Corrosion inhibitor for improving ablation resistance of metal and preparation method of corrosion inhibitor

Abstract

The invention relates to the technical field of corrosion inhibition materials, and in particular discloses a corrosion inhibitor for improving the ablation resistance of metal and a preparation method of the corrosion inhibitor. The corrosion inhibitor is of a core-shell structure, wherein titanium hydroxide serves as a core material and polyvinyl butyral serves as a wall material. According to the corrosion inhibitor, the surface of inorganic material titanium hydroxide is coated with polyvinyl butyral to form the composite particles with the core-shell structure, the titanium hydroxide generates nano titanium dioxide at a high temperature, the nano titanium dioxide is agglutinated to form a stably attached heat insulation protection layer after meeting the wall of a body tube, micro cracks on the surface of an inner bore can be filled in time, and the ablation resistance and the wear resistance of the inner bore can be improved; and the polyvinyl butyral with good compatibility withthe gunpowder component is used as the wall material, the compatibility problem of the titanium hydroxide and the gunpowder is solved through coating, the polyvinyl butyral can be completely decomposed under the action of high temperature, and the defects of incomplete combustion, excessive residue and the like of the traditional corrosion inhibitor organic components are overcome.

Description

technical field

[0001] The invention relates to the technical field of corrosion-inhibiting materials, in particular to a corrosion-inhibitor for improving metal ablation resistance and a preparation method thereof. Background technique

[0002] During the firing process of the artillery, the barrel ablation problem caused by it is becoming more and more serious. Barrel ablation is mainly caused by the high-temperature, high-pressure inner bore environment causing damage to the surface of the gun bore and expansion of the inner bore size of the barrel when the gun achieves long range, high muzzle velocity, and high rate of fire. The tube cannot meet the ballistic performance requirements of the weapon system until the end of life. Relevant data show that a certain type of 155m plus howitzer is too heavy due to ablation, and its actual service life is even below 1,000 rounds. The ablation problem of the barrel has become a technical obstacle restricting the improvement of t...

Examples

Embodiment 1

[0047]The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.5 μm, the viscosity of the polyvinyl butyral is 40 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.24.

[0048] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0049] Step a, weighing 2.4 g of the polyvinyl butyral and dissolving it in 117.6 g of ethanol, stirring at a speed of 500 rpm for 1.5 h, and then standing for 12 h to obtain the first solution;

[0050] Step b. Weighing 10 g of titanium hydroxide, 12 g of ethanol and 0.12 g of Span 80 and mixing them, stirring and mixing thoroughly, and then ultra...

Embodiment 2

[0053] The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.7 μm, the viscosity of the polyvinyl butyral is 50 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.3.

[0054] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0055] Step a, weighing 1.2 g of the polyvinyl butyral and dissolving it in 118.8 g of absolute ethanol, stirring at a speed of 400 rpm for 2 h, and then standing for 10 h to obtain the first solution;

[0056] Step b. Weigh 4 g of titanium hydroxide, 8 g of absolute ethanol and 0.04 g of Span 80 and mix them, stir and mix thoroughly, and then ultr...

Embodiment 3

[0059] The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.3 μm, the viscosity of the polyvinyl butyral is 25 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.2.

[0060] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0061] Step a, weighing 3.6 g of the polyvinyl butyral and dissolving it in 116.4 g of absolute ethanol, stirring at a speed of 700 rpm for 1.5 h, and then standing for 14 h to obtain the first solution;

[0062] Step b. Weighing 18g of titanium hydroxide, 18g of absolute ethanol and 0.36g of Span 80 and mixing them, stirring and mixing thoroughly,...

technical field

[0001] The invention relates to the technical field of corrosion-inhibiting materials, in particular to a corrosion-inhibitor for improving metal ablation resistance and a preparation method thereof. Background technique

[0002] During the firing process of the artillery, the barrel ablation problem caused by it is becoming more and more serious. Barrel ablation is mainly caused by the high-temperature, high-pressure inner bore environment causing damage to the surface of the gun bore and expansion of the inner bore size of the barrel when the gun achieves long range, high muzzle velocity, and high rate of fire. The tube cannot meet the ballistic performance requirements of the weapon system until the end of life. Relevant data show that a certain type of 155m plus howitzer is too heavy due to ablation, and its actual service life is even below 1,000 rounds. The ablation problem of the barrel has become a technical obstacle restricting the improvement of t...

Examples

Embodiment 1

[0047]The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.5 μm, the viscosity of the polyvinyl butyral is 40 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.24.

[0048] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0049] Step a, weighing 2.4 g of the polyvinyl butyral and dissolving it in 117.6 g of ethanol, stirring at a speed of 500 rpm for 1.5 h, and then standing for 12 h to obtain the first solution;

[0050] Step b. Weighing 10 g of titanium hydroxide, 12 g of ethanol and 0.12 g of Span 80 and mixing them, stirring and mixing thoroughly, and then ultra...

Embodiment 2

[0053] The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.7 μm, the viscosity of the polyvinyl butyral is 50 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.3.

[0054] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0055] Step a, weighing 1.2 g of the polyvinyl butyral and dissolving it in 118.8 g of absolute ethanol, stirring at a speed of 400 rpm for 2 h, and then standing for 10 h to obtain the first solution;

[0056] Step b. Weigh 4 g of titanium hydroxide, 8 g of absolute ethanol and 0.04 g of Span 80 and mix them, stir and mix thoroughly, and then ultr...

Embodiment 3

[0059] The embodiment of the present invention provides a corrosion inhibitor with core-shell structure, which uses titanium hydroxide as the core material and polyvinyl butyral as the wall material. The particle size of the above-mentioned titanium hydroxide is 0.3 μm, the viscosity of the polyvinyl butyral is 25 mPa·s, and the test conditions of the viscosity are: polyvinyl butyral-10 vol% ethanol solution, and the test temperature is 20° C. The mass ratio of the above-mentioned titanium hydroxide to polyvinyl butyral is 1:0.2.

[0060] The preparation method of above-mentioned corrosion inhibitor comprises the following steps:

[0061] Step a, weighing 3.6 g of the polyvinyl butyral and dissolving it in 116.4 g of absolute ethanol, stirring at a speed of 700 rpm for 1.5 h, and then standing for 14 h to obtain the first solution;

[0062] Step b. Weighing 18g of titanium hydroxide, 18g of absolute ethanol and 0.36g of Span 80 and mixing them, stirring and mixing thoroughly,...

Images