FEATURES
Polyethylenepolyamine (PEPA) is a cold curing hardener for epoxy resins and compositions. It is a mixture of ethylene amines.
APPLICATIONS
Polyethylenepolyamine is used as a curing agent for epoxy resins, for the production of ion exchange resins, additives, and for other purposes.
PHYSICAL AND CHEMICAL PROPERTIES
| Name of parameter and unit of measure | Standard |
| Appearance | From light yellow to dark brown color fluid without mechanical inclusions, with a sharp smell of ammonia. |
| A greenish color is allowed. Well soluble in water and alcohol, absorbs moisture from the air and carbon dioxide. | |
| Density, kg/m3 | 950-1050 |
| Mass fraction of total nitrogen,%, min. | 30.0 |
| Mass fraction of mineral impurities,%, max. | 0.2 |
| Mass fraction of water,%, max. | 2.0 |
POLYMERIZATION
Recommended curing conditions for a composition containing 10 parts by weight of PEPA and 100 parts by weight of epoxy resin ED-20:
- regular – 24 hat (20 – 25)⁰С;
- to impart improved physical and mechanical characteristics to products – 24 hat (20 – 25)⁰С + 5 hat 80⁰С.
Note: The exact amount of hardener and the viability of the composition are determined experimentally by the user, depending on the field of application, the weight of the fill, the curing mode, the presence and type of filler, etc.
SAFETY INFORMATION
Precautionary measures: storage in a closed container away from acids (anhydrides), oxidants, epichlorohydrin, water, sources of fire.
Use in the rooms equipped with flow-and-exhaust ventilation, use personal protective equipment, store in a tightly closed container in a dark place at an ambient temperature from+15 to +40°C.
PEPA is hygroscopic and, forming a solution with water, is partially hydrolyzed. Therefore, PEPA must be stored in air-tight containers.
GUARANTEED SHELF LIFE 2 years