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Modifying method of active carbon fiber

A technology of activated carbon fiber modification, applied in the direction of carbon fiber, fiber treatment, fiber chemical characteristics, etc., can solve the problems of high cost, long reaction time, complex carbon fiber process, etc., achieve low cost, increase interaction, shorten reaction the effect of time

Inactive Publication Date: 2010-06-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a modification method of activated carbon fiber in order to solve the problems of complex process, long reaction time and high cost in the modification of carbon fiber in the prior art

Method used

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Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0007] Specific embodiment one: the modification method of activated carbon fiber in this embodiment is realized according to the following steps: one, 1g of activated carbon fiber is added in the nitric acid of 100~250ml, add glass beads, then heat to boiling with the microwave power of 550~650W, Then continue to react with microwave power of 50-200W for 4-7min, take it out and cool it to room temperature, remove the upper layer of nitric acid solution after precipitation, and obtain the precipitate; drying at ~110°C to obtain modified activated carbon fibers; wherein the concentration of nitric acid in step 1 is 0.05-0.3mol / L.

specific Embodiment approach 2

[0008] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, heat to boiling with a microwave power of 600W, and then continue to react for 5 minutes with a microwave power of 100W. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0009] Embodiment 3: This embodiment is different from Embodiment 1 in that in step 1, the precipitate is washed with distilled water until the pH of the dripping filtrate is 7, and then dried at 100°C. Other steps and parameters are the same as those in Embodiment 1.

[0010] In this embodiment, the sediment is cleaned with distilled water, and the sediment is filtered by a circulating water pump.

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Abstract

The invention pertains to a modified method of activated carbon fiber, which relates to a modified method of carbon fiber. The invention resolves the problems of complex process, long reaction time and high cost caused from modification for carbon fiber by current technique. The modified method includes the following steps of: 1, adding the activated carbon fiber into the nitric acid, heating withmicrowave, removing the upper nitric acid after cooling and depositing to obtain the deposit; 2, cleaning and drying the deposit to obtain the modified activated carbon fiber. The invention shortensthe reaction time and is characterized by simple process and low cost.

Description

technical field [0001] The invention relates to a modification method of carbon fiber. Background technique [0002] Activated carbon fiber has a large specific surface area, rich micropores, small pore size and narrow distribution, large adsorption capacity, fast adsorption speed, and 1 to 10 times higher adsorption capacity than ordinary activated carbon; it is also easy to regenerate and has great process flexibility. Carbon fiber is a non-polar adsorbent. Because of its hydrophobicity, it can adsorb various non-polar organic substances in aqueous solution; however, it is difficult to adsorb solutes with certain polarity in aqueous solution, and carbon fiber must be treated. Modification to make the surface have a certain polarity; through the surface modification of carbon fiber, its surface functional groups can be increased, and functional groups such as hydroxyl and carboxyl introduced during the oxidation process can enhance the interaction between carbon fiber and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F11/12D01F9/12D06M10/06B01J32/00B01J35/06D06M101/40
Inventor 王鹏焦春艳史书杰
Owner HARBIN INST OF TECH
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