Multifunctional microcapsule corrosion inhibitor and preparation method thereof

A microcapsule and multifunctional technology, which is applied in the field of propellant ablation reduction, can solve the problems of reducing barrel ablation and single composition, and achieve the effect of weakening chemical erosion, reducing ablation effect, and reducing thermal ablation

Active Publication Date: 2016-05-25
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the single composition of these microcapsules, there are many factors that affect the abl

Method used

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  • Multifunctional microcapsule corrosion inhibitor and preparation method thereof
  • Multifunctional microcapsule corrosion inhibitor and preparation method thereof
  • Multifunctional microcapsule corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1g inorganic Si 3 N 4 Nanoparticles were dispersed in 150ml of ethyl acetate by high-speed shearing, then 0.33g of silane coupling agent KH550 and α-bromoisobutyryl bromide were added, stirred at 75°C for 3 hours, and then centrifuged, and the centrifuged product was polymerized with a hydrophilic monomer (Ethylene glycol) methacrylate and hydrophobic monomer methyl methacrylate are mixed evenly, then add CuBr / pentamethyldiethylenetriamine as a catalyst system, under nitrogen protection, stir until the reaction is complete, and obtain the modified Inorganic Si 3 N 4 Nanoparticles.

[0030] Weigh 1g of emulsifier sodium dodecylbenzenesulfonate and 0.02g of co-emulsifier polyvinyl alcohol into 100g of deionized water, stir to dissolve and heat to 80°C to obtain solution A; take another beaker and add 3g of endothermic material solid paraffin and placed in a constant temperature water bath at 80°C for heating. After the paraffin wax was completely melted, 3 g of monome...

Embodiment 2

[0037] Disperse 1g of inorganic titanium dioxide nanoparticles in 150mL of ethyl acetate by high-speed shearing, then add 0.33g of silane coupling agent KH550 and α-bromoisobutyryl bromide, stir at 70°C for 5h and centrifuge, and mix the centrifuged product with hydrophilic The neutral monomer poly(ethylene glycol) methacrylate and the hydrophobic monomer methyl acrylate were mixed evenly, then CuBr / pentamethyldiethylenetriamine was added as a catalyst system, and stirred until the reaction was complete under the protection of nitrogen to obtain the improved Inorganic titanium dioxide nanoparticles.

[0038] Weigh 0.5g of emulsifier sodium dodecylbenzenesulfonate and 0.01g of co-emulsifier polyvinyl alcohol into 100g of deionized water, stir to dissolve and heat to 80°C to obtain solution A; take another beaker and add 3g of endothermic material solid The paraffin was placed in a constant temperature water bath at 80°C and heated. After the paraffin was completely melted, 2.4 ...

Embodiment 3

[0040] Disperse 1 g of inorganic boron nitride nanoparticles in 150 mL of ethyl acetate under high-speed shear, then add 0.33 g of silane coupling agent KH550 and α-bromoisobutyryl bromide, stir at 80°C for 3 h, and then centrifuge, and the centrifuged product is mixed with The hydrophilic monomer poly(ethylene glycol) methacrylate and the hydrophobic monomer styrene are mixed evenly, then CuBr / pentamethyldiethylenetriamine is added as a catalyst system, and stirred until the reaction is complete under nitrogen protection to obtain Modified inorganic boron nitride nanoparticles.

[0041] Weigh 2g of emulsifier sodium dodecylbenzenesulfonate and 0.02g of co-emulsifier polyvinyl alcohol into 100g of deionized water, stir to dissolve and heat to 80°C to obtain solution A; take another beaker and add 3g of endothermic material solid paraffin and heated in a constant temperature water bath at 80°C. After the paraffin was completely melted, 6 g of monomeric styrene and 0.39 g of mod...

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Abstract

The invention discloses a multifunctional microcapsule corrosion inhibitor and a preparation method thereof. The multifunctional microcapsule corrosion inhibitor takes a heat-absorbing material, namely paraffin, as a capsule core material, an organic polymer as a capsule wall material and amphiphilicity-modified inorganic nanoparticles as a capsule wall addition agent, and is obtained according to the steps of firstly, subjecting the inorganic nanoparticles to amphiphilic modification through an atom transfer radical polymerization method, then mixing the paraffin, the amphiphilicity-modified inorganic nanoparticles and monomers with an emulsifier and a co-emulsifier to obtain oil-water emulsion under high-speed shearing, and finally adding an initiator to react. The multifunctional microcapsule corrosion inhibitor has the advantages that the filling problem of the high-energy propellant charge filling corrosion inhibitor is solved, and different substances in microcapsules achieve synergistic effects, namely heat-absorbing characteristic of the paraffin, compatibility of the organic polymer and propellant charge, increase of CO/CO2 ratio in a laminar boundary layer and high resistance to heat and wear and low heat conductivity of the inorganic nanoparticles, so that ablation resistance of a gun barrel is reduced in multiple angles.

Description

technical field [0001] The invention belongs to the technical field of propellants for reducing ablation, and in particular relates to a multifunctional microcapsule corrosion inhibitor and a preparation method thereof. Background technique [0002] Modern warfare requires artillery to have a higher muzzle velocity to increase the range and a higher rate of fire to enhance firepower. With the increase of muzzle velocity, chamber pressure, and rate of fire, the ablation and wear of the gun bore is very serious, which greatly shortens the life of the weapon. service life. Aiming at the problem of ablation and wear of barrel weapons, experts and scholars at home and abroad have explored various measures such as the use of low-explosion temperature propellants, inner bore coating technology, anti-ablation liner technology, corrosion inhibitor technology, and composite barrel manufacturing technology. Improve barrel life. Among them, adding corrosion inhibitors to the propellan...

Claims

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Application Information

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IPC IPC(8): C06B23/00B01J13/14C23F11/02
CPCB01J13/14C06B23/00C23F11/02
Inventor 肖正刚孙娜孟祥军
Owner NANJING UNIV OF SCI & TECH
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