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Skeleton-wrapping electrothermal functional ceramic, and preparation method and application method thereof

A functional ceramic and packaged technology, which is applied in applications, electric heating devices, clay products, etc., can solve the problem of low utilization rate of electric heating, and achieve the effects of high utilization rate of electric heating, strong safety, and low heat loss

Inactive Publication Date: 2019-11-19
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects and problems of the low utilization rate of electric heating in the prior art, and provide a preparation method, product and application method of skeleton-wrapped electric heating functional ceramics with high utilization rate of electric heating

Method used

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  • Skeleton-wrapping electrothermal functional ceramic, and preparation method and application method thereof
  • Skeleton-wrapping electrothermal functional ceramic, and preparation method and application method thereof
  • Skeleton-wrapping electrothermal functional ceramic, and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] see figure 1 - image 3 , a method for preparing skeleton-wrapped electric heating functional ceramics, comprising the following steps: first weaving single fibers to obtain fabrics, then cutting, stacking and sewing the fabrics to obtain a three-layer stacked blank core skeleton 1, and then The blank core skeleton 1 is wrapped in the ceramic precursor 2, and then pressed and formed at a pressure of 20-100 MPa, then dried to obtain a molded body, and then the molded body is sent into a ceramic kiln, and then the molded body is subjected to oxygen barrier conditions. The sintering is carried out at 1100° C. and the sintering time is 2 hours to obtain the electrothermal functional ceramics.

[0063] Described single fiber is any one in polyacrylonitrile fiber, cellulose fiber, protein fiber, pitch fiber, resin fiber; The manufacturing material of described ceramic precursor 2 is ceramic mud, ceramic powder or the mixture of both, so The ceramic mud is a muddy mixture fo...

Embodiment 2

[0065] Basic content is the same as embodiment 1, the difference is:

[0066] The single fiber is the single fiber after pre-oxidation, the pre-oxidation temperature is 200°C, and the pre-oxidation time is 4 hours; the composition and weight ratio of the ceramic powder are: silicon dioxide 40, trioxide Aluminum 30, remaining material 15; the sintering temperature is 1000°C, and the sintering time is 3h.

Embodiment 3

[0068] Basic content is the same as embodiment 1, the difference is:

[0069] The fabric is the fabric after pre-oxidation, the pre-oxidation temperature is 350°C, and the pre-oxidation time is 4 hours; the composition and weight ratio of the ceramic powder are: silicon dioxide 40, aluminum oxide 10 , Remaining material 20, sintering temperature is 1200 ℃, sintering time is 2.5h.

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Abstract

A preparation method of a skeleton-wrapping electrothermal functional ceramic comprises the following steps: weaving a single fiber to obtain a fabric, wherein the single fiber is any one of a polyacrylonitrile fiber, a cellulose fiber, a protein fiber, an asphalt fiber and a resin fiber; changing the form of the fabric as needed to obtain a blank core skeleton, wherein the changing process includes any one or any combination of cutting, lamination and stitching; wrapping the blank core skeleton with a ceramic precursor to obtain a molded body; feeding the molded body into a ceramic kiln; andsintering the molded body under an oxygen barrier condition to obtain the electrothermal functional ceramic. The product has the advantage of high electrothermal utilization rate, no generation of electromagnetic radiation waves, high security, and suitableness for large-scale production.

Description

technical field [0001] The invention relates to a production technology of functional ceramics, in particular to a preparation method, product and application method of skeleton-wrapped electrothermal functional ceramics, which are particularly suitable for enhancing heat conduction efficiency and improving electric heating utilization. Background technique [0002] Functional ceramics refer to ceramics whose non-mechanical properties are mainly used in applications, and usually have one or more functions. [0003] In traditional underfloor heating, heating wires are usually buried under the tiles (the heating wires are basically composed of metal resistance wires or carbon fibers). The heating wires are energized to generate heat and dissipate the heat into the room through the surface of the tiles to heat and keep the room indoors. The problems of this electric heating process are: ①The utilization rate of electric heating is not high, and interlayer thermal resistance wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/36C04B35/14C04B35/18C04B35/19C04B35/195C04B35/622C04B35/80H05B3/14
CPCC04B33/36C04B35/14C04B35/18C04B35/19C04B35/195C04B35/622H05B3/141C04B2235/616C04B2235/656C04B2235/6567C04B2235/5256C04B2235/5212
Inventor 李岱祺李建强唐彬王金凤
Owner WUHAN TEXTILE UNIV
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