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Super-hydrophobic paper and production method thereof

A super-hydrophobic and water-drop technology, applied in the field of nanotechnology or bionics, can solve the problems of paper loss of air permeability, no self-cleaning property, complicated process, etc., and achieve high commercial application value, stable super-hydrophobic properties, and simple operation process.

Active Publication Date: 2015-02-25
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used method is to coat a layer of waterproof substances such as paraffin or asphalt on the surface of the paper. However, the contact angle between the surface of these papers and water is usually less than 120°, and there is no self-cleaning property.
Recently, it has also been reported to prepare modified paper by dipping paraffin or resin and using low-temperature plasma chemical deposition. However, there are certain problems in the above-mentioned methods. Paper processing brings certain difficulties, the latter is mainly due to the complicated process and high cost

Method used

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  • Super-hydrophobic paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 0.20 g of nano silicon dioxide and add it to 16 g of absolute ethanol, ultrasonicate the resulting suspension for 10 min, then weigh 0.10 g of hexadecyltrimethoxysilane, add it to the above mixture, and ultrasonically for 10 min, A uniform and stable mixture was obtained. Then, the printing paper with text or pictures was soaked in the above mixture for 1 min, then taken out, and dried naturally at room temperature for 12 hours to obtain super-hydrophobic paper. The wettability of the paper surface was tested with a contact angle tester, and the result showed that the water contact angle of the surface was 151.5°. The surface morphology of the paper was observed with a scanning electron microscope, and it was found that a large number of protruding structures imitating lotus leaves were attached to the surface of the paper fibers. See Table 1.

Embodiment 2

[0018] Weigh 0.20 g of nano silicon dioxide and add it to 16 g of absolute ethanol, ultrasonicate the resulting suspension for 10 min, then weigh 0.10 g of hexadecyltrimethoxysilane, add it to the above mixture, and ultrasonically for 10 min, A uniform and stable mixture was obtained. Then, the printing paper with text or pictures was soaked in the above mixture for 1 min, then taken out, and dried naturally at room temperature for 24 hours to obtain super-hydrophobic paper. The wettability of the paper surface was tested with a contact angle tester, and the result showed that the water contact angle of the surface was 151.3°. The surface morphology of the paper was observed with a scanning electron microscope, and it was found that a large number of protruding structures imitating lotus leaves were attached to the surface of the paper fibers. See Table 1.

Embodiment 3

[0020] Weigh 0.10 g of nano silicon dioxide and add it into 16 g of absolute ethanol, ultrasonicate the resulting suspension for 10 min, then weigh 0.05 g of hexadecyltrimethoxysilane, add it to the above mixed solution, and ultrasonically for 10 min, A uniform and stable mixture was obtained. Then, the printing paper with text or pictures was soaked in the above mixture for 1 min, then taken out, and dried naturally at room temperature for 12 hours to obtain super-hydrophobic paper. The wettability of the paper surface was tested with a contact angle tester, and the result showed that the water contact angle of the surface was 153.2°. The surface morphology of the paper was observed with a scanning electron microscope, and it was found that a large number of protruding structures imitating lotus leaves were attached to the surface of the paper fibers. See Table 1.

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Abstract

The invention discloses a super-hydrophobic paper and a production method thereof. The production method comprises the steps as follows: forming a modified nanometer silicon dioxide coating with the particle size of 50-100 nm on the surface of general paper with texts or pictures, wherein the water contact angle on the surface of the paper is more than 150 DEG and the rolling angle of a water drop on the surface of the paper is less than 10 DEG. The texts and the pictures on the surface of the super-hydrophobic paper are clear, so that the super-hydrophobic paper has a wide application prospect in the fields of self cleaning, water and moisture prevention, book magazine and the like. The production method is simple in process, low in cost, environment-friendly and easy for industrialization, and does not need complex chemical treatment and expensive instrument equipment.

Description

technical field [0001] The invention relates to a super-hydrophobic paper and a preparation method thereof, belonging to the field of nanotechnology or bionic technology. Background technique [0002] Paper is a common and indispensable substance in daily life. Paper fiber has good hydrophilicity because it contains hydrophilic groups. Modifying the surface of paper, endowing it with super-hydrophobic properties, and forming a bionic lotus leaf effect on the surface of paper can improve the performance of paper, making it hydrophobic and self-cleaning, thereby expanding its application range. The commonly used method is to coat a layer of waterproof substances such as paraffin or asphalt on the surface of the paper. However, the contact angle between the surface of these papers and water is usually less than 120°, and there is no self-cleaning property. Recently, it has also been reported to prepare modified paper by dipping paraffin or resin and using low-temperature plas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/40D21H19/46
Inventor 唐新德南诗情庞来学张晓朱强强
Owner SHANDONG JIAOTONG UNIV
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