How to analyze plastic components?
Date：2024-06-20 09:46:17 Classification
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Plastic composition analysis is a systematic process that usually includes steps such as sample preparation, analysis, result interpretation and report writing. The following is the detailed processing flow:
1. Sample preparation:
Cut the plastic material to be tested into small pieces or powder to facilitate subsequent detection and analysis.
Carry out necessary pretreatment, such as cleaning, drying, etc., to ensure that the sample is in a clean and dry state before testing.
2. Analysis method:
Infrared spectroscopy (FTIR): Determine the composition of a sample by measuring its absorption of infrared light. This method can analyze molecular vibration, rotation and other information in the sample to determine its chemical structure.
Ultraviolet spectroscopy (UV-Vis): Although mainly used for the analysis of organic compounds, under certain circumstances, it can also be used for the composition analysis of plastic materials.
Raman spectroscopy (Raman): Similar to infrared spectroscopy, but Raman spectroscopy performs analysis by measuring the scattering of light by a sample.
Differential thermal analysis (DSC): By heating or cooling the sample and observing changes in its thermal properties, the main component types and contents can be determined.
Thermogravimetric Analysis (TGA): Measures the weight change of a sample during heating to determine its composition.
Thermal analysis method:
Spectral analysis:
Gas Chromatography: Determining the composition of a sample by breaking it down and analyzing it with a gas chromatograph. This method is particularly effective for the analysis of volatile organic compounds.
Nuclear Magnetic Resonance (NMR): Uses the signals generated by the nuclei in sample molecules to conduct quantitative and qualitative analysis to determine its composition. NMR is a highly sensitive analytical method that is very useful for analyzing the composition of complex plastic materials.
3. Results interpretation and reporting:
Based on the test results, the components of the plastic material are analyzed quantitatively and qualitatively.
Interpret the impact of different ingredients on the performance and safety of plastic materials.
Prepare detailed test reports, including test methods, interpretation of results, and possible suggestions or improvement measures.
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