Hot cure hardener supplied by Global Optimals is the essential curing agent for epoxy composites that require rapid strength development at 80‑200 °C. The hardener belongs to the class of anionic amine systems, typically formulated with either a cyclic anhydride (such as hexahydroxyethyl‑amine anhydride) or an aromatic aminosulfonate, which provides high reactivity toward epoxy groups at moderately elevated temperatures. During cure the epoxy ring opens and forms covalent bonds, creating a dense three‑dimensional network that raises the glass transition temperature to Tg ≥ 120 °C and imparts excellent resistance to hydrolysis, acids, and bases. In practice the hardener is often blended with viscosity modifiers, accelerators (e.g., diethylamine) or flexible epoxy resins to fine‑tune pot life and improve adhesion to diverse substrates. Primary industrial applications include electrical‑grade compounds, where low dielectric loss and long‑term thermal stability are critical; pipe and profile extrusion for composite structures that demand high flexural and impact strength; and winding materials for cable assemblies, which benefit from fast polymerisation and solvent durability. When used with carbon‑fiber reinforced composites, the hardener delivers uniform cure across the fiber lay‑up and minimizes internal stresses and shrinkage, a prerequisite for aerospace and high‑performance automotive components. Typical formulation ratios range from 1 part hardener to 2–3 parts epoxy resin by weight, adjusted according to desired cure speed and final mechanical properties. The material should be stored in a dry, cool environment (5 °C‑25 °C) in its original sealed container, protected from moisture and direct sunlight. During handling wear appropriate gloves and safety glasses and ensure adequate ventilation. Proper mixing and temperature control are essential to achieve the intended cross‑linked structure and to avoid premature gelation.
| Тип | Ангидрид/ароматический амин |
| Темп. отверждения | 80–200°C |
| Tg | 120–180°C |
Drums 25 kg / Barrels 200 kg
The hardener should be stored in a dry, well-ventilated room at temperatures between +15 °C and +30 °C, protected from direct sunlight and moisture. Shelf life is typically 12–24 months provided packaging integrity is maintained; signs of condensation or changes in appearance may indicate loss of product properties. When handling, protective gloves and goggles should be worn, avoiding contact with skin and respiratory tract. Packaging in a metal drum or sealed container must remain undamaged to prevent ingress of moisture and contaminants.
