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Elastic heater and preparation method thereof

A heater and elastic technology, applied in ohmic resistance heating parts, equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, etc., can solve the problems of non-deformable and non-elastic physiotherapy heaters, etc., to achieve The resistance change is small, the preparation method is simple and efficient, and the effect of ensuring heating stability

Pending Publication Date: 2021-11-26
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the physiotherapy heater is not elastic and cannot be deformed with the movement of joints and other parts

Method used

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  • Elastic heater and preparation method thereof
  • Elastic heater and preparation method thereof
  • Elastic heater and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the structure of the elastic heater is as figure 1 As shown, it is composed of elastic substrate 1, conductive material 2, electrode 3, and encapsulation layer 4. Two electrodes 3 are symmetrically covered on both ends of the elastic substrate; conductive material 2 is attached to the elastic substrate not covered by electrodes On the top, the stripe spacing of the mesh stripes is about 200 μm, and the elastic substrate 1 , the conductive material 2 and the electrode 3 are provided with an encapsulation layer 4 .

[0034] Among them, the elastic substrate 1 is a polydimethylsiloxane film, which is stretchable and non-conductive; the conductive material 2 is a gallium-indium alloy liquid metal; the electrode 3 is made of a gallium-indium alloy liquid metal, and the encapsulation layer 4 is polydimethylsiloxane base siloxane film.

[0035] Due to the good transparency of the polydimethylsiloxane film and the gallium-indium alloy liquid metal, the elas...

Embodiment 2

[0044] In this embodiment, the elastic heater is composed of an elastic substrate, a conductive material, an electrode, and an encapsulation layer, and the two electrodes are symmetrically covered on both ends of the elastic substrate; the conductive material is attached to the elastic substrate not covered by the electrodes in a mesh stripe , the stripe spacing of the mesh stripes is about 20 μm, and the elastic substrate, the conductive material and the electrodes are provided with an encapsulation layer.

[0045] Among them, the elastic substrate is polydimethylsiloxane film, which is stretchable and non-conductive; the conductive material is gallium indium tin alloy liquid metal; the electrode is made of gallium indium alloy liquid metal, and the packaging layer is polydimethylsiloxane alkane film.

[0046] Due to the good transparency of the polydimethylsiloxane film, the gallium indium tin alloy liquid metal and the gallium indium tin alloy liquid metal, the elastic heat...

Embodiment 3

[0052] In this embodiment, the elastic heater is composed of an elastic substrate, a conductive material, an electrode, and an encapsulation layer, and the two electrodes are symmetrically covered on both ends of the elastic substrate; the conductive material is attached to the elastic substrate not covered by the electrodes in a mesh stripe , the stripe spacing of the mesh stripes is about 800 μm, and the elastic substrate, conductive material and electrodes have encapsulation layers.

[0053] Among them, the elastic substrate is polyethylene terephthalate film, which is stretchable and non-conductive; the conductive material is polypyrrole; the electrodes are made of graphene, and the packaging layer is polyethylene terephthalate film.

[0054] The preparation method of the elastic heater comprises the following steps:

[0055] (1) symmetrically evenly coat graphene on both ends of the polyethylene terephthalate film upper surface to form electrodes;

[0056] (2) pre-stretch ...

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Abstract

The invention discloses an elastic heater. The elastic heater comprises an elastic substrate, electrodes and a conductive material. The elastic substrate adopts a non-conductive stretchable film, the electrodes symmetrically cover two ends of the elastic substrate, and a conductive material is attached to the elastic substrate which is not covered by the electrodes. The invention also discloses a preparation method of the elastic heater. The preparation method comprises the following steps: (1) symmetrically and uniformly coating or depositing electrode materials at two ends of the upper surface of the elastic substrate to form electrodes; (2) pre-stretching the elastic substrate, and uniformly coating or depositing a conductive material on the upper surface, which is not covered by the electrode, of the elastic substrate in a stretched state; and (3) releasing the pre-stretching, and packaging to form a packaging layer. The elastic heater is simple in structure and preparation method, good in transparency, good in heating performance and capable of keeping stable heating performance when large deformation occurs.

Description

technical field [0001] The invention relates to the technical field of heaters, in particular to an elastic heater and a preparation method thereof. Background technique [0002] The elastic heater is to prepare a stretchable conductive circuit on an elastic substrate to realize the heating function. According to Joule's law, the conductive material generates heat under the action of an external current, which can be used for working in severe cold environments, personal thermal management, and wearable heating. fields of physiotherapy. Thermal physiotherapy can effectively relieve joint pain and other diseases, but the deformation of joints and other parts is large when they are bent, so it is of great significance that the heater can keep working when large deformation occurs. [0003] Traditional thermal physiotherapy patches are not elastic. For some patients with joint pain, the patch will heat unevenly or even fail when the joint is bent. How to ensure the normal joi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/02H05B3/03H01B5/14H01B13/00
CPCH05B3/02H05B3/03H01B5/14H01B13/0026
Inventor 刘宜伟王正平巫远招李润伟王艺范杨梦宇何志豪李法利
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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