Abstract
The foamed polypropylene (PP) with excellent thermal insulating property was prepared by using the nanosilica (SiO2) aerogels as nucleators, followed by mould pressing foam in cross-link. The weight ratio of SiO2/ PP, which was at the range of 0~ 2%, significantly affected the morphology and thermal insulating properties of the foamed PP. The results showed that the foamed PP can get excellent properties when the weight contents of SiO2aerogels was 1 %. The foamed PP with low density as 0.43 g/cm3and thermal conductivities at the range of 0.046~0.507 W.(m.K-1) was obtained by using this method.
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