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Parkesine, the first member of the Celluloid class of compounds and considered the first man-made plastic, is patented by Alexander Parkes. [4] 1869: John Wesley Hyatt discovers a method to simplify the production of celluloid, making industrial production possible. 1872: PVC is accidentally synthesized in 1872 by German chemist Eugen Baumann ...
The first plastic made from synthetic components, it was developed by Leo Baekeland in Yonkers, New York, in 1907, and patented on December 7, 1909. [ 3 ] Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be moulded and then hardened into any shape.
The British used a plastic explosive during World War II as a demolition charge. The specific explosive, Composition C, was 88.3% RDX and 11.7% non-oily, non-explosive plasticizer. [8] The material was plastic between 0 and 40 °C (32–104 °F), but was brittle at colder temperatures and gummy at higher temperatures.
Plimpton set up Plimpton Engineering in Liverpool, England, to manufacture the components, the majority of which were made from Bakelite, a new synthetic plastic developed in the early 1900s. The sets were called "Bayko Light Construction Sets" (the term "Bayko Light" coming from the name "Bakelite") and went on sale nationally towards the end ...
After World War II there was an attempt to combine the best features of the C-ration and the K-ration into a new individual ration. Called the E-ration, it was for all intents and purposes the same canned C-ration, with the addition of some new components. In field testing, the bread component of the E-ration was found to be so unpalatable that ...
The Composition C family is a family of related US-specified plastic explosives consisting primarily of RDX. All can be moulded by hand for use in demolition work and packed by hand into shaped-charge devices. Variants have different proportions and plasticisers and include Composition C-1, Composition C-2, Composition C-3, and Composition C-4. [1]
In the United States, the jerrycan is defined by the Code of Federal Regulation, 49 CFR 171.8 as "a metal or plastic packaging of rectangular or polygonal cross-section". [16] As of 10 January 2009 [update] all portable fuel containers are required to conform to two new regulations: [ 17 ] [ failed verification ]
Plastic armour replaced the use of concrete slabs which, although expected to provide protection, were prone to cracking and breaking up when struck by armour-piercing bullets. Plastic armour was effective because the very hard particles would deflect bullets which would then lodge between the plastic armour and the steel backing plate.