含氟聚芳醚酮具有优异的力学性能、热性能和较低的介电常数,广泛应用于电子电器、集成电路等方面。随着科技的快速发展,对聚合物的疏水性能和防污性能提出了更高的要求。通过4,4′-二氟二苯甲酮和六氟双酚A、双酚A共聚制得一系列氟含量不同的聚芳醚酮共聚物(FPAEK),将其与全氟辛基三乙氧硅烷改性SiC纳米颗粒(F-SiC)复合,制备了超疏水F-SiC/FPAEK复合涂层。结果表明:随着六氟双酚A比例的增加,即含氟量的增大,FPAEK的玻璃化转变温度由151.5℃升高至160.4℃,水接触角从63.3°增大到105°,拉伸强度由50.2MPa提高到65.1MPa;当F-SiC含量为1%(质量分数)时,复合涂层的超疏水性能最强,水接触角可达173°。该复合涂层具有极低的浸润性、吸水性以及优异的自清洁性能。
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 50.2MPa to 65.1MPa.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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