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Heating temperature sensing layer, carbonized fabric-based flexible heating element and preparation method and application of carbonized fabric-based flexible heating element

A temperature-sensing layer, high-temperature carbonization technology, applied in heating/cooling fabrics, electrical components, ohmic resistance heating, etc., can solve problems such as poor durability, flexible heating elements that are easy to bend and break, achieve good electrical conductivity, and improve heating uniformity. performance and durability, soft-touch effect

Active Publication Date: 2022-03-04
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a heating temperature-sensing layer for the flexible heating element in the prior art, which is easy to bend and break, has poor durability, and heating uniformity needs to be improved.

Method used

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  • Heating temperature sensing layer, carbonized fabric-based flexible heating element and preparation method and application of carbonized fabric-based flexible heating element
  • Heating temperature sensing layer, carbonized fabric-based flexible heating element and preparation method and application of carbonized fabric-based flexible heating element
  • Heating temperature sensing layer, carbonized fabric-based flexible heating element and preparation method and application of carbonized fabric-based flexible heating element

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Such as figure 1 As shown, a heating temperature-sensitive layer includes a secondary carbonized fabric 5, a temperature sensor 3 that is insulated on the surface of the secondary carbonized fabric 5, and two electrodes that are electrically connected to the secondary carbonized fabric 5 4, wherein, each electrode 4 is connected with a wire 13, and the secondary carbonization treatment fabric 5 is prepared by the following method:

[0062] Step 1, pretreating the fabric 7 to be carbonized, and then subjecting the pretreated fabric 7 to be carbonized to high-temperature carbonization to obtain a carbonized fabric 8, the carbonized fabric 8 is a conductive heating material for the heating temperature-sensing layer, and is Surface heating element. The constituent materials of the fabric are natural fiber fabrics, regenerated cellulose fiber fabrics or acrylic fabrics, the tissue structure of the fabrics is woven fabrics, knitted fabrics or non-woven fabrics, and the natur...

Embodiment 2

[0070] On the basis of Example 1, such as figure 2 As shown, the way of pretreatment in the step 1 is that the fabric 7 to be carbonized is ultrasonically treated in acetone for 1 h, then the fabric is repeatedly washed with absolute ethanol and distilled water to remove organic substances and impurities, ultrasonically 10 min with distilled water, and then heated at 60 Dry at ℃ for 6h for later use.

[0071] In this embodiment, in step 1, the composition material of the fabric is cotton fabric, and the structure of the fabric is plain woven fabric. The carbonized fabric 8 is obtained by high-temperature carbonization in a tube furnace. The carbonization process parameters are set as follows: the carbonization temperature is 1000°C, the heating rate is 3°C / min, the holding time is 1h, and the carbonization process is continuously fed with nitrogen. The carbonization SEM image of cotton fabric 8 as image 3 As shown, its organizational structure remains intact.

[0072] Whe...

Embodiment 3

3.1

[0087] A carbonized fabric-based flexible heating element based on the heating temperature-sensing layer, such as Figure 4 As shown, it consists of the following steps:

[0088] Step S1, covering the surface of the substrate 6 sequentially with the hot-melt adhesive or adhesive interlining 2, the heating and temperature-sensitive layer 12, the hot-melt adhesive or adhesive interlining 2 and the covering fabric 1 to form a composite layer, or the substrate 6 and the covering fabric 1 using A single-sided adhesive interlining, the surface of the single-sided adhesive interlining sequentially covers the heating and temperature-sensing layer 12 and the single-sided adhesive interlining to form a composite layer.

[0089] In step S2, the composite layer is bonded and fixed by hot pressing to form a carbonized fabric-based flexible heating element.

[0090] Specifically, such as Figure 5-6 As shown, a base 6 and a covering fabric 1 are provided, and the surface of the base 6...

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Abstract

The invention discloses a heating temperature sensing layer, a carbonized fabric-based flexible heating element and a preparation method and application of the carbonized fabric-based flexible heating element, and the heating temperature sensing layer comprises a secondarily-treated carbonized fabric, a temperature sensor arranged on the surface of the secondarily-carbonized fabric in an insulating manner, and two electrodes electrically connected with the secondarily-carbonized fabric, each electrode is connected with a wire, the heating temperature sensing layer adopts the combination of a carbonized fabric and a polymer material, so that the strength and flexibility of the carbonized fabric are improved, the prepared flexible heating element is soft in hand feeling and good in conductivity, and meanwhile, the heating temperature sensing layer has good heating uniformity and durability.

Description

technical field [0001] The invention relates to the technical field of heating elements, in particular to a heating temperature-sensing layer, a carbonized fabric-based flexible heating element and a preparation method and application thereof. Background technique [0002] In a cold environment, people usually use passive heat-resisting traditional thermal products to resist the severe cold, but such products are thick and bloated, have limited cold protection effect, and also affect the comfort and aesthetics of wearing. Active heat-generating flexible electric heating elements use the principle of Joule heating to generate heat, and their performance directly affects the safety and comfort of heated clothing. [0003] Common flexible heating elements on the market are usually made of linear conductive materials such as metal wire (such as stainless steel wire, silver-plated yarn) and carbon fiber through weaving, knitting and embroidery. It is easy to bend and break durin...

Claims

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Application Information

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IPC IPC(8): H05B3/34D06M15/564D06C7/04
CPCH05B3/342D06M15/564D06C7/04
Inventor 刘皓王探宇倪海粟
Owner TIANJIN POLYTECHNIC UNIV
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