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Preparation method of carbon-coated ferrous oxide and carbon-coated ferrous oxide

A technology of ferrous oxide and carbon coating, applied in the direction of iron oxide/hydroxide, etc., can solve the problems of fast release speed, short anti-fouling life, unstable existence of ferrous oxide, etc., achieve low cost, prevent oxidation, The tight effect

Inactive Publication Date: 2015-04-08
SHENZHEN EIGEN EQUATION GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing carbon-coated ferrous oxide and carbon-coated ferrous oxide, aiming to solve the problem that the existing ferrous oxide cannot exist stably at room temperature, has a fast release speed, and has a short antifouling life. question

Method used

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  • Preparation method of carbon-coated ferrous oxide and carbon-coated ferrous oxide
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  • Preparation method of carbon-coated ferrous oxide and carbon-coated ferrous oxide

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Embodiment 1

[0053] Stir 2g of LPAN solution (molecular weight 4000) at 120°C for 120h to form a microcyclized LPAN solution, heat-treat the microcyclized LPAN solution at 250°C for 8h to form a thermally oxidized polyacrylonitrile oligomer with a ladder structure (OPAN) solid, add 6g of iron oxide, 15ml of solvent, and ball mill the sample with a planetary ball mill, the ball to material ratio is 15:1, 400rad / min ball mill for 10h, after discharging, dry in an oven at 220°C for 3h to obtain the thermal oxidation precursor ( That is, low-temperature carbonization precursor coated iron compound). Put the thermal oxidation precursor in a porcelain boat, under the protection of an inert atmosphere, the gas flow rate is 150ml / min, calcined at 600°C for 4h, cooled to room temperature, carbon-coated ferrous oxide mixture, the product structure is as follows Figure 1 to Figure 2 shown.

Embodiment 2

[0055] Stir 2g of LPAN solution (molecular weight 10,000) at 200°C for 100h to form a microcyclized LPAN solution, heat-treat the microcyclized LPAN solution at 200°C for 10h to form a thermally oxidized polyacrylonitrile oligomer with a ladder structure (OPAN) solid, add 15g iron oxide, 20ml solvent, and ball mill the sample with a planetary ball mill, the ball to material ratio is 15:1, 400rad / min ball mill for 8h, after discharging, dry in 200℃ oven for 10h to obtain the thermal oxidation precursor ( That is, low-temperature carbonization precursor coated iron compound). Put the thermal oxidation precursor in a porcelain boat, under the protection of an inert atmosphere, with a gas flow rate of 10ml / min, calcinate at 1100°C for 10h, cool to room temperature, and carbon-coat the ferrous oxide mixture.

Embodiment 3

[0057] Stir 2g of LPAN solution (molecular weight 1600) at 100°C for 200h to form a microcyclized LPAN solution, heat-treat the microcyclized LPAN solution at 300°C for 1h to form a thermally oxidized polyacrylonitrile oligomer with a ladder structure (OPAN) solid, add 3g iron oxide, 30ml solvent, and ball mill the sample with a planetary ball mill, the ball to material ratio is 15:1, 400rad / min ball mill for 12h, after discharging, dry in an oven at 250°C for 1h to obtain the thermal oxidation precursor ( That is, low-temperature carbonization precursor coated iron compound). Put the thermal oxidation precursor in a porcelain boat, under the protection of an inert atmosphere, with a gas flow rate of 500ml / min, calcinate at 1100°C for 1h, cool to room temperature, and carbon-coat the ferrous oxide mixture.

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Abstract

The invention discloses a preparation method of carbon-coated ferrous oxide and carbon-coated ferrous oxide. By coating a layer of carbon on a ferrous oxide material prepared by the method, the matching performance with a carbon source is enhanced, and the release rate of the ferrous oxide is also effectively controlled since a carbon film is porous, therefore, the carbon-coated ferrous oxide is applicable to the antifouling additive of an ocean antifouling paint; in addition, the carbon coating not only can be used for preventing the ferrous oxide from being oxidized, but also can be used for effectively releasing the ferrous oxide to the surface by virtue of the porous carbon film so as to increase the contact area between an adsorbate and a catalyst, therefore, the antifouling performance is enhanced. The carbon-coated ferrous oxide prepared by the method disclosed by the invention has the advantages of being simple in process, low in cost, high in purity, high in yield, uniform in grain size distribution, good in morphology and the like; since liquid acrylonitrile oligomer contains a great amount of functional groups and serves as a liquid precursor, the oligomer can be uniformly mixed and firmly combined with a dopant by virtue of modifying, doping and coating.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a preparation method of carbon-coated ferrous oxide and carbon-coated ferrous oxide. Background technique [0002] Ferrous oxide belongs to the cubic crystal system (similar to the crystal structure of sodium chloride), and each iron atom is connected with 6 oxygen atoms to form an octahedral coordination, and each oxygen atom is also connected with 6 iron atoms in the same situation. atom. [0003] The phenomenon that microorganisms, plants and animals in the ocean attach to and adversely affect ships is called fouling. Fouling not only increases the ship's self-weight and reduces the ship's load capacity, but also greatly increases the resistance of the ship's hull, resulting in a decrease in ship speed and an increase in fuel consumption. So far, the marine antifouling technologies used by humans mainly include: antifouling coatings, electrolysis of seawater to generate hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/02C01B31/02
Inventor 刘剑洪张黔玲何传新曹梦梦
Owner SHENZHEN EIGEN EQUATION GRAPHENE TECH CO LTD
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