Method for producing a superhydrophobic membrane or surface coating of a substrate
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United States of America Patent
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Oct 1, 2019
Grant Date -
Jan 26, 2017
app pub date -
Apr 9, 2015
filing date -
Apr 10, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
The invention concerns a method for producing a superhydrophobic membrane or surface coating of a substrate from an aqueous phase comprising the following steps: a) Preparing an aqueous dispersion by dispersing particles of hydrophobic polymer(s) in an aqueous solution of protic polymer(s), wherein the protic polymer(s) and the hydrophobic polymer(s) are present in a weight ratio of protic polymer(s):hydrophobic polymer(s) in a range of 5:95 to 22:78, b) electrospinning the dispersion of step a) onto a carrier for producing the membrane or onto the surface for producing the surface coating thereby producing at least one fiber and a nonwoven fabric from the fiber, c) subjecting the nonwoven fabric to a sol-gel process, wherein a precursor/precursors of the sol-gel comprise(s) an alkoxysilane, and d) curing the nonwoven fabric obtained by step c) at a temperature in a range of 50° C. to 150° C.
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- B01D:SEPARATION
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