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Method for detecting content of polycyclic aromatic hydrocarbon in resin material

A polycyclic aromatic hydrocarbon and resin material technology, applied in the field of testing raw materials for tire production, can solve problems such as lack of basic research, and achieve the effect of eliminating products that exceed the standard

Inactive Publication Date: 2021-07-23
TRIANGLE TIRE
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  • Application Information

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Problems solved by technology

At present, in the industry, H in tire materials Bay There are few studies on the impact of the test on the content, lack of basic research, and there is currently no specific research on PAHs in raw materials for rubber products. Bay content method, so carry out the H in the material Bay It is very necessary to detect the content of

Method used

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  • Method for detecting content of polycyclic aromatic hydrocarbon in resin material
  • Method for detecting content of polycyclic aromatic hydrocarbon in resin material
  • Method for detecting content of polycyclic aromatic hydrocarbon in resin material

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Embodiment Construction

[0034] 1) Sample treatment: Weigh 50±5 mg of hydrocarbon mixed resin for rubber and dissolve it in cyclohexane, quantitatively transfer the alkane solution to the SPE column, and collect the eluate with a beaker. Take another 0.5mL alkane to wash the small beaker to ensure that all the resin is transferred to the SPE column. After all of the alkane solution has been absorbed into the SPE cartridge, start eluting the non-polar components with the alkane. Maintain a steady flow rate during the elution process, and the flow rate does not exceed 5mL / min. When all alkanes have passed through the SPE column, stop collecting the purified fraction. Dry the extract with nitrogen gas. Weigh the dry residue (accurate to 0.1 mg) and calculate the percent recovery. Repeat the purification suction filtration process twice, using fresh purification agent each time. Three percent recovery averages were calculated until the individual averages were within 5%.

[0035] 2) Test: Dissolve th...

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Abstract

The invention relates to a method for detecting the content of polycyclic aromatic hydrocarbon in a resin material, and belongs to the field of testing of raw materials for tire production. The method comprises the following steps of: 1) performing sample treatment, specifically, dissolving hydrocarbon resin in an alkane solvent, quantitatively transferring an alkane solution into an SPE column, performing eluting with alkane, and collecting a purified part; 2) dissolving dried residues with deuterated chloroform, then carrying out nuclear magnetic resonance test, and carrying out a deuterated chloroform blank experiment. and 3) carrying out integration on nuclear magnetic hydrogen spectra and calculating the HBay content according to a formula. The method has the advantages of high accuracy and rapidness, and better repeatability and reproducibility. The method can monitor the content of hydrocarbon resin polycyclic aromatic hydrocarbon HBay in raw materials for tires, so that the purpose of monitoring the content of the polycyclic aromatic hydrocarbon HBay in the tires from the production source is achieved, and the generation of environment-unfriendly tires is prevented.

Description

technical field [0001] The invention relates to the field of testing raw materials for tire production, in particular to a method for detecting the content of polycyclic aromatic hydrocarbons in resin materials. Background technique [0002] As we all know, polycyclic aromatic hydrocarbons refer to aromatic hydrocarbons containing two or more benzene rings. It has toxic heredity, toxic mutation and carcinogenicity, and can cause various harms to the human body, such as damage to the nervous system of the respiratory system, circulatory system, and damage to the liver and kidneys. It has been identified as the main organic pollutant affecting human health. In the molecular structure of nonlinear polycyclic aromatic hydrocarbons composed of three or more rings, there is a typical triangular concave area on the edge of the molecule. The hydrogen atoms in this area are called bay area hydrogen. 1 The H NMR spectrometer can sensitively identify and quantify the hydrogen atoms in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08
CPCG01N24/08
Inventor 马秀菊张大为倪淑杰许秋焕严文利王苗苗
Owner TRIANGLE TIRE
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