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Method for authenticating truth or falsity of polyurethane water-borne wood paint on the basis of nonlinear fingerprint graph

A water-based wood lacquer and fingerprint technology, which is applied in the preparation of instruments, scientific instruments, and test samples, etc., can solve problems such as distinctions, achieve the effects of ensuring demulsification, accelerating delamination, and increasing the frequency of collisions

Active Publication Date: 2019-04-02
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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  • Method for authenticating truth or falsity of polyurethane water-borne wood paint on the basis of nonlinear fingerprint graph
  • Method for authenticating truth or falsity of polyurethane water-borne wood paint on the basis of nonlinear fingerprint graph
  • Method for authenticating truth or falsity of polyurethane water-borne wood paint on the basis of nonlinear fingerprint graph

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The method for discriminating the authenticity of polyurethane water-based wood lacquer based on nonlinear fingerprint spectrum, comprises the steps:

[0058] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0059] Ⅰ. Sample pretreatment:

[0060] 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;

[0061] S2: Put the mixed component A in an ultrasonic device for ultrasonic treatment, and the ultrasonic treatment time is 15 minutes; after the ultrasonic treatment, let it stand for a period of time, and then microwave the mixed component A for 80 seconds to obtain the mixed component B;

[0062] S3: Carry out vacuum decompression and degassing to the mixed ...

Embodiment 2

[0098] The method for discriminating the authenticity of polyurethane water-based wood lacquer by nonlinear chemical fingerprint, comprises the steps:

[0099] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0100] Ⅰ. Sample pretreatment:

[0101] 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;

[0102] S2: Put the mixed component A in an ultrasonic device for ultrasonic treatment, and the ultrasonic treatment time is 20 minutes; after the ultrasonic treatment, let it stand for a period of time, and then microwave the mixed component A for 100 seconds to obtain the mixed component B;

[0103] S3: Carry out vacuum decompression and degassing to the mixed component B obtained in...

Embodiment 3

[0139] The method for discriminating the authenticity of polyurethane water-based wood lacquer by nonlinear chemical fingerprint, comprises the steps:

[0140] A. Establish the nonlinear chemical fingerprint of the chemical composition after pretreatment:

[0141] Ⅰ. Sample pretreatment:

[0142] 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;

[0143] S2: Put the mixed component A in an ultrasonic device for ultrasonic treatment, and the ultrasonic treatment time is 30 minutes; after the ultrasonic treatment, let it stand for a period of time, and then microwave the mixed component A for 130 seconds to obtain the mixed component B;

[0144] S3: Carry out vacuum decompression and degassing to the mixed component B obtained in...

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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] Water-based wood lacquer uses water as the dispersion medium, and has the advantages of non-toxic, non-environmental pollution, and harmless to the human body. Gradually replacing solvent-based wood lacquer is an inevitable trend in the future development of wood lacquer. In view of this, the development of new varieties of water-based wood lacquers, the improvement of the performance of water-based wood ware lacquers and the continuous improvement of the technical content of water-based wood ware lacquers have great practical significance for my country's paint industry. [0003] According to the classification of film-forming substrates, water-based wood paints are divided into two types: water-base...

Claims

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Application Information

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Patent Type & Authority Applications(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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