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A kind of silicon-based ceramic micro-nano fiber thermal insulation felt and preparation method thereof

A nanofiber and ceramic microtechnology, applied in the field of material science and engineering, can solve problems such as the need for binders, and achieve the effects of low cost, overcoming preparation difficulties, and easy mass industrial production.

Active Publication Date: 2022-08-02
佛山市中柔材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a silicon-based ceramic micro-nano fiber thermal insulation felt and its preparation method, aiming to solve the problem that existing inorganic thermal insulation materials need binders

Method used

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  • A kind of silicon-based ceramic micro-nano fiber thermal insulation felt and preparation method thereof
  • A kind of silicon-based ceramic micro-nano fiber thermal insulation felt and preparation method thereof
  • A kind of silicon-based ceramic micro-nano fiber thermal insulation felt and preparation method thereof

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Effect test

Embodiment 1

[0061] In this embodiment, the specific preparation method is as follows: firstly prepare a mixed solution of raw materials, firstly seal tetraethyl silicate, tetrabutyl titanate, water and acetic acid in a mass ratio of 1:0.5:9:0.01 Mix evenly in the bottle, then add the PEO powder particles into the uniformly mixed solution and continue to seal and stir for 8 hours. The nanometer graphene oxide sheet accounts for 3% of the weight of the organic salt, and the liquid sodium silicate accounts for 2% of the weight of the organic salt. Extract a certain amount of uniform raw material mixed solution and inject it into the liquid storage tank, control the rotational speed of the motor to 4000 rpm, and use the centrifugal force generated by the high-speed rotation of the liquid storage tank to spray the solution from the small needle installed on the liquid storage tank. The resulting solution is rapidly stretched in the air to form viscous solution filaments, and the solvent in the...

Embodiment 2

[0064] In this embodiment, the specific preparation method is as follows: firstly prepare a mixed solution of raw materials, firstly put tetraethyl silicate, tin tetrachloride, water and acetic acid in a sealed bottle according to the mass ratio of 1:0.3:11:0.01 Mix well, then add the PEO powder particles into the uniformly mixed solution and continue to seal and stir for 8 hours, the mass percentage of PEO in the raw material mixed solution is 8%, and then add nano graphene oxide sheets and liquid sodium silicate. The nanometer graphene oxide sheet accounts for 4% of the weight of the organic salt, and the liquid sodium silicate accounts for 3% of the weight of the organic salt. Extract a certain amount of uniform raw material mixed solution and inject it into the liquid storage tank, control the rotational speed of the motor to 8000rpm, and use the centrifugal force generated by the high-speed rotation of the liquid storage tank to spray the solution from the small needle ins...

Embodiment 3

[0067] In this embodiment, the specific preparation method is as follows: firstly prepare a mixed solution of raw materials, first put tetraethyl silicate, water, ethanol and acetic acid in a sealed bottle in a mass ratio of 1:0.2:11:1:0.01 Mix evenly, then add the PVA powder particles into the mixed solution, continue to seal and stir for 2 hours under the condition of a water bath at 80 ° C, the mass percentage of PVA in the raw material mixed solution is 30%, and then add nano graphene oxide sheets and liquid sodium silicate, the nano graphene oxide sheet accounts for 4% by weight of the organic salt, and the liquid sodium silicate accounts for 5% by weight of the organic salt. Extract a certain amount of uniform raw material mixed solution and inject it into the liquid storage tank, control the rotational speed of the motor to 8000rpm, and use the centrifugal force generated by the high-speed rotation of the liquid storage tank to spray the solution from the small needle in...

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Abstract

The invention discloses a silicon-based ceramic micro-nano fiber thermal insulation felt and a preparation method thereof, comprising the following steps: preparing a raw material mixed solution, the raw material mixed solution including organic salts, high molecular polymers and a solvent; using a centrifugal spinning device The raw material mixed solution is spun into a silicon-based ceramic micro-nano fiber material precursor; the silicon-based ceramic micro-nano fiber material precursor is collected, stacked to form a felt state, and a silicon-based ceramic micro-nano fiber felt precursor is obtained; The fiber felt precursor is sintered at high temperature to obtain a silicon-based ceramic micro-nano fiber thermal insulation felt. The silicon-based ceramic micro-nano fiber thermal insulation felt prepared by the method of the invention has the characteristics of low density, high temperature resistance and the like, and can be used in the field of thermal insulation.

Description

technical field [0001] The invention relates to the fields of material science and engineering, and mainly relates to a silicon-based ceramic micro-nano fiber thermal insulation felt and a preparation method thereof. Background technique [0002] Thermal insulation materials used in the construction field can be divided into inorganic thermal insulation materials and organic thermal insulation materials. Organic thermal insulation materials have poor high heat resistance performance, and will decompose when exposed to open fire, releasing a large amount of heat and toxic gases, and also emit formaldehyde and other harmful gases during application. Compared with organic thermal insulation materials, inorganic thermal insulation materials have strong high temperature resistance and relatively stable thermochemical properties. For safety production and life and environmental protection considerations, organic thermal insulation materials are gradually being replaced by inorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/10C04B35/622
CPCC04B35/62227C04B35/622C04B2235/656C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/77C04B2235/9607
Inventor 李臻周剑
Owner 佛山市中柔材料科技有限公司
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