Preparation and properties of fluorinated poly(aryl ether ketone)superhydrophobic composite coating
Fluorinated poly(aryl ether ketone)has excellent mechanical properties,thermal properties,and low dielectric constant,which are widely used in fields such as electronics,electrical appliances,integrated circuits and other fields.With the rapid development of technology,higher requirements for the hydrophobic and antifouling properties of polymers are proposed.In this study,a series of fluorinated poly(aryl ether ketone)copolymers(FPAEK)with different fluorine contents were prepared through the copolymerization of 4,4'-difluorobenzophenone,hexafluorobisphenol A and bisphenol A.These copolymers were then combined with perfluorooctyltriethoxysilane-modified SiC nanoparticles(F-SiC)to prepare superhydrophobic F-SiC/FPAEK composite coatings.It was found that as the proportion of hexafluorobisphenol A increased,i.e.the fluorine content increased,the glass transition temperature of FPAEK increased from 151.5℃ to 160.4℃,the water contact angle increased from 63.3° to 105°,and the tensile strength increased from 50.2 MPa to 65.1 MPa.When the amount of F-SiC was 1％(mass fraction),the superhydrophobic performance of the composite coating was the strongest,with a water contact angle of up to 173°.The above research results indicated that the composite coating had extremely low wettability,low water absorption,and excellent self-cleaning performance.
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