摘要:
A method of producing a piping component seal member 22 having excellent chlorine resistance includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain surface-oxidized second carbon nanofibers. The second step includes mixing carbon black having an average particle diameter of 50 nm to 10 micrometers and the second carbon nanofibers into an ethylene-propylene rubber, and dispersing the carbon black and the second carbon nanofibers in the ethylene-propylene rubber by applying a shear force.
摘要:
A method of producing a carbon fiber composite material (50) includes a first step and a second step. The first step includes oxidizing first carbon nanofibers produced by a vapor growth method to obtain second carbon nanofibers (40) having an oxidized surface. The second step includes mixing the second carbon nanofibers (40) into an elastomer (30), and uniformly dispersing the carbon nanofibers (40) in the elastomer (30) by applying a shear force to obtain the carbon fiber composite material (50). The second carbon nanofibers (40) obtained by the first step have a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) of 2.6 to 4.6 atm%.
摘要:
A carbon fiber composite material 60 of the present invention includes: cell structures 300 with an elastomer 30 surrounded by a first carbon nanofiber 80 and an interface phase 30a thereof; cell structure assemblies 400 as assemblies of more than one of the cell structures 300; and tie structures 500 that join the cell structure assemblies 400 to each other. The tie structures 500 are formed by one or more first carbon nanofibers 80, one or more second carbon nanofibers 90, and the elastomer interface phase 30a surrounding the one or more first carbon nanofibers 80 and the one or more second carbon nanofibers 90.