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Elastomer thin film, preparation method thereof and flexible pressure sensor comprising elastomer thin film

A pressure sensor and elastomer technology, applied in the field of pressure sensors, can solve the problems of difficult large-scale industrial production, flexible pressure sensors with narrow linear response range, poor repeatability of preparation methods, etc. The effect of sensitivity

Active Publication Date: 2019-06-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the narrow linear response range of the flexible pressure sensor and the poor repeatability of the preparation method of the flexible pressure sensor in the prior art, and it is difficult to realize large-scale industrial production. Preparation method and flexible pressure sensor comprising the elastomer film

Method used

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  • Elastomer thin film, preparation method thereof and flexible pressure sensor comprising elastomer thin film
  • Elastomer thin film, preparation method thereof and flexible pressure sensor comprising elastomer thin film
  • Elastomer thin film, preparation method thereof and flexible pressure sensor comprising elastomer thin film

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preparation example Construction

[0036] The preparation method of elastomer film of the present invention, comprises the following steps:

[0037] Step 1. Establish a three-dimensional model of a pouring mold with a groove structure through a three-dimensional modeling software, such as figure 1 shown.

[0038]The shape and size of the outer contour of the casting mold are not particularly limited, and may be cuboid, cube, cylinder, etc. Usually, when the shape of the outer contour of the pouring mold is a cuboid or cube, the length is 50-400 mm, the width is 50-400 mm, and the height is 2-40 mm; when the shape of the outer contour of the casting mold is a cylinder, the diameter is 50-400 mm. 400mm, the height is 2-40mm. It is preferably a cuboid, with a length of 40 mm, a width of 20 mm, and a height of 5 mm.

[0039] The shape of the groove structure provided on the casting mold is also not particularly limited, and may be cuboid, cube, cylinder, etc., which are specifically selected according to the des...

Embodiment 1

[0063] Step 1. Establish a three-dimensional model of a casting mold with a groove structure through a three-dimensional modeling software. The outer contour of the casting mold is a cuboid, with a length of 40mm, a width of 20mm, and a height of 5mm; the groove structure is a cuboid, and the groove The length of the bottom surface of the structure is 36 mm, the width of the bottom surface of the groove structure is 16 mm, the depth of the groove structure is 1 mm, and the wall thickness of the groove structure is 2 mm.

[0064]Step 2: Process the pouring mold of step 1 by using selective laser sintering technology: first preheat the nylon powder to 172°C, and then use a laser beam with a power of 56W and a path spacing of 0.2mm to print layer by layer to form a casting mold. The horizontal dimension of the surface microstructure of the casting mold is 80-200 μm, the height dimension is 50-100 μm, and the surface roughness of the casting mold is 10-40 μm.

[0065] Step 3, pour...

Embodiment 2

[0068] Step 1. Establish a three-dimensional model of a casting mold with a groove structure through a three-dimensional modeling software. The outer contour of the casting mold is cube-shaped, with a length of 50mm, a width of 50mm, and a height of 5mm; the groove structure is cube-shaped, and the groove The length of the bottom surface of the structure is 46 mm, the width of the bottom surface of the groove structure is 46 mm, the depth of the groove structure is 1 mm, and the wall thickness of the groove structure is 2 mm.

[0069] Step 2: Process the pouring mold of step 1 by using selective laser sintering technology: first preheat the nylon powder to 172°C, and then use a laser beam with a power of 48W and a path spacing of 0.25mm to print layer by layer to form a casting mold. The horizontal dimension of the surface microstructure of the casting mold is 60-150 μm, the height dimension is 60-120 μm, and the surface roughness of the casting mold is 10-20 μm.

[0070] Step...

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Abstract

The invention relates to an elastomer thin film, a preparation method thereof and a flexible pressure sensor comprising the elastomer thin film, belongs to the technical field of pressure sensors, andaims at solving the technical problem that large-scale industrial production is difficult to realize as the flexible pressure sensors are narrow in linear response range and the flexible pressure sensor preparation methods are bad in repeatability in the prior art. According to the preparation method of the elastomer thin film, a three-dimensional model of a casting mould with a groove structureis established through three-dimensional modeling software; the casting mould in the step I is machined by adoption of a selective laser sintering technology; and finally, an elastomer fluid is pouredinto the groove of the casting mould obtained in the step II, and after curing is carried out, a thin film is stripped from the mould so as to obtain the elastomer thin film with a surface microstructure. The contact area and pressure intensity of the elastomer thin film present a favorable linear relationship in a range as high as 200 kPa, so that the wide linear response range and high sensitivity of the flexible pressure sensor can be realized.

Description

technical field [0001] The invention belongs to the technical field of pressure sensors, and in particular relates to an elastic body film, a preparation method thereof and a flexible pressure sensor comprising the elastic body film. Background technique [0002] Wearable flexible pressure sensors can sensitively respond to the pressure generated by human activities, and have broad application prospects in human health monitoring, disease pre-diagnosis, motion monitoring, human-computer interaction, etc., so they have developed rapidly in recent years. The piezoresistive sensor has the characteristics of simple structure and preparation method, high sensitivity, wide detection range, easy to read signal and low energy consumption, and has a good application prospect. It is a very effective way to obtain high-performance flexible sensors by constructing surface microstructures on the surface of flexible films. In previous reports, researchers used silicon templates (Adv. Mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16
Inventor 杨小牛张通李坤李朝阳孙洪国王杰
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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