PMMA Sheet (Polymethyl Methacrylate) GUJPOL-S
GUJPOL-S is the trade name of Acrylic sheets manufactured by GSFC. GUJPOL-S sheets are manufactured from virgin MMA by cell casting process the best optical properties among all transparent plastics. GUJPOL-S has an excellent resistance to the effect of long exposure to sunlight, heat and weather
| Properties | Method (ASTM) | Value |
| Specific Gravity | D-792-64T | 1.18-1.20 |
| Light Transmittance total | D-1003-61 | 92% |
| Refractive index nD | D-542 | 1.49 |
| Tensile strength at rupture | D-638-64T | 570-760 kg/cm2 |
| Elongation at rupture | D-638-64T | 2-7 % |
| Compressive strength at yield | D-695-63T | 1260 kg/cm2 |
| Impact strength (charpy unnotched) | D-256-56 | 16 - 20 kg/cm2 |
| Izod milled notched | D-256-56 | 1.6-2.2kg-cm/cm |
| Rockwell hardness | D-785-62 | M 100 |
| Heat forming temperature | 140-180°C | |
| Heat distortion temp 2°C/min. at 264 p.s.i. | D-648-56 | 100°C |
| Maximum recommended continuous service temperature | 85°C | |
| Volume resistivity | D-257-61 | >1015 ohm-cm |
| Burning rate (flammability) | D-635-63 | 30 mm/min |
| Water absorption | D-570-63 | 0.3% |
| Residual monomer (Wt %) | 2.0 max. |
Application
- Light fitting and fixtures
- Street light covers
- Sanitary articles
- Sign-boards and novelties
- Helicopter canopies and other defence items
The outstanding features of Gujpol-S sheets are
- Light in weight; It has only half the weight of glass.
- Weather resistance; Longer period of resistance to sunlight and other weather conditions.
- Light absorption; Minimum in clear transparent sheets.
- Wide range; Transparent, translucent and opaque colours.
- High surface gloss.
- Easy formability and machinability.
- Low thermal conductivity; Almost equivalent to phenolics and only one sixth that of glass.
- Resistance to a wide range of chemicals insoluble in most inorganic chemicals but dissolves in ketones, esters, aromatic hydro carbons,chlorinated solvent etc.
Packing
- GUJPOL-S well masked with craft paper on both side and packed in standard packing in thick corrugated paper and bundled with straps