PBMA (poly(butyl methacrylate)) is an acrylic polymer belonging to the methacrylate family, characterized by a butyl ester side chain that imparts flexibility and moderate stiffness. It is widely used in adhesives, coatings, and flexible films where a balance of rigidity and elongation is required, particularly in pressure-sensitive applications, automotive sealants, and construction materials. Engineers select PBMA over rigid acrylics when impact resistance and strain tolerance are critical; over elastomers when greater modulus and dimensional stability are needed.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 122.2 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.268 | ksi | — | ||
Young's Modulus(E) | 66.22 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 80.12 | °F | — | ||
Melting Point / Solidus(Tm) | 378.7 | °F | — | ||
Maximum Service Temperature(Tmax) | 577.7 | °F | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.481 | - | — |