Detection Target
Qualitative Identification of Paints and Coatings
Overview
Paint is a viscous liquid coating applied to the surfaces of objects for protection or decoration, forming a continuous film that adheres firmly to the substrate. It is typically formulated with resins, oils, or emulsions as the primary components, with or without pigments and fillers, along with corresponding additives, and prepared using organic solvents or water. The main body of paint primarily comprises organic high-molecular compounds such as natural resins (rosin, raw lacquer, etc.), oils (tung oil, linseed oil, soybean oil, fish oil, etc.), synthetic resins, and mixed formulations, as well as inorganic compound-based paints (e.g., inorganic zinc-rich primers).
Using HKL-FTIR Spectrometer for the Coatings and Paints enables straightforward qualitative analysis of the primary components in a sample based on the characteristic peaks of the film-forming substances. This method is simple to operate and yields significant results. Principle Infrared spectroscopy is an effective method for qualitative identification of substances. By observing the characteristic absorption peaks in the infrared spectrum, the main components of the paint can be qualitatively analyzed based on the differences in its primary constituents.
Operating Conditions
Instrument and Accessories
1)Main unit: HKL-FTIR Spectrometer for the Coatings and Paints
2)Accessories: Demountable sample cell (KBr), Thin-film test magnetic mount(silicon wafer)/ ATR accessory
Test Conditions
1)Resolution: 4 cm-1
2)Scan times: 32
3)Detector: Pyroelectric Infrared Detector
4)Spectral range: 4000–400 cm-1
Sample Testing
Sample Preparation: Uniformly apply the sample onto the KBr window using a capillary tube.
Sample Spectrum
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Figure 1 Epoxy resin sample |
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Figure 2 Waterborne alkyd resin samples |
Conclusion
HKL-FTIR Spectrometer for the Coatings and Paints with the film paints method provides a reliable and straightforward approach for the qualitative analysis of paint and coating samples, requiring no sample preparation. This technique is an ideal method for identifying the main components of paints and coatings.