Carbon nanotubes, carbon nanospheres, long-chain alkyl amine, pentaerythritol-containing compound and branched amino polymer were mixed in ethanol medium without heat; by utilizing the in-situ growth of nanoscale low surface energy granules onto carbon matrix surface via the room-temperature reaction between acrylate-comprising reactant and amino substance, whereafter the hierarchical structural assembly was formed, the carbon nanotubes-based nonfluorinated superlyophobic paint was constructed in the one-pot spontaneous condition. Well-suited spraying technology was used for fixation of as-prepared superwetting paint on cotton textile to create fluoride-free hot-water-repellent cotton fabric coating, its contact angle and sliding angle were 155.0 degrees and 2 degrees tested by 95 degrees C of water. Furthermore, the anti-fouling effect of such coated fabric to 95 degrees C sewage and self-cleaning behavior, by dripping 95 degrees C water onto coating product, were adequately established. Notably, universally applicable fabrication and large-scale formation of the hot-water-repellent coating were also realized, thereinto these coating surfaces of apocynum fabric, glass sheet, cardboard, plastic sheet, cork board and sponge, sprayed by the carbon nanotubes-based superwetting paint, had contact angles over 158 degrees as well as 1 degrees of sliding angles (tested water temperature, 95 degrees C). Beyond that, the cellulose sheet coating, obtained using same strategy as mentioned above, could separate mixture of oil and hot water (55 degrees C), meanwhile its oil-hot water separation flux and efficiency were 9370 L center dot m-2 center dot h-1 and 99.7 %. It is believed that the self-developed carbon nanotubesbased nonfluorinated superwetting special paint product provides robust hot-water-repellent coating that is beneficial to the low-carbon development of hot liquid resistant surfaces with easy operability, environmental sustainability, and durable application.
