Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 14 Cited by
  • 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 will easily occur. However, the needling depth and density are undetectable variables, which may easily lead to product failure. The state is unstable; multi-layer composite felt is generally formed by bonding thin felts with a thickness of about 5mm / 10mm according to the required thickness. This kind of composite felt has a simple preparation method, mature raw material technology, short cycle and low cost, but its integrity is poor. , low strength, poor density uniformity, easy toner drop and delamination during use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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
Comparison scheme
Effect test

Embodiment 1

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

[0034] (2) Select polyacrylonitrile-based carbon fiber to prepare 10mm carbon felt and 6K carbon cloth, and 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) Selecting phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating solution, flexible graphite paper with a thickness of 0.6 mm as the surface treatment, roughening the surface of the flexible graphite paper and covering it with a well-shaped gas path;

[0036] (4) Use dipping equipment, if attached figure 1 As shown, let the carbon felt pass through the dipping tank first, and then complete the dipping process under the traction of the double sticks. The distance between the double sticks is controlled to be 50% of the thickness...

Embodiment 2

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

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

[0043] (3) Selecting phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating solution, flexible graphite paper with a thickness of 0.6 mm as the surface treatment, roughening the surface of the flexible graphite paper and covering it with a well-shaped gas path;

[0044] (4) Use dipping equipment, if attached figure 1 As shown, let the carbon felt pass through the dipping tank first, and then complete the dipping process under the traction of the double sticks. The distance between the double sticks is controlled to be 40% of the thickn...

Embodiment 3

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

[0050] (2) Select polyacrylonitrile-based carbon fibers to prepare 5mm and 10mm carbon felts and 6K carbon cloths, and the volume density of carbon felts is 0.20g / cm 3 , 6K carbon cloth surface density is 280g / m 2 , the preparation method is plain weave. ;

[0051](3) Selecting phenolic resin with a solid content of 45% and a viscosity of 12mpa.s as the impregnating solution, flexible graphite paper with a thickness of 0.6 mm as the surface treatment, roughening the surface of the flexible graphite paper and covering it with a well-shaped gas path;

[0052] (4) Use dipping equipment, if attached figure 1 As shown, let the carbon felt pass 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 be 70% of t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Bulk densityaaaaaaaaaa
Cloth densityaaaaaaaaaa
Bulk densityaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com