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
The City Of London Phonograph and Gramophone Society The City Of London Phonograph and Gramophone Society The City Of London Phonograph and Gramophone Society (CLPGS) is an English society and registered charity dedicated to the research in all aspects of early recorded sound. Founded in 1919, the CLPGS is most likely the oldest society of its type in the world. The CLPGS was founded under the name "The Edison Society" in 1919, when Norman Hillyer and some members of the North London Phonograph and Gramophone Society decided that a group was needed within the City of London. The founding members agreed to approach Thomas Edison to ask if