Mechanical properties of Epoxy-polyurethane polymer blends

Abstract EN

Binary blends have been formed for epoxy (EP) and polyurethane (PU), the concentration was chosen to give 4 compatible thermoset-thermoset blends (80-20, 60-40, 40-60, 20-80) EP-PU.

Samples were cast as sheet of 4mm thickness prepared from simultaneous mixing of the two constituents in the required percentage.

Standard impact samples (ISO 179) were prepared and mechanically tested by Charpy test either as prepared or after being heat treated, aged at 75c° for 3, 6, and 9 hrs.

The results showed that the increment and i or decrement of impact toughness depend on blend concentration, and thermal aging to some polymer blends.

In addition to the impact tests, the morphology by scanning electron microcopy was carried out to investigate whether these blends are classified as compatible blends.

The aim of this research is to product a new polymer material with new properties.

Especially the mechanical and physical properties.