Lightweight high-strength heat preservation felt as well as preparation method and application thereof

A high-strength, thermal insulation felt technology, applied in the field of thermal insulation materials, can solve the problems of complex preparation process of thermal insulation carbon felt, poor mechanical properties, easy cracking and delamination, etc. Effect

Active Publication Date: 2021-12-24
ANHUI HONGCHANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the preparation process of the thermal insulation carbon felt in the prior art is complicated, and the mechanical properties are relatively poor, resulting in easy cracking and delamination after use, providing A light-weight and high-strength thermal insulation felt that is simple to prepare and can improve the mechanical properties of carbon felt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A light-weight and high-strength thermal insulation felt comprises a prefabricated soft carbon felt, and the surface of the prefabricated soft carbon felt is covered with a carbon nanotube layer.

[0038] The preparation method of the lightweight high-strength thermal insulation felt specifically comprises the following steps:

[0039] 1) Set the density to 0.01g / cm 3 , The melamine nano-sponge with a thickness of 2cm is spread on the tooling and placed in a carbonization furnace. Under an argon atmosphere, the carbonization furnace is first rapidly heated to 200°C at a heating rate of 10°C / min, and the temperature is kept at a constant temperature for 60 minutes. Raise the temperature to 350°C at a heating rate of 1°C / min, keep the temperature constant for 120 minutes, then raise the temperature to 750°C at a heating rate of 5°C / min, keep the temperature constant for 30 minutes, then raise the temperature to 950°C at a heating rate of 1°C / min, hold the constant tempera...

Embodiment 2

[0044] A light-weight and high-strength thermal insulation felt comprises a prefabricated soft carbon felt, and the surface of the prefabricated soft carbon felt is covered with a carbon nanotube layer.

[0045] The preparation method of the lightweight high-strength thermal insulation felt specifically comprises the following steps:

[0046] 1) Set the density to 0.01g / cm 3 , The melamine nano-sponge with a thickness of 2cm is spread on the tooling and placed in the carbonization furnace. Under the argon atmosphere, the carbonization furnace is first heated up to 250°C at a heating rate of 10°C / min, and the temperature is maintained for 15min. The heating rate of ℃ / min is raised to 400°C, and the temperature is kept constant for 30 minutes, then the temperature is raised to 700°C at a heating rate of 1°C / min, and the temperature is kept constant for 120 minutes. Raise the temperature to 1200°C at a heating rate of 5°C / min, keep the temperature constant for 60 minutes, and th...

Embodiment 3

[0051] A light-weight and high-strength thermal insulation felt comprises a prefabricated soft carbon felt, and the surface of the prefabricated soft carbon felt is covered with a carbon nanotube layer.

[0052] The preparation method of the lightweight high-strength thermal insulation felt specifically comprises the following steps:

[0053] 1) Set the density to 0.01g / cm 3 , The melamine nano-sponge with a thickness of 2cm is spread on the tooling and placed in the carbonization furnace. Under the argon atmosphere, the carbonization furnace is first rapidly heated to 250°C at a heating rate of 10°C / min, and the temperature is maintained for 30min. The temperature was raised to 400°C at a heating rate of 0.6°C / min, kept at a constant temperature for 60 minutes, then raised to 700°C at a heating rate of 3°C / min, kept at a constant temperature for 80 minutes, then raised to 930°C at a heating rate of 0.6°C / min, kept at a constant temperature for 40 minutes, and then heated at a...

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Abstract

The invention discloses a lightweight high-strength heat preservation felt, which relates to the technical field of heat preservation and insulation materials. The lightweight high-strength heat preservation felt comprises a prefabricated soft carbon felt, and the surface of the prefabricated soft carbon felt is covered with a carbon nanotube layer. The invention also provides a preparation method and application of the lightweight high-strength heat preservation felt. The heat preservation felt has the beneficial effects that the surface of the prefabricated soft carbon felt is coated with the carbon nano tube layer, and the carbon nano tube has excellent mechanical property due to the special nano structure of the carbon nano tube. When external force acts on the light high-strength heat preservation felt, the force can be transmitted to the carbon nano tube layer through an interface, the carbon nano tubes bear loads applied to the prefabricated soft carbon felt, the mechanical performance of the carbon nano tubes is effectively applied, the prefabricated soft carbon felt has high toughness, and the mechanical strength of the prefabricated soft carbon felt is integrally improved.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a lightweight high-strength thermal insulation felt and its preparation method and application. Background technique [0002] Holding furnaces include degreasing furnaces, high-temperature carbonization furnaces, low-temperature carbonization furnaces, CVD furnaces, CVI furnaces, etc., and are widely used in chemical, energy, aerospace and other fields, and the heat insulation layer plays a vital role in holding furnaces. Therefore, the thermal insulation blanket with excellent high temperature insulation effect can effectively reduce the heat diffusion in the furnace, reduce heat loss, save energy, and at the same time improve the mechanical strength of the thermal insulation blanket, which can prolong the service life of the thermal insulation blanket. At present, a variety of holding furnaces in my country still use traditional felt insulation materials. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/524C04B35/622C04B38/00
CPCC04B35/524C04B35/622C04B38/0022C04B2235/6562C04B2235/6567C04B2235/614C04B2235/5288C04B2235/77C04B2235/96C04B2235/9607C04B38/0067Y02P20/10
Inventor 肖浩卜宇轩肖孝天张明瑜罗学军宋良芬王峰赵晓燕
Owner ANHUI HONGCHANG NEW MATERIAL CO LTD
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