| Property | Specification | Test Method | Units |
|---|---|---|---|
| Appearance | Solid (various shapes like flakes, pellets, or beads) or viscous liquid (depending on type) | Visual | – |
| Resin Type | Identification of the specific resin (e.g., epoxy resin, polyester resin, acrylic resin) | Varies (e.g., Spectroscopy) | – |
| Non-volatile Content | Percentage of solid resin material | Gravimetry | wt% |
| Viscosity (at 25°C) | Range (for liquid resins) | Viscometer | cP (centipoise) |
| Acid Value (mg KOH/g) | Measure of residual acidity | Titrimetry | mg KOH/g |
| Gel Time | Time taken for the resin to solidify (for thermosetting resins) | Rheometry | Minutes |
| Glass Transition Temperature (Tg) | Temperature at which the resin transitions from a glassy to a rubbery state | Differential Scanning Calorimetry (DSC) | °C |
| Color (Gardner scale) | Color measurement using a standardized scale | Colorimeter | – |
| Density (at 25°C) | Range | Density meter | g/mL |
| Solvent Solubility | Solubility in various solvents relevant to the application | Visual | – |
| Volatile Organic Content (VOC) | Percentage of volatile components released | Gas Chromatography (GC) | wt% |
| Residual Monomers | Maximum % of unreacted starting materials | Varies (e.g., GC) | wt% |
