Fabric Knowledge Introduction Outdoor Sportswear Fabric

"_blank" href= "//www.sjfzxm.com/" > dress less than /a. Although there is no essential difference between home and clothing, but because of the two characteristics of outdoor and sports, the requirements for clothing are relatively strict and harsh: outdoor sports have high fever and sweat evaporation, and require clothing to dissipate heat and air permeability; clothing is required to have certain waterproof properties in the field; outdoor sports want to minimize weight bearing, clothing should be as light as possible; outdoor wind, mountain cold, wind protection and thermal performance requirements are high; outdoor washing conditions are limited; clothing's antibacterial, odorant and anti fouling requirements are high; field operations rock climbing, clothing requires good resistance to tensile and tear resistance. < p > outdoor sports < a target= "

These performance requirements are very harsh from the angle of < a target= "_blank" href= "//www.sjfzxm.com/" > textile < /a > technology, and even many indicators are mutually inconsistent.

Any single natural or chemical fiber can not meet these requirements, and can only achieve these functions through a variety of < a href= "//www.sjfzxm.com/news/" > fiber > /a > complex and multi-channel chemical finishing.

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< p > 1, warmth retention: < /p >

< p > although thermal insulation is closely related to fabric thickness, outdoor sports do not allow clothing to be too heavy. Therefore, it is necessary to keep warm and light to meet the special requirements of outdoor sportswear.

The most common method is to add special chromium oxide, Magnesium Oxide, zirconia and other special ceramic powders in the spinning fluid of polyester and other synthetic fibers, especially nano scale ceramic powders. It can absorb visible light such as sunlight and convert it into heat energy, and also reflect the far-infrared rays emitted by the body itself, so it has excellent thermal insulation and heat storage performance.

Of course, far-infrared ceramic powders, adhesives and crosslinking agents can also be made into finishing agents, and the fabrics can be treated by coating, and then dried and baked, so that nano ceramic powder can be attached to the fabric surface and yarns.

This kind of finishing agent emits far infrared rays with a wavelength of 8~14 m, and also has the functions of bacteriostasis, deodorization, and promoting blood circulation.

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< p > in addition, according to the principle of bionics, the structure of polar bear hair is used to form hollow hollow fibers inside the polyester fiber, so that a large amount of air is not contained in the fiber, and the outer spiral coiling is used to maintain the fluffiness. It can play a good thermal insulation role under the premise of ensuring the lightness of the texture.

Of course, the "a target=" _blank "href=" //www.sjfzxm.com/ "> clothes" /a "or even the fabric is made into double layers or even three layers, so that the air circulation is increased. It is also one of the most traditional warm keeping measures.

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< p > 2, waterproof and moisture permeability: < /p >

< p > sports meet exudes a lot of sweat, and outdoor is hard to avoid rain and wind. This is a contradiction in itself: it must be able to prevent rain and snow from wetting and release sweat from the body in time.

Fortunately, the human body emits a single molecule of water vapor, while rain and snow are concentrated liquid droplets, which are far apart in size.

In addition, the liquid water has a property called surface tension, that is to gather its own volume characteristics. The water we see on lotus leaves is granular water droplets rather than paved water stains. This is because the surface of lotus leaves has a waxy hairy tissue, and water droplets can not diffuse and permeate on the waxy hair on the surface due to surface tension.

If you dissolve a drop of detergent or detergent into the water, the detergent will greatly reduce the surface tension of the liquid, and the water droplet will immediately disintegrate and spread on the lotus leaf.

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< p > waterproof and moisture permeable clothing is the use of the surface tension characteristics of water, the fabric coated with a layer of PTFE (with the "corrosion resistant fiber" tetrafluoroethylene PTFE of the same chemical composition and physical structure) of the fabric surface tension of chemical coating, so that the amount of water can be tightened up and can not disperse, infiltrate the fabric surface, and thus can not penetrate the fabric of the pores.

At the same time, the coating is porous, and the vapour of single molecule can be pported to the surface of the fabric smoothly through the capillary channel between the fibers.

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< p > after a large amount of exercise, if you stop in the field to rest, it may be that the water droplets in the inner layer of the clothes are caused by low ambient temperature and sweat can not escape in time, which gives people a very uncomfortable feeling. This is the so-called "condensation" phenomenon.

There is a special moisture permeation finishing process called low condensation. It uses polyurethane (PU) and hydrophilic nano ceramic powder to coat the fabric. When the body evaporates sweat, it can absorb too much sweat vapor, thus avoiding the phenomenon that the water vapor in the clothes exceeds the saturated vapor pressure and turns into water droplets.

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< p > in addition to thinking of fibers and coatings, moisture and sweat can also be achieved as far as possible.

For example, the use of double-layer structure, the inner layer of the body with hydrophobic fibers, and the outer layer of hydrophilic fibers, so sweat can rely on capillary action, from the skin to the inner layer of fiber, and because the outer layer of hydrophilic fiber and water molecules binding force is stronger than the internal hydrophobic fiber, water molecules again from the fabric's inner layer to the outer layer, and finally to the atmosphere.

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< p > 3, antibacterial and deodorant: < /p >

< p > due to the characteristics of sports, sweat and sebaceous glands are secreted.

And outdoor conditions are not likely to change clothes frequently. In suitable temperature and humidity environment, microbes also multiply, resulting in an indecent smell and itch.

Therefore, formal outdoor sportswear is chemically treated with antiseptic and odorant.

The way of finishing is to immobilize the organic quaternary amines, imidazoline surfactants or silver and copper heavy metal ions which have bactericidal effect on the fibers through resin and chain crosslinking agent, so that they have certain washability.

Of course, an important principle of choosing fungicides must be non-toxic or low toxic, otherwise it will be the end of the matter.

In recent years, Japan has made many explorations in the research of natural antibacterial finishing agents, such as aloe, Artemisia argyi, eucalyptus leaves, rose and other fungicidal aromatic oil extracts, which are coated in porous organic microcapsules or porous ceramic powders, and are attached to fabrics, and are cross-linked with resin. The bactericides are released slowly through mechanical action such as friction and backlog to achieve the purpose of durable antibacterial finishing.

This kind of natural antimicrobial agent is not only non-toxic, but also has certain health functions. It should be the development direction of antibacterial finishing.

However, because of the limited means of fixing antibacterial agents, the washing resistance of antibacterial agents is not good enough, and the antibacterial properties of each antibacterial agent decrease a few times, usually disappear after a few dozen times.

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< p > 4, antifouling and easy decontamination: < /p >

< p > outdoor sports often walk in the muddy wet mountain forests. Clothes are dirty and dirty. This requires the appearance of clothes to be stained with stains as easily as possible. Once contaminated, it is easy to wash and remove.

Changing the surface properties of the fibers greatly improves the surface tension of the fabric, so that oil stains and other stains are difficult to penetrate into the fabric. Minor stains can be removed by wet cloth and the heavier stains are easy to clean.

Antifouling finishing not only can prevent oil pollution, but also has waterproof and moisture permeable properties, commonly known as "three proofing finishing" (water repellent, oil repellent, anti fouling), which is a more practical and effective advanced chemical finishing method. It is commonly used in fabric finishing of outer garment and backpack, < A target= "_blank" href= "//www.sjfzxm.com/" > shoes < /a > tents.

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< p > 5, antistatic and radiation protection finishing < /p >

< p > mountaineering is the core of outdoor sports. In addition to the original dense forest, the alpine plateau with an altitude of 3000 meters or more is characterized by low air pressure, easy evaporation of water, and generally dry environment. Outdoor clothing is basically made of chemical fiber fabrics. Therefore, electrostatic problems are more prominent.

The harm of static electricity is generally shown in that clothes are easy to pilling, easy to be stained with dirt and dirt, close to skin, electric shock and sticky feeling.

If we carry sophisticated electronic instruments such as electronic compass, altitude meter, GPS navigator and so on, we may be disturbed by the static electricity of clothing, resulting in errors and serious consequences.

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< p > any object may rub against each other to produce static electricity. However, only the dry insulating objects will accumulate static electricity and cause harm.

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< p > so the best antistatic "a href=" //www.sjfzxm.com > fabric > /a > of course is made of natural fibers, but as mentioned before, pure natural fibers are not suitable for outdoor sports special requirements, and even natural fibers will produce static electricity due to lack of water molecules in very dry environment.

There are two main ways of antistatic finishing of fabrics: one is to weave metal wires into fabric and make conductive fabrics (also electromagnetic shielding fabrics and radiation resistant fabrics).

But this fabric is not suitable for sportswear. It is mainly soft and uncomfortable.

Another way is to use block polyether, polyacrylate and other antistatic agents which have hygroscopic effect. They can coat the surface of the fabric with a layer of chemical film that can adsorb water molecules, so that a continuous conductive water film will form on the surface of the fabric, and the electrostatic conduction will dissipate.

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At P high altitude, because of the relative thinning of the atmosphere, the barrier effect of ultraviolet radiation is greatly reduced, and the intensity of ultraviolet radiation is much higher than that in low altitude areas.

Ultraviolet radiation can effectively promote the generation of vitamins, which has bactericidal effect. However, too strong irradiation can cause harm to human skin.

Ultraviolet radiation has a strong penetrating power, and the general fabric can not completely shield its exposure.

Nano level inorganic titanium dioxide (TiO2), nano Zinc Oxide (ZnO) and other UV shielding agents and organic salicylic acid, cyanoacrylate, two benzophenone, benzo three azole and other UV absorbers, using resin crosslinking method fixed on the fabric, it can play a certain role in radiation protection.

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< p > it can be said that outdoors < a href= "//www.sjfzxm.com" > sportswear < /a > represents the latest cutting-edge technology in the development of textile science today. This is also a seemingly unimportant mountaineering suit and assault trousers, which are hundreds of thousands or even thousands of yuan.

Although the price is not low, a set of professional outdoor sportswear, which combines windproof, breathable, moisture-proof, heat preservation and radiation protection, may sometimes have the same meaning as life for a mountaineer. However, due to the diversity, complexity and unpredictability of outdoor sports, there may be many different requirements for the function of clothing because of the different environment and mode of movement. Therefore, for the current science and technology, the overall performance of outdoor sportswear is still difficult to be perfect.

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