Novel hydrophobic nanocomposites for natural gas pipelines coatings
Polyvinylidene fluoride nanocomposites were successfully prepared by solvent casting approach using graphene oxide and 3-aminopropyltriethoxysilane-graphene oxide as nanofillers.
Field emission scanning electron microscope revealed that the Polyvinylidene fluoride (PVDF) nanocomposites exhibited features of symmetric membrane.
Excellent protection in corrosive environments
Incorporation of 0.4 wt% of 3-aminopropyltriethoxysilane-graphene oxide (APTES-GO) into the PVDF matrix led to a significant decrease in wettability with water contact angle (CA) of 102° as compared to 62° for 0.4 wt% GO and 80° for neat PVDF. PVDF/APTES-GO has increased 2,350% in tensile modulus as compared to 75% increased in PVDF/GO nanocomposite. Carbon steel plate, which has similar properties with commercial carbon steel pipelines was used in the salt spray and acid immersion tests. PVDF/APTES-GO nanocomposite coating was found to exhibit excellent corrosion protection and good adhesion property than other coatings in corrosive environments.
The study is published in: Journal of Natural Gas Science and Engineering, Volume 42, June 2017, Pages 190–202
