Matrix Materials for the Fabrication of Bulk and Nanocomposites

The BMl-modified epoxy resins achieved by either physical blending or chemical reactions have been reported to show good flame retardant properties [26]. However, bismaleimide has poor solubihty and processabflity. Hence, phosphorus moiety is incorporated into BMI, which acts as a flame retardant and plasticizer [27]. In this work, we made an attempt 

The surface morphology of unmodified epoxy, PBMI-modified epoxy, siliconized epoxy and sificonized epoxy containing PBMI was studied by scanning electron microscopy (SEM). All properties with relevance to thermo-mechanical stability (DMTA) and flame retardancy (LOI) of the cured resin systems were evaluated. 

Epoxy resin was mixed with a fixed amount (10%) of DGTPDMS at 90°C for 15 min with constant stirring. Then a calculated amount (0, 5 and 10 wt%) of PBMI was dissolved in siliconized epoxy system at 125 C under vigorous stirring. After complete dissolution, a stoichiometric amount of DDM and DDS were added separately and the agitation was continued at 90°C until a homogenous mixture was obtained. The products (DDM and DDS cured samples) were subjected to vacuum to remove the trapped 

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