A fatty acid/sebs stretchable composite film with enhanced triboelectric output, its preparation method and application

A fatty acid, composite membrane technology, applied in triboelectric generators, applications, chemical instruments and methods, etc., can solve problems such as poor triboelectric performance, achieve excellent flexibility, expand practical application fields, and easily achieve large-scale production.

Active Publication Date: 2022-04-26
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its poor triboelectric properties, triboelectric nanogenerators using SEBS as a triboelectric material have been rarely reported so far.

Method used

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  • A fatty acid/sebs stretchable composite film with enhanced triboelectric output, its preparation method and application
  • A fatty acid/sebs stretchable composite film with enhanced triboelectric output, its preparation method and application
  • A fatty acid/sebs stretchable composite film with enhanced triboelectric output, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, comprising the following steps:

[0033] 1) Dissolve 4 g of hydrogenated styrene-butadiene block copolymer (SEBS) in 16 g of solvent toluene, wherein the mass fraction of SEBS is 20 wt.%; then add 0.02 g of oleic acid to the above solution; mix After being uniform, the casting solution for preparing the oleic acid / SEBS stretchable composite film is obtained;

[0034] Wherein, the content of oleic acid is 0.5 wt.% of SEBS quality;

[0035] 2) A 1000 μm squeegee rod was used to scrape a film on a glass substrate, and after drying at room temperature, an oleic acid / SEBS stretchable composite film with a thickness of about 350 μm was obtained.

Embodiment 2

[0037] A method for preparing a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, comprising the following steps:

[0038] 1) Dissolve 3 g of SEBS in 17 g of solvent toluene, wherein the mass fraction of SEBS is 15 wt.%; then add 0.06 g of n-decanoic acid to the above solution; mix well to prepare n-decanoic acid / SEBS Casting solution for stretching composite film;

[0039] Wherein, the content of n-decanoic acid is 2.0 wt.% of SEBS quality;

[0040] 2) Use a 500 μm squeegee bar to draw a film on a glass substrate. After drying at room temperature, a n-decanoic acid / SEBS stretchable composite film with a thickness of about 165 μm is obtained.

Embodiment 3

[0042] A method for preparing a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, comprising the following steps:

[0043] 1) Dissolve 5 g of SEBS in 15 g of solvent toluene, wherein the mass fraction of SEBS is 25 wt.%; then add 0.075 g of stearic acid to the above solution; after mixing evenly, the stearic acid / SEBS can be prepared Casting solution for stretching composite film;

[0044] Wherein, the content of stearic acid is 1.5 wt.% of SEBS quality;

[0045] 2) Use a 250 μm squeegee bar to draw a film on a glass substrate, and after drying at room temperature, a stearic acid / SEBS stretchable composite film with a thickness of about 100 μm is obtained.

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Abstract

The invention discloses a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, its preparation method and application. The stretchable composite film contains two materials of fatty acid and SEBS, and is simple to operate and easy for large-scale industrial production prepared by the solution scraping process. Among them, compared with the functional groups constituting SEBS, the COOH group in fatty acid has higher electronegativity; the introduction of fatty acid can change the triboelectricity and charge retention ability of SEBS film, thereby greatly improving the triboelectric nanogenerator. output performance. Compared with the triboelectric nanogenerator based on the pure SEBS stretchable film triboelectric pair, the output performance of the triboelectric nanogenerator based on the fatty acid / SEBS stretchable composite film triboelectric pair developed by the present invention can reach up to 3.28 times. In addition, the fatty acid / SEBS stretchable composite film developed in the present invention also has excellent flexibility, stretch recovery, and transparency.

Description

technical field [0001] The invention relates to the technical field of triboelectric nanopower generation, in particular to a fatty acid / SEBS stretchable composite film with enhanced triboelectric output, its preparation method and application. Background technique [0002] With the rapid development of the Internet of Things (IoT) technology, triboelectric nanogenerators based on triboelectrification and electrostatic inductive coupling effects have gradually shown potential applications in harvesting random, low-frequency environmental mechanical energy to power distributed sensing devices. However, the practical application of triboelectric nanogenerators as energy harvesters that can directly convert environmental mechanical energy into electrical energy depends largely on their own output performance; therefore, from the perspective of expanding their practical application fields, there are It is necessary to further improve the output performance of the triboelectric n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/28B32B27/08B32B7/12B32B27/18H02N1/04B29C41/00B29C41/10
CPCB32B27/308B32B27/281B32B27/302B32B27/08B32B7/12B32B27/18H02N1/04B29C41/003B29C41/10B32B2457/00
Inventor 曹瑞瑞申绍伟赵洋久贾小永牛喜玲
Owner HENAN UNIVERSITY
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