Abstract
Many of the flameproof lighting fittings used in the large-scale coal-face lighting trials have enclosures made of the acrylic plastic polymethyl methacrylate.
This new material has characteristics which are very different from those of the toughened glasses more generally used in flameproof equipment, and it has been necessary to evaluate its relevant properties.
The research work described in this paper covers investigations of mechanical, thermal, optical and physical properties of methacrylate, and the effect of various factors on these properties.
Performance data have been obtained which should enable the drafting to commence of a new British Standard Specification governing the design of methacrylate enclosures for flameproof lighting fittings.
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References
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Literature covering the subject is very extensive, and the references listed here include only articles which the authors have themselves consulted during the research:—.
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