As far as the present authors are concerned, systematic
investigations of the effects of surfactant on
various properties of RPUF are sparse, perhaps
except those blown with water [7, 22].We synthesized
various types of RPUFs from CMDI and
polypropylene glycols (PPGs) with an environmentally
friendly physical blowing agent, viz. HFC
365mfc (CF3CH2CF2CH3), with a potential target
application of insulation panel of LNG cargo where
high compression strength as well as thermal insulation
is highly desired. The effects of silicon surfactant
concentration on the performances of the
foams have been extensively analyzed in terms of
reactivity, cell morphology, surface tension, and
mechanical and thermal properties of the foams.