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Inhibitor-supported carrier and preparation method and application thereof

A technology of a corrosion inhibitor and a carrier is applied in the field of a carrier carrying a corrosion inhibitor and its preparation, and achieves the effects of simple operation and low cost

Inactive Publication Date: 2010-12-15
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in an acidic solution with a pH of less than 6, the amino group on the six-membered ring of chitosan undergoes a protonation reaction, making chitosan positively charged; it has good film-forming properties and is easy to form a gel; Solubilizing drugs have a good solubilizing effect; in addition, chitosan itself also has good antibacterial and antibacterial properties. Chinese patent CN1664225 utilizes this property of chitosan to prepare a chitosan antibacterial finishing agent, but the shell The use of polysaccharide hydrogel as a carrier material for corrosion inhibitors has not been reported so far

Method used

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  • Inhibitor-supported carrier and preparation method and application thereof
  • Inhibitor-supported carrier and preparation method and application thereof
  • Inhibitor-supported carrier and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Raw materials: Chitosan CS (molecular weight = 2100 kDa, degree of deacetylation = 90.6%) was purchased from Huantai Jinhu Shell Products Co., Ltd. (Qingdao). 11-carboxythiol was purchased from Sigma-Aldrich and used directly without any treatment. 2-Mercaptobenzothiazole and other reagents were of analytical grade and purchased from Sinopharm Chemical Reagent Co., Ltd. All aqueous solutions were prepared using ultrapure water (Millipore).

[0020] 1) Preparation of metallic copper electrodes for experiments

[0021] Copper electrodes for electrochemical experiments are prepared from copper rods (diameter 8mm). Cut pure copper rods into cylinders with a height of 1 cm, seal the surroundings with epoxy resin, connect copper wires on one side, and expose the other side to the outside. Before the experiment, Use 1200# and 2000# sandpaper to polish into a mirror surface, soak in 85% phosphoric acid for 5 minutes, N 2 blow dry.

[0022] 2) Copper electrode surface treatm...

Embodiment 2

[0033] Differences from Example 1:

[0034] 1) Preparation of metallic copper electrodes for experiments: the copper samples used in the test are multiple copper sheet samples of 20×30×5 mm.

[0035] 2) Metal copper electrodes are corroded by sulfate-reducing bacteria:

[0036] (1) Bacterial culture

[0037] The sulfate-reducing bacteria used in this study were obtained from the bottom mud of the Bohai Sea. The seawater used for culturing bacteria was taken from Huiquan Bay, Qingdao.

[0038] Bohai seabed mud collected in glass bottles sterilized by high temperature steam was added to culture medium of sulfate-reducing bacteria. Considering that SRB is anaerobic bacteria, nitrogen gas was passed for 1 h before cultivation, and then sealed with paraffin. The glass bottles were placed in an electric thermostat incubator for cultivation at 30°C. Replace new medium every 10 days to ensure the supply of growth nutrients for SRB.

[0039] The medium composition is as follows: ...

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Abstract

The invention belongs to corrosion prevention technology of metal materials, in particular to an inhibitor-supported carrier and a preparation method and application thereof. The inhibitor-supported carrier comprises the following components in percentage by weight: 5 to 20 percent of acetic acid, 70 to 85 percent of water, 1 to 5 percent of carrier and the balance of supported inhibitor. The preparation method comprises the following steps of: dissolving 1 to 5 percent of chitosan solid in acid aqueous solution in percentage by weight, and uniformly stirring the solution with brute force so as to obtain a chitosan hydrosol carrier, wherein the acid aqueous solution is aqueous solution of acetic acid which comprises 5 to 20 percent of acetic acid and 70 to 85 percent of water. The inhibitor-supported chitosan hydrosol carrier supports the inhibitor and is directly coated on a corrosion-resistant metal device, or is used as an additive and added into an organic corrosion-resistant material inhibitor serving as a substrate, and then the organic corrosion-resistant material inhibitor is coated on the corrosion-resistant metal device. The inhibitor-supported carrier can be widely applied to corrosion prevention of metal materials. Because the chitosan is a natural material and has wide source, no toxins or pollution, the chitosan can prevent the metallic corrosion caused by microbes to a certain degree.

Description

technical field [0001] The invention belongs to the corrosion protection technology of metal materials, and specifically relates to a carrier carrying a corrosion inhibitor, a preparation method and application thereof. Background technique [0002] Metal corrosion is an important factor in the destruction of human life and modern industry, especially in marine and chemical industries. Corrosion not only causes waste of materials, but also forced to stop production due to equipment maintenance, and more seriously, oil and gas leakage caused by corrosion catastrophic accident. At present, there are many ways to prevent corrosion, such as surface coating, surface treatment, electrochemical protection, and adding corrosion inhibitors. Adding corrosion inhibitor is a method with simple process, low cost and strong practicability. However, most of the corrosion inhibitors are organic heterocyclic molecules containing atoms such as N, S, and P. Among them, a considerable amount ...

Claims

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Application Information

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IPC IPC(8): C23F11/10C08L5/08C09D7/12C09D5/08
Inventor 鲍祺张盾
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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