Carbon fiber reinforced polymer as epoxy, but other thermoset or thermoplastic polymers, such as polyester, vinyl ester, or nylon, are sometimes used. The composite material may contain aramid (e.g. Kevlar, Twaron), ultra-high-molecular-weight polyethylene (UHMWPE), aluminium, or glass fibers in addition to carbon fibers. The properties of the final CFRP product can also be affected by the type of additives introduced to the binding matrix (resin). The most common additive is silica, but other additives such as rubber and carbon nanotubes can be used. The material is also referred to as "graphite-reinforced polymer" or "graphite fiber-reinforced polymer" ("GFRP" is less common, as it clashes with
Fonotipia Records Fonotipia Records Fonotipia Records, or Dischi Fonotipia, was an Italian gramophone record label established in 1904 with a charter to record the art of leading opera singers and some other celebrity musicians, chiefly violinists. Fonotipia continued to operate into the electrical recording era, which commenced in 1925–26, by which time the company had been absorbed into Odeon records. The records made by Fonotipia are prized by collectors and musicologists for their high technical quality, and for the high artistic merit and interest of much of what was captured for posterity. The Fonotipia catalogues were reconstructed, so far as then possible,