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Preparation method of polydimethylsiloxane film, polydimethylsiloxane film prepared by the method and application thereof

A polydimethylsiloxane film and polydimethylsiloxane technology are applied in the field of polymer films, which can solve the problems of low output performance of triboelectric generators, and achieve the advantages of improving electrical output performance and improving negative charge. Effect

Active Publication Date: 2019-06-14
NAZHIYUAN TECH TANGSHAN LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the defects of low output performance of triboelectric generators existing in the prior art, and provides a method for preparing a polydimethylsiloxane film, the polydimethylsiloxane film prepared by the method, and its application The triboelectric generator of the polydimethylsiloxane film

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  • Preparation method of polydimethylsiloxane film, polydimethylsiloxane film prepared by the method and application thereof
  • Preparation method of polydimethylsiloxane film, polydimethylsiloxane film prepared by the method and application thereof
  • Preparation method of polydimethylsiloxane film, polydimethylsiloxane film prepared by the method and application thereof

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preparation example Construction

[0018] The invention provides a method for preparing a polydimethylsiloxane (PDMS) film, and the polydimethylsiloxane film prepared by the method can be used for a triboelectric generator, a microfluidic chip, and the like. Combine below figure 1 The method of the present invention will be described. Method of the present invention comprises the steps:

[0019] (1) Add a curing agent to the polydimethylsiloxane, and stir to obtain a mixture. Wherein, the polydimethylsiloxane used in the present invention is commercially available, for example, the model of Sylgard 184 produced by Dow Corning Corporation of the United States. Conventional commercially available curing agents (eg, vulcanizing agents) can be used in the present invention, for example, the model of Sylgard 184 produced by Dow Corning Corporation of the United States. The mass ratio of the polydimethylsiloxane to the curing agent is 1:1-20:1, preferably 10:1.

[0020] (2) Doping negatively charged micro-nano pa...

Embodiment 1

[0034]1. Preparation of Polydimethylsiloxane Membrane

[0035] Add a curing agent (Dow Corning 184) to polydimethylsiloxane (Dow Corning), and stir to obtain a mixture, wherein the mass ratio of polydimethylsiloxane to curing agent is 10:1. Doping silicon dioxide particles with a particle diameter of 200nm-500nm into the mixture, the doping amount is 7% by weight, and mixing uniformly to obtain polydimethylsiloxane slurry. The polydimethylsiloxane slurry was doctor-coated on the template, and the film was degassed under vacuum to remove air bubbles in the film, and then baked in a drying oven at 70° C. for 2 hours. Then, the membrane was immersed in ammonia water with a concentration of 1 mol / L for 800 seconds. Then the membrane was cleaned with deionized water and dried with inert gas to obtain a polydimethylsiloxane membrane with a thickness of 300 μm.

[0036] 2. Preparation of Friction Generator

[0037] The above-mentioned polydimethylsiloxane film is used as the first...

Embodiment 2

[0039] 1. Preparation of Polydimethylsiloxane Membrane

[0040] Add curing agent (Dow Corning 184) to polydimethylsiloxane (Dow Corning) and stir evenly to obtain a mixture, wherein the mass ratio of polydimethylsiloxane to curing agent is 1:1. Doping silicon dioxide particles with a particle diameter of 10nm-300nm into the mixture, the doping amount is 5% by weight, and mixing uniformly to obtain polydimethylsiloxane slurry. The polydimethylsiloxane slurry was doctor-coated on the template, and the film was degassed under vacuum to remove air bubbles in the film, and then baked in a drying oven at 50° C. for 5 hours. Then, the membrane was immersed in ammonia water with a concentration of 0.01 mol / L for 1000 seconds. Then the membrane was cleaned with deionized water and dried with inert gas to obtain a polydimethylsiloxane membrane with a thickness of 300 μm.

[0041] 2. Preparation of Friction Generator

[0042] The above-mentioned polydimethylsiloxane film is used as th...

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Abstract

The invention provides a method for preparing a polydimethylsiloxane film, comprising: adding a curing agent to the polydimethylsiloxane, stirring evenly to obtain a mixture; doping the mixture with negatively charged micro-nano particles on the surface Polydimethylsiloxane slurry is obtained; the polydimethylsiloxane slurry is coated on the template, and the film is degassed, and then the film is dried; the film is immersed in an alkaline solution or an alkaline The solution is sprayed on it, followed by washing and drying to obtain a polydimethylsiloxane film. The invention also provides the polydimethylsiloxane film prepared by the method and a triboelectric generator using the film. The method of the invention realizes the modification of the polydimethylsiloxane, improves the negative charge of the film, and thus improves the electrical output performance of the triboelectric generator using the polydimethylsiloxane film.

Description

technical field [0001] The invention relates to the field of polymer films, in particular to a preparation method for a polydimethylsiloxane film used in a triboelectric generator, a polydimethylsiloxane film prepared by the method and an application thereof. Background technique [0002] There is a large amount of mechanical energy that can be used in people's living environment and industrial production. Since Michael Faraday discovered the phenomenon of electromagnetic induction in 1831, the electromagnetic induction generator has become the most important and extensive way of generating electricity. Up to now, there is no other way of generating electricity that can match it. shoulder to shoulder. In recent years, the triboelectric nanogenerator invented by the research team of Academician Wang Zhonglin provides a new method of using mechanical energy to generate electricity. Its principle is based on the phenomenon of triboelectricity and electrostatic induction. Power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C41/12B29C41/34H02N1/04B29K83/00B29L7/00
CPCB29C41/12B29C41/34B29K2083/00B29L2007/00H02N1/04
Inventor 徐启远丁超崔婧
Owner NAZHIYUAN TECH TANGSHAN LLC
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