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| summer is here, let's get cool textiles!

Time : 2020-07-13 Hits : 20

A few days ago, a "cool feeling" mask from Uniqlo attracted people's attention, causing the whole Country to queue up to buy it. It is true that masks have become a must-have fashion item for people to go out under the epidemic situation. However, faced with the long sultry feeling of summer, people begin to turn their eyes to cool textiles in order to get a sense of coolness and comfort. So, what is cool feeling textile after all, the cool feeling textile that is admired by the person more now what to have again?

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Functional fabrics with cool feeling generally adopt unique methods (such as modification of fiber raw materials or finishing processing, etc.), so that the fabrics have the function of rapidly diffusing body heat, accelerating perspiration and cooling down, and can keep the fabric cool and comfortable for a long time. Cooling functional fabrics are widely used in clothing and bedding.

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Cool feeling fiber


Cooling fiber is generally in polyester, polyamide fiber spinning melt or viscidity by adding some nanometer minerals, the use of these substances good thermal conductivity to reduce the surface temperature of the human body, the main products have mica fiber, jade fiber, rice wheat fiber.

For example, Shanghai Defron Chemical Fiber Co., Ltd. USES extraction and nanotechnology to optimize the processing of natural mineral materials such as jade powder, shell powder, mica powder into nanoscale particles, which are added online to the spinning melt to produce Kusma nanoscale cool fiber. The fiber has a continuous cool feeling. After contacting with the skin, the product will produce a 1 ~ 2℃ instant cool feeling, and the temperature difference of 5 ~ 6℃ will be caused by the long-time exposure of the sun.

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In practical application, In collaboration with DuPont, The company launched the 2020 A-Chill TOUCH COOL technology fabric T-shirt, which was also the first show of "SORONA®+COOL" COOL fiber technology in the world. The cooling principle is to add a certain proportion of ultradine jade powder in SORONA® fiber (300 ~ 500 nm) to increase the cooling function under the premise of maintaining good spinning performance of the fiber, so that the clothing in summer has a more cool touch. At the same time, combined with the heteromorphic cross-section structure of the fiber, the moisture absorption and quick drying performance of the fabric is better.

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Cool feeling to sort out


On the other hand, when auxiliants containing xylitol, peppermint oil and other heat-absorbing and moisture-absorbing agents are added in the finishing process, the fabrics will also have a sense of coolness, but the coolness is not durable and will decrease with the increase of washing times. Rudolf's RUCO® -Therm CMB -- Menthol Cool Comfort Finishing agent takes advantage of menthol's natural cooling properties to give the fabric a cool feel. At the same time, innovative moisture-sensitive response polymer components promote the continuous evaporation of moisture in the fabric, regulate the surface temperature and humidity, thus forming a long-term cooling effect.

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Other materials


As a kind of latent heat energy storage material, phase-change materials can realize energy storage and release by changing the phase state of materials at a certain temperature, which is very suitable for cool textiles. For example, NASA's Outlast® technology USES phase change materials (PCM) that absorb, store, and release heat for optimal thermal comfort. Fabrics with Outlast® fibers actively regulate temperature and manage heat and humidity on the surface of the body.


Outlast® technology has been used by many textile companies to develop intelligent temperature-regulating textile products. For example, Bielefin's Outlast air Conditioning fiber series USES fiber blending technology to directly blend Outlast® phase change temperature-regulating fibers into fabrics for optimal temperature regulation.


In addition, with the development of science and technology, more innovative nanomaterials are being studied for thermoregulation textiles. Researchers at Monash University have developed a nanofilm doped with caesium-tungsten oxide (CsxWO3) that can be used as a coating material for fabrics, effectively blocking near-infrared radiation. When the nano-coated cotton fabric was exposed to sunlight, it cooled by 4.5 degrees Celsius and protected against most uv rays, the researchers said. Moreover, the coating will not affect the fabric life and color, with good color retention and wash resistance.

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