Effects of spinning process on carbon fiber wet winding composite strength transformation ratio

Through the experimental study of the surface state of different spinning process polyacrylonitrile-based carbon fiber and NOL ring and φ150 mm pressure vessels wound with the different spinning process polyacrylonitrile-based carbon fiber reinforced composite, the effects of spinning process on wet winding composite polyacrylonitrile-based carbon fiber strength transformation ratio were analyzed. The results show that the circumferential strength transformation ratio of φ150 mm pressure vessels wound with the dry jet-wet spinning carbon fiber is increased by 11.9%~15.4% compared with that of wet spinning carbon fiber. The interlaminar shear strength of NOL rings wound with the dry jet-wet spinning carbon fiber is increased by 7.4~34.1 MPa compared with that of wet spinning carbon fiber. Therefore, the dry jet-wet spinning carbon fiber can be used in solid motor winding shell, pressure vessels and other tensile load bearing field, which can give full play to its strength. The wet spinning carbon fiber is well integrated with the resin matrix, which is beneficial for load transfer and can be used in compression shear complex load bearing field.