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

Preparation and carbonization method of needle-punched pre-oxidative fiber prefabricated part

A technology of pre-oxidized yarn and prefabricated body, which is applied in textiles and papermaking, heating/cooling fabrics, fabric surface trimming, etc. It can solve the problems of high cost, poor z-direction performance of charcoal discs, broken needles, etc., and achieve stable material performance, Good friction and wear performance, and the effect of reducing production cost

Active Publication Date: 2010-04-07
BEIHANG UNIV
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acupuncture technology is a prefabricated body preparation technology widely used at home and abroad. It solves the disadvantage of poor z-direction performance of carbon discs.
Because the use of carbon fiber as needle felt is easy to cause fiber breakage and needle breakage, the preparation process is complicated and the cost is high, and the modulus of pre-oxygenated yarn is low, and it is not easy to break during the needle punching process, so pre-oxidized yarn is used as the preform Raw materials have become the main trend in the preparation of high-performance carbon-based composites

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
  • Preparation and carbonization method of needle-punched pre-oxidative fiber prefabricated part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] See figure 1 , the present invention is implemented in the carbonization furnace equipment.

[0027] The present invention is a method for preparing and carbonizing an acupuncture pre-oxidized silk prefabricated body. The specific steps of the method are as follows:

[0028] The prefabricated body was prepared by using 12k pre-oxidized wire from Dalian Xingke Carbon Fiber Co., Ltd.

[0029] Step 1: Preparation of the preform. Select the long pre-oxygenated yarn to lay the weft-free cloth, and the chopped pre-oxygenated yarn to lay the mesh tire, one layer of the weft-free cloth and one layer of the mesh tire are stacked, and the two adjacent layers of the weft-free cloth form an angle of 90°, and then layer by layer Acupuncture to make pre-oxygenated silk quasi-three-dimensional prefabricated body.

[0030] Step 2: Carbonization of the prefabricated body. Fix the prefabricated body with a graphite plate 2, put it into the carbonization furnace, close the gas valves ...

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
lengthaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation and carbonization method of a needle-punched pre-oxidative fiber prefabricated part, comprising two steps: step I: the preparation of the prefabricated part; long pre-oxidative fibers are chosen to be paved into a laid fabric, the pre-oxidative fibers are cut short to be paved into a mesh tire; step II: the carbonization of the prefabricated part: the prefabricated part is fixed by a graphite plate 2 and is filled in a carbide furnace, gas valves 8 and 13 are closed, a gas valve 11 is opened, a vacuum pump is started to vacuumize to be below 0.1MPa, and then the valve 11 is closed, the valve 8 is opened, and then high-purity nitrogen is blown in to lead air pressure to be 0.1MPa, temperature programming carbonization is carried out at a certain speed, after the temperature reaches to set temperature, the room temperature is cooled naturally under the protection of nitrogen at normal pressure. The method breaks through the limitation that the carbon matrix composite prefabricated part is prepared domestically by carbon fibers mainly, simplifies the preparation procedures and reduces the preparation cost, and the prepared prefabricated part can well meet the requirements of preparing the high-performance carbon matrix composite material.

Description

(1) Technical field [0001] The invention relates to a preparation and carbonization method of an acupuncture pre-oxidized silk prefabricated body, and belongs to the technical field of carbon-based composite material prefabricated body preparation. (2) Background technology [0002] Carbon fiber-reinforced carbon-based composites are widely used in aerospace and other cutting-edge technical fields due to their unique high-temperature mechanics, thermophysics, and friction and wear properties. The structure and properties of the preform have an important impact on the final performance of the carbon matrix composites. At present, there are three main types of forming technologies for carbon-based composite prefabricated bodies: carbon cloth or needle-punched thin felt lamination, needle-punched carbon fiber (pre-oxygenated filament) quasi-three-way integral structure, and short-fiber resin molding. British Dunlop Company adopts pre-oxidized wire needle-punched thin felt lami...

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
Patent Type & Authority Applications(China)
IPC IPC(8): D04H5/02D04H5/08D06C7/04
Inventor 罗瑞盈章劲草李进松
Owner BEIHANG UNIV
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