Perspex, which is sold in the USA as Plexiglas, is the name given to the polymer of methyl methacrylate; the material is thermoplastic, and transparent. It also is sold by the names "Acrylite" and "Lucite" and is commonly called Acrylic Glass.
It is often used in place of glass, though its softness leads to its being easily scratched. The material has a good degree of compatibilty with human tissue, and can be used for replacement lenses in the eye when the original
lens has been removed in the treatment of cataracts. Hard contact lenses
are frequently made of this material; soft contact lenses are often made of a related polymer, in which the acrylate monomers are used that contain one or more hydroxy groups to make them hydrophilic.
Perspex can be joined using cyanoacrylate cement (so-called "Superglue"), or by using liquid Acetone to dissolve the plastic at the join which then fuses and sets, forming an almost invisible weld. Perspex can also be easily polished, by which method cut edges (which turn opaque) can be returned to transparency.
We are urgently looking for a manufacturer of plexglas lenses of diameter 37mm, R= 68. Drawin at disposal. OPTOMA 36, rte d'Allaman P.O.Box 99 CH - 1163 Etoy Tél. +41 21 807 13 33 FAX +41 21 807 13 34
read more » messages 1
- last message on March 17th, 2009
