Wave absorbing composite nano-fiber material textile composition and its preparation process

A composite fiber and nano-textile technology, applied in the manufacture of conductive/antistatic filaments, etc., can solve the problems of shielding performance of electromagnetic wave shielding materials, restricted promotion prospects, low absorption rate, secondary pollution, etc., and can shorten the production process and scope. Wide, cost-saving effect

Inactive Publication Date: 2004-11-10
西安华捷科技发展有限责任公司
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic electromagnetic wave shielding materials are mainly copper wire mesh, metal fiber, core-spun yarn, etc. This product is mainly based on reflection, and the absorption rate is low, causing secondary pollution
Military shielding rooms often need to be made of steel plates with a thickness of about 3 cm, but these electromagnetic wave shielding materials are restricted in terms of shielding performance and promotion prospects.

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
  • Wave absorbing composite nano-fiber material textile composition and its preparation process
  • Wave absorbing composite nano-fiber material textile composition and its preparation process
  • Wave absorbing composite nano-fiber material textile composition and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The composition of the present invention contains polyacrylonitrile carbon 80~96% by weight, nanometer beta-silicon carbide 4~20%; Nickel powder consumption is 1~20% of fiber weight, auxiliary agent 5~8%, auxiliary agent is For methyl formamide, the pre-oxidation time is 220-240 minutes, the oxidation temperature is 240°C-280°C, the carbonization temperature is 1300°C-1400°C, the carbonization time is 9 minutes-10 minutes, and the inert atmosphere treatment temperature is 2500°C-2800°C °C, the time is 6 seconds to 8 seconds.

Embodiment 2

[0055] According to the weight ratio, the composition contains 85-94% of polyacrylonitrile carbon, 8-17% of nanometer β-silicon carbide; the amount of nickel powder is 5-15% of the fiber weight, 6-8% of auxiliary agent, and the auxiliary agent is methyl For formamide, the pre-oxidation time is 220-240 minutes, the oxidation temperature is 260°C-270°C, the carbonization temperature is 1300°C-1350°C, the carbonization time is 9 minutes-10 minutes, and the inert atmosphere treatment temperature is 2600°C-2700°C. The time is 6 seconds to 8 seconds.

Embodiment 3

[0057] According to the weight ratio, the composition contains 89-92% of polyacrylonitrile carbon, 10-14% of nano-beta silicon carbide; the amount of nickel powder is 2-10% of the fiber weight, and the auxiliary agent is 7-8%, and the auxiliary agent is methyl For formamide, the pre-oxidation time is 220-230 minutes, the oxidation temperature is 250°C-2650°C, the carbonization temperature is 1300°C-1360°C, the carbonization time is 7-8 minutes, and the inert atmosphere treatment temperature is 2550°C-2650°C. 6 to 7 seconds.

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
electrical resistivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a composite fiber material, and the combination contains polyacrylonitrile carbon 80-96, nano silicon carbide 4-20%; nickel powder is 6-20% of the fiber in weight, assistant 5-8%. The steps: making ultrasonic wave vibration, mixing and extrusion on silicon carbide, polyacrylonitrile carbon and assistant to produce compound particles; making copolymerization and commixture on copolymerizable monomer to make polyacrylonitrile carbon wave absorbing fiber; spinning silicon carbide/nickel fiber; making preoxidation, carbonization, graphitization, surface nickel processing and weaving on the spinning to obtain the finished product. It has wide screened wave bands, and high electromagnetic wave absorbing rate, has no secondary pollution. It shortens working procedure, reduces cost, and has the characters of high strength, high modulus, low expansion coefficient, etc.

Description

technical field [0001] The invention relates to a composite fiber material, in particular to a wave-absorbing composite nanofiber material textile composition and a preparation method. Background technique [0002] At the end of the 20th century, the rapid development of science and technology led to the emergence of material science, which has become one of the three pillars of modern civilization along with energy technology and information technology. At the beginning of the 21st century, developing countries have successively invested a lot of manpower and financial resources in material science, especially in the fields of aerospace, aviation, transportation, construction, etc., which have put forward higher requirements for the materials used, among which the demand for high-tech fibers Every day. [0003] At present, fiber raw materials are developing towards differentiation, functionality and high performance. For example, differentiated fibers such as hollow fiber...

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): D01F1/09D01F9/22
Inventor 高建中
Owner 西安华捷科技发展有限责任公司
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