Organic Glass

organic glass

[ȯr′gan·ik ′glas]
(materials)
An amorphous, solid, glasslike material made of transparent plastic.

Organic Glass

 

the technical name for transparent solid materials made from such organic polymers as polyacrylates, polystyrene, and polycarbonates and from the copolymers of vinyl chloride with methyl methacrylate. In industry, the term “organic glass” is usually understood as a sheet material produced by the block polymerization of methyl methacrylate.

The reaction is carried out in molds composed of sheets of silica glass, steel, or aluminum; elastic gaskets, the thickness of which determines the thickness of the sheet of organic glass, are placed between the sheets constituting the mold. To avoid defects in the organic glass caused by the significant shrinkage (~23 percent) of the reaction mass, set procedures must be followed. First, a prepolymer (a syrupy liquid with viscosity of 50–200 millinewtons-sec/m2, or centipoises) is obtained. Next, the prepolymer is poured into the mold and polymerized, or, instead, a solution of polymethyl methacrylate in a monomer (syrup solution) is polymerized in the mold. Depending on the intended use of the organic glass, plasticizers, dyes, opacifiers, stabilizers, and other components are added to the syrup or syrup solution. The mass is thoroughly mixed, placed in a vacuum, and filtered and is then poured into hermetically sealed molds, which are placed in chambers with circulating warm air or in a bath of warm water (isothermic conditions). After polymerization, the sheets of organic glass are removed from the molds and subjected to finishing operations.

Organic glass may be treated by vacuum or pneumatic forming and by stamping. It can be processed mechanically and can also be glued or welded. It is used as a structural material in aircraft, automotive vehicles, and ships. It is also used for enclosing hotbeds and for glazing greenhouses, domes, windows, and porches. Buildings are often decorated with organic glass, and the material is also used in fashioning instrument parts, prostheses, lenses and prisms used in optics, and pipes used in food processing.

Various brands of organic glass are produced in the USSR. Organic glass is called Plexiglas in the United States, the Federal Republic of Germany, and France, Perspex in Great Britain, and Clarex in Japan.

References in periodicals archive ?
Polyacrylates are often utilized in the production of paints and coatings, films, organic glass, adhesives, and impregnation chemicals for products such as leather, paper, fabrics, and wood.
Request for quotations : diplomas from organic glass
Experiment device was shown in Figure 1; we use the epoxy resin plate and organic glass plate of 30 cm x 10 cm x 0.5 cm while simulating the situation of coating disbonded, also we put a gasket of 0.5 mm thickness between them for regulating the thickness of simulation stripping gap.
The speaker is already being sold in Japan and the US and comes with an organic glass tube type tweeter and a 13W, 50mm woofer.
The Company initially focused its efforts on the production of isobutene, one of the most important petrochemical building blocks that can be converted into fuels, plastics, organic glass and elastomers.
Arev Petrosyan's mixed-media work "Emotions" (140x92cm) finds gold and silver leaves painted on organic glass. This work includes several red and black blotches, which seem to emerge from the ground.
Apart from to the above mentioned features, this 13.56MHz RFID reader antenna has other aspects, for instance, the shell material of organic glass and ABS, connecting RF cable SMA socket and so forth.
Launched in 2006 in Japan, this toilet perhaps epitomizes the Japanese obsession with cleanliness in personal hygiene, with the toilet being fully self-cleaning, of a new stain-resistant organic glass, coupled with an innovative flushing system, that also facilitates maintenance and saves water consumption.
At first we did what we could by removing things from my diet and then by adding organic glass bottled juices until we could get a juicer.
The system's unique 360-degree high fidelity organic glass speakers are considered the perfect solution for the Middle East's most prestigious hotels.
The new program will allow customers to purchase the firm's cleaning products--which include G-Wash Heavy Duty Hydrophobic Car Wash, G-Glass Organic Glass Cleaner, G-Tire Ultimate Tire Shine, G-Wheel Wheel Cleaner and G-Scent Odor Eliminator--in 55 gallon drums.