Wear-resistant super-hydrophobic paper and preparation method thereof

A super-hydrophobic and super-hydrophobic modification technology, applied in the fields of special functional paper and nanotechnology, can solve the problems of poor super-hydrophobic stability, complicated preparation process, no additional properties, etc., achieve good hydrophobic properties, simple preparation method, and improve additional performance effect

Inactive Publication Date: 2019-03-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The preparation process of superhydrophobic paper in the prior art is relatively complicated and the cost is relatively high. Most superhydrophobic papers have poor scratch resistance and poor superhydrophobic stability, and the existing superhydrophobic papers have certain hydrophobic properties. In addition, there are no other additional performance defects

Method used

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  • Wear-resistant super-hydrophobic paper and preparation method thereof
  • Wear-resistant super-hydrophobic paper and preparation method thereof
  • Wear-resistant super-hydrophobic paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A wear-resistant super-hydrophobic paper, prepared according to the following steps:

[0037] (1) First mix 5mL of ammonia water and 65mL of ethanol solution into the Erlenmeyer flask; another 5mL of tetraethyl silicate is dissolved in 25mL of ethanol, so that tetraethyl silicate is fully dispersed in the ethanol solution, and the obtained silicic acid Add the tetraethyl ester solution into the Erlenmeyer flask mentioned above, and continuously magnetically stir it to make it fully react for 12 hours, and the magnetic stirring speed is 300r / min; The supernatant was removed after centrifugation at 8000r / min, and the resulting lower sediment was vacuum-dried for 5 hours to obtain nano-silica particles. figure 1 .

[0038] (2) Take by weighing 5 g of nano-silica prepared in step (1) and mix hydroxylated carbon nanotubes with a quality of 6 mg in 50 mL of toluene, ultrasonically disperse for 30 min, then add vinyltriethoxysilane, and carry out Superhydrophobic modificatio...

Embodiment 2

[0044] A wear-resistant super-hydrophobic paper, prepared according to the following steps:

[0045] (1) First mix 5mL of ammonia water and 65mL of ethanol solution into the Erlenmeyer flask; another 5mL of tetraethyl silicate is dissolved in 25mL of ethanol to fully disperse it in the ethanol solution, and the resulting tetraethyl silicate solution Add it into the Erlenmeyer flask mentioned above, and continuously magnetically stir to make it fully react for 12h, the magnetic stirring speed is 300r / min; after the reaction is completed, the obtained suspension is centrifuged, the centrifugation time is 3h, and the centrifugal speed is 8000r / min , after centrifugation, the supernatant was removed, and the obtained lower sediment was vacuum-dried for 5 hours to obtain nano-silica particles.

[0046] (2) Take by weighing 5 g of nano-silica prepared in step (1) and mix hydroxylated carbon nanotubes with a quality of 10 mg in 50 mL of toluene, ultrasonically disperse for 30 min, th...

Embodiment 3

[0052] A wear-resistant super-hydrophobic paper, prepared according to the following steps:

[0053] (1) First mix 5mL of ammonia water and 65mL of ethanol solution into the Erlenmeyer flask; another 5mL of tetraethyl silicate is dissolved in 25mL of ethanol to fully disperse it in the ethanol solution, and the resulting tetraethyl silicate solution Add it into the Erlenmeyer flask mentioned above, and continuously magnetically stir it to make it fully react for 12 hours, and the magnetic stirring speed is 300r / min; , after centrifugation, the supernatant was removed, and the obtained lower sediment was vacuum-dried for 5 hours to obtain nano-silica particles.

[0054] (2) Take by weighing 5 g of nano silicon dioxide prepared in step (1) and mix it with hydroxylated carbon nanotubes of 20 mg in 50 mL of toluene, ultrasonically disperse for 30 min, then add vinyltriethoxysilane, and carry out superhydrophobic modification.

[0055] (3) AKD is dissolved in the heptane solution...

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Abstract

The invention relates to wear-resistant super-hydrophobic paper and a preparation method thereof. The preparation method comprises the following steps: (1) preparing nano silicon dioxide particles; (2) enabling the nano silicon dioxide particles prepared in the step (1) to be mixed with hydroxylation carbon nano tubes, and performing super-hydrophobic modification; (3) enabling AKD to be dissolvedin ethyl alcohol or heptane solution; (4) enabling the nano silicon dioxide particles prepared in the step (2) after the super-hydrophobic modification to be mixed with a mixture of the hydroxylationcarbon nano tubes and AKD solution prepared in the step (3), and preparing emulsion; (5) enabling the emulsion prepared in the step (4) to be sprayed on paper through modes of spraying, coating or spin-coating; and (6) drying the paper prepared in the step (5). The prepared wear-resistant super-hydrophobic paper still keeps a good hydrophobic property after a friction test in a certain pressure.The provided preparation method for the wear-resistant super-hydrophobic conductive paper is simple, a process is easy to control and production cost is lower.

Description

technical field [0001] The invention relates to wear-resistant superhydrophobic paper and a preparation method thereof, and relates to the fields of nanotechnology and special functional paper. Background technique [0002] Superhydrophobic materials generally refer to materials with a water contact angle greater than 150° and a rolling angle less than 10° on the surface of the material. The superhydrophobic phenomenon is determined by the wettability of the solid surface. The wettability of the solid surface is an important property. It is mainly affected by the two factors of the microstructure and chemical properties of the solid surface. When the contact angle is greater than 150°, the solid surface exhibits superhydrophobicity. In nature, animal and plant organs such as lotus leaves, gecko soles, watermelon leaves, and cicada wings are all superhydrophobic. The superhydrophobic surface has good properties such as anti-freezing, anti-corrosion, drag reduction, and biolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/40D21H19/46D21H19/44D21H21/16D21H25/06C01B33/18
CPCC01B33/18D21H19/40D21H19/44D21H19/46D21H21/16D21H25/06
Inventor 田君飞唐华石聪灿陈广学何明辉吴静
Owner SOUTH CHINA UNIV OF TECH
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