There are many types of outdoor sports clothing, mainly for mountaineering, skiing and other alpine sports. In addition to the physical fitness and skill requirements of the participants, outdoor sports also require clothing to match the harsh weather and complex geographical environment. The following is a discussion of the requirements for outdoor fabrics in different environments and different professions.
(1) Selection and application of waterproof and moisture-permeable outdoor fabrics
Outdoor sports will emit a lot of sweat, and it is inevitable to encounter wind and rain outdoors. This in itself is a pair of contradictions. It must be able to prevent rain and snow from getting wet, and it must be able to discharge the sweat from the body in time. Fortunately, what the human body evaporates is water vapor in a single-molecule state.
Waterproof and moisture-permeable clothing is to use the surface tension characteristics of water to coat a layer of PTFE on the fabric (the chemical composition and physical structure of polytetraoxyethylene PTFE, which is the “king of corrosion-resistant fibers”, are different. ) to enhance the strong chemical coating on the surface of the fabric, so that the water droplets can be absorbed as tightly as possible without spreading, and infiltrate the surface of the fabric, so that the pores on the fabric cannot be penetrated. At the same time, the coating is porous, and the water vapor in the monomolecular state can smoothly pass through the capillary pores on the fiber surface to be emitted to the surface of the fabric.
After a large amount of exercise, if you stop and rest in the wild, it may be because the outside temperature is low. Sweat cannot escape in time and water droplets are formed on the inner layer of the clothes, which makes people feel uncomfortable. This is the so-called “condensation” phenomenon. There is a special moisture-permeable finishing process called “low condensation”, which uses polyurethane (pu) and hydrophilic nano-ceramic powder to coat the fabric, which can absorb a lot of sweat when the human body evaporates. The sweat vapor that has passed through the clothes can be avoided, so as to avoid the phenomenon that the water vapor inside the clothes exceeds the saturated vapor pressure and is converted into water droplets.
In addition to figuring out methods from the fibers and coatings, the fabric structure can also try to absorb moisture and perspiration. For example, a double-layer structure is adopted. The inner layer of the body is made of hydrophobic fibers and the outer layer is made of hydrophilic fibers. The binding force of water molecules is stronger than that of the inner layer of hydrophobic fibers. evaporate into the atmosphere. Such performance brand clothing fabrics are mostly used in outdoor clothing such as mountain climbing and hiking.
(2) Characteristics and application of thermal insulation outdoor fabrics
Although thermal insulation is closely related to the thickness of the fabric, outdoor sports do not allow clothing to be too thick. It is heavy, so it needs to be warm and light to meet the special requirements of outdoor sports clothing. The most common method is to add special ceramic powders containing chromium oxide, magnesium oxide, silicon oxide and other special ceramic powders into the spinning solution of synthetic fibers such as polyester, especially nano-scale fine ceramic powders, which can absorb visible light such as sunlight and convert it into heat energy. , It can also reflect the far infrared rays emitted by the human body itself, so it has excellent thermal insulation and heat storage functions. Of course, the far-infrared ceramic powder binder and cross-linking agent can also be formulated into a finishing agent, and the woven fabric can be coated. After drying and baking treatment, the nano-ceramic powder can be attached to the surface of the fabric and the yarn. . Played a good thermal effect.
In addition, according to the principle of bionics, referring to the structure of polar bear hair, the inside of the polyester fiber is made into a porous core shape, so that the inside of the fiber contains a lot of non-circulating air. The outer part is made into a spiral curling package to maintain fluffy, which can play a good thermal insulation role on the premise of keeping the place light. Of course, making clothes and even fabrics into two-layer and three-layer layers is one of the most popular ways to keep warm with an increase in the number of airless layers.
The well-known outdoor brand “Supreme” will launch its new autumn clothing made with the latest “GALEFLEECE” high-quality fabrics in October. This fabric combines the breathability and lightness of the very ordinary “FL-EECE” (fleece) fabric with the excellent wind resistance and warmth of the professional “WINDSTOPPER” functional fabric. You can keep wearing this to maintain good wind protection, warmth and a certain degree of water extraction in harsh conditions such as cold and strong winds. It is mostly used for professional outdoor clothing such as alpine skiing and climbing.
(3) Antibacterial and deodorant outdoor clothing fabrics
Outdoor sports often produce a lot of sweat, resulting in a large amount of sebaceous gland secretion, and outdoor conditions It is impossible to change clothes often, and in a suitable temperature and humidity environment, microorganisms will multiply in large numbers, so regular outdoor sports clothes are finished with antibacterial and deodorant chemicals. The way of finishing is generally to fix organic polyamine type, imidazoline type surfactant or silver, copper and other metal ions with the function of collecting bacteria on the fiber through resin and hinge agent to make it have a certain washing resistance. Of course, an important principle for choosing a fungicide must be non-toxic or low-toxic. In recent years, Japan has done a lot of research on natural antibacterial finishing agents. Aromatic oil extract, encapsulated in porous organic microcapsules or porous ceramic powder, attached to the fabric, fixed with resin glue, and slowly released the bactericide through mechanical action such as friction backlog, which has achieved durable antibacterial finishing. Purpose. However, due to the limited means of fixing the antibacterial agent at present, the washing resistance of the antibacterial agent is not good enough, and the antibacterial performance decreases every time it is washed, and generally disappears completely after dozens of times. Dow Kanger AEGIS lightning protection and antibacterial agent uses molecular linkage to evenly distribute eighteen long carbon chains on the surface of the fabric, and integrates with the fabric fibers. This fabric is used with outdoor clothing for mountaineering and field training, travel and vacation. It is the first choice for professional jacket
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