| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.18 g/cc | 1.18 g/cc | ASTM D792 |
| Water Absorption | 0.40 % | 0.40 % | weight gain after 24 hr. immersion; ASTM D570 |
| Linear Mold Shrinkage | 0.0030 - 0.0060 cm/cm | 0.0030 - 0.0060 in/in | ASTM D955 |
| Melt Flow | 3.0 g/10 min @Load 3.80 kg, Temperature 230 °C |
3.0 g/10 min @Load 8.38 lb, Temperature 446 °F |
ASTM D1238 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Rockwell M | 84 | 84 | ASTM D785 |
| Tensile Strength, Ultimate | 63.4 MPa | 9200 psi | ASTM D638 |
| Tensile Modulus | 2.83 GPa | 410 ksi | ASTM D638 |
| Flexural Strength | <= 96.5 MPa | <= 14000 psi | ASTM D790 |
| Flexural Modulus | 2.90 GPa | 420 ksi | ASTM D790 |
| Izod Impact, Notched | 0.214 J/cm | 0.400 ft-lb/in | ASTM D256 |
| Thermal Properties | Metric | English | Comments |
| Thermal Conductivity | 0.187 W/m-K | 1.30 BTU-in/hr-ft²-°F | ASTM C177 |
| Deflection Temperature at 0.46 MPa (66 psi) | 103 °C | 217 °F | annealed; ASTM D648 |
| Deflection Temperature at 1.8 MPa (264 psi) | 97.2 °C | 207 °F | annealed; ASTM D648 |
| Vicat Softening Point | 95.0 °C | 203 °F | 50°C/hr; 10N; ASTM D1525 |
| 102 °C | 216 °F | 50°C/hr; 50N; ASTM D1525 | |
| Optical Properties | Metric | English | Comments |
| Refractive Index | 1.49 @Temperature 22.8 °C |
1.49 @Temperature 73.0 °F |
ND; ASTM D542 |
| Haze | <= 2.0 % @Thickness 3.17 mm |
<= 2.0 % @Thickness 0.125 in |
ASTM D1003 |
| Transmission, Visible | 91 % @Thickness 3.17 mm |
91 % @Thickness 0.125 in |
ASTM D1003 |
PMMA的用途：
PMMA具有质轻、价廉，易於成型等优点。溶于有机溶剂如苯甲醚等，可以形成良好的薄膜和良好的介电性能，可以作为有机场效应管的介质层。
它的成型方法有浇铸，射出成型，机械加工、热成型等。尤其是射出成型，可以大批量生产，制程简单，成本低。因此，它的应用日趋广泛，目前它广泛用于仪器仪表零件、汽车车灯、光学镜片、透明管道等。
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