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A method for identifying authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint

A water-based wood lacquer and fingerprint technology, which is applied in the preparation of instruments, scientific instruments, and test samples, can solve problems such as differentiation, achieve the effects of ensuring demulsification, accelerating separation, and reducing the chance of being oxidized

Active Publication Date: 2020-12-18
HANDAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no detection of whether the main paint film material is acrylic or polyurethane. It is difficult to distinguish water-based acrylic and water-based polyurethane wood paint from the appearance, and consumers will choose the wrong one if they are not careful.

Method used

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  • A method for identifying authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint
  • A method for identifying authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint
  • A method for identifying authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The method for discriminating the authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint spectrum, comprises the steps:

[0059] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0060] Ⅰ. Sample pretreatment:

[0061] S1: Pour the sample into a container, then add 1.5% of the demulsifier by mass to the sample and 3% of the mixed solid by mass, and keep stirring until the mixed solid is completely dissolved, and then pass into the obtained mixed component Protective gas, the mixed component in the container is the mixed component A;

[0062] Wherein, the demulsifier is polyethylene polyamine propylene polyoxypropylene ether with a molecular weight of 2000 or an alkylphenol formaldehyde resin polyoxyethylene polyoxypropylene ether with a molecular weight of 400;

[0063] Mixed solids are made by mixing calcium chloride and potassium chloride and other masses;

[0064] S2: Put the mixed compo...

Embodiment 2

[0099] The method for discriminating the authenticity of polyurethane water-based wood lacquer by nonlinear chemical fingerprint, comprises the steps:

[0100] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0101] Ⅰ. Sample pretreatment:

[0102] S1: Pour the sample into a container, then add 2% of the sample demulsifier and 4% of the sample mixed solid, and keep stirring until the mixed solid is completely dissolved, and then pass into the obtained mixed component Protective gas, the mixed component in the container is the mixed component A;

[0103] Wherein, the demulsifier is polyethylene polyamine propylene polyoxypropylene ether with a molecular weight of 3000 or an alkylphenol formaldehyde resin polyoxyethylene polyoxypropylene ether with a molecular weight of 1000;

[0104] Mixed solids are made by mixing calcium chloride and potassium chloride and other masses;

[0105] S2: Put the mixed component A in an ultrasonic d...

Embodiment 3

[0140] The method for discriminating the authenticity of polyurethane water-based wood lacquer by nonlinear chemical fingerprint, comprises the steps:

[0141] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0142] Ⅰ. Sample pretreatment:

[0143] S1: Pour the sample into a container, then add 3% of the sample demulsifier and 5% of the sample mixed solid, and keep stirring until the mixed solid is completely dissolved, and then pass into the obtained mixed component Protective gas, the mixed component in the container is the mixed component A;

[0144] Wherein, the demulsifier is polyethylene polyamine propylene polyoxypropylene ether with a molecular weight of 4000 or an alkylphenol formaldehyde resin polyoxyethylene polyoxypropylene ether with a molecular weight of 2000;

[0145] Mixed solids are made by mixing calcium chloride and potassium chloride and other masses;

[0146] S2: Put the mixed component A in an ultrasonic...

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Abstract

The invention belongs to the technical field of water-borne wood paint authentication, and particularly relates to a method for authenticating the truth or falsity of polyurethane water-borne wood paint on the basis of a nonlinear fingerprint graph. A water-borne wood paint sample is subjected to preliminary treatment to quicken the layering of sample emulsion, so that an organic phase and an inorganic phase are fully separated, and an emulsion breaking effect on samples is guaranteed; the method is convenient for subsequent detection; if acrylic acid water-borne wood paint is doped in the polyurethane water-borne wood paint, during detection, acrylic acid emulsion subjected to acidolysis in sulfuric acid solution generates acrylic acid with reducing properties; and the above products aremixed in a B-Z vibration system consisting of H+, BrO3, Mn2+ and acrylic acid, a sample to be authenticated and a standard sample are compared according to the extraction characteristic parameters ofthe nonlinear fingerprint graph, and the variety as well as the truth or falsity of the sample to be authenticated can be authenticated according to an integral similarity. In addition, the method hasthe advantages of being good in reproducibility, short in operation time, economic and the like, and is suitable to be widely prompted and applied in authentication fields of the polyurethane water-borne wood paint.

Description

technical field [0001] The invention belongs to the technical field of identification of water-based wood lacquer, in particular to a method for identifying the authenticity of polyurethane water-based wood lacquer based on a nonlinear fingerprint. Background technique [0002] Environmental protection and energy are two major challenges we face in the 21st century. In order to meet this challenge, the coatings industry is gradually shifting from traditional varieties with high pollution, high energy consumption, and extreme dependence on petroleum industry products to environmentally friendly and resource-saving products such as water-based coatings, radiation-cured coatings, powder coatings, and high-solid content coatings. . The increasingly stringent laws and regulations in various countries have accelerated the pace of replacing solvent-based coatings with water-based coatings. [0003] my country is a major producer of paint in the world, and it is also the largest p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N1/34G01N27/416
CPCG01N1/28G01N1/34G01N27/416
Inventor 胡俊平韩晓田芳
Owner HANDAN COLLEGE
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