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Method for qualitatively analyzing and detecting residual micromolecule monomer components of polycarboxylate superplasticizer

A small molecule monomer, qualitative analysis technology, applied in the analysis of materials, material analysis by optical means, measurement devices, etc., can solve problems such as complex components, and achieve the effects of good reproducibility, sensitive detection, and performance optimization

Active Publication Date: 2016-10-12
KZJ NEW MATERIALS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polycarboxylate superplasticizer is a polymer compound with complex components, and a single instrument has certain limitations in the detection of its components
At present, there is no literature and patent report on the composition analysis of polycarboxylate superplasticizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The present invention aims to provide a method for qualitative analysis of residual small-molecule monomer components of a polycarboxylate superplasticizer. In the example, a sample of a polycarboxylate superplasticizer is taken as an example (hereinafter referred to as sample 1). The sample 1 used is a commercially available polycarboxylate water reducer produced by a company, and the index meets the requirements of GB 8076-2008 "Concrete Admixtures".

[0026] (1) Elemental analysis

[0027] Take 10g of sample 1, dry it in an oven at 105 °C, digest it at a high temperature of 1400 °C, and perform elemental analysis and test on the Vario EL Cube elemental analyzer to obtain the elemental analysis data of sample 1, and it is concluded that its element type contains carbon, hydrogen, oxygen and nitrogen.

[0028] (2) Fourier transform infrared spectroscopy scanning analysis

[0029] Fourier transform infrared spectrum scanning was carried out by the coating method, and a...

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Abstract

The invention discloses a method for qualitatively analyzing and detecting residual micromolecule monomer components of a polycarboxylate superplasticizer. The method comprises steps as follows: (1) a polycarboxylate superplasticizer sample is dried, a solid sample is obtained and subjected to element analysis test, element analysis data are obtained, and the variety of elements in the polycarboxylate superplasticizer sample is qualitatively analyzed; (2) the polycarboxylate superplasticizer sample is subjected to Fourier transform infrared spectroscopy scanning with a coating method, and an infrared spectrum of the polycarboxylate superplasticizer sample is obtained; (3) the polycarboxylate superplasticizer sample is extracted with ethyl acetate, and an obtained extracting solution is tested with a high-performance liquid chromatograph; (4) the polycarboxylate superplasticizer sample is extracted with acetonitrile, GC-MS (gas chromatograph-mass spectrometer) data of an obtained extracting solution are obtained with a GC-MS. The qualitative analysis and detection method is a method for qualitatively analyzing the residual micromolecule monomer components of the polycarboxylate superplasticizer and provides technical support for performance optimization and technology improvement of the polycarboxylate superplasticizer sample.

Description

technical field [0001] The invention belongs to the technical field of building material detection, in particular to a method for qualitative analysis and detection of residual small-molecule monomer components of a polycarboxylate superplasticizer. Background technique [0002] Polycarboxylate superplasticizer is a kind of concrete admixture with a large amount in building materials at present. It has a series of excellent characteristics: extremely high water reduction rate, extremely small output, good compatibility with cement, etc. In the development process of polycarboxylate superplasticizer, people are devoted to finding products with better performance, and it is particularly important to analyze and detect its key unknown components. [0003] At present, the commonly used instruments for the composition analysis of unknown substances are: gas chromatography, high performance liquid chromatography, gas chromatography-mass spectrometry, nuclear magnetic resonance, sc...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N30/88G01N21/3577
CPCG01N21/3577G01N30/88G01N33/00
Inventor 李格丽方云辉林倩
Owner KZJ NEW MATERIALS GROUP CO LTD