(Textile Knowledge) Application of Teflon in Fabric Protection
2015-10-16
Quality of a fabric for clothing depends on a great extent on aesthetic, durability and comfort aspect. While aesthetic & comfort performance is a desirable in clothing, utility is the key requirement in fabric. New technologies are having dramatic effect on textiles, retailers are trying to distinguish their products from others, & to give a value added feature to their fashions by means of technical fibers & finishing. For example, manufacturers are starting to treat their clothing with Teflon fabric protector.
What is Teflon?
Generally, the coating that makes cooking utensils non-sticky is called Teflon. Scientifically, it is trade name for a solid, chemically inert polymer of Tetrafluroethylene (CF2CF2) - It is colorless. Odorless, flouroplastic which has m.w. of 30000, it stable up to 300C .The following properties are typical of PTFE.
Some Facts
> PTFE fluoropolymer resin is listed in the Guinness Book of World Records as the worlds most slippery substance. So, it is a non-stick substance.> It is resistant to most of the chemicals like NH3, H2So4, HCL, Acetic Acid, Chlorine, and Ozone. The only chemicals known to affect their coating are molten alkali metals & highly reactive fluorinating agents.
> Very few solid substances will permanently adhere to a Teflon coating, while tacky materials may show some adhesion, & almost all substance release easily.
> It has excellent electrical properties making it suitable for use as an insulator in cables & connector assemblies.
> It has been involved in the U.S. Space Programme. The moon module included several applications of Teflon including space suits & blankets, heat shields & insulation.
> Light bulbs are shatter proof due to a Teflon coating.
> It is used to protect the statue of liberty.
Uses of Teflon
It is used in computer chip manufacturing because it is very Inert & non reactive. It is used in filters to keep air clean, in chip carriers. As a fiber, it is used to manufacture socks that reduce friction & blisters. These are useful for diabetics, people with circulatory problems, obesity & sensitive skin. It is used to insulate data communication cables, due to its outstanding heat & chemical resistance. Teflon industrial coatings can be used on carbon steel, stainless steel, aluminum, steel alloys, brass & magnesium, as well as non-metallic such as glass, fiberglass, rubber & plastics.
The versatility of these coatings allows almost unlimited application to a wide variety of products like wiper blades & refills, belts, nail enamels, bicycle lubricants. It is hydrophobic & oleophileic. So, as a liquid Teflon repels water & stains for the apparel, home furnishing. It is used as apparel & accessory fabrics, upholstery, bedding & home fabric, technical & outdoor fabrics.
Teflon Fabric Protector
Consumers demand performance benefits in almost all of the products they purchase. And stain protection is one of the top desired performance benefits in apparel. Unlike traditional stain protection the new Teflon fabric protector provides superior washout of dirt & stains, eliminating the worry of permanent, costly damage. It prevents soil deposition during laundering, preserving fabrics looks. Since it is hydrophilic, it provides moisture management means moisture can be absorbed quickly & moisture wicking is there. In addition, it works all without changing the weight, look, feel, color, breathability of fabric.
How it works
Teflon fabric protector provides a invisible molecular barrier around the fiber this barrier lowers the critical surface tension of a fabric enabling it to repel liquids, either bead up & roll off or easily wiped & dry soil can be brushed off. Because it is built in, Teflon retains its durability after dozens of laundering & cleaning, so, when soiled & stained garments are put into the wash after heavy use
> The soil is held in the wash liquid & is not redoposited on the fabric.
> Moisture moves through the fabric to keep cool & dry.
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