Table 1 Melting point and self ignition temperatures for typical material of sunglasses frames and lenses
Material | Melting point temperature (°C) | Self-ignition temperature (°C) |
|---|---|---|
Polyamides (or nylons) | 172–260 | 424–532 [5] |
Polycarbonates | 140–150 [8] | 580 [8] |
Cellulose acetate | 49–121 [8] | |
Cellulose propionate acetate | 188–210 [7] | 432 [7] |
Cellulose acetate butyrate | 127–240 [7] | – |
ABS—acrylonitrile butadiene styrene | 88–25 [8] | 416 [8] |
Cellulose nitrate (or nitrocellulose) | 160 [9] | 141 [6] |
CR-39 (allyl diglycol carbonate) | 129 [10] | 443 [10] |
PMMA—polymethyl methacrylate (acrylic) | 91–125 [8] | 452–460 [6] |