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High-concentration high-stability transitional metal chalcogen compound printing ink for ink jet printing and preparation method of printing ink

A chalcogen compound and transition metal technology, which is applied in the field of high-concentration and high-stable transition metal chalcogen compound ink and its preparation, can solve the problems of low ink concentration, poor stability, inconvenient use and storage, etc., so as to increase the concentration and inhibit agglomeration , easy peeling effect

Inactive Publication Date: 2018-08-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the low concentration and poor stability of existing transition metal chalcogenide nanoflake inks, which lead to inconvenient use and storage, the present invention provides a high-concentration and high-stability transition metal chalcogenide ink for inkjet printing. It lies in: making the transition metal chalcogenide nanosheets have strong stability under higher concentration conditions, so that it is convenient to use and long-term storage

Method used

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  • High-concentration high-stability transitional metal chalcogen compound printing ink for ink jet printing and preparation method of printing ink
  • High-concentration high-stability transitional metal chalcogen compound printing ink for ink jet printing and preparation method of printing ink
  • High-concentration high-stability transitional metal chalcogen compound printing ink for ink jet printing and preparation method of printing ink

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preparation example Construction

[0034] A method for preparing a high-concentration and high-stable transition metal chalcogenide ink for inkjet printing, comprising the steps of:

[0035] [1] Two stripping solvents were selected and mixed according to a certain ratio to prepare a binary good solvent system, and the specific ratio was calculated according to the Hansen solubility parameter theory.

[0036] [2] In the binary good solvent system that step [1] obtains, add water-soluble polymer compound, obtain mixed solvent; 30%.

[0037] [3] Disperse the transition metal chalcogen compound powder in the mixed solvent obtained in step [2], and then peel off the transition metal chalcogen compound nanosheets from the transition metal chalcogen compound powder by ultrasonic stripping; transition The initial concentration of the metal chalcogen compound powder is 5-40mg / mL.

[0038] [4] Centrifuge the dispersion obtained after the treatment in step [3], and take the supernatant as the transition metal chalcogen ...

Embodiment

[0049] Mix 18mL of ethanol and 22mL of deionized water in a beaker, add 80mg of polyvinylpyrrolidone, then weigh 400mg of molybdenum disulfide powder raw material and disperse it in the mixed solution to prepare molybdenum disulfide suspension with an initial concentration of 10mg / mL liquid. Place the probe head of the probe ultrasonic instrument at 2-3cm below the liquid surface of the molybdenum disulfide suspension, adjust the power of the probe ultrasonic instrument to 300W, and perform cavitation stripping on the molybdenum disulfide suspension, and the stripping time is 30min ; During the stripping process, the temperature of the dispersion is kept at 30° C. by circulating water cooling. After the probe ultrasound is finished, the molybdenum disulfide suspension is transferred to the ultrasonic pool to continue stripping. The power of the ultrasonic pool is 350W, and the stripping time is 18h; similarly, during the stripping process, the temperature of the dispersion is ...

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Abstract

The invention belongs to the technical field of two-dimensional material preparation, and particularly relates to high-concentration high-stability transitional metal chalcogen compound printing ink for ink jet printing and a preparation method of the printing ink. Specific to the problem that as current transitional metal chalcogen compound nano sheet printing ink is low in concentration and poorin stability, the use and storage are inconvenient, the technical scheme of the invention is characterized in that the preparation method comprises the following steps: [1] selecting two kinds of stripping solvents, and preparing a binary good solvent system; [2] adding a water-soluble high-molecular compound into the binary good solvent system to obtain a mixed solvent; [3] stripping a nano sheet of a transitional metal chalcogen compound from transitional metal chalcogen compound powder by using an ultrasound stripping method; [4] performing centrifugal separation, and taking supernate, i.e., transitional metal chalcogen compound nano sheet dispersion liquid; and [5] adding a conditioning agent with a physical property to obtain the transitional metal chalcogen compound printing ink. The transitional metal chalcogen compound printing ink is suitable for the ink jet printing of a transitional metal chalcogen compound two-dimensional material.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional material preparation, and in particular relates to a high-concentration and high-stable transition metal chalcogen compound ink for inkjet printing and a preparation method thereof. Background technique [0002] Two-dimensional layered materials represented by graphene have special physical and chemical properties different from three-dimensional bulk materials due to their local characteristics on a two-dimensional scale, and are widely used in the manufacture of electronic devices. Similar to graphene structure, MoS 2 、WSe 2 、WS 2 Such typical transition metal chalcogenides (TMDs) also belong to layered compounds, and the layers are combined by van der Waals forces. Single-layer or few-layer transition metal chalcogenides have unique electrical and optical properties such as strong light-matter interaction, spin-orbit coupling, and spin-valley degrees of freedom, making them of great ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C09D11/38
CPCC09D11/30C09D11/38
Inventor 陈金菊刘陈仁浪冯哲圣王焱李培真
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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