заплесневелый
Измерение завершения отжима методом ЯМР
Измерение окончания отжима
During the fiber production process, applying an appropriate amount of oil can make the fiber antistatic, bundled and smooth, which is convenient for post-processing. If the fiber is not evenly oiled, there will be quality problems such as fluff. Oiling the fiber too high will waste the cost. Кроме того, in the production of spandex, if the detection of fiber oiling is inaccurate, 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. Поэтому, it is necessary to accurately measure the fiber oiling rate.
Spin Finish Measurement Methods
The traditional extraction method takes 5-6 hours for one measurement, while chemical fiber production is continuous and high-speed production, and problems cannot be controlled in time. В то же время, this method is costly and consumes a lot of reagents and labor. The NMR method has the advantages of fast, неразрушающий, зеленый, and does not consume chemical reagents. It only needs to take a small amount of fiber and place it in the probe for testing, and the result can be obtained within ten seconds.
Spin Finish Measured by NMR and Advantages
1. Greatly improve the level of quality monitoring. The results can be obtained in about half a minute for a single measurement. If problems are found, they can be promptly fed back to the production process for correction.
2. Saving testing costs No need for a large amount of chemical reagents, reducing labor costs, and reducing medical insurance costs caused by exposure to chemical reagents.
3. Direct economic benefits Accurate measurement can well control the amount of oil agent and reduce the waste of fiber oil agent.
4. Environmental protection does not require chemical reagents, which reduces the pollution to the human body and the environment, and establishes a green and environmentally friendly image of the enterprise.
