Building Materials
The thermosetting plastic

Chars at 343°C
Becomes rigid when moulded at suitable pressure and temperature
All listed here
At 127°C to 177°C permanently set and further application of heat does not soften it

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Building Materials
Acrylic sheets

Are generally unaffected by most household detergents
Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
All of these
Possess the light transmission rate of 93%

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