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The interplay of both these factors determines the resulting effect on material mechanical properties; cross-linking is thought to dominate for neoprene. [12] [14] As neoprene is used to make electric cable jackets in nuclear power plants, the effect of gamma radiation on the mechanical properties of neoprene has also been investigated. Chain ...
Polymers are simply chains of molecules that can be linked together. Rubber is one of the few naturally occurring polymers and prized for its high stretch ratio, resilience, and water-proof properties. Other examples of natural polymers include tortoise shell, amber, and animal horn. [46]
[14] [15] [16] Only one fatality as a result of chloroprene intoxication has been recorded which was a result of cleaning a container used for chloroprene. [ 16 ] The primary occupational concern for chloroprene is limited to the facilities producing chloroprene and using chloroprene to produce the synthetic rubber, polychloroprene.
A material property is an intensive property of a material, i.e., a physical property or chemical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.
Examples include silicone rubber via room temperature vulcanizing and chloroprene rubber (neoprene) using metal oxides. Vulcanization can be defined as the curing of elastomers , with the terms 'vulcanization' and 'curing' sometimes used interchangeably in this context.
Rubber-like solids with elastic properties are called elastomers. Polymer chains are held together in these materials by relatively weak intermolecular bonds, which permit the polymers to stretch in response to macroscopic stresses. (A) is an unstressed polymer; (B) is the same polymer under stress.
EPDM has good low-temperature properties, with elastic properties to temperatures as low as −40 °C depending on the grade and the formulation. A roll of EPDM flashing with fleece on the back, used for waterproofing roofs. EPDM is stable towards fireproof hydraulic fluids, ketones, hot and cold water, and alkalis.
Polymer chemistry is a sub-discipline of chemistry that focuses on the structures, chemical synthesis, and chemical and physical properties of polymers and macromolecules. The principles and methods used within polymer chemistry are also applicable through a wide range of other chemistry sub-disciplines like organic chemistry , analytical ...