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Antibacterial superhydrophobic coating for wrapping paper and preparation method thereof

A technology of super-hydrophobic coating and wrapping paper, applied in wrapping paper, wrapping paper, packaging, etc., can solve the problems of insufficient antibacterial effect and achieve the effect of enhancing antibacterial effect

Active Publication Date: 2021-05-04
中山泰星纸袋制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, physical modification and chemical modification are carried out separately, and the obtained antibacterial effect is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of wrapping paper antibacterial superhydrophobic coating, its preparation method comprises the following steps:

[0022] (1) Prepare clean, dry and flat wrapping paper for use;

[0023] (2) To prepare a coating solution, dissolve titanate, rosin-modified alkyd resin, and hydroxypropyl starch in absolute ethanol, and stir evenly;

[0024] (3) Apply the coating solution prepared in step (2) evenly on the surface of the wrapping paper, and after standing for a period of time, evaporate part of the solvent ethanol, and then spray deionized water on the surface of the wrapping paper coated with the coating solution , in-situ surface hydrolysis, after the hydrolysis reaction is complete, it can be dried.

[0025] In every liter of coating solution, titanate: rosin modified alkyd resin: hydroxypropyl starch = 50g: 50g: 20g.

[0026] The titanate is tetrabutyl titanate.

[0027] In step (3), the standing time is 4 minutes.

[0028] In step (3), the mass ratio of the ...

Embodiment 2

[0030] A kind of wrapping paper antibacterial superhydrophobic coating, its preparation method comprises the following steps:

[0031] (1) Prepare clean, dry and flat wrapping paper for use;

[0032] (2) To prepare a coating solution, dissolve titanate, rosin-modified alkyd resin, and hydroxypropyl starch in absolute ethanol, and stir evenly;

[0033] (3) Apply the coating solution prepared in step (2) evenly on the surface of the wrapping paper, and after standing for a period of time, evaporate part of the solvent ethanol, and then spray deionized water on the surface of the wrapping paper coated with the coating solution , in-situ surface hydrolysis, after the hydrolysis reaction is complete, it can be dried.

[0034] In every liter of coating solution, titanate: rosin modified alkyd resin: hydroxypropyl starch = 20g: 20g: 10g.

[0035] The titanate is tetraisopropyl bis(dioctylphosphiteoxy) titanate.

[0036] In step (3), the standing time is 5 minutes.

[0037] In ste...

Embodiment 3

[0039] A kind of wrapping paper antibacterial superhydrophobic coating, its preparation method comprises the following steps:

[0040] (1) Prepare clean, dry and flat wrapping paper for use;

[0041] (2) To prepare a coating solution, dissolve titanate, rosin-modified alkyd resin, and hydroxypropyl starch in absolute ethanol, and stir evenly;

[0042] (3) Apply the coating solution prepared in step (2) evenly on the surface of the wrapping paper, and after standing for a period of time, evaporate part of the solvent ethanol, and then spray deionized water on the surface of the wrapping paper coated with the coating solution , in-situ surface hydrolysis, after the hydrolysis reaction is complete, it can be dried.

[0043] In every liter of coating solution, titanate: rosin modified alkyd resin: hydroxypropyl starch = 60g: 40g: 20g.

[0044] The titanate is a mixture of tetrabutyl titanate and isopropoxy dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate in a mass ratio...

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PUM

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Abstract

The invention relates to an antibacterial superhydrophobic coating for wrapping paper and a preparation method thereof. Including (1) preparing clean, dry and flat wrapping paper for later use; (2) preparing a coating solution, dissolving titanate, rosin-modified alkyd resin, and hydroxypropyl starch in absolute ethanol, and stirring evenly; ( 3) Coat the coating solution evenly on the surface of the wrapping paper, let it stand for a period of time, evaporate part of the solvent ethanol, and then spray deionized water on the surface of the wrapping paper coated with the coating solution to carry out in-situ hydrolysis of the surface, hydrolysis After the reaction is complete, it can be dried. Through the in-situ hydrolysis of titanate, a nano-papillae structure is obtained on the surface of the coating, and the micron-scale surface roughness of the coating itself makes the coating surface superhydrophobic. In addition, the nano-titanium dioxide particles obtained by in-situ hydrolysis of titanate have antibacterial and photocatalytic effects, and with the superhydrophobic surface, the antibacterial effect of wrapping paper can be enhanced.

Description

technical field [0001] The invention belongs to the field of wrapping paper, in particular to an antibacterial superhydrophobic coating for wrapping paper. Background technique [0002] Packaging plastics are poorly degradable in the natural environment. With the intensification of white pollution caused by packaging plastics, countries around the world are calling for reducing the use of packaging plastics. As a substitute product for packaging plastics, packaging paper has excellent natural degradability, so it has broad application prospects. [0003] For packaging paper, especially food packaging paper, it is usually required to have antibacterial properties to ensure that food is free from bacterial damage during storage and transportation and to ensure food safety. [0004] There are mainly two types of production methods for antibacterial wrapping paper. One is to directly add antibacterial agents to the papermaking process of paper through a certain process to obtai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/10D21H19/28D21H19/14D21H21/16D21H21/36
CPCD21H19/14D21H19/28D21H21/16D21H21/36D21H27/10
Inventor 李向臻
Owner 中山泰星纸袋制品有限公司
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