Benchtop NMR Instrument Apply in Textiles

RMN de mesa Instrument Apply in Textiles

In NMR Industrail solution, Niumag RMN de mesa has PQ001 Series which is widely applied in Textiles industry.

Coated fabrics are fabrics or fabrics that have been treated with a special process. Mainly, on the basis of the cloth, special technology is used to coat materials with special functions, so that the cloth adds special functions. Por lo tanto, it is also called functional coated fabric or cloth.

Fluorinated coatings are commonly used in fibers and textiles to provide oil resistance, water resistance, ease of cleaning and flame retardant properties. Can be used in carpets, outdoor products, and performance apparel. The control of the amount of fluorinated coating is very critical. Controlling the content of fluorinated coating can optimize the process and improve the performance of the product. RMN de mesa can be used for fast, simple, and accurate measurements of fluorinated coatings.

RMN de mesa Measurement Fundamentals of Fluorinated Coatings on Fibers and Textiles:

El benchtop NMR analysis technique is based on the direct measurement of the nuclear magnetic resonance (RMN) signal of fluorine 19. Since the fluorine content is proportional to the intensity of the detected NMR fluorine signal, the fluorine content (wt%) can be calculated using an appropriate calibration curve.

RMN de mesa Measurement Methods for Fluorinated Coatings on Fibers and Textiles:

After calibrating with 3~6 samples with known fluorine content, unknown samples can be tested within 30~3 minutes. El benchtop NMR testing process is fast and non-destructive, enabling industrial online process testing.

Compared to chemical methods, benchtop NMR has better reproducibility, does not require chemical solvents, and can be performed by untrained personnel.

Fiber oiling rate is an important quality control parameter, which directly determines whether the fiber can meet the requirements of use. Uneven oil content is a common problem in chemical fiber production. Las fibras con bajo contenido de aceite son propensas a la electricidad estática., mientras que las fibras con alto contenido de aceite son propensas a enredarse, Ambos afectarán seriamente el proceso normal de procesamiento textil.. Por lo tanto, it is very important to measure the oil content of fiber accurately and quickly to grasp and control the oil amount.

Método de extracción estándar: El principio del método de extracción estándar es utilizar aceite que se pueda disolver en un disolvente orgánico específico., extraer el aceite de la muestra con el disolvente orgánico adecuado a través del extractor de grasas, then evaporate the solvent to dryness, and weigh the residue. According to the quality of the oil and the quality of the sample, the oil content of the sample is calculated.
Método de lavado con jabón neutro.: the principle is to use the affinity of soap and oil. Under the action of washing force, El aceite de la muestra se transfiere al jabón., and then the sample is calculated according to the quality change of the sample after washing. contenido de aceite.
Método del índice de refracción óptico: El principio del método del índice de refracción óptico es utilizar el método de medir el ángulo crítico de reflexión total para medir el índice de refracción de una sustancia desconocida., and to quantitatively analyze some components in the solution to test the purity of the substance.
RMN de mesa method: El principio del método de RMN es utilizar espectroscopía de RMN para transmitir un campo magnético pulsado a la muestra de fibra.. Cuando se cancela el campo magnético, Se detecta la señal magnética de respuesta de la muestra., porque la señal emitida por la fibra es superior a la del aceite. La decadencia es rápida, y el contenido de aceite de la muestra se puede convertir a partir de la diferencia entre los dos.

Advantages of benchtop NMR Method:

1. Compared with the traditional method, el benchtop NMR measurement has much better repeatability and reproducibility;

2. The calibration of the benchtop NMR measuring instrument is simple;

3. RMN de mesa measurement can be used for oil and water content testing in other chemical products;

4.El benchtop NMR measurement function is powerful, suitable for the fluorine content test of fiber and textile products;

5. El benchtop NMR measuring instrument is easy to operate, does not require technical personnel, and is easy to operate by untrained personnel;

6. El benchtop NMR measurement test is fast;

7. El benchtop NMR measurement has no requirements on the shape of the sample, and the sample can be powder, granule, film or block.

8. El benchtop NMR measurement is a non-invasive and non-destructive test, and the same sample can be repeatedly measured as needed;

9. RMN de mesa measurement can be used for quality inspection and quality control in the industrial production process, saving labor and significantly improving efficiency;

10. RMN de mesa measurement can be used for 1H content testing in some raw materials and chemical products;

11.The NMR signal of benchtop NMR measurement is generated by all hydrogen nuclei in the entire sample volume, and the test result does not depend on the sample surface or sample color;