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Method for preparing transparent silver halide/high-molecular composite film

A composite film and silver halide technology, which is applied in the field of preparation of silver halide/polymer composite film, can solve the problems of non-halide silver research, no silver halide/polymer composite film work research, etc., and achieves low cost and easy implementation. , the effect of the simple method

Inactive Publication Date: 2012-07-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A method of dissolving silver chloride using a mixed solution of N,N'-dimethylformamide and hydrochloric acid was reported in the previous patent [Zhao Chongjun, Xu Yunlong, Qian Xiuzhen, Li Bing, Wang Meng, Ma Xinsheng, a method from AgCl powder Set out the method for preparing silver chloride sol and silver sol, invention patent, patent application number: 200910045008.9.], however, did not carry out research to other silver halides (silver bromide, silver iodide), and also did not carry out silver halide / polymer Work on Composite Thin Films

Method used

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  • Method for preparing transparent silver halide/high-molecular composite film

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Comparison scheme
Effect test

Embodiment 1

[0016] Add 5ml of DMF into the beaker, and then add polyvinylidene fluoride (PVDF) under stirring condition until the solution is saturated to obtain a DMF solution of PVDF. Weigh AgBr and dissolve it in 5ml of DMF, then add KBr solid under the condition of stirring the solution until the yellow precipitate at the bottom is completely dissolved, that is, a DMF solution of AgBr is obtained. Mix the DMF solution of PVDF and the DMF solution of AgBr to obtain the mixed solution of AgBr / PVP. Using the spin coating method, a transparent AgBr / PVDF composite film was prepared under the condition of 3000rpm, such as figure 1 as shown in a.

Embodiment 2

[0018] 5 ml of chloroform was added into the beaker, and then polyvinyl pyrrolidone (Polyvinyl Pyrrolidone, PVP) was added under stirring condition until the solution was saturated to obtain a chloroform solution of PVP. Weigh AgI and dissolve it in 5ml DMF, and then add KI solid under the condition of stirring the solution until the yellow precipitate at the bottom is completely dissolved, that is, the DMF solution of AgI is obtained. Mix the chloroform solution of PVP and the DMF solution of AgI to obtain the mixed solution of AgI / PVP. Using the spin coating method, a transparent AgI / PVP composite film is prepared under the condition of 3000rpm at a rotating speed, such as figure 1 as shown in b.

Embodiment 3

[0020] Add 5ml of acetone into the beaker, and then add polyvinyl pyrrolidone (Polyvinyl Pyrrolidone, PVP) under the condition of stirring until the solution is saturated to obtain the acetone solution of PVP. Weigh AgI and dissolve it in 5ml DMF, and then add KI solid under the condition of stirring the solution until the yellow precipitate at the bottom is completely dissolved, that is, the DMF solution of AgI is obtained. Mix the acetone solution of PVP and the DMF solution of AgI to obtain the mixed solution of AgI / PVP. Using the spin coating method, a transparent AgI / PVP composite film is prepared under the condition of 3000rpm at a rotating speed, such as figure 1 as shown in c.

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Abstract

The invention discloses a method for preparing a transparent silver halide / high-molecular composite film, which comprises the following steps: synthesizing an N,N'-dimethyl formamide solution of a silver halide (silver bromide, silver iodide or silver chloride), mixing the N,N'-dimethyl formamide solution of the silver halide with an organic solution dissolved with high molecules to obtain a silver halide / high-molecular composite organic solution, and treating by spin coating, dip coating, spraying or any other filming technique to obtain the silver halide / high-molecular composite film. The method has the advantages of low cost and simple process, and is easy to implement.

Description

technical field [0001] The invention relates to a method for preparing a silver halide / polymer composite film, in particular to the dissolution of a polymer in an organic solvent, the preparation of a silver halide homogeneous solution, and the formation of a composite homogeneous solution of a silver halide solution and a polymer organic solution , Silver halide / polymer composite film preparation and other processes. Background technique [0002] Silver halide is an important semiconductor with important applications in photography, electrochemistry, photoelectrochemistry, as well as catalysis and ion conductor, and therefore, has been extensively studied. Among them, AgCl material is the most important kind of silver halide material, which has been widely used in fields including catalysis. [0003] In order to further improve the performance of silver halide materials, silver halide composite materials, especially silver halide / polymer composite materials, have attracted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L25/06C08L33/12C08L25/10C08L69/00C08L23/06C08L67/04C08L23/08C08L31/04C08L27/06C08L27/16C08L39/06C08L67/00C08K3/16
Inventor 赵崇军兰永焕刘东旭徐云龙钱秀珍
Owner EAST CHINA UNIV OF SCI & TECH