Abstract:The interfacial properties and pressure vessel performance of PBO fiber and T700 carbon fiber hybrid
composites were studied in this paper. The effects of hybrid ratio on interfacial adhesion properties and water absorp鄄
tion of hybrid composites were investigated by interlaminar shear strength (ILSS) and water absorption measurements.
Standard 囟150 mm pressure vessels were prepared by PBO fiber and T700 carbon fiber hybrid composites. The water
explosion and axial bearing tests of 椎150 mm pressure vessels were conducted. The results indicate that the ILSS of
hybrid composites went up with hybrid ratio increasing, the interfacial adhesion properties of hybrid composites saw
little improvement as T700 carbon fiber content was lower. The water absorption values of hybrid composites were be鄄
tween PBO and T700 fiber reinforced composites, which matches the mixture law nearly, and the number of interface
had remarkable effect on water absorption of hybrid composites. The PV/ W of 囟150 mm pressure vessels prepared by
hybrid composites decreased as hybrid ratio increasing. The axial bearing property of PBO fiber reinforced composites
was improved by 31% with hybrid technology.
