Abstract:Nano-TiO2 was dispersed uniformly in epoxy resin by the mixed process and epoxy/ nano-TiO2 resin
were manufactured by casting process. The NOL rings and Ф150 mm standard pressure vessels of T700 carbon fiber/ epoxy
and T700 carbon fiber/ epoxy/ nano-TiO2 composites were manufactured by wet-winding. The nano-TiO2effect on the
properties of epoxy casting resins and T700 carbon fiber/ epoxy composites were also studied. The results show that the
addition of nano-TiO2is reinforced differently on epoxy resins and T700 carbon fiber/ epoxy composites. Comparing with
the epoxy without nano-TiO2, its tension strength and flexural strength of epoxy/ nano-TiO2 system are increased respectively
9.2% and 9.8%. The interlaminar shear strength of T700 carbon fiber/ epoxy/ nano-TiO2 NOL rings reached 87． 7
MPa, increasing 22.3%. The vessel performance factor of Ф150 mm pressure vessels are 43. 4 km, and the strength
transfer rate of T700 carbon fiber is 94.3%. Comparing with the composites without nano-TiO2, its vessel performance
factor and strength transfer rate of T700 carbon fiber are increased respectively 9.9% and 3.3%.
