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A kind of preparation method of sulfate-reducing bacteria corrosion inhibition film

A technology of corrosion inhibition and sulfate, applied in the field of surface treatment and anti-corrosion, to achieve the effect of simple production process, protection of metal appearance, anti-corrosion and environmental friendliness

Inactive Publication Date: 2018-01-23
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN201010531302.3 titled "A surface material with anti-protein adsorption properties and its preparation method" discloses that monomer molecules with diionic properties are grafted and polymerized on the surface of a silicone substrate to form a surface material with anti-protein adsorption properties. The surface material with protein adsorption properties protects underwater materials, but the purpose of its invention is only to inhibit marine organisms from adsorbing the hull, and its base material is only silicone, etc.

Method used

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  • A kind of preparation method of sulfate-reducing bacteria corrosion inhibition film
  • A kind of preparation method of sulfate-reducing bacteria corrosion inhibition film

Examples

Experimental program
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Embodiment 1

[0015] In this example, a composite inhibitory film is prepared on the surface of B10 copper-nickel alloy. First, the B10 copper-nickel alloy plate is processed into a sheet-like sample with a size of 10mm×10mm×3mm. Grind, ultrasonically clean in acetone for 5 minutes, rinse with ethanol, and place in a desiccator for later use; then place the rinsed copper alloy test piece and 1mL BUTS in a sealed polytetrafluoroethylene box filled with nitrogen, and then put Put the box in an oven at 130°C for 2 hours at a constant temperature, take out the box, take out the test piece after natural cooling, and clean it with acetone, ethanol and deionized water in order to remove the unreacted BUTS molecules on the surface of the sample. Dry the test piece and place it in a desiccator for later use; add 10mL deionized water, 20mL methanol, (4.19g, 15mmol) SBMA and the B10 copper-nickel alloy test piece grafted with BUTS to the three-necked flask, and simultaneously pass Nitrogen, add (468mg...

Embodiment 2

[0017] This embodiment tests the sulfate-reducing bacteria corrosion performance of B10 copper-nickel alloy after the inhibitory film layer is constructed in Example 1. The B10 copper-nickel alloy electrodes before and after the film layer are selected to be immersed in the SRB medium solution respectively, and electrochemical Impedance experiment, the experimental parameters are as follows: the electrochemical workstation adopts Autolab Hires / PGSTAT 370N FRABA, and the software NOVA1.9 is used to collect data. The system frequency range is 100kHz-0.01Hz, and the peak value of the AC signal is 5mV. The results are attached figure 2 As shown, the final calculation shows that the corrosion inhibition efficiency reaches 92.6%.

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Abstract

The invention belongs to the technical field of surface treatment and corrosion prevention and relates to a preparation method for a sulfate reducing bacterium corrosion inhibiting film. A ground copper alloy test block and 1 mL of brominated methoxyl silane are put in a polytetrafluoroethylene box filled with nitrogen, then the box is put in an oven at the temperature of 130 DEG C for constant-temperature heating for 2 hours, the ground copper alloy test block is taken out and ultrasonically washed with acetone, ethyl alcohol and deionized water in sequence, deionized water, methyl alcohol, 3-(2-methylacryloyl oxo-ethyl dimethylamino) propanesulfonic acid salt and the ground copper alloy test block grafted with brominated methoxyl silane are sequentially added to a three-opening flask, nitrogen is introduced, duplex pyridine and pure cuprous bromide are added, and after 24 hours, the reddish brown sulfate reducing bacterium corrosion inhibiting film is formed on the surface of the ground copper alloy test block. The formula is scientific and reasonable, the preparation process is simple, the appearance of metal is protected, the corrosion prevention environment is friendly, and the good effect of inhibiting sulfate reducing bacterium corrosion is achieved.

Description

Technical field: [0001] The invention belongs to the technical field of surface treatment and anti-corrosion, and relates to a composite film for inhibiting sulfate-reducing bacteria from corroding metal, in particular to a composite film made of bromomethoxysilane (BUTS) and 3-(2-methacryloyloxy) The preparation method of the sulfate-reducing bacteria corrosion inhibition film constructed on the metal surface based on ethyl dimethylamino) propanesulfonate (betaine, SBMA) molecule. Background technique: [0002] The interaction of metals with the surrounding environmental media can cause them to corrode. Corrosion will not only cause huge economic losses, but also bring many catastrophic accidents. Microbial corrosion, due to its concealment, is easy to form local corrosion such as pitting corrosion. Once it occurs, it will accelerate, it is difficult to control, and it is more destructive. Sulfate-Reducing Bacteria (SRB) is an anaerobic microorganism that widely exists in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/38
CPCC08F292/00C08F220/382
Inventor 许凤玲蔺存国杨家东
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP