Polymethyl methacrylate (PMMA), commonly known as acrylic, is a transparent thermoplastic polymer valued for its optical clarity, rigidity, and weather resistance. It is widely used in applications requiring transparency combined with structural integrity, including automotive glazing, aircraft windows, lighting fixtures, medical devices, and protective barriers. PMMA is chosen over glass in many applications because it offers superior impact resistance, lower density, easier processing, and better UV stability, though it exhibits lower chemical resistance than some engineering thermoplastics.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 9.007 | ksi | — | ||
Elongation at Break(εf) | 26.03 | - | — | ||
Flexural Strength (MOR)(σf) | 2.447 | ksi | — | ||
Ultimate Tensile Strength(σUTS) | 2.571 | ksi | — | ||
Young's Modulus(E) | 76.38 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 215 | °F | — | ||
Melting Point / Solidus(Tm) | 357.9 | °F | — | ||
Maximum Service Temperature(Tmax) | 580.9 | °F | — | ||
Thermal Conductivity(k) | 0.1098 | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.933 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.457 | - | — |