NIUMAG
Time Domain NMR Detection Method of Fiber Oiling
Fiber Oiling also called Spin Finish
The purpose of applying an appropriate amount of oil in the fiber production process is to make the fiber antistatic, bundled and smooth, so as to facilitate post-processing. Uneven oiling of fibers will cause quality problems such as uneven evenness and wool. Oiling the fibers too high is a waste of money. In addition, in the production of spandex, the fiber oiling detection is not accurate, and the concentration and use time of the degreasing agent Ccl4 cannot be accurately determined, and Ccl4 is very destructive to spandex, which will make spandex brittle and lose its high elasticity. Therefore, it is necessary to accurately measure the oiling rate of fibers.
Time domain NMR Compare with Extraction Method
The traditional extraction method takes 5 to 6 hours for one measurement, while chemical fiber production is continuous and high-speed production, and problems cannot be controlled in time. At the same time, this method is costly and consumes a lot of reagents and labor. The NMR method has the advantages of being fast, non-destructive, green, and does not consume chemical reagents. Just take a small amount of fiber and put it in the probe to test, and the result can be obtained in ten seconds. The benefits it brings are:
Greatly improve the level of quality monitoring. The result of a single measurement is about half a minute. If any problem is found, it can be timely fed back to the production process for correction.
Save testing costs No need for a lot of chemical reagents, reduce labor costs, and reduce medical insurance costs caused by exposure to chemical reagents.
Direct economic benefits Accurate measurement can control the amount of oil and reduce the waste of fiber oil.
Green environmental protection does not require chemical reagents, which reduces the pollution to the human body and the environment and establishes a green and environmental protection image of the enterprise.