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Super hydrophobic silicon-fluorine polymer/nanometer silica hybridization nanometer material and preparation method thereof

A nano-silica, fluorosilicon polymer technology, applied in antifouling/underwater coatings, biocide-containing paints, coatings, etc., can solve the problems of poor resistance to chemical media, low effect, difficult to achieve, etc., to achieve Stable properties, excellent performance and good repeatability

Inactive Publication Date: 2010-08-18
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the surface energy of the material prepared by the hybridization of the above-mentioned organosilicon and nano silicon dioxide is difficult to achieve ultra-low effect, and the surface energy of the material in the above-mentioned published patent (CN101580570) represented by the water contact angle (°) is 138
In addition, the above-mentioned hybrid materials have defects such as poor resistance to chemical media, just like organosilicon materials.

Method used

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  • Super hydrophobic silicon-fluorine polymer/nanometer silica hybridization nanometer material and preparation method thereof
  • Super hydrophobic silicon-fluorine polymer/nanometer silica hybridization nanometer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Preparation of nano silica modified by silane coupling agent:

[0038] In a dry two-necked flask equipped with a reflux condenser, add 1 part of nano-silica, 200 parts of dry toluene and 1 part of 3-aminopropyltrimethoxysilane in molar ratio sequentially. Connect an argon bag to the other end of the condenser tube, vacuumize and fill with an inert gas to remove the air in the system, and react under reflux at 80°C in an oil bath for 12h. After cooling down, centrifuge, pour off the upper solvent, wash with toluene and acetone ultrasonically in order to remove the adsorbed silane coupling agent, and vacuum-dry at 45°C for 24 hours to obtain nano-silica modified by silane coupling agent.

[0039] 2) Preparation of nano silicon dioxide atom transfer radical surface initiator:

[0040] Add 1 part of silane coupling agent-modified nano-silica and 200 parts of toluene in molar ratio to the two-necked bottle treated by the baking bottle, seal the vacuum and repeat the oper...

Embodiment 2

[0046] 1) Preparation of nano silica modified by silane coupling agent:

[0047] In a dry two-necked flask equipped with a reflux condenser, 1 part of nano-silica, 250 parts of dry toluene and 1.5 parts of 3-aminopropyltrimethoxysilane were sequentially added in molar ratio. A nitrogen bag was connected to the upper end of the condenser tube, vacuum-filled with an inert gas to remove the air in the system, and reflux reaction at 110° C. in an oil bath for 18 hours. Centrifuge after cooling down, pour off the upper solvent, wash with a large amount of toluene and acetone in order to remove the adsorbed silane coupling agent, and vacuum dry at 45°C for 24 hours to obtain nano-silica modified by silane coupling agent.

[0048] 2) Preparation of nano silicon dioxide atom transfer radical surface initiator:

[0049] Add 1 part of nano-silica modified by silane coupling agent and 250 parts of toluene in molar ratio to the baked two-necked bottle, seal the vacuum and repeat the oper...

Embodiment 3

[0053] 1) Except that the reaction temperature is 120° C., the reflux time is 24 h, and the toluene is 300 parts, the others are the same as step 1) in Example 1.

[0054] 2) Except that toluene is 300 parts, triethylamine is 5 parts, 2-bromoisobutyryl bromide is 2.5 parts, reaction temperature is 30° C. and reaction time is 30 h, the others are the same as step 2) in Example 1.

[0055] 3) Except for 30 parts of methacryloxypropyltrimethoxysilane, 300 parts of toluene, 8 hours of reaction time, and 50° C. of drying temperature, the procedure is the same as step 3) in Example 1.

[0056] 4) Except that the monomer is 20 parts, the toluene is 300 parts, and the reaction time is 12 hours, the others are the same as step 4) in Example 1.

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Abstract

The invention relates to a super hydrophobic silicon-fluorine polymer / nanometer silica hybridization nanometer material and a preparation method thereof, relating to a super hydrophobic nanometer material and a preparation method thereof. The invention provides the super hydrophobic silicon-fluorine polymer / nanometer silica hybridization nanometer material with mild reaction condition, definite reaction product structure as well as simple and convenient operation and the preparation method thereof. The preparation method comprises the following steps of: firstly, preparing nanometer silica modified by a silane coupling agent; secondly, preparing a nanometer silica atom transfer radical surface initiator; thirdly, preparing a SiO2-poly-Methacryloxypropyltrimethoxysilane macromolecule initiator; and finally preparing the silicon-fluorine polymer / nanometer silica hybridization nanometer material. The silicon-fluorine polymer / nanometer silica hybridization nanometer material has excellent high temperature resistance, ultraviolet resistance, infrared radiation resistance, oxidative degradation resistance, chemicals resistance and contamination resistance. Polymethyl 2-propenoic acid, 2,2,3,3,4,4,4-heptafluorobutyl ester has very low surface energy and very good hydrophobicity, wherein the surface energy can be as low as 0.5-1.5mN / m, and the hydrophobic angle can be over 150 degrees.

Description

technical field [0001] The present invention relates to a kind of superhydrophobic nanometer material and preparation method thereof, relate in particular to a kind of fluorosilicon polymer / silicon dioxide (SiO 2 ) hybrid nanometer superhydrophobic material and preparation method thereof. Background technique [0002] In recent years, surfaces with water contact angles above 150° (ie, superhydrophobic surfaces) have attracted widespread attention due to their potential applications in people's daily life and production. The interface between the solid surface and water is limited, and the superhydrophobic surface is less likely to react with water. This kind of superhydrophobic material has increasingly prominent application prospects in industrial and agricultural production and people's daily life. For example, superhydrophobic surface is used on glass, ceramics and other materials, which can make the material self-cleaning or easy to clean; On outdoor signs, it can prev...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F292/00C09D153/00C09D5/16
Inventor 罗正鸿于海江周寅宁
Owner XIAMEN UNIV
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