A kind of hydrophobic acid resistant high conductivity anion exchange membrane and preparation method thereof
An anion exchange membrane, high conductivity technology, applied in separation methods, chemical instruments and methods, membranes, etc., can solve problems such as high energy consumption, low acid product concentration, and low life expectancy
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Embodiment 1
[0027] Example 1. Polyvinylidene fluoride, polyaniline, and polyvinylpyrrolidone are used to form a film by thermal phase inversion, and then dissolved and etched to make a hydrophobic, acid-resistant, and high-conductivity anion exchange membrane.
[0028] The specific preparation process of the above-mentioned hydrophobic acid-resistant high-conductivity anion-exchange membrane is as follows:
[0029] (1) Mix and stir 2.9% polyaniline, 0.1% polyvinylpyrrolidone and 15% N-methylpyrrolidone at room temperature for 2 hours to obtain a polyaniline dispersion; in addition, mix 12% polyvinylidene fluoride and 70 % of N-methylpyrrolidone was mixed and stirred for 2h, then the polyaniline dispersion was added to the hydrophobic polymer solution and continued to mix and stir for 4 h to obtain a casting solution;
[0030] (2) The above casting solution was ultrasonically oscillated for 30 min, and then left to stand for 12 h;
[0031] (3) Scrape the casting solution on a glass plate ...
Embodiment 2
[0039] Example 2: Polyvinyl chloride, polyaniline, and n-propyltrimethoxysilane were used to form a film by thermal phase inversion, and then dissolved and etched to make a hydrophobic, acid-resistant, and high-conductivity anion exchange membrane.
[0040] The specific preparation process of the above-mentioned hydrophobic acid-resistant high-conductivity anion-exchange membrane is as follows:
[0041] (1) Mix and stir 1.85% polyaniline, 0.15% n-propyltrimethoxysilane and 20% dimethyl sulfoxide at 60°C for 3 hours to obtain a polyaniline dispersion; in addition, mix 10% Polyvinyl chloride and 68% dimethyl sulfoxide were mixed and stirred for 3 hours, and then the polyaniline dispersion was added into the hydrophobic polymer solution to continue mixing and stirring for 6 hours to obtain a casting solution;
[0042] (2) The above casting solution was ultrasonically oscillated for 40 minutes, and then left to stand for 24 hours;
[0043](3) Scrape the casting solution on a glas...
Embodiment 3
[0051] Example 3: Polyethersulfone, polyaniline, and tetraethyl orthosilicate are used to form a film by thermal phase inversion, and then dissolved and etched to make a hydrophobic, acid-resistant, and high-conductivity anion-exchange membrane.
[0052] The specific preparation process of the above-mentioned hydrophobic acid-resistant high-conductivity anion-exchange membrane is as follows:
[0053] (1) Mix and stir 4% polyaniline, 0.2% tetraethyl orthosilicate and 25% N,N-dimethylformamide at 70°C for 3 hours to obtain a polyaniline dispersion; in addition, mix 10.8% The polyethersulfone and 60% N,N-dimethylformamide were mixed and stirred for 3 hours, and then the polyaniline dispersion was added to the hydrophobic polymer solution and continued to mix and stir for 6 hours to obtain a casting solution;
[0054] (2) The above casting solution was ultrasonically oscillated for 25 minutes, and then left to stand for 15 hours;
[0055] (3) Scrape the casting solution on a glas...
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