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Acrylic glass
| Acrylic glass | |
|---|---|
 | |
| IUPAC name | |
| Other names | poly(methyl methacrylate) (PMMA) methyl methacrylate resin |
| Identifiers | |
| CAS number | 9011-14-7 |
| SMILES | |
| Properties | |
| Molecular formula | (C5O2H8)n |
| Molar mass | varies |
| Density | 1.19 g/cm³ |
| Melting point | 130–140 °C (265–285 °F) |
| Boiling point | 200.0 °C (392 °F) |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references | |
Poly(methyl methacrylate) (PMMA) poly(methyl 2-methylpropenoate) is a thermoplastic and transparent plastic. Chemically, it is the synthetic polymer of methyl methacrylate. It is sold by the trade names Plexiglas, Vitroflex, Limacryl, R-Cast, Per-Clax, Perspex, Plazcryl, Acrylex, Acrylite, Acrylplast, Altuglas, Polycast, Oroglass, Optix and Lucite and is commonly called acrylic glass, simply acrylic, perspex or plexiglas. Acrylic, or acrylic fiber, can also refer to polymers or copolymers containing polyacrylonitrile. The material was developed in 1928 in various laboratories and was brought to market in 1933 by Rohm and Haas Company.
PMMA is often used as an alternative to glass, and in competition with polycarbonate (PC). It is often preferred because of its moderate properties, easy handling and processing, and low cost, but behaves in a brittle manner when loaded, especially under an impact force. To produce 1 kg of PMMA, about 2 kg of petroleum is needed. PMMA ignites at 460 °C and burns completely to form only carbon dioxide and water.[citation needed]
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3M Speedglas 9100 Welding Helmet Informational Video - Helmet Information
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