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Blood filter based on polyacrylonitrile based activated carbon fiber

An activated carbon fiber and blood filter technology, applied in the field of medical equipment, can solve the problems of short filtration time, easy to be crushed, insufficient filtration, etc., and achieve the effect of prolonging the filtration time, reducing environmental pollution, and extending the circulation path

Active Publication Date: 2019-09-20
ANHUI JIALIQI AEROSPACE CARBON FIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The blood filters of the prior art have the following deficiencies: (1) the shell is mostly integrally formed, such as a heat-synthesized type, which is sold at the same time as the internal filter device. When in use, if the internal filter device is damaged or the filter fails, you need to (2) The circulation path of blood in the inner cavity of the shell is relatively short, resulting in short filtration time and the potential for insufficient filtration; (3) The material of the shell of the blood transfusion filter in the prior art is mostly resin film, which is affected by Easily crushed by external force

Method used

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  • Blood filter based on polyacrylonitrile based activated carbon fiber
  • Blood filter based on polyacrylonitrile based activated carbon fiber
  • Blood filter based on polyacrylonitrile based activated carbon fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of polyacrylonitrile-based activated carbon fiber comprises the following steps:

[0032] (1) Carry out three-stage heat treatment pre-oxidation in the oxidation furnace for the polyacrylonitrile precursor: the temperature of the first-stage heat treatment is 80-235°C, the treatment time is 30-50min, and the oxygen content of the oxidation furnace is 15-25v%; The temperature of the secondary heat treatment is 235℃~275℃, the treatment time is 20~30min, the oxygen content of the oxidation furnace is 3~7v%; the temperature of the tertiary heat treatment is 275℃~310℃, the treatment time is 15~30min, The oxygen content of the oxidation furnace is 0-1v%;

[0033] (2) Carry out two-stage anaerobic carbonization treatment on the pre-oxidized polyacrylonitrile filament; carbonize at 600-900°C for 30-60 minutes in a nitrogen environment; Activation at 1000°C for 60-200 minutes.

Embodiment 2

[0035] The preparation method of polyacrylonitrile / chitosan-based activated carbon fiber comprises the following steps:

[0036] (1) preparation of spinning solution: chitosan is dissolved in 2wt% acetic acid aqueous solution, and the concentration of chitosan is 1~2wt%; Polyacrylonitrile resin is dissolved in 50% NaSCN aqueous solution, polyacrylonitrile The concentration is 10-12wt%; the chitosan / acetic acid aqueous solution is dropped into the polyacrylonitrile / NaSCN aqueous solution according to the mass ratio of 1:2-5;

[0037] (2) After wet spinning and coagulation, spun silk is obtained;

[0038] (3) Water bath drafting, the temperature of the water bath is 10-30°C, and the drafting ratio is 1-2;

[0039] (4) rinse with deionized water, the water temperature is 40-50°C;

[0040](5) 80 ~ 90 ℃ water bath drafting, the drafting ratio is 2 ~ 3;

[0041] (6) Neutralize by rinsing with ionized water at 80-90°C until neutral;

[0042] (7) Oiling, drying and compacting trea...

Embodiment 3

[0046] Such as figure 1 , 2 , 4, and 7, the present embodiment discloses a blood filter based on the above-mentioned activated carbon fiber, including a split first housing 1, a second housing 2, a filter device, a liquid inlet pipe 3, and a liquid outlet pipe 4 . The first shell 1 and the second shell 2 can be engaged with each other to form a shell. The filtering device is housed in the inner cavity of the casing. The liquid inlet pipe 3 and the liquid outlet pipe 4 are arranged on the shell and communicate with the inner cavity of the shell.

[0047] Specifically, in the present invention, a bayonet 11 is provided on the edge of the opening of the first housing 1 , and a protrusion matching the bayonet 11 is provided on the edge of the opening of the second housing 2 . Of course, the present invention can also use other snap-fit ​​fixing methods in the prior art. The first housing 1 and the second housing 2 of the present invention can be made of plastic materials into...

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Abstract

The invention discloses a preparation method of polyacrylonitrile-based active carbon fibers. The preparation method comprises the following steps: (1) carrying out three-grade heat treatment pre-oxidization on polyacrylonitrile precursors in an oxidization furnace; (2) carrying out two-grade oxygen-free carbonization treatment on the pre-oxidized polyacrylonitrile precursors. The invention further discloses a blood filter based on the polyacrylonitrile-based active carbon fibers. The polyacrylonitrile-based active carbon fibers have the advantages of good adsorption performance, reduction of danger to the environment in a carbonization process, convenience for detaching, capability of increasing circulation paths of blood in a filtering device and capability of prolonging filtering time.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a blood filter based on polyacrylonitrile-based activated carbon fibers. Background technique [0002] The adsorption capacity of activated carbon fiber is realized by increasing the micropores on the surface after activation, and increasing the force between molecules by increasing the specific surface area. The traditional preparation method of polyacrylonitrile-based carbon fiber is as shown in patent application 200510151333.9 A kind of activated carbon fiber and its preparation method, and patent application 201210271045.3 Polyacrylonitrile-based carbon fiber, preparation method and application, patent application 201110244725.1 Preparation method of polyacrylonitrile-based carbon fiber As mentioned above, they are all prepared from single monomer polypropylene. Polyacrylonitrile-based activated carbon fibers have good adsorption properties, but they will release ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/14D01F8/08D01F8/18A61M1/16A61M1/36
Inventor 梁继选梁禹鑫
Owner ANHUI JIALIQI AEROSPACE CARBON FIBER CO LTD