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Shape memory textile

Time : 2019-10-14 Hits : 8

Intelligent shape memory textile material refers to a kind of material that can restore its initial shape under certain conditions (stress, temperature, etc.) after plastic deformation. Its original shape can be designed into straight line, wave, helix or other shapes, which can be mainly divided into shape memory alloy fiber, shape memory polymer fiber and shape memory function fiber processed by finishing agent. Shape memory alloy fibers have the characteristics of hard hand feeling and strong recovery. They can be used as yarn cores and other fibers to spin fancy yarns with shape memory effect and woven into functional fabrics. There are many kinds of shape memory polymers, such as polyurethane, polylactone, fluorine-containing polymer and polyborneene, among which shape memory polyurethane is widely developed and applied because of its easy excitation, large shape variable, light weight and low cost. Shape memory polymer fiber has many advantages, such as soft hand feeling compared with shape memory alloy fiber, easy to form and has good shape stability, large adjustable range of mechanical properties, strain up to 300% or even larger, so it has a broad application prospect in textiles. In the future, the main development direction of shape memory textiles will be the design of green environmental protection materials, the research and development of high memory products and the mass production of products.


Wrinkle-resistant, sweat-draining and breathable shape memory textile

The research on shape memory textiles abroad started early, with a wide range of market applications, high overall technical level, rich data sources and high intelligence. At present, great progress has been made in the research of shape memory fibers in Japan, the United States, the United Kingdom, Italy and the Netherlands. For example, the Italian company designed a "lazy shirt" with shape memory by adding nickel, titanium and nylon to the fabric. When developing scald proof clothing, British textile institutions realized the successful practice of shape memory alloy smart textiles. Nickel-titanium alloy fiber was processed and fixed in the inside of the clothing. Once it came into contact with high-temperature shape memory fiber, it would be excited to achieve the purpose of scald proof. A subsidiary of Japan's mitsubishi heavy industries have developed a new material which has the function of shape memory polyurethane class Diaplex, this kind of laminated composite membrane and garment fabrics, not only show the high water repellency, and through the control of heat, can be on the wearer metabolic heat released by the intelligent response, suitable for manufacturing has shape memory and can be produced when heat and moisture in the environment temperature is higher channel multifunctional smart clothing, there are this kind of material the commercialization of the products, such as smart clothes, mountaineering wear, etc.


Application of shape memory alloy intelligent textiles in scald - proof clothing

Some domestic enterprises or research institutions have made great progress in the development and application of smart shape memory textile materials. For example, tianjin university of technology has designed thermally induced shape memory fiber by using post-finishing technology to process the fiber. The Hong Kong polytechnic university shape memory research center invented the cellulose based shape memory fabrics, and further study of the composition, structure of intelligent shape memory fiber shape memory temperature and the effects of the resilience and memory in the win min shape memory polymers and shape memory mask research play an important role. Compared with foreign enterprises, there are many researches on shape memory textile materials in China, but most of them are still in the experimental stage, with single materials and insufficient overall innovation degree, and most of them are follow-up studies. Many new varieties are still under development and have not yet achieved large-scale industrial production.

For more information, please pay attention to the report of China's textile product development in 2019.

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