Lapox® AH-657 by Atul is a modified aromatic amine based on 4,4’-diamino diphenyl methane available as dark brown viscous liquid. It acts as curing agent and partially cures epoxy resin at ambient temperature It can be made more flowable by heating at 70°C to 80°C. Basic liquid epoxy resin (EEW:190) cured with stoichiometric ratio of Lapox® AH-657 provides glass transition temperature (Tg) above 165°C along with excellent combination of mechanical, electrical
and thermal properties. Exhibits long pot life at ambient temperature and high chemical resistance. Provides stable ‘B’ stage. Suitable for processing by filament winding and pultrusion. Lapox® AH-657 is recommended for prepreg, electrical components, general engineering components and structural composites. It has a shelf life of one year.
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Lapox® AH-657 properties
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| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Amine Hydrogen Equivalent Weight (AHEW) | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Amine Number | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Color, Gardner | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Pot Life | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Recommended Ratio | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Solubility Properties | Element | Condition | Method |
|---|---|---|---|
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