Preparation and Performance of Superhydrophobic SiO2@TPU Porous Materials
Hydrophobic silica modified thermoplastic polyurethane(TPU)porous material(SiO2@TPU)was prepared by ultrasonic mixing method and impregnation method.The microstructure,saturation adsorption,oil-water separation and adsorption kinetics of the modified sample were discussed.The results showed that the SiO2@TPU porous material modified by SiO2 had distinct pore sizes and presented a three-dimensional hollow-out spheroidal hierarchical porous structure with high porosity and wide aperture distribution.The load of SiO2 formed a special infiltrating surface,reaching the super hydrophobic standard.The specific surface area was increased to 2 times of that before modification,the oil-water separation performance of SiO2@TPU material was better,and the adsorption rate was greatly improved.
SiO2TPUsaturated adsorption performanceoil water separation
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