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Usually called superhydrophobic surface water in the surface of the solid surface contact angle greater than 150 ° . Have broad application prospects in the production and life , superhydrophobic surfaces , such as ship paint, defaced with anti- biological satellite antenna surface cleaning car windshields , self-cleaning , stain textiles , stain architectural coatings , fluid drag reduction , etc., and therefore the relevant research is being more and more attention . Usually the preparation of the super-hydrophobic surface using two methods : one is the first build a fine structure on the solid surface , and then the low surface energy material modification ; another directly in a low surface energy material build a fine structure on the surface . As a result of the above method in the preparation of technically complex process , expensive , difficult to conduct a large-scale promotion and application in practice . The low cost of the study is simple and feasible for large-scale preparation of superhydrophobic materials preparation method has very important significance . By gas-liquid - solid diffusion method to explore a simple one - step synthesis method , to hydroxylation of multi-walled carbon nanotubes as base material , through organic covalent chemical modification generated on its surface , the outermost containing hydrophobic groups methyl a silane polymer coated layer, thereby preparing a carbon nanotube substrate nearly complete hydrophobic nano materials . Nearly complete hydrophobic material obtained in the high temperature heat treatment , so as to achieve a completely hydrophobic properties . The droplets of the test can not be conducted in such a material surface adhesion, and has a very good hydrophobicity . While using Contact angle (CA ) , FE-SEM , TEM , FT -IR , TG- DSC, were characterized by means of prepared material . The the completely hydrophobic material has been applied in order to make such a preliminary study of its properties, such as acid and alkali resistance , thermal stability .
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