Abstract
In this article, a series of novel phenolic resin modified with cardanol were synthesized. The influence of reaction condition and cardanol content on the structure and properties of phenolic resin was evaluated. The nanocomposite phenolic foam was then prepared by infusing the organo-modified montmorillonite (OMMT) in the synthesis step of cardanol phenolic resin to produce nanocomposite phenolic foams. These phenolic foams were characterized by FTIR, XRD, SEM and TGA. And the mechanical properties and fire performance of these nanocomposite foams were also measured. The results showed that the cardanol component could reduce the crosslink density of phenolic foam and thus improve the mechanical properties; the OMMT platelets were 3~10μm in diameter and 40~50nm in thick. These platelets can exfoliated and dispersed well in the nanocomposite due to the hydrogen-bonding between organo-modifier and phenolic matrix and improve the thermal stability, fire resistance and also the mechanical properties of nanocomposite foam.
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