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Method of component analysis of complexes containing fatty acid and complexes of fatty acid derivative types

A technology of fatty acid derivatives and analysis methods, which is applied in the field of component analysis of complexes containing fatty acids and fatty acid derivatives, can solve the problems of inability to quantify, difficult component analysis, poor reproducibility and accuracy, etc. The effect of accurate analysis results and less sampling volume

Pending Publication Date: 2019-01-18
BEIJING RED AVENUE INNOVA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of composite additives is mostly a mixture of waxes, esters, soaps, amines and inorganic substances. , making component analysis more difficult, poor reproducibility and accuracy, unable to accurately quantify the fatty acids contained in fatty acid metal salts, fatty acid amines, fatty acid esters and other compounds respectively

Method used

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  • Method of component analysis of complexes containing fatty acid and complexes of fatty acid derivative types
  • Method of component analysis of complexes containing fatty acid and complexes of fatty acid derivative types
  • Method of component analysis of complexes containing fatty acid and complexes of fatty acid derivative types

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1: the test of laboratory known sample (containing 40% polyethylene wax, 60% zinc isooctanoate)

[0070] 1.1 Identification of infrared functional groups;

[0071] Take the sample (about 1 mg) and dry KBr (about 200 mg) and mix them evenly in an agate mortar. After fully grinding (to make the particles reach about 2 μm), put the mixture evenly between the top mold and the bottom mold of the solid tableting mold room, and then put the mold into the press, at 8T / cm 2 Keep it under pressure for 1-2 minutes to get transparent or uniform translucent tablets. Take out the tablet and load it into the solid sample test rack. Insert the solid sample test rack into the sample holder of the optical bench, let the light beam pass through the center of the sample, and quickly close the darkroom door, at 4000-500cm -1 Infrared spectra were collected in the wavenumber range. The infrared spectrum of the sample is shown in figure 1 , the analysis results of the infrared...

Embodiment 2

[0124] Embodiment 2: the test of laboratory known sample 2 (containing 80% polyethylene wax, 10% zinc isooctanoate, 10% ethanolamide stearate)

[0125] 2.1 Identification of infrared functional groups;

[0126] Take the sample (about 1 mg) and dry KBr (about 200 mg) and mix them evenly in an agate mortar. After fully grinding (to make the particles reach about 2 μm), put the mixture evenly between the top mold and the bottom mold of the solid tableting mold room, and then put the mold into the press, at 8T / cm 2 Keep it under pressure for 1-2 minutes to get transparent or uniform translucent tablets. Take out the tablet and load it into the solid sample test rack. Insert the solid sample test rack into the sample holder of the optical bench, let the light beam pass through the center of the sample, and quickly close the darkroom door, at 4000-500cm -1 Infrared spectra were collected in the wavenumber range. The infrared spectrum of the sample is shown in figure 2 , IR spe...

Embodiment 3

[0160] Embodiment 3: the test of laboratory known sample (containing 42% polyethylene wax, 45% zinc isooctanoate, 7% zinc stearate, 4% fatty acid pentaerythritol ester, 2% ethanolamide stearate)

[0161] 3.1 Identification of infrared functional groups;

[0162] Infrared spectrogram see image 3 , see Table 3-1 for peak analysis results.

[0163] Table 3-1 Sample infrared absorption spectrum peak analysis

[0164] spectral peak

Functional group assignment

3297.79cm -1

N-H stretching vibration absorption peak

3450.54cm -1

O-H stretching vibration absorption peak

2959.35cm -1 ~2849.06cm -1

Alkyl C-H stretching vibration absorption peak

1735.73cm -1

COO in ester group - The asymmetric stretching vibration absorption peak of

1642.48cm -1 、1593.42cm -1

COO in Zinc salt of isooctanoate - The asymmetric stretching vibration absorption peak of

1539.86cm -1

COO in zinc stearate - The a...

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Abstract

The invention provides a testing method of component analysis of complexes containing fatty acid and complexes of fatty acid derivative types. The method includes four links of infrared functional-group identification, component separation, metal element content testing and result analysis. Component separation includes the three steps of: 1) solvent extract testing, 2) freezing precipitate content testing and 3) fatty acid content testing. Through the above method, the fatty acid in the complexes and fatty acid in fatty acid derivatives can be effectively separated for component analysis, experiment sampling amounts are small, repeatability and reproducibility are good, analysis results are accurate, and errors are small.

Description

technical field [0001] The invention belongs to the field of analysis and testing, and in particular relates to a method for component analysis of complexes containing fatty acids and fatty acid derivatives. Background technique [0002] The molecular weight of rubber is very large, and most of them are amorphous structures without functional groups, and they are elastic. In order to make them relatively move and deform during processing, a certain amount of plasticizer or softener is traditionally added during mixing. Increase the wettability, fluidity and deformability of rubber to increase the plasticity of rubber. Plasticizers without functional group structure, such as aliphatic hydrocarbon oil, aromatic hydrocarbon oil, naphthenic oil, etc., only play a role in wetting, diffusing, and swelling rubber hydrocarbons under mechanical action, loosening the entire rubber molecule and making it move. It acts as an external plasticizer for rubber molecules; and fatty acid der...

Claims

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Application Information

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IPC IPC(8): G01N21/3563G01N5/04G01N3/02G01N30/06G01N33/00
CPCG01N3/02G01N5/04G01N21/3563G01N30/06G01N33/00G01N2021/3572
Inventor 李秋荣高剑琴房彩琴刘慧娜艾相豪胡小娜董栋张宁
Owner BEIJING RED AVENUE INNOVA
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