Studies on thermodynamical properties in the Preparation of Low-Density pmp foams

Preparation of low-density poly (4-methyl-1-pentene) foam (pmp foam) is described. The thermal analysis method is utilized to measure on line the gelation of pmp polymer in the binary solvent/nonsolvent (durene/naphthalene) system. The range of gelation temperature is preliminarily determined. The influence of mixture system composition and the cooling rate during the making of foams is discussed. TG-DSC is applied to determine the thermal properties of low-density pmp foams. And the effect of density’s change on the thermal stability of foams has been studied. These thermal analysis data play a great role in improving the foam quality.