Acylated nanocellulose crystal modified self-cleaning glass and preparation method thereof

A nanocellulose, self-cleaning technology, applied in the field of self-cleaning glass, can solve the problems of high risk factor, a lot of human resources, waste of water resources, etc., and achieve the effects of good biodegradability, high specific surface area, and easy modification.

Inactive Publication Date: 2019-05-03
深圳市辉翰科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the application of glass brings us a broad vision and beauty, it also brings us a lot of problems: (1) a lot of cleaning work requires a lot of human resources, which increases the cost of using glass; (2) tall buildings The high-altitude curtain wall requires high-altitude operations, which has a high risk factor and is likely to cause casualties; (3) a large amount of high-strength detergent is used, and a large amount of water is required for flushing, which not only wastes water resources, but also pollutes the environment.
The glass prepared by this method has good self-cleaning performance and strong bonding force between the coating and the glass substrate, but the wear resistance of the glass coating is not good, and the heat insulation performance is not good

Method used

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  • Acylated nanocellulose crystal modified self-cleaning glass and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of self-cleaning glass modified by acylated nanocellulose crystals, comprising the following steps:

[0029] (1) Place 1 g of microcrystalline cellulose in 50 mL of 50-60% sulfuric acid solution with a mass concentration of 50°C for 1 hour in a water bath, then cool to room temperature, add the reaction product to deionized water and let it stand for stratification, remove For the supernatant, place the residue in 60 mL of 10% sodium hydroxide solution and treat it in a water bath at 40-50°C for 1 hour, then centrifuge it, wash the solid and dry it to obtain nanocellulose crystals;

[0030] (2) Place 1 g of nanocellulose crystals in 50 mL of DMF solution, add 0.065 g of maleic acid and 0.022 g of maleic anhydride, and carry out acylation treatment under the action of 0.005 g of sulfuric acid; obtain acylated nanocellulose crystals;

[0031](3) Titanium isopropoxide is dissolved in absolute ethanol to obtain a titanium isopropoxide solution with a ma...

Embodiment 2

[0035] A method for preparing self-cleaning glass modified by nanocellulose acylate crystals, comprising the following steps:

[0036] (1) Place 1 g of microcrystalline cellulose in 50 mL of 50-60% sulfuric acid solution with a mass concentration of 50 ° C for 3 hours in a water bath, then cool to room temperature, add the reaction product to deionized water and let it stand for stratification, remove For the supernatant, place the residue in 60 mL of 10% sodium hydroxide solution and treat it in a water bath at 40-50°C for 1 hour, then centrifuge it, wash the solid and dry it to obtain nanocellulose crystals;

[0037] (2) Place 1g of nanocellulose crystals in 50mL of DMF solution, add 0.125g of maleic acid and 0.022g of maleic anhydride, and carry out acylation treatment under the action of 0.025g of sulfuric acid; obtain acylated nanocellulose crystals;

[0038] (3) Titanium isopropoxide is dissolved in absolute ethanol to obtain a titanium isopropoxide solution with a mass ...

Embodiment 3

[0042] A method for preparing self-cleaning glass modified by nanocellulose acylate crystals, comprising the following steps:

[0043] (1) Place 1 g of microcrystalline cellulose in 50 mL of 50-60% sulfuric acid solution with a mass concentration of 50 ° C for 2 hours in a water bath, then cool to room temperature, add the reaction product to deionized water and let it stand for stratification, remove For the supernatant, place the residue in 60 mL of 10% sodium hydroxide solution and treat it in a water bath at 40-50°C for 1 hour, then centrifuge it, wash the solid and dry it to obtain nanocellulose crystals;

[0044] (2) Place 1g of nanocellulose crystals in 50mL of DMF solution, add 0.07g of maleic acid and 0.022g of maleic anhydride, and carry out acylation treatment under the action of 0.008g of sulfuric acid; obtain acylated nanocellulose crystals;

[0045] (3) Titanium isopropoxide is dissolved in absolute ethanol to obtain a titanium isopropoxide solution with a mass c...

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Abstract

The invention discloses an acylated nanocellulose crystal modified self-cleaning glass. The surface of the self-cleaning glass is coated with a self-cleaning coating; the self-cleaning coating is prepared by taking polyvinyl alcohol as a film forming substance and adding an acylated nanocellulose crystal for modification; the inside of the self-cleaning coating further comprises titanium dioxide nanoparticles; and the surfaces of the titanium dioxide nanoparticles are modified by adopting an acryamide monomer. The invention further discloses a preparation method of the self-cleaning glass. Theself-cleaning glass is good in heat insulation property, poor in hydrophilcity and good in self-cleaning performance, and a functional coating on the surface of the glass is good in bonding with a glass matrix and favorable in durability.

Description

Technical field: [0001] The invention relates to the field of multifunctional glass preparation, in particular to a self-cleaning glass modified by acylated nano-cellulose crystals. Background technique: [0002] Glass is widely used in important outdoor places such as windows, solar tubes, photovoltaic panels, windshields and greenhouses because of its transparency and aesthetics. In fact, modern life is inseparable from glass products. While the application of glass brings us a broad vision and beauty, it also brings us a lot of problems: (1) a lot of cleaning work requires a lot of human resources, which increases the cost of using glass; (2) tall buildings (3) The use of a large amount of high-strength detergent requires a large amount of water for washing, which not only wastes water resources, but also pollutes the environment with the generated wastewater. Therefore, if the self-cleaning and anti-ultraviolet functions of glass can be combined at the same time to prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/00
Inventor 谢浔
Owner 深圳市辉翰科技发展有限公司
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