NIUMAG
Benchtop NMR used for the measurement of fluorinated coatings on fibers and textiles
Coated fabric is a fabric or cloth processed by a special process. Mainly based on the cloth, a special process is used to coat a layer of material with special functions, which adds special functions to the cloth. So, it is also called functional coated fabric or cloth.
Fluorinated coatings are commonly used in fibers and textiles to provide oil resistance, water resistance, easy cleaning, and flame retardant properties. It can be used for carpets, outdoor products, and high-performance clothing. Controlling the amount of fluorinated coating is very critical. Controlling the content of fluorinated coating can optimize the process and enhance the performance of the product. Low-field NMR can be used to measure fluorinated coatings quickly, simply, and accurately.
Basic principles of Benchtop NMR nuclear magnetic method:
The nuclear magnetic analysis technology is based on the direct measurement of fluorine 19 NMR (NMR) signal. Since the fluorine content is directly proportional to the intensity of the detected nuclear magnetic fluorine signal, the fluorine content (wt%) can be calculated using an appropriate calibration curve.
After using 3~6 samples with known fluorine content for calibration, the unknown samples can be tested within 30 seconds to 3 minutes. The testing process is fast and non-destructive, and industrial online process testing can be realized.
Compared with chemical methods, nuclear magnetic methods have better reproducibility, do not require chemical solvents, and can be operated by untrained personnel.
The advantages of Benchtop NMR:
1. The test speed is fast, and the test can be completed in a few seconds at the fastest.
2. the instrument calibration is simple.
3. Compared with traditional methods, the repeatability and reproducibility of nuclear magnetic method are much better.
4. The nuclear magnetic method can be used for quality inspection and quality control in the industrial production process, saving labor and significantly improving efficiency.
5. The instrument is easy to operate, no specialized technical personnel are required, and it is easy to operate by untrained personnel.
6. Powerful function, suitable for fluorine content test of fiber and textile products.
7. There is no requirement on the shape of the sample. The sample can be powder, granule, film or block.
8. The nuclear magnetic method is a non-invasive, non-destructive test, and the same sample can be repeatedly measured as needed.
9. The nuclear magnetic signal is generated by all hydrogen nuclei in the entire sample volume, and the test result does not depend on the sample surface or the color of the sample.
10. It can be used to test the 1H content in some raw materials and chemical products.
11. It can be used to test oil and water content in other chemical products.