Polybenzoxazine is a high-performance thermosetting polymer synthesized from benzoxazine monomers, offering excellent thermal stability and dimensional retention at elevated temperatures. It is widely used in aerospace composites, automotive structural components, electronics packaging, and adhesive formulations where superior heat resistance and mechanical integrity are required without the brittleness common to many competing thermosets. Engineers select this material for applications demanding long-term performance in thermally demanding environments, particularly where low thermal conductivity and high rigidity are beneficial for thermal management or dimensional control.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 7.582 | MPa | — | ||
Elongation at Break(εf) | 7.200 | - | — | ||
Flexural Strength (MOR)(σf) | 115.8 | MPa | — | ||
Hardness (Vickers)(HV) | 488.5 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 44.86 | MPa | — | ||
Young's Modulus(E) | 2.266 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 475.5 | K | — | ||
Melting Point / Solidus(Tm) | 326.7 | K | — | ||
Maximum Service Temperature(Tmax) | 659.9 | K | — | ||
Thermal Conductivity(k) | 10.17 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.700 | - | — |