52results about How to "Achieving superhydrophobicity" patented technology

The invention relates to full-surface super-hydrophobic anti-freezing wood and a manufacturing method thereof. The preparation method comprises the following steps: partially removing lignin and hemicellulose to form spongy wood, injecting hydrophobic nanoparticles and perfluorosilane into the outer surface and internal pores of the spongy wood through an absorption-extrusion process, and finally,carrying out hot-pressing densification treatment to obtain the super-hydrophobic anti-freezing high-strength wood. The super-hydrophobic anti-freezing high-strength wood disclosed by the invention is densified full-surface hydrophobic wood; the densification means that the wooden pipeline and the porous wooden cell wall partially collapse, so that the thickness of the wood is reduced to 30-40% of the initial thickness, and the density is increased by 2.5-3 times; wherein the full-surface hydrophobicity refers to the synergistic hydrophobicity of the outer surface of the wood and the inner surface of the pore passage of the wood. According to the anti-freezing high-strength wood, the bending strength is improved by 2-4 times compared with logs made of the same material; after 10 times offreezing and thawing cycles and 50 times of freezing and thawing cycles respectively, the bending strength is kept at 80% or above and 50% or above respectively; and the dimensional stability is stillmaintained even after 50 times of freezing and thawing cycles.