PREPARATION AND CHARACTERIZATION OF POLYURETHANE/MELAM INE INTERPENETRATING POLYMER NETWORK FOAMS

Shanshan Yao, Liu Feng, Fanlong Jin

ABSTRACT:Polyurethane (PU)/melamine formaldehyde resin (MF) interpenetrating polymer network (IPN) foams were prepared by synchronous polymerization with MF and PU as raw materials. The effects of PU content on the apparent density, mechanical properties, and morphology of MF/PU IPN foams were investigated. The results showed that the apparent density and compressive strength of PU/MF IPN foams increased significantly with increasing PU content. Scanning electron microscope (SEM) showed that the pore structure of the foams changed little when the PU content was increased.

Keywords:melamine, polyurethane, interpenetrating polymer networks, apparent density, mechanical properties.