锦纶基磁性纤维的制备及其性能

为满足市场对磁性纺织品的需求,通过在锦纶纺丝熔体中分别添加磁性材料,成功制备锦纶基磁性纤维。借助红外光谱仪、X射线衍射仪、扫描电子显微镜、X射线能谱仪、差示扫描量热仪以及强力机等对锦纶基磁性纤维的分子结构、结晶结构、形态结构以及各项性能进行表征。结果表明:锦纶基磁性纤维中均匀分散着铁氧体磁粉;磁粉添加量对纤维的熔点影响较小;随磁粉添加量的增加,锦纶基磁性纤维的断裂强力逐渐减小,但即使磁粉含量为25%时,纤维的强力仍达2.50 cN/dtex,可满足织造要求;用锦纶基磁性纤维织制了3种不同规格的针织物,其磁感应强度均介于0.02~0.1 mT之间,随着纤维中磁粉添加量的增加,织物的磁感应强度增大。

Preparation and properties of polyamide-based magnetic fibers

In order to meet the market demand for health-care textiles, polyamide-based magnetic fibers were successfully prepared by adding magnetic materials into polyamide spinning melt. The Fourier transform infrared spectrometry, X-ray diffraction, scanning electron microscopy, X-ray energy dispersive spectroscopy, differential scanning calorimetry, and tensile strength tester were carried out to analyze the chemical structure, crystal structure, morphology and various properties of the magnetic fibers. The results show that the ferrite magnetic powders are uniformly dispersed in nylon-based magnetic fibers; the magnetic powder content does not have much influence on the melting point of the nylon fiber; the breaking strength decreases with the increase of the magnetic powder content, but even if the magnetic powder content is up to 25%, the strength of the fiber is still 2.50 cN/dtex, which can meet the weaving requirements; and three different sizes of knitted fabrics were woven with nylon-based magnetic fibers, the three kinds of fabric have a magnetic flux density between 0.02 mT and 0.1 mT, and the magnetic flux density of the fabric increases with the content of the magnetic powder.