Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antibacterial coating for inner wall of aviation fuel tank and preparation method thereof

An antibacterial coating and fuel tank technology, applied in coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve the problems of coating antibacterial performance decline, antibacterial agent dissolution, cytotoxicity, etc., and achieve easy The effect of control, low cost and mild preparation process conditions

Active Publication Date: 2022-08-09
SICHUAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although guanidine antimicrobials have been widely used in various fields and act as an effective microbial inactivator, their water solubility can easily lead to the dissolution of antibacterial agents from the coating system, causing potential risks to the human body and the environment, such as cell Toxicity, water pollution, etc.
In addition, the dissolution of antibacterial agents is also the root cause of the decline or even loss of the antibacterial performance of the coating.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antibacterial coating for inner wall of aviation fuel tank and preparation method thereof
  • Antibacterial coating for inner wall of aviation fuel tank and preparation method thereof
  • Antibacterial coating for inner wall of aviation fuel tank and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare an aqueous solution of sodium stearate (SS) with a mass fraction of 5%, heat the SS solution to 70 °C to completely dissolve it, and slowly add the PHMB solution dropwise. The composite antibacterial agent PHMB-SS was obtained by thermal insulation polymerization for 3.5 h and then directly filtered, which was washed three times with hot water and dried at 60 °C under vacuum.

[0024]The mass fraction of 1 % polyvinyl butyral (PVB) and the mass fraction of 0.1 % PHMB-SS were added to the absolute ethanol solution, and the two were mixed to prepare a mixed solution of PVB and PHMB-SS. After the aluminum sheet was polished with 1000-grit sandpaper, ultrasonically cleaned with acetone, absolute ethanol and distilled water for ten minutes in turn, and dried. The dried aluminum sheet is repeatedly immersed in the above mixed solution for 3 times, so that the surface of the aluminum sheet is evenly covered with an antibacterial coating, and then dried to obtain an ant...

Embodiment 2

[0026] Prepare a 10% sodium stearate (SS) aqueous solution, heat the SS solution to 90 °C to dissolve it completely, slowly add the PHMG solution dropwise, and control the molar ratio of SS acid group to PHMG guanidine group at 1.0:1.0, After 2 h of polymerization, the composite antibacterial agent PHMG-SS was obtained by direct filtration, which was washed three times with hot water and dried under vacuum at 60 °C;

[0027] The mass fraction of 5% polyvinyl butyral (PVB) and the mass fraction of 0.5% PHMG-SS were added to the absolute ethanol solution, and the two were mixed to prepare a mixed solution of PVB and PHMG-SS. After the aluminum sheet was polished with 1000-grit sandpaper, ultrasonically cleaned with acetone, absolute ethanol and distilled water for ten minutes in turn, and dried. The dried aluminum sheet is immersed in the above mixed solution once to make the surface evenly covered with an antibacterial coating, taken out and then dried to obtain an antibacteria...

Embodiment 3

[0029] Prepare an aqueous solution of sodium palmitate (SP) with a mass fraction of 15%, heat the SP solution to 60 °C to completely dissolve it, slowly add the PHMG solution dropwise, and control the molar ratio of SP acid group to PHMG guanidine group at 1.0:2.0, keep the temperature After 2 h of polymerization, it was directly filtered to obtain the composite antibacterial agent PHMG-SP, which was washed with hot water for three times and dried under vacuum at 60 °C;

[0030] The mass fraction of 10 % polyvinyl butyral (PVB) and the mass fraction of 1 % PHMG-SP were added to the absolute ethanol solution, and the two were mixed to prepare a mixed solution of PVB and PHMG-SP. After the aluminum sheet was polished with 1000-grit sandpaper, ultrasonically cleaned with acetone, absolute ethanol and distilled water for ten minutes in turn, and dried. Then, the prepared coating working solution is evenly sprayed on the dried aluminum sheet to form a uniform antibacterial coating ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
degree of polymerizationaaaaaaaaaa
quality scoreaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention discloses an antibacterial coating for the inner wall of an aviation fuel tank and a preparation method thereof. The antibacterial agent in the antibacterial coating of the present invention is a water-insoluble compound composed of polymer guanidine salt and fatty acid salt, and the compound antibacterial agent and the binder polyvinyl butyral have good compatibility in a certain solvent . The mixed solution of the composite antibacterial agent and polyvinyl butyral is coated on the aluminum sheet by dip coating method or spraying method, and an antibacterial coating is formed on the surface of the aluminum sheet after drying. The method is simple and easy to operate, and has no pollution to the environment. Easy to mass-produce continuously. The antibacterial coating endows the aluminum sheet with excellent antibacterial properties, and the antibacterial rate can reach 100% after being in contact with bacteria for 10 minutes. The dissolution of the antibacterial agent has high-efficiency, long-lasting, broad-spectrum and rapid antibacterial properties, which can effectively avoid the corrosion of the inner wall of the aviation fuel tank, the deterioration of the fuel quality, and the engine failure caused by microbial contamination.

Description

technical field [0001] The invention belongs to the technical field of antibacterial coatings for plates, and in particular relates to an antibacterial coating with broad-spectrum, high efficiency and safety on the surface of aluminum sheets and a preparation method thereof. Background technique [0002] Aviation fuel is the working medium of aircraft fuel system, power unit system and auxiliary power unit system, and is the source of energy for the whole aircraft. Aviation fuel is mainly C6-C16 hydrocarbons, which are volatile, have high saturated vapor pressure and strong hygroscopicity. In most cases, microorganisms will choose C10-C18 hydrocarbons as nutrient sources, and the moisture in fuel provides a suitable environment for the growth of microorganisms, making aviation fuel more susceptible to microbial contamination than gasoline. Therefore, the cleanliness of aviation fuel is directly related to the normal operation of the engine and the flight safety of the aircr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D129/14C09D5/14
CPCC09D129/14C09D5/14C08L79/00C08K5/098
Inventor 谭淋张杰施亦东谭鹏飞杨峰
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com