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A kind of preparation method of flower-shaped copper sulfide-nitrogen methyl pyrrolidone dispersant

The technology of nitrogen methyl pyrrolidone and polyvinyl pyrrolidone is applied in the field of preparation of flower-shaped copper sulfide-nitrogen methyl pyrrolidone dispersant, which can solve problems such as difficulty in preparing uniformly dispersed polymer/copper sulfide film, and achieves low material price , the preparation is simple, the effect of improving the photothermal conversion efficiency

Inactive Publication Date: 2018-02-02
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, copper sulfide nanomaterials synthesized by hydrothermal synthesis and alcohol solvothermal synthesis are difficult to directly mix with polymers (such as polyimide) to obtain a uniformly dispersed mixed solution, and it is difficult to prepare uniformly dispersed polymer / copper sulfide films.

Method used

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  • A kind of preparation method of flower-shaped copper sulfide-nitrogen methyl pyrrolidone dispersant
  • A kind of preparation method of flower-shaped copper sulfide-nitrogen methyl pyrrolidone dispersant
  • A kind of preparation method of flower-shaped copper sulfide-nitrogen methyl pyrrolidone dispersant

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Experimental program
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Effect test

Embodiment 1

[0028] (1) First weigh 0.5g polyvinylpyrrolidone, add 15mL nitrogen methylpyrrolidone to dissolve and disperse, wait until the solution becomes clear and transparent, add 0.5mmoL copper sulfate pentahydrate solid under magnetic stirring, and continue stirring for 20 minutes to obtain a bright green color clear solution;

[0029] (2) Weigh 1mmoL of sulfur powder in the lining of a 25mL polytetrafluoroethylene reactor, then pour the above solution into the lining and stir for 10 minutes;

[0030] (3) Assemble the reaction kettle and react at 180° C. for 4 hours. After the reaction, pour off the supernatant, purify by centrifugation, and redisperse in nitrogen methyl pyrrolidone to prepare copper sulfide-nitromethyl pyrrolidone dispersant. The low magnification SEM collection of illustrative plates (a) and the high magnification SEM collection of illustrative plates (b) of copper sulfide sample in this copper sulfide-nitromethylpyrrolidone dispersant are as figure 1 Shown, the ...

Embodiment 2

[0033] (1) First weigh 0.5g polyvinylpyrrolidone, add 15mL nitrogen methylpyrrolidone to dissolve and disperse, wait until the solution becomes clear and transparent, add 0.5mmoL copper sulfate pentahydrate solid under magnetic stirring, and continue stirring for 20 minutes to obtain a bright green color clear solution;

[0034] (2) Weigh 1mmoL of sulfur powder in the lining of a 25mL polytetrafluoroethylene reactor, then pour the above solution into the lining and stir for 10 minutes;

[0035] (3) Assemble the reaction kettle and react at 180° C. for 12 hours. After the reaction, pour off the supernatant, purify by centrifugation, and redisperse in nitrogen methyl pyrrolidone to prepare copper sulfide-nitromethyl pyrrolidone dispersant.

Embodiment 3

[0037] (1) First weigh 1.0g of polyvinylpyrrolidone, add 15mL of nitrogen methylpyrrolidone to dissolve and disperse, wait until the solution becomes clear and transparent, add 1mmoL copper sulfate pentahydrate solid under magnetic stirring, and continue to stir for 20 minutes to obtain bright green and transparent solution;

[0038] (2) Weigh 4mmoL of sulfur powder in the lining of a 25mL polytetrafluoroethylene reactor, then pour the above solution into the lining and stir for 10 minutes;

[0039] (3) Assemble the reaction kettle and react at 140° C. for 8 hours. After the reaction, pour off the supernatant, purify by centrifugation, and redisperse in nitrogen methyl pyrrolidone to prepare copper sulfide-nitromethyl pyrrolidone dispersant.

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Abstract

The invention relates to a flower-like copper sulfide-1-methyl-2-pyrrolidinone dispersing agent preparation method, which specifically comprises: (1) adding a surfactant into 1-methyl-2-pyrrolidinone, and adding a soluble bivalent copper salt under stirring to obtain a mixed solution; and (2) adding a sulfur source material into the mixed solution under stirring, carrying out a solvothermal reaction in a reaction kettle, purifying after the reaction to obtain the precipitate, and re-dispersing the precipitate in the 1-methyl-2-pyrrolidinone so as to obtain the flower-like copper sulfide-1-methyl-2-pyrrolidinone dispersing agent. According to the present invention, compared to the method in the prior art, the method of the present invention has the following characteristics that the one-step solvothermal reaction is used and the 1-methyl-2-pyrrolidinone is adopted as the dispersing solvent to synthesize the copper sulfide-1-methyl-2-pyrrolidinone dispersing agent, and the flower-like copper sulfide-1-methyl-2-pyrrolidinone dispersing agent has characteristics of excellent performance and good stability, can well absorb near infrared light, can be directly used as the polymer dispersing solvent, and can be used for preparing the polymer / copper sulfide composite film, wherein the film forming method is simple.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, and relates to a preparation method of a flower-shaped copper sulfide-nitromethylpyrrolidone dispersant. Background technique [0002] In recent years, near-infrared shielding films have been widely used, and have attracted more attention because they have both transparency and heat insulation. The near-infrared shielding film mainly absorbs or reflects most of the near-infrared light and transmits most of the visible light to achieve the effect of heat insulation and transparency at the same time. There are mainly two types of near-infrared shielding films. One is a metal film prepared by vacuum coating or magnetron sputtering, such as Ag, Au, Ni and other films, which can reflect part of visible light and near-infrared light to reduce sunlight. transfer of energy. However, the preparation method of this film requires relatively harsh conditions and is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/12C08K3/30C08J5/18C08L101/00B82Y40/00
CPCC01G3/12C01P2002/72C01P2002/82C01P2004/03C01P2004/30C08J5/18C08J2300/00C08K3/30C08K2003/3009C08L2203/16C08L101/00
Inventor 田启威冯群峰杨仕平安璐王媛媛芮西川母雪玲郑强
Owner SHANGHAI NORMAL UNIVERSITY
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