The Raw Material Of Underwear Is Dazzling And Can Not Be Separated From Three Categories.

< p > thermal underwear has been holding the banner of high-tech concept in recent years. Last year there were "bamboo charcoal fiber", "nanometer", "infrared heating", "golden velvet", "salad" and so on. This year, there are "HEATTECH", seamless bamboo fiber, regenerated fiber, gold velvet, Australian pearl velvet...

Besides keeping warm, there are fantastic functions of body shaping, sterilizing and skin care.

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< p > how high tech are the thermal underwear? Guangzhou University, < a href= "http://www.91se91.com/" target= "_blank" > textile < /a > a href= "http://www.91se91.com/" target= "href=" > clothing department < clothing > Department of clothing department Chen Luo tells us that in reality, the dazzling thermal underwear on the market is replaced by the product name instead of the material name, not the high-tech or novelty fabric we think.

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< p > < strong > underwear fabric can not be separated from three main categories < /strong > < /p >.

Chen Luo, who has long been exposed to various a href= "http://www.91se91.com/news/index_c.asp" > fabric > /a > P, said that most high-tech functions are just gimmicks, so we can recognize their "civilian" status as long as we carefully look at the fabric composition on their labels.

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< p > the fabric of thermal underwear can not be separated from three categories.

The first category is natural fibers, including cotton, wool, silk and linen. The most commonly used thermal underwear in the market is pure cotton, wool and cashmere.

The second kind of synthetic fiber refers to fabrics made from chemical raw materials such as reed, cotton and wood, such as soybean fiber, modal fiber, bamboo charcoal fiber and so on.

The third type is man-made fiber, pure chemistry < a href= "http://www.91se91.com/news/" > fiber < /a >, such as polyester, acrylic, viscose and so on, most of which are extracted from oil and processed into raw materials for further processing.

According to the provisions of the < a href= "http://www.91se91.com/news/" > textile industry < /a >, there are 28 kinds of chemical fibers used in textile industry. If the names specified on the labels of merchants are beyond these 28, they may be playing with new terms.

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Zhang Xun, an international a href= "http://www.91se91.com/news/" > wool Bureau < /a > China regional retail promotion consultant, said in an interview: the so-called "warm card" and "thermal card" are acrylic fibers. "Sevilla" is a polyester. "Magic card" is a flexible spandex. "Lycra" is also the trademark of the DuPont Co's P elastic fiber spandex registered product.

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< p > < strong > How do you see the warmth retention performance? < /strong > < /p >

Which of the three kinds of thermal underwear of P has the most warm effect? CCTV has done experiments at the China textile industry association testing center.

Using three equal amounts of water at 37 degrees Celsius, the body temperature is respectively wrapped in three kinds of thermal underwear and put into the 21 degree thermostat.

After half an hour, the temperature changed. The water temperature of the chemical underwear was reduced by 33 degrees Celsius, the natural fiber dropped to 33.6 degrees Celsius, and the artificial fiber modle dropped to 35.2 degrees Celsius.

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< p > previously, it was thought that < a href= "http://www.91se91.com/" target= "_blank" > clothes < /a > the thicker the warmer, the thicker clothes had slower heat conduction. The above experiments proved that the thicker thermal underwear is more effective.

Miss Chen Luo explained that it is now necessary to see the thermal conductivity of raw materials. In addition to increasing the thickness, more thermal underwear is made by cutting off the pverse section of fibers so as to make the fibers hollow and keep the static air to reduce the thermal conductivity. These fabrics do not necessarily have thermal energy, but are achieved by reducing the heat exchange between the body itself and the outside world to achieve the effect of thermal insulation, and the air permeability is generally poor.

Chen introduced that there are indeed fabrics that can generate heat through physical reactions, such as polyvinyl chloride, but less market products.

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< p > teacher Chen Luo believes that the three fabrics have their own advantages and disadvantages. On the other hand, the thermal insulation is still stronger than traditional wool and cashmere natural fiber fabrics. They are warm and breathable. However, they need hand washing and can not be directly exposed to the sun. They are more troublesome in daily management. Synthetic fibers and synthetic fibers can be machine washable, and are not easy to wrinkle. They also have environmental protection elements, and the manufacturing cost is relatively cheap.

The same is excellent quality products, natural fiber underwear should be less than 300 yuan, more reasonable, chemical fiber underwear in 100-150 yuan is more reasonable.

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< p > < a href= "http://www.91se91.com" > high tech fabric > /a > Big Bang explosion - < /p >

< p > the so-called high-tech materials in thermal underwear mostly change some properties of traditional materials or increase some properties, actually they belong to synthetic fibers or man-made fibers.

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< p > we may as well see the true features of the thermal underwear fabrics commonly seen on the market.

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< p > "hot underwear": most of the viscose fiber, modal fiber, bamboo charcoal polyester fiber, they are chemical fiber or recycled fiber, mostly from the petroleum processing by-products, these materials have long been found, is not a new invention.

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< p > Salam: adding ultrafine particles of ceramic to the chemical fiber acrylic fiber, giving it a heating effect. This technology has been applied to many new fibers.

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< p > < < a href= > http://www.91se91.com > modal fiber > /a >: a material with high moisture regain can be converted into heat after absorbing water, but wool has the same effect.

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< p > the ingredients of "hi tech" fabrics are basically the same. They are basically man-made fibers such as cotton, acrylic, spandex, polyester, etc.

In recent years, the underwear of "HEATTECH" series, which is newly sold in UNIQLO and autumn and winter, is actually composed of polyester fiber, < a href= "http://www.91se91.com" > acrylic fiber < /a > viscose and spandex.

Polyester, also known as polyester fiber, is mainly used for finalization. Acrylic fiber, also known as polyacrylonitrile fiber, has a very good performance in terms of wool and elasticity. Its heat retention is 15% higher than that of wool. It has the name of synthetic wool, but its moisture absorption is almost zero. Spandex is an elastic fiber with high elasticity but poor moisture absorption. Viscose, also known as rayon and viscose filament, has a similar texture to cotton, but its cost is less than half of that of pure cotton. It is smooth, cool, breathable, antistatic and dyed brilliant.

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