Memory fabrics refer to fabrics with morphological memory functions, and some people call them memory fabrics or morphological memory fabrics. “It refers to a product with a certain original shape, after being deformed and fixed, it can return to its original shape and characteristics under the stimulation of specific external conditions (such as heat, machinery, light, magnetism or electricity, etc.).

At present, various shape memory fabrics launched by domestic and foreign textile enterprises: polymer material fibers, nickel-titanium alloy fibers and so on. The principle of polymer material shape memory fiber is to use modern polymer physics and polymer synthesis modification technology to carry out molecular combination and modification of general polymer materials.

For example, the molecular combination and molecular structure adjustment of polyethylene, polyester, polyurethane and other polymer materials, so that they have the common characteristics of plastics and rubber at the same time, have the properties of plastics in the normal temperature range, that is, rigidity, shape stability and recovery, and at the same time It has the characteristics of rubber at a certain temperature (the so-called memory temperature), which is mainly manifested in the deformability and shape recovery of the material, which is the memory function of the material, that is, the cycle of remembering the initial state-fixed deformation-returning to the initial state.

Shape memory fibers can be used not only for processing smart clothing, but also for medical applications. For example, setting the shape memory temperature near the body temperature of the human body can be used as surgical sutures or medical implants.

Because the material has a memory function, it can cut into the wound in the form of a loose thread. When it is heated to body temperature, the material remembers the pre-designed shape and size, and it shrinks and tightens the wound. After the wound is healed , The material decomposes on its own, and then is harmlessly absorbed by the human body.

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