Abstract: The impacts of alcoholysis reagent (glycol and diethylene glycol) and glycol on renewable polyurethane foam (PUF) were studied. The results showed that the alcoholysis performance of glycol is better than that of diethylene glycol and viscosity of renewable PUF decreased with increase of glycol dose. Reticulated polyurethane foam composite was prepared by lignosulphonate (LS) and renewable PUF. Its microstructure, thermal conductivity as well as compressive property were studied. The thermal conductivity of the polyurethane foam composite was going up with the increased dosage of renewable PUF, which is attributed to the increase of hole-opening rate of film cell bodies with the increase of renewable PUF, so that its thermal insulating properties decreased. Compressive strength (σ₁₀) was from 38.4 to 544kPa. The results of scanning electron microscopy (SEM) showed that the increased dosage of renewable PUF had a great effect on the thickness of cell body skeleton and cell body structure.

Key words: polyurethane foam, cell bodies, lignosulphonate, renewable polyurethane foam, compressive property