Preparation method of inorganic and organic electrochromic film
An electrochromic and composite film technology, applied in the field of electrochromic film preparation, can solve the problems of short life, poor stability, poor weather resistance, etc., and achieve the effect of uniform size and distribution, tight and uniform bonding, and excellent and stable performance.
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Embodiment 1
[0028] A method for preparing an inorganic-organic electrochromic composite film, comprising the following steps:
[0029] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 25% twice the volume of orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:1, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.4mol / L, after 22 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 50°C to obtain SiO 2 Nano or submicron spheres;
[0030] In the second step, first configure the ethanol / water solution with a volume ratio of 2:1, then dissolve styrene, polyvinylpyrrolidone and potassium persulfate in the above solution, wherein the concentration of styrene is 0.2g / cm 3 , m 苯 乙烯 :m 聚乙烯吡咯浣酮 =5:1, th...
Embodiment 2
[0037] A method for preparing an inorganic-organic electrochromic composite film, comprising the following steps:
[0038] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 28% that is 5 times the volume of orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:2, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.6mol / L, after 22 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 60°C to obtain SiO 2 Nano or submicron spheres;
[0039] In the second step, first configure the ethanol / water solution with a volume ratio of 3:1, then dissolve styrene, polyvinylpyrrolidone and potassium persulfate in the above solution, wherein the concentration of styrene is 0.1g / cm 3 , m 苯 乙烯 :m 矛乙烯吡咯烷...
Embodiment 3
[0046] A method for preparing an inorganic-organic electrochromic composite film, comprising the following steps:
[0047] The first step is to dissolve ethyl orthosilicate in a part of absolute ethanol to form solution A, and then dissolve ammonia water with a mass concentration of 25% twice the volume of orthosilicate in b part of absolute ethanol Configure solution B, a:b=1:1, then place solution A in a magnetic stirring device, add solution B to solution A under constant stirring, and the concentration of ethyl orthosilicate in the mixed solution is 0.6mol / L, after 22 hours of reaction, the precipitate was separated, washed by centrifugation and dried at 60°C to obtain SiO 2 Nano or submicron spheres;
[0048] In the second step, first configure the ethanol / water solution with a volume ratio of 3:1, then dissolve styrene, polyvinylpyrrolidone and potassium persulfate in the above solution, wherein the concentration of styrene is 0.1g / cm 3 , m 苯 乙烯 :m 聚乙烯吡咯烷酮 =5:1, th...
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