PPS finds new role in coex fuel pipes. (Keeping up with Materials).Total Containment, Inc. of Oaks, Pa., recently improved the fuel-barrier properties of its plastic fuel pipes by adding an inner layer of Fortron PPS (Packets Per Second) The measurement of activity in a local area network (LAN). In LANs such as Ethernet, Token Ring and FDDI, as well as the Internet, data is broken up and transmitted in packets (frames), each with a source and destination address. from Ticona of Summit, N.J. Ticona created a new PPS grade that is flexible and allows for coextrusion, which is rarely done with PPS. Total Containment's multi-layer piping can handle gasoline, diesel, liquid petroleum gas (LPG LPG: see liquefied petroleum gas. 1. LPG - Linguaggio Procedure Grafiche (Italian for "Graphical Procedures Language"). dott. Gabriele Selmi. Roughly a cross between Fortran and APL, with graphical-oriented extensions and several peculiarities. ), and other fuels. The PPS barrier layer is said to have significantly lower permeability than nylon, PVDF PVDF polyvinylidene difluoride , and other fuel-pipe lining materials. A proprietary additive package in the PPS overcomes the polymer's inertness so it adheres to the tie layer that bonds the PPS to an adjacent polyethylene layer. The additive package also makes the PPS less rigid so it can follow sharp curves without cracking. The PPS has a tensile elongation of 25% and flexural flexural pertaining to the flexure of a joint. flexural deformity fixation of joints in flexion. In the newborn called contracted calves or foals. modulus of 310,000 psi vs. about 3% elongation and 600,000 psi modulus for typical unfilled Fortron PPS. Tel: (800) 833-4882, www.ticona.com |
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