Preparation of PTFE-TIO2-GO/EP superhydrophobic costing and its performance study

For many years, the issue of microbial adhesion has presented difficulties in both daily life and business. In this paper, superhydrophobic coatings were produced by adding epoxy resin (EP), butyl acetate, titanium dioxide (TiO2) nanoparticles, polytetrafluoroethylene micropowder (PTFE), and graphene oxide (GO) sequentially into a mug and mixing well, and then modifying the microscopic particles by using perfluorooctyltriethoxysilane (POTS), and lastly producing the superhydrophobic coatings applied via spraying on the aluminum sheet surface. The micro morphology of the samples was analysed by SEM and EDS, the molecular makeup of the samples was analysed by FTIR and the molecular stability, mechanical stability and algae resistance were tested, and finally the the rust unwillingness of the coatings was investigated by using an electrochemical workstation (Tafel and EIS). The outcomes demonstrated that the best GO to nanoparticle mass ratio of 10% was chosen to achieve a contact angle of 167.5° and a sliding angle of 2.5°. The coating contact angle was still superior to 150° after 7 days of immersion in strong acids and bases as well as 3.5 wt% Nacl and after 8 hours of immersion in boiling water. After 800 abrasion tests the contact angle was still 150.6°. Algae resistance tests showed that the coatings had good resistance to algae adhesion.