Pre-oxidation furnace

A technology of pre-oxidation furnace and furnace body, which is applied to the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of decreased mechanical properties of carbon fibers, low mechanical properties of carbon fibers, and poor sealing performance of the oxidation furnace, and achieves improved tensile properties, The effect of uniform pre-oxidation and reduction of mechanical friction damage

Active Publication Date: 2015-06-03
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the double diffusion process of the carbon fiber precursor is from the surface to the inside during solidification into fibers, it has a slight skin-core structure; and the existing pre-oxidation furnace is also carried out from the surface to the inside during the pre-oxidation process, so The pre-oxidation process will intensify the skin-core structure, and the skin-core structure of the pre-oxidized wire will eventually cause the mechanical properties of carbon fibers to gradually decrease from th

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
  • Pre-oxidation furnace
  • Pre-oxidation furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a pre-oxidation furnace includes a furnace body shell 1, a roller 2 and two furnace end humidifying devices 3, the furnace end humidifying devices 3 are located at both ends of the furnace body shell 1, and the furnace end humidifying device 3 is provided with a humidifying tube 6 for humidifying The pipe 6 is provided with a humidifying hole 7, and the humidifying pipe 6 is connected with the pipeline pump 8 through the connecting pipe 10, and the pipeline pump 8 is connected with the humidification liquid storage tank 9 through the connecting pipe 10, and the connecting pipe 10 is provided with a switching valve 13.

[0025] When in use, the humidifying pipe 6 is located above each layer of tow through the spray humidification method, and the humidifying liquid sprays and humidifies the fibers from top to bottom through the humidifying holes 7 .

[0026] The humidification tubes 6 are separated by partitions 12 , and the bottom of the partit...

Embodiment 2

[0030] Such as figure 2 As shown, a pre-oxidation furnace includes a furnace body shell 1, a roller 2 and two furnace end humidifying devices 3, the furnace end humidifying devices 3 are located at both ends of the furnace body shell 1, and the furnace end humidifying device 3 is provided with a humidifying tube 6 for humidifying The tube 6 is provided with a humidifying hole 7, the humidifying tube 6 is connected to the ultrasonic nebulizer 15 through the connecting pipeline 10, the ultrasonic nebulizer 15 is connected to the pipeline pump 8 through the connecting pipeline 10, and the pipeline pump 8 is connected to the humidifying liquid storage through the connecting pipeline 10. Tank 9 is connected.

[0031] A partition 12 is arranged between each humidifying tube, and a waste liquid discharge port 11 is provided at the bottom of the partition 12 and the furnace end humidifier 3 , and the residual humidifying liquid can be gradually discharged through the waste liquid dis...

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

No PUM Login to view more

Abstract

The invention discloses a pre-oxidation furnace. The pre-oxidation furnace comprises a furnace body shell, a roller, a circulating fan and an exhaust fan, wherein the circulating fan and the exhaust fan are connected with the furnace body shell by virtue of connecting pipelines, two ends of the furnace body shell are provided with furnace end humidifying devices, a humidifying pipe is arranged inside each furnace end humidifying device, a humidifying hole is formed in the humidifying pipe, and each humidifying pipe is connected with a humidifying liquid storage tank by virtue of a connecting pipeline. Two ends of the pre-oxidation furnace are provided with the furnace end humidifying devices, so that in the pre-oxidation production process, the mechanical abrasion and damage of carbon fibers can be greatly reduced, the quantity of broken filaments on the surface of the carbon fibers can be greatly reduced, a pre-oxidized filament obtained by pre-oxidizing carbon fiber crude filaments by virtue of the pre-oxidation furnace basically has no skin-core structure or has a slightly skin-core structure, the tensile strength and the tensile elastic modulus of the carbon fibers prepared by carbonizing the pre-oxidized filament are greatly improved, and the carbon fibers are not prone to break.

Description

technical field [0001] The invention relates to the field of carbon fiber production equipment, in particular to a pre-oxidation furnace. Background technique [0002] In the middle and late 20th century, carbon fiber began to be widely used in aerospace, sporting goods and other fields due to its excellent performance as a fiber-reinforced composite material. The carbon fiber manufacturing process includes pre-oxidation, carbonization, surface treatment and other steps, and each step has an important impact on the quality of carbon fiber. High-performance, high-quality carbon fiber requires the performance of the product to maintain good uniformity and stability. For the production of high-performance carbon fibers, the performance and uniformity of raw materials in the production process, the production conditions of each step of pre-oxidation and carbonization, and the stability of production equipment all directly determine the final performance of carbon fiber products...

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): D01F9/12
Inventor 雷震宋威陈大华蔡彤旻黄险波
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap