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Method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive

A technology of polyvinyl acetate and organic compounds, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effect of solving experimental errors, eliminating influence and interference

Active Publication Date: 2013-01-16
GANSU TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the method of determining the content of volatile organic compounds in polyvinyl acetate water-based adhesives by static headspace-gas chromatography-mass spectrometry

Method used

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  • Method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive
  • Method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive
  • Method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive

Examples

Experimental program
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Effect test

preparation example Construction

[0028] (1) Preparation of mixed standard stock solution I: Accurately weigh (accurate to 0.1mg) 15-20mg benzene, 15-20mg toluene, 15-20mg ethylbenzene, 15-20mg o-xylene, 15-20mg m-xylene or p-xylene, 300-500mg ethanol, 300-500mg isopropanol, 300-500mg dimethylpropanal, 300-500mg butanone, 300-500mg isopropyl acetate, 300-500mg butanol, 300-500mg n-acetic acid Propyl ester, 300~500mg butyl acetate, 300~500mg di-tert-butyl peroxide, 1.4g~1.5g acetone, 1.4g~1.5g methyl acetate, 1.4g~1.5g vinyl acetate, 1.4g~1.5 Put g ethyl acetate, 1.4g ~ 1.5g tert-butanol and 10g methanol in a 250mL volumetric flask, dilute to the mark with the prepared matrix calibration solution and mix evenly to obtain the mixed standard stock solution I;

[0029] (2) Preparation of mixed standard stock solution II: Accurately pipette 1mL of mixed standard stock solution I into a 100mL volumetric flask, dilute to the mark with the prepared matrix calibration solution and mix evenly to obtain mixed standard st...

Embodiment 1

[0065] In the assay method of the present embodiment: the concentration of the sodium chloride aqueous solution in the matrix calibration solution is 90 g / L; the headspace equilibration time for the sample and the standard sample is 30 min. The specific measurement results are shown in Table 5.

[0066] Table 5 The detection results of volatile substances in polyvinyl acetate water-based adhesive samples A and B

[0067] sample

[0068] Note: Not listed in Table 5 and "-" means that the volatile organic compounds were not detected.

Embodiment 2

[0070] In the assay method of the present embodiment: the concentration of the sodium chloride aqueous solution in the matrix calibration solution is 120 g / L; the headspace equilibration time for the sample and the standard sample is 40 min. The specific measurement results are shown in Table 6.

[0071] Table 6 The detection results of volatile substances in polyvinyl acetate water-based adhesive samples C and D

[0072]

[0073]

[0074] Note: Not listed in Table 6 and "-" means that the volatile organic compounds were not detected.

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PUM

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Abstract

The invention discloses a method for determining volatile organic compounds in polyvinyl acetate type water-based adhesive. The method is applicable to determination of over twenty types of volatile organic compounds simultaneously, and includes steps of respectively preparing matrix calibrating solution, standard working solution and sample solution; analyzing the prepared standard working solution and sample solution by a static headspace gas gas chromatography mass spectrometer; and quantitatively analyzing contents of the volatile organic compounds in the polyvinyl acetate type water-based adhesive. The method has the advantages that detection cost and time are reduced greatly, the gap in the volatile organic compounds in the polyvinyl acetate type water-based adhesive is filled, experimental error caused in the prior art can be overcome well owning to a sample preparation manner, and the improved method is easy to operate, accurate, high in flexibility and recovery rate, good in repeatability and the like.

Description

technical field [0001] The invention relates to the technical field of volatile organic compound detection, in particular to a method for measuring volatile organic compounds contained in polyvinyl acetate water-based glue. Background technique [0002] The main varieties of polyvinyl acetate water-based adhesives include polyvinyl acetate emulsion and polyvinyl acetate copolymer emulsion. Polyvinyl acetate water-based adhesives use water as the dispersion medium, and the diameter of the prepared latex particles is between 0.05 and 10 μm, which can partially penetrate into the microscopic cracks and capillary channels of the substrate, and play a good bonding effect and are widely used in Wood processing, construction, textile, paper, leather, biomedicine, food packaging and other fields. In addition to the base material for basic adhesion, polyvinyl acetate water-based adhesives also need to add various auxiliary components in order to meet specific physical and chemical c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 朱存真
Owner GANSU TOBACCO IND
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