Preparation method of super-hydrophobic anticorrosive self-assembled three-dimensional nano material

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: 2019-07-05
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 super-hydrophobic anticorrosive self-assembled three-dimensional nano material
  • Preparation method of super-hydrophobic anticorrosive self-assembled three-dimensional nano material
  • Preparation method of super-hydrophobic anticorrosive self-assembled three-dimensional nano material

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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 anticorrosive self-assembled three-dimensional nano material. The method comprises the following steps: firstly, preparing dahlia-like carbon nanohorns by adopting an electric arc discharge method, and performing transient oxidation treatment on the carbon nanohorns to obtain an open-cell carbon nanohorn material; and fully mixingnano zinc ethanol slurry and the carbon nanohorn material, and performing self-assembly compounding on the carbon nanohorns and nano zinc by adopting a supercritical fluid method to form the three-dimensional pearl mussel-like structural material. According to the preparation method provided by the invention, the carbon nanohorn-nano zinc composite material prepared by adopting the method has a simple process, synergy of a super-hydrophobic structure of the carbon nanohorns and corrosion resistance of the nano zinc in the coating system can physically block a reaction of a metal surface withan active medium, and effectively protect elemental zinc against corrosion by a liquid and oxidation by the air, thereby greatly improving a zinc utilization rate and corrosion resistant efficiency; and the composite material can be widely used in the fields of architectural coatings and industrial anticorrosive coatings to improve compactness, barrier properties, mechanical properties and corrosion resistance of films.

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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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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