UV Fiber Development and Application

Frbiz Site


1 Overview


Increasing the material standard of living today, people's traditional sense of the fabrics and also have a new breakthrough in the pursuit of comfort, luxury, they also have health functional requirements into new fashion.


In recent years, a large number of CFCs and other halogen-containing compounds remain above the earth, the formation of active chlorine by UV decomposition, then a chain reaction with ozone, the destruction of the ozone layer, so that UV may reach the ground. Long-term exposure to ultraviolet radiation on the human body, the body will bring about various degrees of injuries, such as to increase the number of cataract patients, immune function is decreased, impeding the growth of animals, plants and water development, etc., this one developed a UV through the fiber, commonly known as: "Anti-UV fiber," in this fiber weaving a fabric with UV effect, the fabric on long summer field operations personnel, such as military personnel, traffic police, geologists, construction workers so wear clothes made of this fabric, you can prevent UV penetration. UV fiber produced with car upholstery reduce fading caused by ultraviolet radiation due to extended aging time.
brocade silk fabric


Experts had predicted the 2050 stratospheric ozone levels will be reduced by 4% -20%. By then, the impact of ultraviolet radiation on human health will become too large multiplier. Therefore, UV textiles came into being, anti-UV fiber gradually by people attach great importance to the future of UV fiber would be a great development prospect of protection can be.
natural fabrics


 2, anti-UV fiber manufacture and performance


First, select the appropriate UV additives (commonly known as UV absorbers, UV stabilizers) is important, this is a class to a strong selective absorption wavelength 290-400nm in the UV, the effective prevention and suppression of light, the role of oxygen aging Agents can not afford to change its structure. Such aids should also have the five poisons, low volatility, good thermal stability, chemical stability, hydrolysis resistance, extraction of water, and polymer compatibility.


UV additives can be divided into two major categories of inorganic and organic matter, make UV scattering inorganic substances to eliminate titanium dioxide, zinc oxide, talc, clay, calcium carbonate, etc., these inorganic materials with high refractive index, so that UV scattering occurs to prevent UV skin invasion. Phthalocyanine zinc oxide and titanium dioxide UV transmission is low, as most of the UV fiber chosen.


 2.1 Preparation of UV fiber


2.1.1 UV fiber production methods


2.1.1.1 fiber forming polymer in the polymerization process or molten state to join with the ultraviolet shielding properties of the component.


Is to choose a suitable UV absorber with fiber-forming polymers with the copolymer monomers, copolymers obtained by UV and UV-spun fiber. For example, Japanese patent reported that the use of conventional direct esterification or ester exchange obtained after the condensation method of UV good linear polyester, and through the conventional melt spinning spun into fibers. This fiber has good UV performance, effective absorption wavelength of 280-340nm UV, can be used as outdoor products.


2.1.1.2 In the fiber manufacturing process or any stage of the ultraviolet shielding agent mixed with fibers.


    UV fiber production can be obtained by blend spinning, about to ultraviolet shielding agents or UV absorbent polymer particles in the polymer blend spinning when adding or directly, it can first be made of UV masterbatch and then spinning. This system was anti-UV fiber finishing of textiles into the legal system features a durable UV, washing and good, soft, easy to dye. But the blended powder wire method because the quantity of how many particles of different size and uniformity of its functions are not the same, and may gradually block spinneret hole, shorten the life of the spinneret, increase costs.


2.2 UV Fibers


At present, domestic and international anti-UV fiber development are constantly accelerating, as a variety of textile fabric, UV protection must be of the nature of the fiber.


  3, anti-UV fiber and textile applications


In the fibers, yarns and fabrics to add a UV shielding agent and UV-made textile products, UV protective capacity significantly improved, and its UV-shielding rate of 90% or more generally, some even above 99%. At present, functional polyester with UV protection class, wool, hemp, silkworms and other downstream textile industry has become the first choice for more material.


In recent years, various companies abroad like Japan in the development of UV fibers, on the very significant achievements, Japanese companies manufacturing anti-UV fiber processing methods are generally used UV absorbers impregnated with the organic system or fiber mixes can scatter and absorb UV ceramic particle method. The former is mainly used for cotton fiber, the latter method is mainly used for polyester fiber. Usually mixed with ceramic particles before polymerization, and then uniformly dispersed polymer made of ceramic liquid, obtained by UV fiber spinning. More use of TiO2 ceramics department. For example, Coke Korea developed Esumo product mix that can absorb ultraviolet radiation, visible light and infrared reflectivity of ceramic micro-polyester powder. Table 1 as part of the Japanese company name and the development of anti-UV fiber trade name cases.