Method for preparing net-size C/C composite heat-preservation hard felt

A technology of composite heat preservation and net size, which is applied in the field of composite hard felt preparation, can solve the problems of high manufacturing cost, unstable product state, and poor integrity, and achieve the effects of ensuring flatness, shortening the preparation cycle, and reducing process costs

Active Publication Date: 2016-06-29
AEROSPACE RUITIAN CARBON MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the structural form, hard felt can be divided into integral hard felt and composite hard felt. The prefabricated body used in the overall hard felt is a mesh needle-punched structure, which has good integrity, high strength, and long service life. However, its manufacturing cost is high and it is subject to needle punching. The state of needling has a great influence. If the needling is too deep, the thermal insulation performance of the material will be poor. If the needling is uneven, large-area cracking

Method used

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  • Method for preparing net-size C/C composite heat-preservation hard felt
  • Method for preparing net-size C/C composite heat-preservation hard felt

Examples

Experimental program
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Example Embodiment

[0032] Example one

[0033] (1) According to the product specifications, first prepare the thickness gauge, the thickness gauge size is 40±0.02mm, and the pressure that can withstand is ≥2MPa;

[0034] (2) Select polypropylene acrylic carbon fiber to prepare 10mm carbon felt and 6K carbon cloth, the volume density of carbon felt is 0.10g / cm 3 , 6K carbon cloth surface density is 280g / m 2 , The preparation method is plain weave;

[0035] (3) Choose phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating liquid, and 0.6mm thick flexible graphite paper as the surface treatment, and roughen the surface of the flexible graphite paper and cover the well-shaped air path;

[0036] (4) Adopt dipping equipment, as attached figure 1 As shown, let the carbon felt go through the dipping tank first, and then complete the dipping process under the traction of the double sticks, and control the distance between the double sticks to 50% of the carbon felt thickness; re...

Example Embodiment

[0040] Embodiment two

[0041] (1) According to the product specifications, first prepare the thickness gauge, the thickness gauge size is 20±0.02mm, and the pressure that can withstand is ≥2MPa;

[0042] (2) Select polypropylene acrylic carbon fiber to prepare 10mm carbon felt and 6K carbon cloth, the volume density of carbon felt is 0.15g / cm 3 , 6K carbon cloth surface density is 280g / m 2 , The weaving method is plain weave. ;

[0043] (3) Choose phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating liquid, and 0.6mm thick flexible graphite paper as the surface treatment, and roughen the surface of the flexible graphite paper and cover the well-shaped air path;

[0044] (4) Adopt dipping equipment, as attached figure 1 As shown, let the carbon felt go through the dipping tank first, and then complete the dipping process under the traction of the double sticks, and control the distance between the double sticks to 40% of the carbon felt thickness; ...

Example Embodiment

[0048] Embodiment three

[0049] (1) According to the product specifications, first prepare the thickness gauge, the thickness gauge size is 65±0.02mm, and the pressure that can withstand is ≥2MPa;

[0050] (2) Select polypropylene acrylic carbon fiber to prepare 5mm and 10mm carbon felt, 6K carbon cloth, the volume density of carbon felt is 0.20g / cm 3 , 6K carbon cloth surface density is 280g / m 2 , The weaving method is plain weave. ;

[0051] (3) Choose phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating liquid, and 0.6mm thick flexible graphite paper as the surface treatment, and roughen the surface of the flexible graphite paper and cover the well-shaped air path;

[0052] (4) Adopt dipping equipment, as attached figure 1 As shown, let the carbon felt go through the dipping tank first, and then complete the dipping process under the traction of the double sticks, and control the distance between the double sticks to 70% of the carbon felt thic...

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Abstract

The invention relates to a method for preparing a net-size C/C composite material composite heat-preservation hard felt, wherein the method comprises the following steps: preparing a thickness gauge; selecting carbon fibers, and preparing a carbon felt and carbon cloth; selecting resin as an immersion liquid and flexible graphite paper as a surface treatment substance; carrying out glue immersion treatment of the carbon felt, the carbon cloth and the flexible graphite paper respectively; laminating the carbon felt, the carbon cloth and the flexible graphite paper, and carrying out curing molding; and carrying out carbonization and high temperature purification treatment on the obtained cured and molded product. The method has the advantages of simple operation, low cost, short period, good air separation performance, high mechanical strength and good product consistency.

Description

technical field [0001] The invention relates to a preparation method of a composite hard felt, in particular to a preparation method of a C / C composite material composite hard felt for high-temperature industrial furnaces. Background technique [0002] Carbon / carbon composite insulation felt is widely used in high-temperature industrial equipment such as monocrystalline silicon growth furnaces, polycrystalline silicon ingot furnaces, and sintering furnaces. Its performance and life are critical to the energy consumption, cost control, and product quality of high-temperature industrial equipment. effect. Insulation blankets are divided into two types: soft felts and hard felts. Soft felts have no fixed shape and are generally used in furnaces that have a relatively large space in the furnace and are not often disassembled. Hard felts can be designed into products of precise dimensions. It can be directly assembled with fasteners, etc., and the assembly is simple. At present...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/622
Inventor 陈小飞姜召阳杨村林韩钢张荣超张贵岐崔树永
Owner AEROSPACE RUITIAN CARBON MATERIALS CO LTD
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