Plastic particle composition analysis and testing process
Date：2025-06-17 10:50:07 Classification
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The plastic particle composition analysis and testing process is an important step to ensure the quality and performance of plastic materials. According to the search results, the following is the general process of plastic particle composition analysis and testing:
1. Sample preparation
- Sample collection: Collect representative samples from the plastic particles to be tested.
- Sample processing: According to the test requirements, the samples are pre-treated as necessary, such as cleaning, drying, crushing, etc.
2. Preliminary testing
- Appearance inspection: Observe the appearance characteristics of the sample such as color, shape, size, etc.
- Basic physical property tests: such as density, melting point, glass transition temperature, etc.
3. Chemical composition analysis
- Infrared spectroscopy (IR) analysis: The chemical bonds and functional groups of the sample are detected by infrared spectrometer to preliminarily determine the chemical composition of the sample.
- Nuclear magnetic resonance (NMR) analysis: The molecular structure and chemical composition of the sample are further confirmed by nuclear magnetic resonance.
- Chromatographic analysis: Such as gas chromatography (GC), liquid chromatography (LC), etc., are used to separate and quantitatively analyze various components in the sample.
4. Thermal performance test
- Differential scanning calorimetry (DSC): measure the thermal properties of the sample such as glass transition temperature, melting point, heat capacity, etc.
- Thermogravimetric analysis (TGA): measure the mass change of the sample during heating and evaluate its thermal stability.
5. Mechanical performance test
- Tensile test: measure the tensile strength, elongation at break and other mechanical properties of the sample.
- Bending test: measure the bending strength, bending modulus and other mechanical properties of the sample.
- Impact test: measure the impact strength and other mechanical properties of the sample.
6. Aging performance test
- Hot air aging test: evaluate the aging performance of the sample in a high temperature environment.
- UV aging test: evaluate the aging performance of the sample under ultraviolet irradiation.
- Salt spray test: evaluate the corrosion resistance of the sample in a salt spray environment.
7. Hazardous substance detection
- Heavy metal detection: such as lead, cadmium, mercury, etc., detected by atomic absorption spectroscopy (AAS) and other methods.
- Organic pollutant detection: such as polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), etc., are detected by gas chromatography-mass spectrometry (GC-MS) and other methods.
8. Data analysis and reporting
- Data processing: organize and analyze all test data.
- Results interpretation: judge whether the composition and performance of the sample meet the relevant standards and requirements based on the test results.
- Report writing: write a detailed test report, including sample information, test methods, test results, conclusions and suggestions, etc.
9. Quality control and feedback
- Quality control: perform quality control on the test process to ensure the accuracy and reliability of the test results.
- Feedback and improvement: provide improvement suggestions based on the test results to help customers optimize the production process and product quality.
Through the above process, the composition and performance of plastic particles can be comprehensively and accurately analyzed to ensure that they meet the relevant standards and requirements.
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