Preparation And Performance Study Of Superhydrophobic And Ice Resistant Surface Structure Of Titanium Alloy

The traditional deicing methods include artificial mechanical deicing,spraying chemicals deicing and thermal cycle to increase the surface temperature deicing.With the development of science and technology,various industries are putting forward higher requirements for environmental protection,convenience and sustainable development,and the previous deicing methods cannot meet the needs gradually.The existing research shows that superhydrophobic surface has certain ice resistance,however,superhydrophobic ice resistance surface also has some shortcomings,such as limited use times and water droplets and superhydrophobic surface pinning,which will cause irreparable accidents under extreme conditions,such as aerospace,biomedical and military equipment testing.TC4 titanium alloy is one of the most commonly used materials in the above fields.In this paper,the superhydrophobic structure of TC4 titanium alloy surface processing is studied as follows: the preparation methods of surface micro-nano structure and the research status of superhydrophobic anti-icing.Based on the superhydrophobic theory and the water drop freeze theory,designing a superhydrophobic surface structure and a process path.Preparation and characterization of superhydrophobic ice-resistant surface.Anti-ice performance test.The performance characteristics and applications of titanium alloy are being studied,and the preparation methods of superhydrophobic surface micro-nano structure and the research status of superhydrophobic anti-ice at home and abroad are being understood.Based on the above research,it paves the way for the following structural design and processing.The superhydrophobic theory and liquid freezing principle are being studied.Based on the above theoretical model and principle,the array pit and stripe composite superhydrophobic antiice structure is being designed,and the processing path of the composite structure is being designed.The experimental part is mainly divided into femtosecond laser preparation of titanium alloy surface micro-nano structure and surface ice resistance test.Femtosecond laser processing is being used to process titanium alloy.By setting the geometric structure parameters and processing parameters,the influence law of different variables on the indicators of surface microstructure in single factor experiment and orthogonal experiment is being studied,and the formation mechanism of surface structure is being analyzed and summarized.Carrying out chemical treatment on the material after surface processing,reducing the chemical energy of the material surface,improving the wettability of the titanium alloy surface and enabling the material surface to reach a superhydrophobic state.The changes of chemical elements and functional groups on the hydrophilic and superhydrophobic surfaces of TC4 titanium alloy are being analyzed by X-ray energy dispersive spectroscopy and fourier transform infrared spectroscopy.Finally,the wettability of the surface structure prepared with the optimal parameters is being tested.Finally,an ice resistance test is being carried out on that titanium alloy superhydrophobic surface.A comparison experiment is being carried out on the titanium alloy hydrophilic surface and the superhydrophobic surface,comparing the freezing time,the surface icing amount and the surface ice thickness of liquid drops on the two surfaces,and testing the ice resistance of the surfaces.In order to further illustrate the anti-icing performance of the superhydrophobic surface prepared in this experiment,the adhesion test of ice on the surface and the freeze-thaw test of the surface are being carried out.The final experimental results show that the superhydrophobic structure processed on the TC4 titanium alloy surface can effectively improve the anti-icing performance of the surface and avoid accidents caused by poor anti-icing performance.