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A light-bending material and its preparation method

A bending and plastic bag technology, which is applied in the field of light bending materials and its preparation, can solve the problems of unsatisfactory comprehensive properties of light bending materials, and achieve the effect of simple and easy preparation method, good performance and broad application prospects

Active Publication Date: 2021-08-03
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the purposes of the present invention is to provide a light-bending material to solve the problem of unsatisfactory comprehensive performance of existing light-bending materials

Method used

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  • A light-bending material and its preparation method
  • A light-bending material and its preparation method
  • A light-bending material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Based on MoS 2 Preparation of photobending materials of quantum dots and BN nanosheets

[0032] (1) Prepare a glassware with a cover, wipe the glassware with absorbent cotton dipped in acetone and absolute ethanol respectively to wipe off the dust and oil stains attached to the surface, and then put the glassware in acetone and alcohol respectively Ultrasonic cleaning for 10 min, then ultrasonic cleaning in deionized water for 5 min, and finally with N 2 blow dry.

[0033] (2) Preparation of acrylamide prepolymerization solution:

[0034] Add 1mL of polyethylene glycol diacrylate (average molecular weight 600), 0.15g of N-isopropylacrylamide (NIPAM, AR content 98%) and 0.005g of N,N'-substance Methylbisacrylamide (BIS), followed by the addition of 0.1 mL of MoS 2 Quantum dot dispersion and 0.3mL of BN nanosheet dispersion. Then add 14.5uL of ammonium persulfate solution (5wt%) and 6.5uL of N,N,N',N'-tetramethylethylenediamine (TEMED, 99%) using a pipette....

Embodiment 2

[0043] Embodiment 2 performance test

[0044] Because MoS 2 With the incorporation of quantum dots and BN nanosheets, the acrylamide gel has some special properties. Such as image 3 As shown, the material made in Example 1 is placed on the stage of Mshot Mingmei Metallographic Microscope MJ33, the light source of the microscope is turned on (the light comes from the epi-illumination system of Mshot Mingmei Metallographic Microscope MJ33), and the material is irradiated. The material exhibits bionic properties and bends toward the light source like a sunflower, and the bending angle increases with the increase of irradiation time, and finally stops bending. Because MoS 2 Due to the unique optical properties of quantum dots and the wide bandgap and high thermal conductivity of BN nanosheets, the photobending material has excellent photothermal conversion efficiency. bending rate.

[0045] Based on the MoS prepared in Example 1 2 The photobending rate and maximum photobend...

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Abstract

The invention provides a light-bending material and a preparation method thereof. The preparation method includes the following steps: (a) preparing a uniformly dispersed MoS 2 Acrylamide pre-polymerization solution of quantum dots and BN nanosheets; (b) put the acrylamide pre-polymerization solution prepared in step (a) into a capillary glass tube through capillary effect; (c) put the acrylamide pre-polymerization solution filled with acrylamide The capillary glass tube of the polymerization solution is gelled in a constant temperature anaerobic environment; (d) after the gel is completed, the capillary glass tube is dissolved with hydrofluoric acid, and then the gel is soaked in deionized water to remove the residual hydrofluoric acid After that, the light-bending material is obtained. The light-bending rate of the light-bending material of the present invention is significantly greater than that of the existing light-bending materials. The preparation method provided by the invention is simple and easy to operate, has good operability and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of light-bending materials, in particular to a light-bending material and a preparation method thereof. Background technique [0002] Bionics is one of the main means for people to solve difficult problems in real life. In the long history of the development of bionics, we can see that bionics has greatly promoted the human society. Recently, light-bending materials that imitate the phototaxis of sunflowers have become one of the hot topics in scientific research. For example, researchers from Southeast University have used graphene oxide to prepare light-bending materials with excellent performance, but the physical properties of the materials for light-bending Further improvement is needed. Light-bending materials can be used in many fields such as smart sensors, color-changing anti-counterfeiting, etc., and have great application value. Contents of the invention [0003] One of the objectives of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/54C08F222/20C08F222/38C08K3/30C08K7/00C08K3/38
CPCC08F220/54C08K3/30C08K3/38C08K7/00C08K2003/3009C08K2003/385C08K2201/011
Inventor 刘同钦王博平闫小兵
Owner HEBEI UNIVERSITY