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Universal preparation method for self-cleaning superhydrophobic paper

A super-hydrophobic, self-cleaning technology, applied in the field of bionic materials, can solve the problems of low surface energy materials such as high price, complex preparation process, and high adhesion, and achieve superior super-hydrophobic properties, simple preparation process, and low adhesion. Effect

Active Publication Date: 2015-04-22
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a universal preparation method for self-cleaning superhydrophobic paper, to overcome the defects of low surface energy materials in the existing methods, which are expensive, complicated preparation process, poor stability and high adhesion

Method used

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  • Universal preparation method for self-cleaning superhydrophobic paper
  • Universal preparation method for self-cleaning superhydrophobic paper
  • Universal preparation method for self-cleaning superhydrophobic paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 0.1 g of ZnO powder with micro / nano hierarchical structure, disperse it in 30 mL of absolute ethanol, stir and sonicate to make it evenly mixed. Soak ordinary experimental filter paper (2cm×2cm) in the above suspension for 5 minutes, take it out and dry it in a blast drying oven at 100°C for 2 minutes, then put it into the suspension again for immersion treatment, and repeat this 8 times; according to the volume concentration Prepare an ethanol solution of stearic acid at a ratio of 5%, stir it at 80°C to dissolve it completely, then place the obtained filter paper in the stearic acid ethanol solution at 100°C for 30 minutes, take it out and dry it at 80°C for 6 hours to obtain self-cleaning Superhydrophobic filter paper products.

Embodiment 2

[0024] Weigh 0.1 g of ZnO powder with micro-nano hierarchical structure, disperse it in 15 mL of absolute ethanol, stir and sonicate to make it evenly mixed. Soak ordinary printing paper (2cm×2cm in size) in the above suspension for 10min, take it out and dry it in an air-blast drying oven at 80°C for 5min, and repeat it 4 times; prepare a toluene solution with a volume concentration of 3% stearic acid, The obtained filter paper was placed in the stearic acid toluene solution at 60°C for 3 hours, then taken out and dried at 80°C for 6 hours, and a self-cleaning superhydrophobic filter paper product was also obtained.

Embodiment 3

[0026] Adopt the same operating steps as in Example 1 to carry out the deposition of micro-nano hierarchical structure ZnO on the paper surface, and in the subsequent low surface energy substance treatment, use n-dodecane solution of stearic acid to replace the stearic acid in Example 1 Ethanol solution, the rest of the operating steps are the same as in Example 1, and can also be obtained from cleaning superhydrophobic filter paper products.

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Abstract

The invention discloses a universal preparation method for self-cleaning superhydrophobic paper, and is characterized in that the universal preparation method comprises the steps: dipping ordinary paper in a zinc oxide ethanol solution having a micro / nano hierarchical structure for 5-10 min, drying for 2-5 min at the temperature of 80-100 DEG C, then again putting into the zinc oxide ethanol solution, carrying out dipping treatment, and repeating the steps for 4-8 times; and carrying out low-surface-energy modification on the product with an ethanol or toluene solution of stearic acid with the concentration of 3-5%, to obtain the superhydrophobic filter paper. The preparation method of the self-cleaning superhydrophobic paper is simple, raw materials are cheap and easily obtained, a contact angle of the surface of the obtained paper with water is greater than 150 degrees and the roll angle is less than 5 degrees, the self-cleaning property is excellent, and industrialization production is easy.

Description

technical field [0001] The invention belongs to the field of bionic materials, and in particular relates to a universal preparation method for self-cleaning superhydrophobic paper. Background technique [0002] The biomimetic superhydrophobic coating on the surface of the lotus leaf (the contact angle is greater than 150° and the rolling angle is less than 10°), due to its unique microstructure and good superhydrophobic performance, it has many applications in snow prevention, pollution prevention, corrosion prevention and friction coefficient reduction. It has broad application prospects in the field of life and production. How to construct multifunctional biomimetic superhydrophobic coatings on the surface of various substrates and study their environmental durability has become one of the key issues in expanding their practical applications. [0003] As a widely used renewable material, paper fibers are easily stained by water because of their hydrophilic functional grou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/06D21H17/05D21H27/08
Inventor 王艳芬程详徐初阳聂容春
Owner ANHUI UNIV OF SCI & TECH
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