Prospects Analysis of Functional Fabric Layer Technology
Release Time:
2013-09-05 20:28
Source:
World Apparel Shoes and Hats Network
Protective performance does not hinder wearing comfort
In June this year, the German company Wacker launched a new type of silicone coating. Silicone coatings can produce water-repellent effects, so that textiles do not absorb too much moisture, preventing wetting effects and significant weight increase.
Because the coating forms a continuous film on the fabric surface, it greatly reduces the fabric's softness and breathability. Although it can resist rain and cold wind and protect the body, this coating cannot effectively dissipate the heat and moisture emitted by the human body, causing discomfort.
To address this drawback, technicians at the American Ambers Group developed a space phase change temperature-regulating fiber fleece yarn. This material is a high-tech space phase change temperature-regulating fiber introduced from NASA and used in space suits. A microcapsule coating containing phase change materials is applied to the fiber surface using high-tech methods. At normal body temperature, the material exists in both solid and liquid states. Garments made from space phase change temperature-regulating fleece yarn absorb heat when the body moves from a normal temperature environment to a higher temperature environment as the phase change material changes from solid to liquid; when moving to a lower temperature environment, the phase change material changes from liquid to solid, releasing heat, thereby slowing the dissipation of body surface temperature and maintaining comfort.
The latest sol-gel technology developed by the Research Institute of Nanyang Technological University in Singapore can also be used for garment coating treatment. This technology can produce a transparent coating effect containing metal oxide or silica films, providing an alternative method for depositing vapor-phase metal oxide layers. In sol-gel technology, nanosols of silica or other metal oxides are prepared through acidic or alkaline alcohol salts. The produced nanosols generally contain 3% to 20% metal oxides, and the diameter of nanoparticles is less than 10 nanometers.
In June this year, the German company Wacker launched a new type of silicone coating. Silicone coatings can produce water-repellent effects, so that textiles do not absorb too much moisture, preventing wetting effects and significant weight increase. This silicone can filter out most of the harmful ultraviolet rays in sunlight, has a soft hand feel, and can be used for high-performance sports and leisure fabrics. For example, it can be made into colored directional luminous coated fabrics. This is a novel functional coated fabric with a strong "eye-catching" effect, mainly used for labor safety protective clothing for personnel working at night or in dark places such as maritime rescue, transportation departments, municipal construction, mining operations, sanitation, and firefighting. It can also be used for ethnic clothing, shoes and hats, packaging rain gear, and more.
The magical effect of layering different materials
The American Conductive Composites Company developed a nickel chemical vapor deposition (CVD) coated nonwoven fabric. This development technology gives composite materials and polymer systems conductivity and electromagnetic interference (EMI) shielding solutions.
Although many varieties of fabric-to-fabric laminates have been developed, they still cannot meet current needs, so laminates of fabric with metal and film are also rapidly developing. Industrial coated textiles already occupy a large part of the industrial textile market, involving industries such as transportation, agriculture, construction, aerospace, and more.
The Japanese company Toray developed a new protective material composed of metal thin layers, resin layers, and fiber base cloth laminated together. Toray's representative Ito said that the metal in this protective material can be gold, silver, copper, or aluminum. The resin layer can be colored or colorless coatings of polymers such as polyethylene or polystyrene. The base can be woven or nonwoven fabric made of natural or synthetic fibers. The coating agent is applied on one or both sides of the fabric, and one side's coating contains carbon black conductive resin, forming a conductive resin layer. This laminated fabric reflects energy differently on both sides, providing excellent protection and camouflage against near-infrared, far-infrared, electromagnetic waves, and radar, making it especially suitable for military equipment use.
The American Conductive Composites Company also developed a nickel chemical vapor deposition (CVD) coated nonwoven fabric. This technology gives composite materials and polymer systems conductivity and electromagnetic interference (EMI) shielding solutions. Using nickel CVD technology, the coating can be applied to any substrate, including nonwoven fabrics and bonded nonwovens made from carbon fiber, aramid, glass fiber, and carbon nanomaterials. CVD coated nonwovens are lighter, thinner, and more conductive than nonwovens made with conductive fibers. Using chemical vapor deposition, the coated sheets have very low resistivity and are more cost-competitive, suitable for fire hoses, flexible roofing waterproof materials, wires and cables, composite cement bags, and more.
"CVD coated nonwovens have obvious performance advantages and can save customers a lot of costs. Our demand in existing and developing markets is continuously increasing. Our investments in capacity expansion and commercialization enhance our ability to provide competitive materials to the market, becoming a highlight of the company's recent development," said Hansen, president of the American Conductive Composites Company.
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