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Preparation method of high-resistance polymer coating liquid

A technology of high molecular polymer and coating liquid, applied in the directions of starch derivative coatings, cellulose derivative coatings, coatings, etc., can solve the problems of difficult recycling and difficult processing of polymer materials, so as to reduce processing costs and prepare Simple method and simple equipment requirements

Active Publication Date: 2013-01-23
GREATVIEW BEIJING TRADING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the existing polymer materials used as high barrier polymer coating solutions are difficult to process and difficult to recycle. Therefore, the present invention provides a multi-component environment-friendly high barrier polymer coating solution. The preparation method of the cloth liquid, the coating liquid prepared by this method has excellent oxygen barrier performance under the condition of forming a thin coating, and the coating liquid has the advantages of simple preparation process and stable performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] High barrier polymer coating solution includes the following components:

[0049] Polyvinyl alcohol PVOH 18wt%, its molecular weight is 13200, alcoholysis degree is 88wt%;

[0050] Nano silica 1wt%, specific surface area is 200m 2 / g;

[0051] Silane coupling agent KH-570 0.1%wt;

[0052] Acetic acid 0.32wt%;

[0053] Polyacrylic acid 0.32wt%, its molecular weight 5000;

[0054]Cross-linking agent 1.2wt%, described cross-linking agent is the mixture of boric acid and sodium borate, and its weight ratio is 1: 1;

[0055] Ethanol 5wt%;

[0056] Water 74.06wt%.

[0057] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0058] (1) Add 25 parts of PVOH with a molecular weight of 13200 and an alcoholysis degree of 88%wt to 75 parts of water at 92°C, stir at 500 rpm for 40 minutes to obtain a solution, cool to 30°C for use.

[0059] (2) The specific surface area of ​​25 parts is 200m 2 / g silicon dioxide, 2.5 parts of KH-570, 3.5 ...

Embodiment 2

[0063] High barrier polymer coating solution includes the following components:

[0064] Polyvinyl alcohol PVOH 10.5wt%, its molecular weight 75000, alcoholysis degree 99%wt;

[0065] Nano silicon dioxide 3.6wt%, specific surface area is 200m2 / g;

[0066] Silane coupling agent KH-570 0.05%wt;

[0067] Acetic acid 1.325wt%;

[0068] Polymethacrylic acid 1.2wt%, its molecular weight 5000;

[0069] Cross-linking agent 0.45wt%, described cross-linking agent is the mixture of boric acid and sodium borate, and its weight ratio is 1: 1;

[0070] Isopropanol 8wt%;

[0071] Water 74.875wt%.

[0072] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0073] (1) Add 20 parts of PVOH with a molecular weight of 75,000 and an alcoholysis degree of 99% wt to 80 parts of water at 92°C, stir at 800 rpm for 40 minutes to obtain a solution, cool to 30°C for later use;

[0074] (2) The specific surface area of ​​24 parts is 200m 2 / g silicon dioxide, 0...

Embodiment 3

[0078] High barrier polymer coating solution includes the following components:

[0079] Polyvinyl alcohol PVOH 10wt%, its molecular weight 75000, alcoholysis degree 99%wt;

[0080] Nano-alumina 7wt%, specific surface area is 200m 2 / g;

[0081] Acetic acid 1.18wt%;

[0082] Polymethacrylic acid 0.168wt%, its molecular weight 5000;

[0083] Cross-linking agent 0.5wt%, described cross-linking agent is the mixture of boric acid and sodium borate, and its weight ratio is 1: 3;

[0084] Isopropanol 11.72wt%;

[0085] Water 69.432wt%.

[0086] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0087] (1) Add 20 parts of PVOH with a molecular weight of 75000 and an alcoholysis degree of 99%wt to 80 parts of water at 95°C, stir at 800rpm for 40 minutes to obtain a solution, cool to 30°C for later use;

[0088] (2) The specific surface area of ​​25 parts is 200m 2 / g alumina, 3.5 parts of acetic acid, 0.6 part of 10000 molecular weight poly...

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Abstract

A preparation method of high-resistance polymer coating liquid comprises the following steps of: firstly, adding the water-soluble high polymer with high hydroxyl density into part of water with a temperature of 92-99 DEG C, stirring to obtain a solution of the water-soluble high polymer with high hydroxyl density and reducing the temperature to be 30-40 DEG C for later use; secondly, adding nano metal oxide, a viscosity modifier, a polymer dispersant and a coupling agent into part of water and stirring to obtain a homogeneous and transparent dispersion liquid; and thirdly, mixing the solution of the water-soluble high polymer with high hydroxyl density prepared in the first step with the homogeneous and transparent dispersion liquid prepared in the second step, then sequentially adding the balance of water, a drying regulator and a cross-linking agent, stirring at the speed of 50-500 rpm for 30-60 minutes and filtering by using a stainless steel filter with 200-800 meshes to obtain the high-resistance coating liquid. The multi-component environment-friendly coating liquid prepared in the invention has excellent oxygen-resistance performance under the condition that a relatively thin coating is formed and simultaneously has the advantages of simple preparation process and stable performance.

Description

technical field [0001] The invention relates to a preparation method of a high-barrier polymer with high oxygen barrier properties after film formation. Background technique [0002] In the process of food storage and transportation, there are many factors that lead to food spoilage, among which the food spoilage is mainly caused by the contact between food and oxygen in the air. For liquid food, in order to improve the storage time and shelf life of the food, it is usually packaged with materials with high barrier properties to oxygen, and the package must have sufficient water resistance to prevent leakage of the contents. [0003] For water resistance, if you choose non-polar polymer materials such as polyolefins, including polyethylene, polypropylene, etc., a continuous mold with sufficient thickness can provide good water resistance; for oxygen with a small molecular diameter, you must use Strong polarity, high crystallinity, and high density materials can obtain low o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/04C09D103/02C09D103/04C09D101/02C09D101/08C09D7/12C09D5/00
Inventor 不公告发明人
Owner GREATVIEW BEIJING TRADING CO LTD
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