Efficient compound corrosion inhibitor as well as preparation method and application thereof
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A corrosion inhibitor and high-efficiency technology, which is applied in the field of high-efficiency compound corrosion inhibitor and its preparation, can solve the problems of environmental pollution and carcinogenicity, and achieve the effect of high corrosion inhibition efficiency, quick effect and simple operation
Active Publication Date: 2017-07-25
SOUTHWEST FORESTRY UNIVERSITY
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[0003] Chromates are traditionally excellent corrosion inhibitors for aluminum, but because these chromates
Method used
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[0021] The preparation method of high-efficiency composite corrosion inhibitor of the present invention comprises the following steps:
[0022] A. Raw material preparation: Prepare anionic surfactants, polymer compounds, oxime compounds, aromatic aldehyde compounds, and pickling liquid for use;
[0023] B. Preparation: Add anionic surfactants, polymer compounds, oxime compounds, and aromatic aldehyde compounds into the pickling solution according to the ratio of raw materials and stir to obtain the target product.
[0024] Adding to the pickling solution described in step B is to first add the anionic surfactant, polymer compound, oxime compound, and aromatic aldehyde compound into an appropriate amount of water to dissolve and stir evenly, and then add the acid in the pickling solution again Stir until the remaining volume of water is added and stir to combine.
[0025] The application of the high-efficiency compound corrosion inhibitor in the present invention is the applic...
Embodiment 1
[0029] A high-efficiency compound corrosion inhibitor, including sodium lauryl sulfate 0.1g / L, polyvinyl alcohol 0.05g / L, dimethylglyoxime 0.05g / L, protocatechualdehyde 0.01 g / L, and the balance is Pickling solution.
Embodiment 2
[0031] A high-efficiency compound corrosion inhibitor, including sodium lauryl sulfate 1.0 g / L, polyvinyl alcohol 0.5 g / L, dimethylglyoxime 0.1 g / L, protocatechualdehyde 0.05 g / L, and the balance is Pickling solution.
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Abstract
The invention discloses an efficient compound corrosion inhibitor as well as a preparation method and application thereof. The efficient compound corrosion inhibitor comprises the following components: 0.1-1.0g/L of lauryl sodium sulfate, 0.05-0.5g/L of polyvinyl alcohol, 0.05-0.1g/L of dimethylglyoxime, 0.01-0.05g/L of protocatechualdehyde and the balance of pickling solution. The efficient compound corrosion inhibitor has the advantages of being high in corrosion inhibition efficiency, remarkable in mutual synergistic effect, high in adaptability, excellent in after effectiveness and high-temperature resistant, obviously restrains the corrosive action of hydrochloric acid to aluminum, is suitable for cleaning aluminum in hydrochloric acid, can be used for cleaning petrochemical equipment, a boiler, an aluminium product, a pipeline and other equipment, and is convenient and safe to use, and simple to operate, and takes effect quickly.
Description
technical field [0001] The invention belongs to the technical field of metal corrosion inhibitors, and in particular relates to a high-efficiency composite corrosion inhibitor and its preparation method and application. Background technique [0002] Metal materials occupy a very important position in modern industry and agriculture, machinery, transportation, national defense and science and technology. Metal aluminum has the advantages of beautiful appearance, light weight, good thermal conductivity and electrical conductivity, and is widely used in various sectors of the national economy. Aluminum will form a layer of oxide film during use. This layer of oxide film is relatively fragile and loose, which will make the aluminum lose its luster. If it is directly painted on the aluminum material, the adhesion of the coating film will not be strong. Aluminum is subjected to surface pretreatment to remove the oxide film, among which pickling of aluminum is a more commonly used...
Claims
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