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Benzoxazine-type superhydrophobic nano-silica and its preparation method and application

A technology of nano-silica and benzoxazine, which is applied in the treatment of dyed organic silicon compounds, fibrous fillers, coatings, etc., can solve the problem of dispersion (poor compatibility, easy aggregation of nanoparticles, super hydrophobic to achieve excellent super-hydrophobic performance, easy dispersion, and stable anti-icing performance

Active Publication Date: 2018-05-01
SHANDONG LAIWU RUNDA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems such as easy agglomeration of nanoparticles in polymers, poor dispersion (compatibility), and the composite of polymers and nanoparticles is only bonded together by physical action, and the surface is easy to be damaged, resulting in super-hydrophobicity. performance degradation, which affects performance

Method used

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  • Benzoxazine-type superhydrophobic nano-silica and its preparation method and application
  • Benzoxazine-type superhydrophobic nano-silica and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0037] First, add 100ml of chloroform, 9g of phenol, 18g of aminopropyltriethoxysilane, and 5.8g of paraformaldehyde into the round bottom flask. After mixing evenly, heat up to the reflux temperature by microwave radiation (power 300W), and react 4 After 1 hour, the reaction was cooled to room temperature and turned into a light brown solution. The resulting solution was washed with water and dried to obtain an aminopropyltriethoxysilane-type benzoxazine. Add 3 g of the above-prepared benzoxazine to 150 ml of toluene solution, and then add 2 ml of water and 5 g of nano-silicon dioxide (with a particle size of 8 nm). Mix well, under microwave radiation (power 100W), at 20 o Stir for 0.5 hour under the condition of C, filter with suction, wash with water, and dry to obtain 6.8 g of benzoxazine-type superhydrophobic nano-silica.

[0038] 2 g of the prepared benzoxazine-type superhydrophobic nano-silica and 8 g of polymers containing benzoxazine rings were dissolved in ethyl ac...

Embodiment 2

[0040] First, add 150ml of chloroform, 15g of p-trifluoromethylphenol, 16g of aminopropyltrimethoxysilane (CAS No: 13822-56-5), and 5.8g of paraformaldehyde into the round bottom flask. Microwave radiation heating (power 400W) to reflux temperature, react for 6 hours, and cool the reactant to room temperature. The resulting solution was washed with water and dried to obtain a fluorine-containing benzoxazine. Add 1.5 g of the above-prepared fluorine-containing benzoxazine into 100 ml of trifluorotoluene solution, and then add 3 ml of water and 4 g of nano-silicon dioxide (with a particle size of 200 nm). Mix well, under microwave radiation (power 200W), at 50 o Stir for 2 hours under the condition of C, filter with suction, wash with water, and dry to obtain 4.2 g of fluorine-containing benzoxazine-type superhydrophobic nano-silica.

[0041] 1 g of the prepared benzoxazine-type superhydrophobic nano-silica and 9 g of polymers containing benzoxazine rings were dissolved in eth...

Embodiment 3

[0043] First add 120ml of chloroform, 12.9g of p-isopropylphenol, 21g of aminopropyldiisopropylethoxysilane (CAS No: 117559-36-1), 5.8g of paraformaldehyde into the round bottom flask, mix After uniformity, microwave radiation heating (power 400W) to reflux temperature, react for 3 hours, and cool the reactant to room temperature. The resulting solution was washed with water and dried to obtain benzoxazine. Add 2 g of the above-prepared benzoxazine into 50 ml of benzene solution, and then add 3 ml of water and 2 g of nano-silicon dioxide (with a particle size of 300 nm). Mix well, under microwave radiation (power 200W), at 300 o Stir for 1 hour under the condition of C, filter with suction, wash with water, and dry to obtain 3.8 g of benzoxazine-type superhydrophobic nano-silica.

[0044] 3 g of the prepared benzoxazine-type superhydrophobic nano-silica and 7 g of polymers containing benzoxazine rings were dissolved in ethyl acetate to prepare a 30% solution. The prepared s...

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Abstract

The invention relates to benzoxazine type super-hydrophobic nano silicon dioxide as well as a preparation method and application thereof, belonging to the technical field of nano material modification and application. The benzoxazine type super-hydrophobic nano silicon dioxide is prepared by the following step: stirring benzoxazine and a solvent thereof, silicon dioxide nanoparticles and water for 0.5-2 hours at 20-50 DEG C in microwave condition. The water contact angle of a coating prepared from the benzoxazine type super-hydrophobic nano silicon dioxide is larger than 150 degrees, and the roll angle is smaller than 10 degrees while the coating has good anti-icing performance; compared with a metal aluminum surface, the ice adhesion strength on the surface of the anti-icing coating is reduced to 50% or below; at low temperature, the ice cover is reduced to 50% or below; and the water icing delay time on the surface of the anti-icing coating is longer than 30s.

Description

technical field [0001] The invention relates to a benzoxazine-type superhydrophobic nano-silica and a preparation method and application thereof, belonging to the technical field of nano-material modification and application. Background technique [0002] In the fields of aerospace, transportation, electric power communication, etc., icing on the surface of the substrate will bring major hazards and potential safety hazards. As the most ideal anti-icing and deicing method, building an anti-icing coating on the surface has great application value . The anti-icing coatings currently used have many problems and cannot meet the requirements of the society. Therefore, research on efficient and reliable anti-icing coatings has become a major and urgent topic at home and abroad (Li Hui et al., Progress in Chemistry, 2012 24 (11):2087-2096). The application of superhydrophobic coatings in the field of anti-icing is a hot topic in current research. Superhydrophobic anti-icing coati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D187/00C09D7/62C09C1/28C09C3/12
CPCC08K3/36C08K9/06C09C1/28C09C3/12C09D7/62C09D187/005
Inventor 李辉张书香张梦媛马琳咸立杰
Owner SHANDONG LAIWU RUNDA NEW MATERIAL
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