An experimental study is presented on the thermal conductivity of a se
ries of physically crosslinked polyolefin foams with different chemica
l compositions, based on LDPE (low density polyethylene), PP (polyprop
ylene), EVA (ethylene vinyl acetate), and closed cell structure. The a
ims of this work are to discover the relationships between the mechani
sms for thermal transmission, the morphology of the foams and the dete
rmination of the variables which may modify the insulating properties
of these materials so that they can be optimised. (C) 1997 Elsevier Sc
ience Ltd.