![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
With the improvement of living standards, consumers are increasingly demanding apparel beauty, and the requirements for clothing colors are also changing from practical to novelty. With the help of modern high-tech technology, color-changing fiber materials have made the color or pattern of textiles change from regular “static†to looming “dynamic†effects with changes in light, temperature, and humidity, and have been rapidly developed in the textile field. Development and wide application.
1 Types of discoloration materials and discoloration mechanism
(1) Photosensitive materials
The photochromic material is a functional dye that can be discolored under the irradiation of ultraviolet rays or visible light, and can be reversed to the original color after the rays disappear. The photochromic materials mainly include silver chloride, silver bromide, stilbene, spirocycles, norbornadiene, fulgides, triphenylmethane derivatives, and salicylic acid aniline compounds. At present, photochromic materials have been developed to have four basic colors: purple, yellow, blue, and red. The initial structure of these four kinds of light-change materials is closed-loop type, that is, no color is printed on the fabric, and it becomes purple, yellow, blue, and red when irradiated with ultraviolet rays.
(2) Thermochromic materials
The reason why the thermochromic material can change color is that the discoloration body can cause a change in the internal structure, resulting in a change in color, and when the temperature is lowered, the color is restored. Relative to photosensitizing dyes, there have been many studies on thermal dyes at home and abroad. In particular, textile printing has achieved certain results. A series of thermal printing products have been introduced. For example, the TC series produced by Matsui Pigment Chemical Industry Co., Ltd. in Japan and the RT series produced in China are thermochromic products. In the course of taking fabrics, depending on the seasons and regions, indoor and outdoor temperatures are different, and present a variety of colors. At present, it is mainly the United Kingdom, Japan, and Taiwan in China that can produce color-changing coatings and master processing technologies.
(3) Humidity-sensitive color changing materials
The main reason for the discoloration of the humidity-sensitive color-changing material is that the humidity in the air causes the structure of the dye itself to change, so that the absorption spectrum of visible light in sunlight is changed, and the environmental humidity has a certain catalytic effect on the discoloration of the discoloration body. The main component of the humidity-sensitive color-change dye color printing paste is a color-changing cobalt double salt, and the color-changing body is firmly adhered to the fabric through an adhesive when applied. In order to make the discoloration sensitive, it is necessary to add a certain sensitizer to help the discoloration body to complete this process, and also add a certain chromophore to improve the vividness of the color of the color-changing fabric. If you combine the color-changing paints in the print paste, and use it for towels, bath towels, handkerchiefs, beachwear, etc., you can get a unique print pattern. For example, Seilkaduel Colour produced by Japan's Dainichi Seiki Chemical Industry Co., Ltd. is white when dry, and develops color and reversibility after wetting; SA Medium 9208 produced by Japan Imperial Color Company is white when it is dry, and transparent after being wetted. The pattern disappears.
2 The use of color-changing materials in textile and apparel
(1) Discolored clothing
The discolored clothing was first developed by the U.S. Department of Defense as a soldier's "invisible clothing," which can change color with the surrounding environment. After the 1980s, color-changing garments have been widely used in the civilian field. For example, Toho Manmade Fiber Co., Ltd. in Japan developed a color-changing garment called “Silk is Iraq†that changes color when irradiated with ultraviolet rays; The company has created a thermo-colored swimwear that changes its color at different temperatures. British material scientists have developed a liquid-crystal apparel fabric that has unpredictable colors in the 28 to 33°C range.
After entering the 21st century, the development of color-changing garments has made greater progress. For example, Japan has studied a photochromic dye that can “stain†synthetic fabrics with the colors of the surrounding scenes and “blend†people’s clothing in natural scenery. Chinese scientists have processed microcapsules of liquid crystal materials into inks that can be printed and dyed. They are applied to the surface of a black fiber. They change rapidly depending on body parts and changes in body temperature. China's trial-made see-ray color-changing acrylic yarn is woven. After the clothing material can change color with the light source change.
At present, the clothing brands that operate discolored apparel mainly include the United States Del sol, South Korea Bellini International Garment Group, South Korea Binfei Color Changing Garments, and South Korea Taiman Color Changing Garments. The discolored clothing on the Chinese market came out in 2004. It originated from South Korea's Binfei discoloration apparel brand under the Guangzhou Diya Fashion Co., Ltd. After successfully applying for a patent in 2011, it successfully entered the Chinese market.
(2) Brand-name clothing identification anti-counterfeiting technology
The "UV invisible text pattern", "temperature change recognition", and "feeling three-dimensional text" technologies can be used to identify authenticity through a bill validator or hand touch in a specific part of the trademark, and if necessary, "infrared detection" can be added, greatly increasing the technology. content.
3 The trend of color changing materials
Color-changing fiber materials are high-tech functional fibers that have been rapidly developed and are highly viable in recent years. They have high added value and high efficiency. With the continuous introduction of high-tech, the color-changing fibers will continue to develop and improve. Regarding color-changing dyes, there are not many color-changing dyes that are directly used in textile processing. The main reasons are the high price of dyes, unsatisfactory high temperature and light fastness, poor reusability and stability, and slow color fading. With the increasing demand for gentrification and individuation of garments and the increasing demand for functional finishing fabrics, the development of new color-changing fiber materials and color-changing dyes will have a good development prospect and a broad application space.
For more details, please pay attention to China Grey Fabrics ()
Jacket Fabric,Winter Jacket Fabric,Memory Jacket Fabric,Jacket Fabric For Outdoor
DEVON TEXTILE , https://www.devontex.com