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PDMS composite film doped with conductive material and preparation method thereof

A technology of conductive materials and composite films, which is applied in metal material coating technology, friction generators, vacuum evaporation plating, etc., can solve the problems of little research on the spatial structure of the friction layer, and achieve increased output, high charge density, and low Effect of Impedance Characteristics

Active Publication Date: 2019-04-02
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many previous works mainly focused on the research on the surface structure and chemical modification of materials, and little research on the spatial structure inside the friction layer

Method used

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  • PDMS composite film doped with conductive material and preparation method thereof
  • PDMS composite film doped with conductive material and preparation method thereof
  • PDMS composite film doped with conductive material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The assembly of embodiment 1 gold composite film nanogenerator (G-TENG)

[0027] Prepare the PDMS composite film (i.e. the negative friction layer of G-TENG) that is mixed with conductive material of the present invention to improve the longitudinal charge density of the nanogenerator friction layer, and operate according to the following steps (flow process is as follows: figure 1 shown):

[0028] 1) Take a square acrylic board with a side length of 4 cm (PVC or wood or glass or resin board or polyimide board or PET board or nylon board or PP board or PMMA board or PTFE board) as a lining On the bottom, attach a piece of aluminum foil of the same size to the acrylic board with double-sided polyimide tape.

[0029] 2) Spin-coat PDMS solution (silicone resin 184, Dow Corning) on ​​the aluminum foil, the speed of spin-coating is 100-8000rpm, the spin-coating time is 5-100s, after spin-coating, vacuumize in the vacuum chamber for 10-120 minutes, Then place it on a heatin...

Embodiment 2

[0042] Embodiment 2 prepares the PDMS composite membrane of the present invention

[0043] Prepare the PDMS composite membrane that has 3 layers of gold layers according to the method for embodiment 1, and its structural representation is as follows Figure 5 As shown, from bottom to top are: substrate 1, aluminum foil layer 2, first PDMS layer 3, three layers of Au-PDMS composite layer 4, the Au-PDMS composite layer 4 is composed of gold layer 5 and above the gold layer The second PDMS layer 6 is composed.

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Abstract

The invention discloses a conducting material doped PDMS composite film capable of improving the longitudinal electric charge density of a generator frictional layer and a preparation method thereof.The preparation method comprises the following steps: (1) taking a substrate, and taking an aluminum foil to be adhered to the substrate; (2) spin-coating a PDMS solution on the aluminum foil, vacuumizing in a vacuum cavity after spin-coating, and then heating and curing; (3) spraying gold on the surface of the PDMS with a magnetron sputtering method, (4) carrying out plasma treatment, and spin-coating the PDMS solution; (5) vacuumizing in the vacuum cavity, heating and curing; and (6) repeating the step three to the step five to obtain the PDMS gold composite film with different numbers of gold layers. A G-TENG with high transfer electric charge density and biocompatibility and low impedance characteristic is successfully prepared, an internal electronic area is added by burying gold layers in the near surface of a frictional surface, so that the output of TENG is increased, and the gold layers are beneficial for the drifting of electrons inside the frictional layer and play a role oftrapping the electrons.

Description

technical field [0001] The invention relates to the technical field of triboelectric nano-power generation, in particular to a PDMS composite film which is doped with a conductive material to increase the longitudinal charge density of a friction layer of a nano-generator and a preparation method thereof. Background technique [0002] In recent years, triboelectric nanogenerators (TENGs) based on the coupled electrostatic induction effect and triboelectrification effect have been increasingly used to harvest the surrounding environment mechanically. Because TENG can directly convert mechanical energy into electrical energy and immediately power small electronic devices, many studies have shown that TENG can effectively harvest mechanical energy such as human motion, ocean waves, wind, etc. that exist in our surrounding environment. With the development of sensing devices based on TENG technology such as biomedical sensors, electronic skin and human-computer interaction senso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/04C23C14/20C23C14/35
CPCC23C14/205C23C14/35H02N1/04
Inventor 奚伊赖美慧胡陈果张大志张承双
Owner CHONGQING UNIV
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