Activated carbon fiber paper and preparation method thereof

A technology of activated carbon fiber and precipitated fiber, which is applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material treatment, papermaking, etc. Insufficient strength and other problems, to achieve the effect of good paper-forming property, excellent adsorption performance and high strength

Active Publication Date: 2014-12-24
南通大学技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, when the amount of activated carbon powder is large, there is usually the problem that the strength of the filter paper is not enough and it is easy to lose powder. However, reducing the amount of activated carbon powder and increasing the amount of fiber pulp will lead to a decrease in the adsorption and filtration efficiency of the filter paper and cannot meet the use requirements. difficult to balance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of meta-aramid fibrids: using isophthaloyl dichloride (IPC) and meta-phenylenediamine (MPD) as polymerization monomers, synthesize meta-aramid solution in dimethylacetamide (DMAc) system. The synthesized meta-aramid fiber solution is used to prepare the meta-aramid filtrate fiber. Among them, the concentration of meta-aramid fiber solution is 3%, and the coagulation bath H 2 The O / DMAc mixing weight ratio was 70:30, and the rotor speed was 2000 r / min.

[0023] Fiber paper preparation: The weighed meta-aramid fibrids were thawed with a beater at a beating concentration of 3% for 25 min to obtain a fibrous slurry with a beating degree of 55°SR. The chopped viscose-based activated carbon fibers with a weighed length of 3 mm were disintegrated with a beater at a beating concentration of 2% for 15 min to obtain an activated carbon fiber slurry with a beating degree of 15°SR. According to the ratio of the meta-aramid fibrid fiber accounting for 30% (based on the...

Embodiment 2

[0025] Preparation of meta-aramid fibrids: using isophthaloyl dichloride (IPC) and meta-phenylenediamine (MPD) as polymerization monomers, synthesize meta-aramid solution in dimethylacetamide (DMAc) system. The synthesized meta-aramid fiber solution is used to prepare the meta-aramid filtrate fiber. Among them, the concentration of the meta-aramid fiber solution is 5%, and the coagulation bath H 2 The O / DMAc mixing weight ratio was 60:40, and the rotor speed was 2500 r / min.

[0026] Preparation of fiber paper: The weighed meta-aramid fibrids were thawed with a beater at a beating concentration of 1% for 10 min to obtain a fibrous slurry with a beating degree of 40°SR. The chopped viscose-based activated carbon fibers with a weighed length of 1 mm were disintegrated with a beater at a beating concentration of 5% for 20 min to obtain an activated carbon fiber slurry with a beating degree of 20°SR. According to the proportion of meta-aramid fibrids accounting for 10% (based on ...

Embodiment 3

[0028] Preparation of para-aramid fibrids: Using terephthaloyl chloride (IPC) and p-phenylenediamine (MPD) as polymerization monomers, a para-aramid solution was synthesized in dimethylacetamide (DMAc) system. The synthesized para-aramid solution is used to prepare the para-aramid precipitated fiber. Among them, the concentration of para-aramid fiber solution is 7%, and the coagulation bath H 2 The O / DMAc mixing weight ratio was 70:30, and the rotor speed was 3000 r / min.

[0029] Preparation of fiber paper: The weighed para-aramid fibrids were thawed with a beater at a beating concentration of 5% for 30 min to obtain a fibrous slurry with a beating degree of 70 °SR. The chopped viscose-based activated carbon fibers with a weighed length of 8 mm were disintegrated with a beater at a beating concentration of 1% for 10 min to obtain an activated carbon fiber slurry with a beating degree of 10 °SR. According to the ratio of the para-aramid fibrid fiber accounting for 50% (based ...

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Abstract

The invention discloses activated carbon fiber paper and a preparation method thereof. The activated carbon fiber paper adopts aramid fibrids as carriers, and the carriers are loaded with activated carbon fibers, wherein the lengths of the activated carbon fibers are within 1-8mm, and the aramid fibrids account for 10-50% of the activated carbon fiber paper in oven-dry mass. Compared with traditional activated carbon fiber paper, the prepared activated carbon fiber paper has the high adsorptive property and high strength.

Description

technical field [0001] The invention relates to a filter paper, in particular to a filter paper using activated carbon fiber as a filter material. Background technique [0002] Activated carbon (Activated Carbon, AC) is a porous functional material with developed pore structure. Activated carbon filter paper prepared by utilizing the characteristics of activated carbon is a functional filter material, which can be used for air and water purification and military chemical protection, etc. field, with broad market prospects. At present, most of the common activated carbon filter papers on the market use plant fiber pulp as the carrier, and the activated carbon powder is added to the pulp and made by paper machine. The filtering mechanism is that the activated carbon particles in the paper have a porous structure and a very large specific surface area. It has a strong adsorption capacity for certain components in the gas, and can selectively adsorb and separate toxic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/12D21H13/50D21H13/26
Inventor 刘其霞季涛高强倪朝辉姚理荣王飞艳余进
Owner 南通大学技术转移中心有限公司
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