Fibers fluoroplastics

Figure 1.2 A conceptual figure for the transport of light through fluoroplastic fiber.

In general, rigid plastics are superior to elastomers in radiation resistance but are inferior to metals and ceramics. Examples of materials, which will respond satisfactorily in the range of 10 and 10 erg per gram, are fluoroplastics, glass fiber-filled phenolics, certain epoxies, polyurethane, polystyrene, mineral-filled polyesters, silicone, and fiirane resins. The next group of resins in order of radiation resistance includes polyethylene, melamine, urea formaldehyde resins, unfilled phenolic, and silicone resins. Those materials, which have poor radiation resistance, include methyl methacrylate, imfilled polyesters, cellulosics, polyamides, and fluorocarbons (Tables 9.16 and 9.17). 

Tefzel is a rugged thermoplastic with an outstanding balance of properties. It can be reinforced with carbon or glass fibers, being the first fluoroplastic that can be reinforced, not merely filled. Because the resin will bond to the fibers, strength, stiffness, creep resistance, heat distortion temperature, and dimer sional stability are enhanced. 

Ehist can be removed readily from filter fabrics made of fluoroplastic fibers [324-326]. 

Pruett, K. M. 2000. Chemical Resistance Guide for Plastics A Guide to Chemical Resistance of Engineering Thermoplastics, Fluoroplastics, Fibers, and Thermoset Resins. La Jolla, CA Compass. 

Fuel and vapor tubes are typically extruded from fluoroplastics such as Tefizel EPTF inner layer and a nylon outer layer. The tubes are temperature resistant above 225°F (107°C) to fuels, fuel vapor permeation, and automotive chemicals, and the retain flexibility above 300°F (149°C). A fuel defivery tube can be constructed with Viton fluoroelas-tomer inner layer, Vamac ethylene acrylic synthetic rubber tie layer, and Kevlar fiber reinforced Teflon FEP middle layer. Flnoroelastomers have high-temperature, fuel-resistant properties that make them ideal for underhood and chassis fuel defivery components. ... 

Fibers of fluoroplastics have been made and oriented to impart strength to themf ] and enhance their load-bearing capability at elevated temperatures. Perfluoroplastics can be spun into multifilament fibers by extrusion. Vita, et have reported fabrica-... 

---