Easily-releasable concrete test mould with inner wall having ultra-hydrophobic/ultra-smooth performance and preparation method thereof

Abstract

A preparation method for an easily-releasable concrete test mould with an inner wall having ultra-hydrophobic/ultra-smooth performance includes spin-coating a negative photoresist and obtaining a substrate with an inner wall having inverted-trapezoid microstructures by ultraviolet lithography; depositing a metal layer by vacuum evaporation; removing the metal layer on an upper surface of the inverted trapezoid microstructures of the inner wall of the substrate; obtaining a micro-nano hierarchical structure on the metal layer surrounding the inverted trapezoid microstructures of the inner wall of the substrate; spin-coating a molten wax and cooling down to room temperature, and filling the solid wax into micron-level pores between the inverted trapezoid structures; spin-coating a positive photoresist and performing ultraviolet lithography; g. draining the solid wax out of the micron-level pores to obtain a substrate with an ultra-hydrophobic surface structure; and assembling the substrate to obtain an ultra-hydrophobic easily-releasable concrete test mould.

Dependencies are inferred from the claim text.