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A kind of carbon sphere/polyacrylonitrile fiber material and its preparation method and application

A technology of polyacrylonitrile fiber and polyacrylonitrile, which is applied in the field of carbon sphere/polyacrylonitrile fiber material and its preparation and application, which can solve the problems of poor structural effect, limited number of nodes, difficult formation, etc., and achieve good oil-water separation effect , significant structural effects and good application prospects

Active Publication Date: 2020-08-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Tests have shown that compared with conventional polyacrylonitrile fiber membranes, although the separation effect of this material has been improved to a certain extent, on the one hand, the spindle-shaped nodes of graphene oxide are not easy to form, resulting in a limited number of nodes; on the other hand, graphene oxide Difficulty forming prominent spindle nodes, therefore, poor structural effects

Method used

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  • A kind of carbon sphere/polyacrylonitrile fiber material and its preparation method and application
  • A kind of carbon sphere/polyacrylonitrile fiber material and its preparation method and application
  • A kind of carbon sphere/polyacrylonitrile fiber material and its preparation method and application

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preparation example Construction

[0044] On the other hand, in some embodiments of this specification, a kind of preparation method of above-mentioned carbon sphere / polyacrylonitrile fiber material is provided, and this method comprises the following steps:

[0045] Prepare the spinning stock solution, polyacrylonitrile is dissolved in the spinning stock solution, and carbon spheres with a particle diameter of 50nm-5 μm are dispersed; the mass ratio of carbon spheres and polyacrylonitrile in the spinning stock solution is (0.1-5): 10;

[0046] The carbon sphere / polyacrylonitrile fiber material is prepared by using the spinning stock solution as a raw material through an electrostatic spinning method.

[0047] In this embodiment, when the particle size of carbon spheres is determined and the mass ratio of carbon spheres to polyacrylonitrile in the spinning dope is constant, a typical "spindle structure" (beaded structure) can be formed.

[0048] In this embodiment, the basic conditions and methods for preparin...

experiment example 1

[0066] In this experimental example, a carbon sphere / polyacrylonitrile porous fiber membrane was specifically prepared, and the preparation process was as follows:

[0067] (1) Preparation of monodisperse nano-carbon spheres: the molar ratio of ammonia, resorcinol, formaldehyde, ethanol, and water is (1-3): (1.4-2.8): (2.8-5.6): (0- 1186): (2311-0). First add absolute ethanol and ammonia water to deionized water and react in a water bath at 30°C for 1 hour; then add resorcinol and react in a water bath at 30°C for 0.5 hours; then add formaldehyde and react in a water bath at 30°C for 12 hours; After that, it was transferred to the reaction kettle, and hydrothermally reacted at 100°C for 24 hours; then it was centrifuged and purified with absolute ethanol and deionized water, and then dried at 80°C for 12 hours; then put into a tube furnace, under nitrogen environment The temperature is raised to 350°C for 2 hours, and then the temperature is raised to 600°C for 4 hours to obt...

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Abstract

A carbon sphere / polyacrylonitrile fiber material and a preparing method and applications thereof are provided. The material includes one or more polyacrylonitrile threads covered with carbon spheres the particle size of which is 50 nm to 5 [mu]m. The polyacrylonitrile threads have a fusiform structure adopting the carbon spheres as nodes. The preparing method is simple, and the material is low incost, safe and environmentally friendly, and has huge application value in the field of oil-water emulsion separation.

Description

technical field [0001] This specification relates to a carbon sphere / polyacrylonitrile fiber material and its preparation method and application. Background technique [0002] Inspired by the unique properties of spider silk, which is known worldwide for its ability to harvest moisture from humid air, the researchers designed a particularly wettable material. Wetted spider silk is composed of periodic spindle nodes and connecting parts, and the nodes and connecting parts exhibit different surface microstructures. This unique structure makes the nodes and connecting parts produce obvious surface energy gradients. difference and the Laplace pressure difference. The two cooperate with each other, so that the water droplets can be continuously directed to the nodes. [0003] Inspired by the above, the researchers have developed artificial new materials with similar structures. For example, Wang Liqiu et al. used a composite material strategy to fabricate microfibers with a ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/54D01F1/10B01D17/022
CPCB01D17/0202D01F1/10D01F6/54
Inventor 薛庆忠李晖何大亮张建强尹莹莹
Owner BC P INC CHINA NAT PETROLEUM CORP
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