Japan's Yamagata University has announced that its researchers have developed a new material that is usually soft like rubber but will be as hard as plastic in magnetic field. This material is expected to be used to manufacture aseismic components, automotive cushioning materials and dispersible body weights. Functional furniture 。

The research team of Yamagata University in Japan added a diameter of 3 microns of iron particles to the polyurethane resin, and then produced a magnetic field of 300 Milla Tesla with permanent magnets. After 1/10 seconds, the iron particles were arranged in a straight line, making the rubber material hard.

According to the strength of the magnetic field, this new material hardness Up to 180 times the original hardness. Previous studies have been devoted to developing similar materials, but their hardness is only 3 times that of original hardness.

The tests carried out by the research team showed that the diameter of the rubber cylinder, which is 3.5 centimeters in diameter and 5 centimeters in diameter, is enough to withstand pressure of over 8 tons. After removing the magnetic field for dozens of seconds, the material can be restored to its original state. Softness 。