PMMA (Acrylic)
CNC Machining
Overview
PMMA (Polymethyl methacrylate), commonly known as acrylic, is a transparent thermoplastic with excellent optical clarity and weather resistance.
Mechanical Properties
| Tensile Strength | 72 MPa |
| Elongation | 5% |
| Hardness | 85-95 Shore D |
Physical Properties
| Density | 1,190 kg/m³ |
| Melting Point | 160°C |
| Thermal Conductivity | 0.19 W/m·K |
Applications
Displays
Signage
Aquariums
Lenses
Light guides
Protective barriers
Advantages
- Excellent transparency
- Weather resistant
- UV resistant
- Easy to machine
- Good surface finish
Limitations
- Brittle
- Scratches easily
- Flammable
- Limited chemical resistance
- Cracks under stress
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