Research on high performance clothing and material technology

Warm protection barrier of ice and snow sports

——Hot clothing technology

The traditional thermal insulation clothing is to reduce the thermal conductivity of clothing by increasing the thickness of clothing, increasing the insulation air layer and so on. And self heating clothing, as the name implies, is to make clothing have the function of active heating. Electric heating element is an important part of it. At present, the materials used in the preparation of heating element mainly include metal materials, metal plating materials, conductive polymers, graphite conductive materials, etc. Among them, the carbon nanotube heating plate and graphene heating plate are the two of the mainstream heating plates with the best comprehensive performance, which have the characteristics of fast temperature rise, uniform heating and stable heating temperature.

Carbon nanotubes have excellent mechanical, electrical and chemical properties such as light weight, high strength and high conductivity. In addition, carbon nanotubes have a very large aspect ratio, which makes it possible to form a network structure of thin films by van der Waals force self-assembly without any substrate support. The self-supporting structure makes the carbon nanotube film have very good flexibility, and take into account the very good mechanical strength. It can bend arbitrarily and maintain stable structure and electrical properties.

Graphene has excellent optical, electrical and mechanical properties. It has important application prospects in materials, micro nano processing, energy, biomedicine and drug delivery, and is considered to be a revolutionary material in the future.

At present, the main research and development direction is to make conductive yarn into underwear and heating materials through knitting and embroidery, so that the heating clothing is more gentle, breathable and applied in various forms. Skincore is a wireless automatic heating underwear that can be controlled by a smartphone. It was launched on 14 November 2018 at crowdfunding KickStarter in Canada. Skiincore is made of conductive yarn. It adopts 100% pure knitting design. The heating element is located between the synthetic inner layer of moisture absorption and sweat wicking part and the outer layer of heat insulation wool. The yarn has 18 watts of heat power and can generate heat for up to 8 hours.