Properties of Urea Formaldehyde (UF)
Urea formaldehyde (UF) is a thermosetting resin formed by the chemical reaction of urea and formaldehyde. Widely used as an adhesive and binding agent, it plays a crucial role in manufacturing materials such as particleboard, plywood, and laminates, offering excellent strength and stability for diverse industrial applications.
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The following table provides a comprehensive list of urea formaldehyde (UF) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Category | Thermoset |
| Density | 1470 - 1520 kg/m3 |
| Water Absorption | 0.5 %wt/day |
| Mechanical Properties | Metric |
| Ultimate Tensile Strength | 30 MPa |
| Young’s Modulus (E) | 9 GPa |
| Thermal Properties | Metric |
| Thermal Conductivity | 0.30 - 0.42 W/m·K |
| Specific Heat Capacity (Cp) | 1200 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.2×10-5 - 9.6×10-5 1/°C |
| Electrical Properties | Metric |
| Dielectric Field Strength (Ed) | 120 - 160 kV/cm |
| Optical Properties | Metric |
| Refractive Index (589 nm) | 1.55 |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)