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Preparation method of a superhydrophobic anti-corrosion self-assembled three-dimensional nanomaterial

A three-dimensional nano, self-assembly technology, applied in the direction of anti-corrosion coatings, bulk chemical production, coatings, etc., can solve problems affecting reduction performance and achieve excellent reduction activity, improve permeability resistance, and increase fluidity.

Active Publication Date: 2020-04-17
上海利物盛纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Nano-zinc has excellent chemical activity and good anti-ultraviolet performance, which is conducive to the production of high-quality anti-corrosion coatings; however, nano-zinc alone is prone to surface oxidation, which affects its reduction performance

Method used

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  • Preparation method of a superhydrophobic anti-corrosion self-assembled three-dimensional nanomaterial
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  • Preparation method of a superhydrophobic anti-corrosion self-assembled three-dimensional nanomaterial

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Embodiment 1

[0020] The arc discharge method uses a graphite rod as the anode, the deposition atmosphere is 50kPa argon, and the DC arc discharge current is 120A; figure 1 As shown, the prepared "Dahlia-shaped" carbon nanohorn particle size is 80nm. The carbon nanohorns prepared above were subjected to instantaneous oxidation treatment, the oxidation atmosphere was 80kPa oxygen, the oxidation temperature was 800°C, and the oxidation time was 5min; figure 2 As shown, the prepared open-pore carbon nanohorn particle size is 70nm. Prepare carbon nanohorn-nano zinc mixed ethanol slurry, wherein the solid content of carbon nanohorn is 1%, the solid content of nano zinc is 0.5%, and the particle size of nano zinc is 50nm. The above mixed ethanol slurry is subjected to supercritical fluid treatment at a temperature of 300 °C, a pressure of 8 MPa, and a treatment time of 1 h; image 3 As shown, the particle size of the prepared carbon nanohorn-nano-zinc composite material is 80nm.

Embodiment 2

[0022] The arc discharge method uses a graphite rod as the anode, the deposition atmosphere is 70kPa argon, and the DC arc discharge current is 200A; the obtained "Dahlia-shaped" carbon nanohorns have a particle size of 100nm. The carbon nanohorns prepared above were subjected to instantaneous oxidation treatment, the oxidation atmosphere was 100 kPa oxygen, the oxidation temperature was 900° C., and the oxidation time was 5 minutes; the particle size of the prepared open-pore carbon nanohorns was 80 nm. Prepare carbon nanohorn-nano zinc mixed ethanol slurry, wherein the solid content of carbon nanohorn is 3%, the solid content of nano zinc is 2%, and the particle size of nano zinc is 50nm. The mixed ethanol slurry was subjected to supercritical fluid treatment at a temperature of 350° C., a pressure of 35 MPa, and a treatment time of 5 hours; the particle size of the prepared carbon nanohorn-nano-zinc composite material was 100 nm.

Embodiment 3

[0024] The arc discharge method uses a graphite rod as the anode, the deposition atmosphere is 70kPa nitrogen, and the DC arc discharge current is 200A; the obtained "Dahlia-shaped" carbon nanohorns have a particle size of 100nm. The carbon nanohorns prepared above were subjected to instantaneous oxidation treatment, the oxidation atmosphere was 100 kPa oxygen, the oxidation temperature was 850° C., and the oxidation time was 5 minutes; the particle size of the prepared open-pore carbon nanohorns was 80 nm. Prepare carbon nanohorn-nano zinc mixed ethanol slurry, wherein the solid content of carbon nanohorn is 3%, the solid content of nano zinc is 1%, and the particle size of nano zinc is 50nm. The above mixed ethanol slurry was subjected to supercritical fluid treatment at a temperature of 270° C., a pressure of 12 MPa, and a treatment time of 2.5 hours; the particle size of the prepared carbon nanohorn-nano-zinc composite material was 100 nm.

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Abstract

The invention discloses a preparation method of a super-hydrophobic anti-corrosion self-assembled three-dimensional nano-horn material. Firstly, an arc discharge method is used to prepare a dahlia-shaped carbon nano-horn, and then it is subjected to instantaneous oxidation treatment to obtain an open-pore carbon nano-horn material. Then, after fully mixing the nano-zinc ethanol slurry with the carbon nano-horn material, the supercritical fluid method is used to self-assemble the carbon nano-horn and nano-zinc into a three-dimensional pearl clam-like structure material; the carbon nano-horn- The nano-zinc composite material has a simple process. The super-hydrophobic structure of carbon nanohorns and the anti-corrosion performance of nano-zinc in the coating system can not only physically block the metal surface from reacting with active media, but also effectively protect elemental zinc from liquid corrosion and air oxidation. , can greatly improve zinc utilization rate and anti-corrosion efficiency, and can be widely used in the fields of architectural coatings and industrial anti-corrosion coatings to improve the compactness, barrier properties, mechanical properties and anti-corrosion properties of the film layer.

Description

technical field [0001] The invention relates to a preparation method of a superhydrophobic anti-corrosion self-assembled three-dimensional nanomaterial, belonging to the technical field of preparation and application of nanocomposite materials. Background technique [0002] Nano-zinc has excellent chemical activity and good anti-ultraviolet performance, which is beneficial to the production of high-quality anti-corrosion coatings; however, nano-zinc alone is prone to surface oxidation, which affects its reduction performance. Carbon nanohorn is a new type of nano-carbon material. The shape of a single carbon nanohorn is a short-sized single-walled carbon nanotube with a closed tapered end at one end, and due to the van der Waals force between the tubes, many carbon nanohorns are aggregated. Together, they form a first-order spherical assembly, and the "dahlia" shape is one of the aggregates. Due to the characteristics of high specific surface area, hydrophobic structure, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/10
CPCC09D5/106Y02P20/54
Inventor 张燕萍杨信刚赵志国吴万桃
Owner 上海利物盛纳米科技有限公司
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