How to identify imported high-end three proof thermal paper using infrared spectroscopy (FTIR)?

Infrared spectroscopy (FTIR) is a sensitive, accurate, and non-destructive testing method that can be used to identify imported high-end three proof thermal paper. The following are the specific steps and principles for identifying imported high-end three proof thermal paper using infrared spectroscopy:

1、 Principle

Infrared spectroscopy uses Fourier transform infrared spectrometer to analyze and test thermal paper samples, obtaining the infrared spectrum of the sample. Based on the absorption peaks in the infrared spectrum, the main components of thermal paper, such as coating materials, color developing agents, fillers, etc., can be identified. Due to the differences in composition and structure of thermal paper from different brands and origins, their infrared spectra may also vary.

2、 Steps

Sample preparation:

Collect imported high-end three proof thermal paper samples that need to be identified.

Ensure that the samples are dry, free from contamination, and maintain their original state as much as possible.

Instrument settings:

Open the Fourier transform infrared spectrometer for preheating and calibration.

Set appropriate parameters such as scanning range, resolution, and scanning frequency.

Sample testing:

Place the thermal paper sample on the sample stage of the infrared spectrometer to ensure good contact between the sample and the instrument.

Start the instrument and perform infrared spectral scanning.

Record and save the obtained infrared spectra.

Data analysis:

Compare the infrared spectra of different samples and observe the characteristics such as the position, shape, and intensity of absorption peaks.

Identify the sample based on the known composition and infrared spectral characteristics of the thermal paper.

If necessary, further quantitative analysis can be conducted to determine the content of each component in the sample.

3、 Precautions

Instrument accuracy: Ensure the accuracy and stability of the Fourier transform infrared spectrometer to obtain accurate and reliable infrared spectra.

Sample processing: Before testing, the sample needs to be properly processed, such as drying, cleaning, etc., to avoid interference with the test results.

Data analysis: The analysis of infrared spectra requires a certain level of professional knowledge and experience. Therefore, when conducting identification, it is necessary to combine the actual situation and known information for comprehensive analysis and judgment.

4、 Conclusion

Infrared spectroscopy is an effective method for identifying imported high-end three proof thermal paper. By comparing the infrared spectra of different samples, the main components and differences of thermal paper can be accurately identified. This method has the advantages of high sensitivity, good accuracy, and non-destructive testing, and is suitable for identifying various types of thermal paper. Meanwhile, infrared spectroscopy can also provide strong technical support for the quality control and research and development of thermal paper.