Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of activated carbon fiber hole expansion method

A technology of activated carbon fiber and protective gas, which is applied in the chemical characteristics of fibers, textiles and papermaking, chemical post-processing of rayon, etc., can solve the problems of complex process, influence of activated carbon fiber structure, poor control of safety, etc., and achieves application prospects Good effect, little effect on fiber basic structure and properties, high load capacity

Active Publication Date: 2022-04-29
南通森友炭纤维有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned pore-enlarging methods can realize the pore-enlarging treatment of activated carbon or activated carbon fibers, they are not very fine in terms of pore structure control, the expansion ratio is not ideal, and the structure of activated carbon fibers after pore expansion will be affected to a certain extent.
In addition, the above-mentioned processes are generally more complicated, and the safety is not easy to control

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
  • A kind of activated carbon fiber hole expansion method
  • A kind of activated carbon fiber hole expansion method
  • A kind of activated carbon fiber hole expansion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Present embodiment provides a kind of viscose-based activated carbon fiber pore expansion method, described method comprises the following steps:

[0037] (1) Select 2 g of viscose-based activated carbon fibers and dry them at 150°C for 2 hours;

[0038] (2) Place the activated carbon fiber after drying in a crucible with a metal tantalum skin as the inner liner. The thickness of the tantalum skin is 0.05mm, and then add 0.03g of magnesium powder. The weight ratio of magnesium powder to activated carbon fiber is 3:200, and the reaction The temperature is 850°C, the reaction atmosphere is nitrogen, and the reaction time is 30 minutes;

[0039] (3) After the reaction is completed, the obtained product is ultrasonically cleaned in deionized water for 1 hour, and then dried at 120° C. for 2 hours to obtain the pore-expanding activated carbon fiber.

[0040] SEM scanning is carried out to the expanded activated carbon fiber that present embodiment prepares, and gained photo...

Embodiment 2

[0046] The present embodiment provides a polyacrylonitrile-based activated carbon fiber hole-enlarging method, the method comprising the following steps:

[0047] (1) 2 g of polyacrylonitrile-based activated carbon fibers were selected and dried at 120 ° C for 3 hours;

[0048] (2) Place the activated carbon fiber after drying in a crucible with a metal tantalum skin as the inner liner. The thickness of the tantalum skin is 0.08mm, then add 0.05g of magnesium powder, the weight ratio of magnesium powder to activated carbon fiber is 1:40, and react The temperature is 1000°C, the reaction atmosphere is helium, and the reaction time is 1 hour;

[0049] (3) After the reaction is completed, the obtained product is ultrasonically cleaned in deionized water for 1.5 hours, and then dried at 120° C. for 2 hours to obtain the pore-expanding activated carbon fiber.

[0050] Test the pore volume and pore diameter of the polyacrylonitrile-based activated carbon fiber selected in this embodi...

Embodiment 3

[0055] The present embodiment provides a kind of pitch-based activated carbon fiber hole expansion method, and described method comprises the following steps:

[0056] (1) Select 2g of pitch-based activated carbon fiber and dry it at 130°C for 2.5 hours;

[0057] (2) Place the activated carbon fiber after drying in a crucible with a metal tantalum skin as the inner liner. The thickness of the tantalum skin is 0.1mm, then add 0.1g of magnesium powder, the weight ratio of magnesium powder to activated carbon fiber is 1:20, and react The temperature is 1200°C, the reaction atmosphere is nitrogen, and the reaction time is 2 hours;

[0058] (3) After the reaction was completed, the obtained product was ultrasonically cleaned in deionized water for 2.5 hours, and then dried at 120° C. for 2 hours to obtain the pore-expanding activated carbon fiber.

[0059] Test the pore volume and pore diameter of the pitch-based activated carbon fiber selected in this embodiment and the prepared ...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for expanding pores of activated carbon fibers. The method comprises: mixing activated carbon fibers and magnesium powder, heating and reacting, and washing after completion of the reaction to obtain pore-expanding activated carbon fibers. The method provided by the invention can achieve fine control of the internal and external pore structure of activated carbon fibers, significantly increase the number and pore volume of macropores, and have little influence on the basic structure and performance of fibers, and the obtained activated carbon fibers after pore expansion and the structure before pore expansion Almost identical. The method provided by the invention can also provide a reliable path for realizing the functionalization of activated carbon fibers, and the obtained expanded-pore activated carbon fibers can be widely used as adsorbents or catalyst carriers in the fields of energy and environmental protection, and have good application prospects.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to the field of carbon fiber preparation, in particular to a method for expanding holes of activated carbon fibers. Background technique [0002] Activated carbon fiber has the characteristics of large specific surface area and many pores, and has a strong adsorption and removal function for harmful gases, liquids, harmful ions, and solid particles, and has a wide range of applications in many fields such as energy and environmental protection. [0003] In the prior art, methods such as water vapor activation, acid-base activation, and porogen treatment are usually used in the preparation process of activated carbon fibers to realize the generation and regulation of the internal pore structure of the fibers. For example, CN107973296A discloses a preparation method of large-pore activated carbon, which uses hydroxide as a pore-enlarging agent dissolved in ethanol, and then high-te...

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 Patents(China)
IPC IPC(8): D01F11/12
CPCD01F11/12
Inventor 姚理荣孙通吴绥菊潘刚伟徐思峻孙启龙季涛
Owner 南通森友炭纤维有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com