%0 Conference Proceedings %T A Study on the role of Nano Size SiO2 on Thermal and Mechanical Properties of PU Foam %A Sajjadi, Seyed Abdolkarim %A Zebarjad, Seyed Mojtaba %A , %A Mahdavi, Soheila %J International Conference on Composites and Nanocomposites-ICNC 2011 %D 2011