摘要:
It is highly feasible to utilize phase change energy storage technology to construct a phase change material (PCM)-based thermal management system for electronic devices. In this paper, stearic acid (SA) was used as the PCM, and expanded graphite (EG) was chosen as the carrier to prepare SA/EG CPCM. The results showed that EG could prevent the melted SA from leaking, and the combination between SA and EG was only physical. When the mass fraction of EG was 11%, the SA/EG CPCM had good shape stability with a phase change temperature (T-m) of 67.2 degrees C, a phase change enthalpy (triangle H-m) of 204.4 J/g, and a significantly increased in thermal conductivity (6.432 W/(m<middle dot>K)). In addition, simulation test experiments showed that the peak value of the heating surface was weakened by about 20 degrees C in the heating stage after loading the CPCM on the electronic device. Therefore, the resultant SA/EG CPCM in this work had great application value.
期刊:
Journal of Building Engineering,2025年105:112474 ISSN:2352-7102
通讯作者:
Li, ZP
作者机构:
[Gong, Jing; Liu, Jiesheng] Wuhan Polytech Univ, Sch Civil Engn & Architecture, Wuhan 430023, Peoples R China.;[Gong, Jing] Wuchang Univ Technol, Intelligent Construct Coll, Wuhan 430223, Peoples R China.;[Chen, Chaoqian] Int Water Resources & Hydropower Engn Construct Co, Wuhan 460050, Peoples R China.;[Li, Zhipeng; Li, ZP] Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA.;[Li, Zhipeng] CarbonSilvanus Co, Pullman, WA 99163 USA.
通讯机构:
[Li, ZP ] W;Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA.
关键词:
Class F fly ash;Municipal solid waste incineration fly ash (MSWIA);Mechanical strength;Deconvoluted Fourier transform infrared (FTIR) spectroscopy;Hydration products
摘要:
Class F fly ash (FA) is often limited in its application in the concrete industry due to its low hydration reactivity. This study explores the synergistic utilization of municipal solid waste incineration fly ash (MSWIA) and FA to valorize these two industrial waste streams for application in the concrete industry, aimed to reduce the carbon footprint associated with extensive cement use. The study proposes replacing part of the cement with MSWIA and Class F FA, with a baseline mix ratio of MSWIA: FA: Cement = 40 %:40 %:20 %. In addition, silica fume (SF), nano-montmorillonite (nMMT), and calcium oxide (CaO) were added to the system to modify and activate the binder, with the goal of meeting practical engineering requirements. Experimental results indicate that the optimal dosages are 15 % SF/(FA + MSWIA), 0.3 % nMMT/(FA + MSWIA), and 3 % CaO/(FA + MSWIA), achieving a 28-day compressive strength of 21.1 MPa, which represents an increase of 186 % compared with the control group. Furthermore, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and deconvoluted Fourier transform infrared spectroscopy (FTIR) were used to investigate the effects of various variables on the microstructural morphology, hydration process, and hydration products of the paste samples. The results demonstrate that the addition of SF, nMMT, and CaO not only promotes the formation of highly polymerized hydration products, refines the pore structure, and improves the microstructural compactness but also significantly enhances the overall mechanical properties and durability of the cementitious system.
Class F fly ash (FA) is often limited in its application in the concrete industry due to its low hydration reactivity. This study explores the synergistic utilization of municipal solid waste incineration fly ash (MSWIA) and FA to valorize these two industrial waste streams for application in the concrete industry, aimed to reduce the carbon footprint associated with extensive cement use. The study proposes replacing part of the cement with MSWIA and Class F FA, with a baseline mix ratio of MSWIA: FA: Cement = 40 %:40 %:20 %. In addition, silica fume (SF), nano-montmorillonite (nMMT), and calcium oxide (CaO) were added to the system to modify and activate the binder, with the goal of meeting practical engineering requirements. Experimental results indicate that the optimal dosages are 15 % SF/(FA + MSWIA), 0.3 % nMMT/(FA + MSWIA), and 3 % CaO/(FA + MSWIA), achieving a 28-day compressive strength of 21.1 MPa, which represents an increase of 186 % compared with the control group. Furthermore, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and deconvoluted Fourier transform infrared spectroscopy (FTIR) were used to investigate the effects of various variables on the microstructural morphology, hydration process, and hydration products of the paste samples. The results demonstrate that the addition of SF, nMMT, and CaO not only promotes the formation of highly polymerized hydration products, refines the pore structure, and improves the microstructural compactness but also significantly enhances the overall mechanical properties and durability of the cementitious system.
摘要:
In this study, Co 0.2 CrFeNiMo 0.8 powders were synthesized via mechanical alloying, and subsequently mixed with (Ti,W)C and Ni powders to fabricate (Ti,W)C–(30- x )Ni- x Co 0.2 CrFeNiMo 0.8 (wt.%, x = 0, 5, 10, 15, 20, 25 and 30) cermets by powder metallurgy. The effects of substituting Ni with Co 0.2 CrFeNiMo 0.8 powder on the microstructure and magnetic properties of the cermets were investigated. The results revealed that all cermets predominantly consisted of Ti-based solid solution carbide ceramic grains with a weak core-rim structure and an FCC-structured binder phase. Initially, both the initial magnetic susceptibility and magnetization (20 kOe) showed only minor fluctuations as the amount of Co 0.2 CrFeNiMo 0.8 rose from 0 to 20 wt.%. However, they showed a dramatically decreasing trend when the Co 0.2 CrFeNiMo 0.8 reached 25 wt.%, and the cermet transitioned to paramagnetism at 235 K. This was predominantly ascribed to the elevated Co 0.2 CrFeNiMo 0.8 content, which resulted in a higher Fe concentration in the binder phase, subsequently weakening the magnetization of the cermets. The present work elucidates the contribution of the Fe element to the magnetic properties of the cermets, and provides important theoretical support for the magnetic regulation of cermets with transition metal-based high-entropy alloys binders.
In this study, Co 0.2 CrFeNiMo 0.8 powders were synthesized via mechanical alloying, and subsequently mixed with (Ti,W)C and Ni powders to fabricate (Ti,W)C–(30- x )Ni- x Co 0.2 CrFeNiMo 0.8 (wt.%, x = 0, 5, 10, 15, 20, 25 and 30) cermets by powder metallurgy. The effects of substituting Ni with Co 0.2 CrFeNiMo 0.8 powder on the microstructure and magnetic properties of the cermets were investigated. The results revealed that all cermets predominantly consisted of Ti-based solid solution carbide ceramic grains with a weak core-rim structure and an FCC-structured binder phase. Initially, both the initial magnetic susceptibility and magnetization (20 kOe) showed only minor fluctuations as the amount of Co 0.2 CrFeNiMo 0.8 rose from 0 to 20 wt.%. However, they showed a dramatically decreasing trend when the Co 0.2 CrFeNiMo 0.8 reached 25 wt.%, and the cermet transitioned to paramagnetism at 235 K. This was predominantly ascribed to the elevated Co 0.2 CrFeNiMo 0.8 content, which resulted in a higher Fe concentration in the binder phase, subsequently weakening the magnetization of the cermets. The present work elucidates the contribution of the Fe element to the magnetic properties of the cermets, and provides important theoretical support for the magnetic regulation of cermets with transition metal-based high-entropy alloys binders.
摘要:
In this work, CoCrFeNiMo-Ni bonded (Ti,W)C-based cermets with varying nano-TiN incorporations were fabricated through vacuum sintering, and their corrosion behavior in 1mol/L NaOH solution was systematically explored via electrochemical corrosion testing, including open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy. The corrosion mechanism was further characterized on the basis of the morphology and composition characterization of corrosion products. Unlike the conventional cermets using Ni/Co as the whole binder, the CoCrFeNiMo-Ni bonded cermets presented significantly enhanced corrosion resistance in NaOH solution. This enhancement was highly correlated with the generation of passive products on the cermet surface, predominantly composed of TiO 2 , Cr 2 O 3 , Cr(OH) 3 , Fe(OH) 3 , Fe 2 O3, Fe 3 O4, Co 3 O 4 , Co(OH) 2 , NiO and Ni(OH) 2 , which effectively inhibited further corrosion. Upon varying the nano-TiN content within the range of 0 - 2.5 wt.%, the corrosion resistance was significantly enhanced. The corrosion potential exhibited a positive shift from -0.248 V to -0.216 V (vs Hg/HgO), accompanied by a diminishment in corrosion current densities from 4.859 μA/cm 2 to 1.619 μA/cm 2 , with a decrease of about 67%. This was mainly attributed to the increased TiO 2 , Cr 2 O 3 , and Cr(OH) 3 content in corrosion products, reduced ceramic particle size and enhanced creased density of cermets. However, excessive incorporation of nano-TiN induced the porosity and the formation of more M 6 C phases, which eventually weakened the corrosion resistance.
In this work, CoCrFeNiMo-Ni bonded (Ti,W)C-based cermets with varying nano-TiN incorporations were fabricated through vacuum sintering, and their corrosion behavior in 1mol/L NaOH solution was systematically explored via electrochemical corrosion testing, including open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy. The corrosion mechanism was further characterized on the basis of the morphology and composition characterization of corrosion products. Unlike the conventional cermets using Ni/Co as the whole binder, the CoCrFeNiMo-Ni bonded cermets presented significantly enhanced corrosion resistance in NaOH solution. This enhancement was highly correlated with the generation of passive products on the cermet surface, predominantly composed of TiO 2 , Cr 2 O 3 , Cr(OH) 3 , Fe(OH) 3 , Fe 2 O3, Fe 3 O4, Co 3 O 4 , Co(OH) 2 , NiO and Ni(OH) 2 , which effectively inhibited further corrosion. Upon varying the nano-TiN content within the range of 0 - 2.5 wt.%, the corrosion resistance was significantly enhanced. The corrosion potential exhibited a positive shift from -0.248 V to -0.216 V (vs Hg/HgO), accompanied by a diminishment in corrosion current densities from 4.859 μA/cm 2 to 1.619 μA/cm 2 , with a decrease of about 67%. This was mainly attributed to the increased TiO 2 , Cr 2 O 3 , and Cr(OH) 3 content in corrosion products, reduced ceramic particle size and enhanced creased density of cermets. However, excessive incorporation of nano-TiN induced the porosity and the formation of more M 6 C phases, which eventually weakened the corrosion resistance.
期刊:
Materials Chemistry and Physics: Sustainability and Energy,2025年:100037 ISSN:3050-4716
通讯作者:
Hao Peng
作者机构:
[Jintao Ma; Jiayue Lao; Liuwei Chen; Zhili Zhao; Ning Xia; Hao Peng; Wanwan Fu; Jiesheng Liu] School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China
通讯机构:
[Hao Peng] S;School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan 430023, China
摘要:
This study aims to explore the formation of a new type of building energy-saving material by combining inorganic hydrated salt phase change materials (PCMs) with expanded graphite (EG), to enable effective thermal exchange between the building envelope and the external environment, and enhance the thermal comfort of buildings. By dissolving a mixture (as PCM) of sodium thiosulfate pentahydrate (STP), sodium acetate trihydrate (SAT), and urea through a water bath heating process, and then incorporating it into EG, a composite phase change material (CPCM) with excellent thermal properties was prepared. The results of SEM, pore structure analysis, FT-IR and XRD showed that the pores and surfaces of EG were covered by PCM and that the binding of EG to PCM was a physical interaction. The thermal conductivity of CPCM was 6.819 W/(m·K), the phase transition temperature was 37.4 °C, and a melting enthalpy of 160.3 J/g. The addition of EG significantly increased the thermal conductivity of the material. Leakage experiments and 200 thermal cycling tests indicated that the prepared CPCM had good leakage protection and thermal stability, demonstrating its broad application prospects in the field of building energy conservation.
This study aims to explore the formation of a new type of building energy-saving material by combining inorganic hydrated salt phase change materials (PCMs) with expanded graphite (EG), to enable effective thermal exchange between the building envelope and the external environment, and enhance the thermal comfort of buildings. By dissolving a mixture (as PCM) of sodium thiosulfate pentahydrate (STP), sodium acetate trihydrate (SAT), and urea through a water bath heating process, and then incorporating it into EG, a composite phase change material (CPCM) with excellent thermal properties was prepared. The results of SEM, pore structure analysis, FT-IR and XRD showed that the pores and surfaces of EG were covered by PCM and that the binding of EG to PCM was a physical interaction. The thermal conductivity of CPCM was 6.819 W/(m·K), the phase transition temperature was 37.4 °C, and a melting enthalpy of 160.3 J/g. The addition of EG significantly increased the thermal conductivity of the material. Leakage experiments and 200 thermal cycling tests indicated that the prepared CPCM had good leakage protection and thermal stability, demonstrating its broad application prospects in the field of building energy conservation.
关键词:
Phase change microcapsules;Methyl palmitate;Polyurea;Thermal energy storage;Interfacial polymerization
摘要:
In this study, a methyl palmitate-polyurea phase change microcapsule (MPCM) was successfully synthesized by interfacial polymerization with methyl palmitate with high latent heat as the core material and tolylene-2,4-diisocyanate (TDI) and diethylene triamine (DETA) as the shell monomers. The effects of emulsifier type and content, cosolvent, reaction rate and core-shell mass ratio on the phase change properties of microcapsules were systematically discussed, and the optimum process was determined. A series of characterization techniques were used to analyze the composition, crystal structure, morphology, microstructure, particle size distribution and thermal performances of the microcapsules. The experimental results presented that the microcapsules synthesized under the optimal conditions had outstanding encapsulation efficiency (72.42 %) and encapsulation rate (70.77 %) with melting temperature and solidification temperature of 27.2 °C and 13.8 °C, and melting enthalpy and solidification enthalpy of 160.5J/g and 157.3J/g, respectively. Moreover, the resulting microcapsules had regularly spherical morphology with compact and smooth surface, and uniform particle size distribution with average particle size of 909.94 nm. Meanwhile, the microcapsules possessed excellent thermal stability, low thermal conductivity (0.2932 W K −1 m −1 ) and excellent thermal reliability. These characteristics made methyl palmitate-polyurea MPCMs have a broad application prospect in the field of thermal insulation.
In this study, a methyl palmitate-polyurea phase change microcapsule (MPCM) was successfully synthesized by interfacial polymerization with methyl palmitate with high latent heat as the core material and tolylene-2,4-diisocyanate (TDI) and diethylene triamine (DETA) as the shell monomers. The effects of emulsifier type and content, cosolvent, reaction rate and core-shell mass ratio on the phase change properties of microcapsules were systematically discussed, and the optimum process was determined. A series of characterization techniques were used to analyze the composition, crystal structure, morphology, microstructure, particle size distribution and thermal performances of the microcapsules. The experimental results presented that the microcapsules synthesized under the optimal conditions had outstanding encapsulation efficiency (72.42 %) and encapsulation rate (70.77 %) with melting temperature and solidification temperature of 27.2 °C and 13.8 °C, and melting enthalpy and solidification enthalpy of 160.5J/g and 157.3J/g, respectively. Moreover, the resulting microcapsules had regularly spherical morphology with compact and smooth surface, and uniform particle size distribution with average particle size of 909.94 nm. Meanwhile, the microcapsules possessed excellent thermal stability, low thermal conductivity (0.2932 W K −1 m −1 ) and excellent thermal reliability. These characteristics made methyl palmitate-polyurea MPCMs have a broad application prospect in the field of thermal insulation.
摘要:
Geopolymers are coating materials with excellent properties that have received considerable attention due to their high resistance to weathering, chemical attack, abrasion, and adhesion. This paper further investigates the performance of geopolymer-based coatings by examining the effect of varying percentages of zinc oxide on their antimicrobial and durability properties. The performance of the coatings was evaluated following durability tests with the incorporation of different zinc oxide doping levels. Furthermore, to demonstrate the degree of antibacterial properties of the coating, test plates were treated with two common fungi and bacteria, and the number of bacterial colonies was observed. Results showed good stability and antimicrobial properties when coating with ZnO.
摘要:
In this paper, the effects of the phosphogypsum (PG) content at 0%–50% and the calcination at 750°C, 800°C, and 850°C on the properties of cement mortar were studied. It is observed that the optimal mechanical properties of cement mortar are achieved when the PG content is 30% and calcined at a temperature of 800°C. Building upon these findings, further investigations were conducted to explore the effect of 0%–5% quicklime aging treatment combined with calcination on the properties of cement mortar. The results show that the samples prepared with PG aging with 2% lime and calcined at 800°C exhibit the best mechanical properties. In addition, it is revealed that the mechanical strength shows similar trends compared to the activation index for PG cement mortar. Physical properties tests and microstructure observation indicate that combining calcination with quicklime modification represents an effective approach to the use of PG in the field of building materials.
摘要:
Nowadays, geopolymer coatings have been studied a lot due to their green and sustainable properties, and they have a great potential to partially replace traditional coatings in terms of corrosion resistance and economy. In this study, metakaolin-based geopolymer coating was used as the control group, and anticorrosive coatings were prepared by adding different dosages (2–8 wt%) of ZnO fillers to study the effect of ZnO on physical properties and anticorrosion properties of metakaolin-based geopolymer anticorrosive coatings. The results showed that when the mass fraction of the zinc oxide was 8%, it had the optimum effect on physical performance. The water absorption was 12.4%, and the toughness was 3 mm. In addition, the anticorrosive properties of the coating were studied by sodium chloride (NaCl) solution immersion test, wet–dry cyclic test, salt spray test, and electrochemical test. In sodium chloride (NaCl) solution immersion, wet–dry cycle, and salt spray test, a reduction of 43.8%, 50.6%, and 74.2% in corrosion area ratio, respectively, were achieved with a coating of 8% ZnO filled as compared with pure geopolymer coatings. The results indicated that the addition of ZnO enhanced the anticorrosion performance of the coating. The macroscopic test results were verified by SEM. This study lays a foundation for the subsequent research and performance improvement of metakaolin-based geopolymer anticorrosive coatings.
关键词:
Na2HPO4 center dot 12H(2)O;silica aerogel;composite phase change material;building energy conservation;thermal performance
摘要:
In this paper, a morphologically stable composite phase change material (CPCM) suitable for use in the field of building energy conservation was developed using Na2HPO4∙12H2O (DHPD) as the phase change material, Na2SiO3∙9H2O (SSNH) as the nucleating agent, and silica aerogel (SA) as the carrier. The results showed that the incorporation of 25 wt% SA resulted in the as-prepared DHPD-SSNH/SA CPCM with a phase change temperature of 30.4 °C, an enthalpy of 163.4 J/g, and a low supercooling degree of 1.3 °C, which also solved the corrosion problem of reinforcing bars caused by the hydrated salt PCM. Meanwhile, DHPD-SSNH/SA CPCM had good shape stability and low thermal conductivity (0.1507 W/(m·K)). The phase change temperature was basically unchanged, and the enthalpy only decreased by 4.8% after 200 cold-heat cycles. In addition, the thermal performance evaluation of CPCM showed that the indoor thermal comfort time of the testing system loaded with PCM board accounted for 50.75%, which was 43.38% higher than that of the one without PCM board (7.37%). The results suggest that the obtained CPCM had a good energy saving effect and great potential in the field of building energy conservation.
摘要:
Phase change energy storage technology using phase change materials (PCMs) is a viable solution to effectively address the heat dissipation problems of electronic devices. Herein, we proposed to prepare a modified PCM using CH3COONa center dot 3H(2)O (SAT) as main PCM, 9 wt% DL-Alanine (DL) as temperature modifier, and 2 wt% Na2HPO4 center dot 12H(2)O as nucleating agent. Calculations using density functional theory method confirmed that the adjustment of DL on phase change temperature of SAT was originated from the hydrogen bond between them. Then, the modified PCM was loaded into 14 wt% expanded graphite (EG) to obtain a composite PCM with a suitable phase change temperature of 52.9 degrees C, phase change enthalpy of 227.4 J/g as well as supercooling degree of 6.6 degrees C, and the thermal conductivity of the composite PCM was as high as 11.52 W.m(-1).K-1. SEM and pore structure analyses showed that the modified PCM was successfully loaded into the pore structure of EG, and their combination was verified by XRD and FT-IR as a physical interaction. After 200 heating-cooling cycles, the phase change temperature and enthalpy of the composite PCM was basically unchanged along with consistent crystal structure and chemical composition, showing an excellent thermal reliability. A comparative analysis applied in a testing system showed that with loading of the composite PCM temperature control module, the critical time of the electronic chip was extended by 4670 s and the thermal equilibrium temperature was decreased by 20.4 degrees C, presenting a good thermal management performance. Therefore, the prepared composite PCM had great potential for application in thermal management of electronic devices.
摘要:
The influence of polymer emulsion, pigment filler, and dispersant on the corrosion resistance of polymer cement-based composite anti-corrosion coatings were investigated in this study. Adhesion loss rate tests and electrochemical tests were conducted on samples. The research results show that optimal corrosion resistance can be achieved with a 45 wt% dosage of emulsion, a 6 wt% dosage of pigment filler, and a 0.30 wt% dosage of dispersant. The bonding properties of bare steel bars, epoxy-coated steel bars, and polymer cement-based composite anti-corrosion coated steel bars with grout were compared. The results show that the polymer cement-based composite anti-corrosion coating can enhance the bonding properties of the samples. Furthermore, the microscopic analysis was conducted on the samples. The results demonstrate that the appropriate addition of emulsion can fill internal pores of the coating, tightly bonding hydration products with unhydrated cement particles. Moreover, incorporating a suitable dosage of functional additives enhances the stability of the coating system and leads to a denser microstructure.
摘要:
This paper examines the feasibility of the natural soil and sewage sludge ash (SSA) mixtures, which satisfy the criteria to be used as landfill liners. The effect of SSA content on hydraulic conductivity and strength characteristics of natural soil and SSA mixtures has been investigated through a series of laboratory tests. The results demonstrate that mixtures exhibit an increase in both hydrodynamic diffusion coefficient and strength with the increasing SSA content. With the content of SSA from 0% to 5%, the values of the hydrodynamic diffusion coefficient (D) ranged from 3.5 × 10(-10) to 15 × 10(-10) cm(2)/s. The increase in the hydrodynamic diffusion coefficient is minor for low SSA content and significant for SSA content exceeding 5%. The inclusion of 5% SSA content results in a hydrodynamic diffusion coefficient that is approximately three times higher than that observed in natural soil. The results were obtained from soil triaxial tests, revealing that the mixtures containing SSA exhibited a significant increase in both the initial tangent modulus and the ultimate principal stress difference compared to those of natural soil. The SSA content with the highest value exhibits maximum initial tangent modulus and ultimate principal stress. The comprehensive analysis of the strength and hydraulic diffusion conductivity of the mixtures demonstrates that the incorporation of 3% SSA results in a significant enhancement in strength, while marginally increasing hydrodynamic diffusion coefficients. Therefore, it can be inferred that the utilization of mixtures containing 3% SSA content as a liner material is suitable.
摘要:
Polyaniline has been extensively used for the corrosion protection of polymeric materials. However, there have been few studies on its combined antimicrobial activity when used in combination with silver molybdate. In this study, we synthesized silver molybdate (Ag2MoO4) 2 MoO 4 ) crystals using a homogeneous precipitation method. Polyaniline-dodecylbenzenesulfonic acid/castor oil(PANI-DBSA/CO) mixtures were prepared in an encapsulated state by in situ polymerisation. Subsequently, PANI/Ag2MoO4-PU 2 MoO 4-PU interpenetrating polymer network(IPN) composite coatings(P/A-PU) were produced by dispersing Ag2MoO4 2 MoO 4 and PANI-DBSA/CO in polyurethane using ultrasonic dispersion. The composite coatings were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis(XRD), and transmission electron microscopy(TEM). The study confirmed that composite coatings with uniformly dispersed nanoparticles of PANI and Ag2MoO4 2 MoO 4 encapsulated by CO and epoxy resin E-44 grease exhibit improved physico-mechanical characteristics. The research also evaluated the effect of nanoparticles on the corrosion behaviour of the coatings using electrochemical impedance spectroscopy and kinetic potential polarisation experiments. The study investigated the antimicrobial properties of P/A-PU composite coatings on Escherichia coli(E.coli) and Staphylococcus aureus(S.aureus) by conducting bacterial growth curves, protein leakage, and fluorescence staining experiments. The aim was to establish a causal connection between the coated surfaces and the observed antimicrobial properties. The study demonstrated that incorporating IPN of polyaniline polyurethane into the coating composites improved their anticorrosive properties. Furthermore, the addition of silver molybdate at a mass ratio of 0.3 % resulted in a remarkable 99 % antimicrobial activity against E.coli and S.aureus.