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A kind of natural non-toxic high-transparency waterproof fog coating and preparation method thereof

A transparent and coating technology, applied in coatings, chemical instruments and methods, pectin coatings, etc., can solve problems such as human health or environmental hazards, complex chemical reaction processes, complex technical processes, etc., and achieve a simple and easy preparation method. , broad application prospects, the effect of short preparation cycle

Active Publication Date: 2021-02-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the currently reported methods
First of all, most of the reported materials are synthetic materials, which require complex chemical reaction processes or special equipment, and most of the materials used are harmful to human health or the environment
Secondly, the reported preparation methods often require complex technical processes, or require a long preparation period

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 1 g of pectin raw material into 99 g of deionized water, and stir until uniform and transparent at room temperature to obtain a pectin solution with a concentration of 1 wt%.

[0027] (2) Add 1 g of tannic acid raw material into 99 g of deionized water, and stir until uniform and transparent at room temperature to obtain a tannic acid solution with a concentration of 1 wt%.

[0028] (3) Add 1 g of the tannic acid solution prepared in step (2) dropwise to 99 g of the pectin solution prepared in step (1), and stir until uniform and transparent at room temperature.

[0029] (4) Immerse the polyethylene terephthalate film in the mixed solution of pectin and tannic acid prepared in step (3) for 1 min, and then slowly lift it up vertically.

[0030] (5) Slowly evaporate and remove water at normal temperature to obtain the composite coating of pectin and tannic acid.

[0031] Anti-fog performance test: after the blank sample is placed on the surface of boiling water f...

Embodiment 2

[0033] (1) Add 5 g of pectin raw material into 95 g of deionized water, and stir until uniform and transparent at room temperature to obtain a pectin solution with a concentration of 5 wt%.

[0034] (2) Add 5 g of tannic acid raw material into 95 g of deionized water, and stir until uniform and transparent at room temperature to obtain a tannic acid solution with a concentration of 5 wt%.

[0035] (3) Add 4 g of the pectin solution prepared in step (1) dropwise to 40 g of the tannic acid solution prepared in step (2), and stir until uniform and transparent at room temperature.

[0036] (4) Immerse the polyethylene terephthalate film in the mixed solution of pectin and tannic acid prepared in step (3) for 10 min, and then slowly lift it up vertically.

[0037] (5) Slowly evaporate and remove water at 60° C. to obtain the composite coating of pectin and tannic acid.

[0038] Anti-fog performance test: after the blank sample is placed on the surface of boiling water for about 5c...

Embodiment 3

[0040] (1) Add 2 g of pectin raw material into 98 g of deionized water, and stir until uniform and transparent at room temperature to obtain a pectin solution with a concentration of 2 wt%.

[0041] (2) Add 2 g of tannic acid raw material into 98 g of deionized water, and stir until uniform and transparent at room temperature to obtain a tannic acid solution with a concentration of 2 wt%.

[0042] (3) Add 50 g of the pectin solution prepared in step (1) dropwise to 50 g of the tannic acid solution prepared in step (2), and stir until uniform and transparent at room temperature.

[0043] (4) Immerse the polyethylene terephthalate film in the mixed solution of pectin and tannic acid prepared in step (3) for 5 minutes, and then slowly lift it up vertically.

[0044] (5) Slowly evaporate and remove water at 80° C. to obtain the composite coating of pectin and tannic acid.

[0045] Anti-fog performance test: after the blank sample is placed on the surface of boiling water for abou...

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Abstract

The invention discloses a natural non-toxic highly transparent waterproof fog coating and a preparation method thereof. Pectin and tannic acid are compounded at the molecular level in the coating, and the mass fraction of tannic acid in the coating is 0.01-99.99% by weight; the preparation method is as follows: preparing pectin solution; preparing tannic acid solution; preparing a mixed solution of pectin and tannic acid; coating the mixed solution of pectin and tannic acid on the surface of a substrate; drying to obtain the natural non-toxic highly transparent waterproof fog coating. The raw materials used in the present invention are natural and non-toxic, the preparation method is simple and easy, and the obtained coating has high transparency and excellent water-proof and fog-proof performance, and has broad application prospects in the fields of automobile windshields, spectacle lenses, camera lenses and plastic packaging, etc. .

Description

technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to a natural non-toxic highly transparent anti-fog coating and a preparation method thereof. Background technique [0002] In production and life, water mist on surfaces such as car windshields, spectacle lenses, camera lenses and plastic packaging has brought us a lot of inconvenience and even potential danger. To solve such problems, researchers have developed a variety of methods. Among them, constructing hydrophilic or even superhydrophilic coatings is an effective method. However, there are still some problems in the currently reported methods. First of all, most of the reported materials are synthetic materials, which require complex chemical reaction processes or special equipment, and most of the materials used are harmful to human health or the environment. Secondly, the reported preparation methods often require complex technical processes, or require a long...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D105/06C09D7/63C08J7/054C09K3/18C08L67/02
CPCC09D105/06C09D7/63C09K3/18C08J2367/02C08J2405/06C08L2201/10C08J7/0427C08K5/1545
Inventor 林楠张涛方兰兰王家俊吴韬
Owner ZHEJIANG SCI-TECH UNIV
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