Evaluation and measurement of magnetism on surface of magnetic knitted fabrics

Since magnetic field on fabric surface acts on the meridian and vital points of the human body and realizes health care through regulating body functions,people pay more attention to the health care function of the magnetic fabric. This paper discussed the methods of measurement of the magnetism of magnetic fabrics and the description of the results. The magnetic flux density on the surface of magnetic fabric sample was measured by the special instrument of high-precision Tesla measurement,and the distribution of the magnetic flux density on the surface of magnetic fabric was presented by visualization. The experiments were conducted to investigate the change of characteristics of the magnetic flux density on the surface of magnetic fabric sample after repeated washing and rubbing of the sample. The results showed that the magnetic flux density on the surface of magnetic fabric trends to increase first and then decrease. Generally,fabric loses its magnetic after washing 15 times or so. The key factor influencing the durability of the magnetism on the surface of magnetic fabric is the content of magnetic fiber in the fabric.