Thermal Underwear: New Smart Fiber Shows Wonders.

Thermostat fabric - two way temperature regulation thermal insulation material.

Research shows that when the body is in a thermal equilibrium, the average temperature of the comfortable skin is about 33.4 degrees Celsius. The difference between the skin temperature and the average skin temperature of any part of the body is within the range of 1.5-3.0 degrees. The body feels cold and warm, exceeding the range of + 4.5 degrees Celsius, and the human body will feel cold and warm.

The temperature regulating fiber is a kind of two-way temperature adjusting and heat preservation material.

It has an endothermic function at higher ambient temperatures and has an exothermic function at lower ambient temperatures.

It fundamentally extends the original function of fiber and belongs to the new "intelligence".

According to its adjusting mechanism, the products can be divided into four types: medium phase change temperature regulating fiber, medium dissolution and precipitation tempering fiber, tempering and humidity regulating fiber and particle temperature regulating fiber.

The products in the market are mostly medium phase change thermostat materials (also called thermal storage thermoregulation materials). The so-called phase change refers to the pformation of material from one phase to another, which absorbs heat or releases heat, and the phase pition occurs at constant temperature.

By adding a certain medium in the fiber (considering its phase pition temperature is within a certain range), the phase change characteristics of the medium are used to ensure that the fiber temperature remains unchanged when absorbing or emitting heat.

The Outlast air conditioning fiber in the US is a new type of intelligent fiber developed by this mechanism. Outlast technology is mainly applied to acrylic fiber. This technology is to apply microcapsules (PCMS) containing Outlast technology to the surface of fabrics or to insert microcapsules (PCMS) into acrylic fibers.

The key technology is the use of microencapsulated thermal phase change material, which is HYDROCARBONWAX, which absorbs, stores and releases heat in the form of latent heat.

In the process of temperature change, solid liquid can be pformed into each other, thus achieving endothermic and exothermic effects.

Outlast fiber can be pure spinning, and can be blended with cotton, wool, silk, hemp and other kinds of fibers, woven and knitted, widely used in outdoor.

Blended yarn, knitted sweater, its quality has been licensed, a small amount of export, has been promoted to the domestic market; the ComforTemp constant temperature fiber produced by Swiss Scholler company and its products are also used as heat storage and thermal insulation, so that the wearers can maintain normal temperature regulation in the cold and hot environment. The research institutes in China also carry out related research. The AirTechno introduced by Japan's KomatsuSeiren company is also a kind of temperature adjusting function material, which adapts to the change of the external environment temperature through repeated heat absorption, heat storage and heat release. The material covers a film containing a layer of temperature regulating protein powder; the German W.L.Gore&Associates company's products adopt AirvantageTM technology, so that the wearer can be based on the Outlast technology. Our country has begun to import Outlast fibers, and some factories have developed air-conditioned fibers and wool.