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Preparation method of super-hydrophobic paper packaging material

A paper packaging material, super-hydrophobic technology, applied in packaging, wrapping paper, wrapping paper, etc., can solve the problems of weak hydrophobicity of sizing agent, difficult to meet waterproof requirements, unstable waterproof performance, etc., and achieve excellent resistance. Effects of chemical and low surface energy, improved hydrophobicity, strong adhesion

Active Publication Date: 2017-05-31
ZHEJIANG GREAT SHENGDA PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rosin glue is often used for sizing, and the waterproof performance of paper is limited. The hydrophobicity of sizing agent is not strong, and uneven coating thickness will cause unstable waterproof performance; coating with varnish can only partially improve waterproof performance. It is difficult to meet the increasing waterproof requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] (1) Preparation of fluorine-modified acrylate resin

[0025] In a reaction kettle equipped with a mechanical stirring device, a thermometer, a constant pressure dropping funnel and a reflux condenser, add 10 parts by weight of solvent butyl acetate and 0.2 parts by weight of initiator azobisisobutyronitrile, at 85 ° C Acrylate mixed monomer (10 parts by weight of dimethylaminopropyl acrylate, 10 parts by weight of methyl methacrylate, 20 parts by weight of butyl acrylate, 10 parts by weight of 2-hydroxyethyl acrylate) and 10 parts by weight of The fluoroacrylate monomer perfluoroalkyl ethyl methacrylate and 0.3 parts by weight of the initiator azobisisobutyronitrile solution are added dropwise into the reactor through a constant pressure dropping funnel, and the dripping is completed within 2 hours, and the heat preservation is continued. The reaction was refluxed for 4 hours. After cooling down, a fluorine-modified acrylate resin is obtained.

[0026] (2) Preparation...

example 2

[0031] (1) Preparation of fluorine-modified acrylate resin

[0032]In a reaction kettle equipped with a mechanical stirring device, a thermometer, a constant pressure dropping funnel and a reflux condenser, add 30 parts by weight of solvent butyl acetate and 1 part by weight of initiator azobisisobutyronitrile, at 100 ° C Acrylate mixed monomer (20 parts by weight of dimethylaminopropyl methacrylate, 20 parts by weight of ethyl methacrylate, 30 parts by weight of isopropyl acrylate, 20 parts by weight of 2-hydroxypropyl methacrylate) and 30 parts by weight of the fluorine-containing acrylate monomer hexafluorobutyl acrylate and 1 part by weight of the initiator azobisisobutyronitrile solution are added dropwise into the reactor through a constant pressure dropping funnel, and the dripping is completed within 4 hours, and the heat preservation is continued. The reaction was refluxed for 2 hours. After cooling down, a fluorine-modified acrylate resin is obtained.

[0033] (2) ...

example 3

[0038] (1) Preparation of fluorine-modified acrylate resin

[0039] In the reaction still equipped with mechanical stirring device, thermometer, constant pressure dropping funnel and reflux condenser, add the solvent butyl acetate of 20 weight parts and 0.5 weight part initiator azobisisobutyronitrile, at 95 ℃ Acrylate mixed monomer (15 parts by weight of dimethylaminoethyl acrylate, 5 parts by weight of styrene, 10 parts by weight of ethyl methacrylate, 30 parts by weight of isopropyl acrylate, 15 parts by weight of 2-hydroxyethyl methacrylate parts) and 20 parts by weight of fluorine-containing acrylate monomer trifluorooctyl methacrylate and 0.5 parts by weight of initiator azobisisobutyronitrile solution were added dropwise to the reactor through a constant pressure dropping funnel for 3 hours After the internal dripping was completed, the insulation and reflux reaction was continued for 3 hours. After cooling down, a fluorine-modified acrylate resin is obtained.

[0040...

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Abstract

The invention discloses a preparation method of a super-hydrophobic paper packaging material. The preparation method comprises the following steps: preparing fluorine-modified acrylate resin from fluorinated acrylate monomers and acrylate mixed monomers including tertiary amide acrylate monomers and common acrylate monomers; adding hydrophobic silica particles to modify the fluorine-modified acrylate resin, so as to prepare a hydrophobic agent; and coating the surface of a paper packaging material with the hydrophobic agent. The super-hydrophobic paper packaging material prepared by virtue of the preparation method has the super-hydrophobic characteristic and excellent waterproof and dirt-proof effects, and water cannot adhere to the surface of the super-hydrophobic paper packaging material.

Description

technical field [0001] The invention relates to a method for preparing a paper packaging material, in particular to a method for preparing a superhydrophobic paper packaging material. Background technique [0002] The paper packaging industry is one of the fastest-growing fields in the packaging industry, has a large room for development, and has been identified as one of the most promising green packaging materials. The main chemical components of paper are cellulose and hemicellulose, which belong to macromolecular polysaccharides. Its molecular structure is highly hydrophilic, and it is easier to absorb water from the surrounding environment, resulting in a decrease in the strength of the cardboard. Many studies have shown that the strength of paper packaging materials will drop to 10% to 20% of their original strength after absorbing water and getting wet. Therefore, the waterproof performance of paper packaging materials is very important during transportation and stor...

Claims

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Application Information

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IPC IPC(8): D21H23/56D21H25/06D21H23/58D21H21/16D21H19/40D21H19/54D21H19/58D21H19/46D21H27/10C08F220/18C08F220/14C08F220/28C08F220/34C08F220/24
CPCC08F220/18C08F220/1804D21H19/40D21H19/46D21H19/54D21H19/58D21H21/16D21H23/56D21H23/58D21H25/06D21H27/10C08F220/14C08F220/281C08F220/34C08F220/24
Inventor 张治国黄煜琪孙俊军索艳格朱民强钟沙洁王召霞
Owner ZHEJIANG GREAT SHENGDA PACKING CO LTD