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Alternately, resin casting may be accomplished with a resin plus a nearly equal amount of a "hardener" liquid (as in many epoxy resin or polyester resin systems), which functionally contains a second polymer, for use in forming a final product plastic which is a copolymer. Copolymers contain two different alternating chemical entities in the ...
Epoxy granite, also known as synthetic granite, [1] is a polymer matrix composite and is a mixture of epoxy and granite commonly used as an alternative material for machine tool bases. Epoxy granite is used instead of cast iron and steel for improved vibration damping , longer tool life, and lower assembly cost, and thus better properties for ...
Casting materials are usually metals or various time setting materials that cure after mixing two or more components together; examples are epoxy, concrete, plaster and clay. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods.
Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also collectively called epoxy. [1] The IUPAC name for an epoxide group is an oxirane.
The mold may be part of the finished article and may provide shielding or heat dissipating functions in addition to acting as a mold. When the mold is removed the potted assembly is described as cast. [4] As an alternative, many circuit board assembly houses coat assemblies with a layer of transparent conformal coating rather than potting. [5]
A casting system can be combined with many different production steps within a production line. So casting becomes an integrated part of the whole manufacturing of a part. To account for the delicate requirements of dispensing in all production steps in the best way, the most significant manufacturers are active in automation as well.
Polymer concrete in the form of epoxy granite is becoming more widely used in the construction of machine tool bases (such as mills and metal lathes) in place of cast iron due to its superior mechanical properties and a high chemical resistance.
Since 2000, however, epoxy and polyurethane resins are used in interiors as well, mainly in Western Europe. Synthetic casting "resin" for embedding display objects in Plexiglas/Lucite is simply methyl methacrylate liquid, into which a polymerization catalyst is added and mixed, causing it to "set" (polymerize). The polymerization creates a ...
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