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Water-based hydrophobic and oleophobic barrier coating, packaging paper and preparation method

A hydrophobic and oleophobic coating technology, which is applied in wrapping paper, wrapping paper, packaging, etc., can solve problems such as difficulty in effective recycling, ecological environmental hazards, and inability to degrade, and achieves benefits for popularization and application, excellent oil resistance, and easy to use Degradation effect

Inactive Publication Date: 2021-02-05
ZHONGSHAN TIAN JIA PAPER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the applicant found that it is difficult to effectively recycle the existing polyethylene plastic packaging paper, which has caused great harm to the ecological environment, and some polymers used in silicone oil paper contain bisphenol A. Harmful substances may be released during food, and there are also problems of non-degradability and difficulty in recycling

Method used

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  • Water-based hydrophobic and oleophobic barrier coating, packaging paper and preparation method
  • Water-based hydrophobic and oleophobic barrier coating, packaging paper and preparation method
  • Water-based hydrophobic and oleophobic barrier coating, packaging paper and preparation method

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preparation example Construction

[0032] like figure 1 Shown, the preparation method of a kind of water-based hydrophobic oleophobic barrier coating of the present invention, comprises the following steps:

[0033] Step S101. Adding the graphene powder into deionized water to disperse evenly to obtain a graphene dispersion; specifically, after adding the graphene powder into deionized water, disperse at a speed of 400-600rpm / min for 60-90min , the graphene powder is uniformly dispersed to prepare a graphene dispersion.

[0034] Step S102. Add the filler to the graphene dispersion, and add a dispersant and a pH regulator to fully disperse the filler and the graphene powder; specifically, take a certain amount of filler and slowly add it to the graphene in step S101 Into the dispersion liquid, add a dispersant and a pH regulator, and gradually increase the rotation speed to 1500rpm / min for 0.5-1 hour to ensure that the pigment and graphene are fully dispersed.

[0035] Step S103. Add styrene, methacrylate, acr...

Embodiment 1

[0046] A water-based hydrophobic and oleophobic barrier paper-based coating and a preparation method thereof comprises the following steps:

[0047] (1) 0.4 parts of Graphene are added to deionized water and dispersed for 80min at a rotating speed of 400rpm / min to prepare a uniformly dispersed Graphene solution;

[0048] (2) Weigh 35 parts of kaolin, slowly join in the graphene dispersion in step (1), and add 1 part of dispersant and 0.05 part of pH regulator therein, the rotating speed is gradually increased to 1500rpm, dispersed for 0.5 hours , to ensure that kaolin and graphene are fully dispersed;

[0049] (3) Add styrene 5g, methyl methacrylate 10g, acrylic acid 3g and emulsifier sodium lauryl sulfate, fatty alcohol polyoxyethylene ether to 40g deionized water while stirring, mix and stir 30min evenly, obtain stable pre-emulsion;

[0050] (4) initiator ammonium persulfate 1g and sodium bicarbonate 1g are heated and dissolved in 98g deionized water and stirred and mixed ...

Embodiment 2

[0057] A water-based hydrophobic and oleophobic barrier paper-based coating and a preparation method thereof comprises the following steps:

[0058] (1) 0.6 parts of Graphene are added to deionized water and dispersed for 80min at a rotating speed of 500rpm / min to prepare a uniformly dispersed Graphene solution;

[0059] (2) Weigh 48 parts of talcum powder, slowly join in the graphene dispersion in step (1), and add 2 parts of dispersant and 0.1 part of pH regulator therein, the rotating speed is gradually increased to 1500rpm, disperse 0.5 Hours, to ensure that talcum powder and graphene are fully dispersed;

[0060] (3) Add styrene 6.5g, butyl methacrylate 12g, acrylic acid 4g and emulsifier sodium lauryl sulfate, fatty alcohol polyoxyethylene ether to 50g deionized water while stirring, mix and stir 30min evenly, obtain stable pre-emulsion;

[0061] (4) initiator ammonium persulfate 1.2g and sodium bicarbonate 1g are heated and dissolved in 97.8g deionized water and stirr...

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Abstract

The invention relates to a water-based hydrophobic and oleophobic barrier coating, a packaging paper and a preparation method. The coating is prepared from the following components in parts by mass: 10-13 parts of methacrylate, 5-8 parts of styrene, 3-5 parts of acrylic acid, 0.2-0.8 part of graphene powder, 35-50 parts of a filler, 1-3 parts of a dispersing agent, 1-1.5 parts of an initiator, 3-5parts of an emulsifier, 100 parts of deionized water and 0.2-4 part of an auxiliary agent. The coating is coated on the surface of the base paper to form a compact film which is stably attached to the surface of the base paper, so that the barrier property of the base paper is improved, the base paper has excellent oil resistance, physical strength and hydrophobic and oleophobic properties, the toughness of the packaging paper is improved, and permeation of oxygen, water, grease and the like can be effectively prevented. The water-based hydrophobic and oleophobic barrier paper-based paint isnon-toxic and environment-friendly, is easy to degrade, and is beneficial to popularization and application.

Description

technical field [0001] The invention belongs to the technical field of packaging box waterproofing, and in particular relates to a water-based hydrophobic and oleophobic barrier coating, packaging paper and a preparation method. Background technique [0002] In order to obtain the effect of water and oil resistance, most of the food packaging papers are currently coated with a layer of polyethylene plastic on the paper to form a continuous and dense organic polymer film, which makes it have good barrier properties, water resistance, and water resistance. Oil effect; some packaging materials use silicone oil paper, which has a three-layer structure, the first layer of backing paper, the second layer of laminating film, and the third layer of silicone oil. However, the applicant found that it is difficult to effectively recycle the existing polyethylene plastic packaging paper, which has caused great harm to the ecological environment, and some polymers used in silicone oil pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H21/14D21H21/16D21H19/38D21H19/44D21H19/58B65D65/42C08F220/14C08F220/06C08F212/08C08F220/18
CPCD21H27/10D21H21/14D21H21/16D21H19/38D21H19/44D21H19/58B65D65/42C08F220/14C08F220/1804C08F220/1808B65D2565/381B65D2565/387C08F220/06C08F212/08
Inventor 孙小玲朱华杨谭康梅陈挺
Owner ZHONGSHAN TIAN JIA PAPER PROD
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