5 hour to make the mixture uniform. After the reaction at 80°C, filter with suction and dry to obtain the organosilane polymer; then add 40 mg of the organosilane polymer into 10 mL of anhydrous EtOH, and ultrasonically dissolve for 10 minutes, so that the organosilane polymer is uniformly dispersed in anhydrous EtOH Among them, the organosilane polymer coating with higher superhydrophobicity was obtained.

[0033] b. Preparation of hydrophobic coating material:

[0034]Felt was used as the coating base material, and 40 mg of organosilane polymer was added into 10 mL of anhydrous EtOH, and ultrasonically dissolved for 10 minutes, so that the organosilane polymer was uniformly dispersed in anhydrous EtOH. When the curing temperature was 40 °C, a hydrophobic organosilane polymer co...

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Abstract

The invention provides a preparation method and application of high-superhydrophobicity organosilane polymer coating and belongs to the field of special wettable coating materials. Two organosilanes,TEOS (tetraethoxysilane) and HDTMS (hexadecyltrimethoxysilane), are dissolved in a mixed solvent of EtOH (ethanol) and NH3-EtOH (amino-ethanol), and hydrolysis and condensation are carried out to obtain the coating. The coating has the advantages that, for instance, the preparation method is simple, properties are stable, and hydrophobicity is good. Since organosilane polymers in the coating haveunique structure, the coating has properties of both inorganic materials and organic materials, has the excellent features such as low surface tension, tolerance to high and low temperatures and goodweatherability, and is widely applicable to the aerospace industry, the electronics and electrical industry, the textile industry and other industries.

Description

technical field [0001] The invention belongs to the technical field of coating materials, and relates to a preparation method and application of an organic silane polymer coating with relatively high superhydrophobicity. Background technique [0002] A superhydrophobic surface refers to a surface with a water contact angle greater than 150º and a rolling angle below 10º. It was not until 1997, when Barthlott and Neinhuis explained the origin and conceptual issues of the lotus leaf effect in nature, that superhydrophobic surfaces attracted people's continuous attention. Superhydrophobic surfaces have shown excellent performance in the fields of clothing finishing, electronic component protection, oil absorption and oil-water separation, and have become a hot spot in the field of surface and interface research. [0003] There are two strategies for constructing superhydrophobic surfaces: one is to modify low surface energy substances on a surface with a certain roughness; the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D5/16C08G77/06C08G77/18D06N3/00D06N3/12
CPCC09D183/04C08G77/06C08G77/18C09D5/1675D06N3/0011D06N3/128D06N2205/026D06N2209/142
Inventor 吴磊张想泰司杨廉丽琴曹兴茹
Owner QINGHAI UNIVERSITY
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