Silk not only has good heat dissipation, but also has good heat preservation. Its thermal insulation depends on its multi-pore fiber structure. There are many tiny fibers in a silk fiber, and these tiny fibers are made up of smaller fibers. Seemingly solid silk, in fact, more than 38%, therefore, is hollow, there are a lot of air in the gap, these air prevents loss of heat, make silk has the very good warmth retention property.
First, comfort. The real silk is made of protein fiber, which is highly biocompatible with human body. Besides, its surface is smooth, and its friction and stimulation coefficient is the lowest among all kinds of fiber, only 7.4%. Therefore, when our skin soft and smooth and exquisite silk encounters, it by its unique soft texture, according to the curve of the human body, considerate and care of our every inch of skin safely.
Second, good absorbance and dehumidification. Enrichment of fibroin fiber amino (- CHNH), hydrophilic groups such as amino group (NH2), and due to its porosity, easy water molecular diffusion, so it can absorb the moisture in the air or water, and keep a certain moisture. In normal temperature, it can help the skin retain a certain amount of moisture, not too dry skin; Wear in summer, but the sweat that can human body educates again and heat sends out quickly again, make a person feels cool and clinking. It is this property that makes true silk fabric more suitable for direct contact with human skin. Therefore, silk clothing is one of the necessary summer clothing
Third, sound absorption, dust absorption, heat resistance. Silk fabric has high porosity, thus has good sound-absorbing and inspiratory sex, so in addition to make clothing, can also be used for interior decoration, such as silk carpets, tapestries, curtain, wall cloth, etc. Decorate the room with silk decoration, not only can make the room clean, but also can keep the room quiet. Because silk has hygroscopic and dehumidifying properties as well as moisture retention, inhalation and porosity, it can also adjust indoor temperature and humidity, and can absorb harmful gases, dust and microbes. In addition, pure silk fiber has small thermal degeneration and is more heat - resistant. It when heated to 100 ℃, only 5 ~ 8% embrittlement, while most of the synthetic fiber thermal variation to 4 ~ 5 times larger than silk. Silk of combustion temperature at 300 ~ 400 ℃, flame retardant fiber, and the synthetic fiber combustion temperature at 200 ~ 2600 c, which are flammable, fusible. Accordingly, use silk fiber as the raw material of interior decoration, not only can have sound absorption, dust absorption, heat preservation function, still have fire retardant function.
Fourth, uv resistance. The tryptophan and tyrosine in silk protein can absorb ultraviolet ray, so silk has better anti-ultraviolet function. And ultraviolet ray is very harmful to human skin. Of course, after absorbing ultraviolet ray, silk itself can produce chemical change, make silk fabric in the sunlight irradiation, become yellow easily.
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