  Bismaleimide (BMI) resin/ titania nanocomposites were synthesized from
allylated-phenolic modified bismaleimide resin and TiO2 via the sol-gel process
of tetrabutyltitanate (Ti(OnBu)4, TBT). These nanocomposite materials were
characterized by FT-IR, XRD, FE-SEM, TGA and DMA. It was found that the
nano-scale TiO2 particles were formed in the AP-BMI resin matrix, and the
average primary particle size of the dispersed phase in the nanocomposites was
less than 100nm, but the particle aggregates with bigger size existed. Obvious
improvements of glass transition temperature and heat resistance properties of
the AP-BMI resins were achieved by the introduction of nano-sized TiO2
inorganic phase, and the modulus of the material was also improved.
