Preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment

A layer-by-layer self-assembly and super-hydrophobic paper technology, which is applied in the field of preparation of high-strength super-hydrophobic paper, can solve the problems of cumbersome preparation process, complex and expensive equipment, etc., to overcome the cumbersome preparation process, simple operation and equipment, and good application prospects Effect

Active Publication Date: 2017-12-22
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method and equipment of the invention are simple and easy to obtain, overcome the traditional super-hydrop

Method used

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  • Preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment
  • Preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment

Examples

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Effect test

Embodiment 1

[0020] The preparation method of the high-strength superhydrophobic paper based on layer-by-layer self-assembly and heat-induced treatment, its specific steps are as follows:

[0021] (1) First, put plain paper in a chitosan solution with a concentration of 2g / L (add acid to the chitosan solution to adjust the pH value to 5~5.7) and soak it for 10 minutes. After taking it out, wash it with deionized water for 3 times. Dry at 60°C for 10 minutes;

[0022] (2) Then soak the paper treated in step (1) in the nano-titanium dioxide-ethanol solution grafted with hexadecyltrimethoxysilane for 10 minutes, take it out and wash it with deionized water for 3 times, and then clean it at 60 Drying at ℃ for 10min, wherein the concentration of nano-titanium dioxide-ethanol solution modified by hexadecyltrimethoxysilane grafting is 2g / L; the preparation method of nano-titanium dioxide modified by hexadecyltrimethoxysilane grafting: first Mix anhydrous ethanol and deionized water at a volume r...

Embodiment 2

[0026] The preparation method of the high-strength superhydrophobic paper based on layer-by-layer self-assembly and heat-induced treatment, its specific steps are as follows:

[0027] (1) First, put plain paper in a chitosan solution with a concentration of 2.5g / L (add acid to the chitosan solution to adjust the pH value to 5~5.7) and soak for 15 minutes, take it out and wash it with deionized water for 4 times, Dry at 70°C for 15 minutes;

[0028] (2) Then soak the paper treated in step (1) in the nano-titanium dioxide-ethanol solution grafted with hexadecyltrimethoxysilane for 15 minutes, take it out and wash it with deionized water for 4 times, and at 70 ℃ of drying 15min, wherein the concentration of nano-titanium dioxide-ethanol solution modified by hexadecyltrimethoxysilane grafting is 3g / L; The preparation method of the nano-titanium dioxide modified by hexadecyltrimethoxysilane grafting: first Mix anhydrous ethanol and deionized water at a volume ratio of 95:5 to obta...

Embodiment 3

[0032] The preparation method of the high-strength superhydrophobic paper based on layer-by-layer self-assembly and heat-induced treatment, its specific steps are as follows:

[0033](1) First, put plain paper in a chitosan solution with a concentration of 3g / L (add acid to the chitosan solution to adjust the pH value to 5~5.7) and soak it for 20 minutes. After taking it out, wash it with deionized water for 5 times. Dry at 80°C for 20 minutes;

[0034] (2) Then soak the paper treated in step (1) in the nano-titanium dioxide-ethanol solution grafted with hexadecyltrimethoxysilane for 20 minutes, take it out and wash it with deionized water for 5 times. Drying at ℃ for 20min, wherein the concentration of nano-titanium dioxide-ethanol solution modified by hexadecyltrimethoxysilane grafting is 4g / L; the preparation method of nano-titanium dioxide modified by hexadecyltrimethoxysilane grafting: first Mix anhydrous ethanol and deionized water at a volume ratio of 95:5 to obtain an...

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Abstract

The invention relates to a preparation method of high-strength super-hydrophobic paper on the basis of layer by layer self-assembly and thermal induction treatment, and belongs to the technical field of post-processing of paper. The preparation method includes the steps of: 1) soaking common paper in a chitosan solution being 2-3 g/L in concentration for 10-20 min, moving the paper out, and washing the paper in deionized water for 3-5 times, and drying the paper for 10-20 min at 60-80 DEG C; 2) soaking the processed paper in a hexadecyl trimethoxysilane graft-modified nano TiO2-ethanol solution for 10-20 min, moving the paper out, and washing the paper in deionized water for 3-5 times, and drying the paper for 10-20 min at 60-80 DEG C, wherein the concentration of the hexadecyl trimethoxysilane graft-modified nano TiO2-ethanol solution is 2-4 g/L; 3) repeating the steps 1) and 2) for 20-30 times, and finally processing the treated paper for 20-30 min at 140-160 DEG C to form the high-strength super-hydrophobic paper. The preparation method is simple and employs simple equipment, overcomes the defects that preparation methods of super-hydrophobic paper in the prior art are complex in steps and need complex and expensive equipment. The preparation method is suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of high-strength superhydrophobic paper based on layer-by-layer self-assembly and heat-induced treatment, and belongs to the technical field of paper post-processing. Background technique [0002] At present, the packaging industry mainly uses petroleum-based plastics such as polyethylene (PE) and polypropylene (PP) as packaging materials. The production of these petroleum-based plastics not only consumes a large amount of petroleum resources, but also causes serious "white pollution" when used in large quantities. , endanger the environment. Plant fiber is a renewable biomass resource with abundant reserves, wide sources and low price. It has the characteristics of good biocompatibility, biodegradability and non-toxicity. Paper packaging materials based on it occupy a very important position in the "green packaging" industry. Paper packaging materials are used to replace plastic packaging materials to ho...

Claims

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Application Information

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IPC IPC(8): D21H17/69D21H17/24D21H17/06D21H27/10D21H21/16
CPCD21H17/06D21H17/24D21H17/69D21H17/74D21H21/16D21H27/10
Inventor 李辉
Owner KUNMING UNIV OF SCI & TECH
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