Pub Date : 2023-03-12DOI: 10.1080/09276440.2023.2189684
Langlin Zheng, Xue-ping Gan, Chaoqiang Liu, K. Zhou
ABSTRACT The service conditions of high temperature and heavy load of aero-engine require high-temperature self-lubricating composites with high strength, low wear and long life. Hence, the high-level objective of this study is to regulate the interface between the substrate and hexagonal boron nitride (h-BN) lubricant in GH4169 nickel-based high-temperature self-lubricating composites to improve the interfacial bonding strength and the overall performance. Electroless plating method was adopted to coat nickel on h-BN, and the dense high-temperature self-lubricating composites were fabricated through hot-pressing sintering. The effects of nickel coating on h-BN on the microstructure, mechanical properties and high-temperature tribological behaviors of composites were analyzed in detail, and the lubrication mechanism was also elucidated. The results illustrate the Ni@h-BN/GH4169 composites with addition of chemically modified lubricant particles have excellent mechanical properties and lubrication and wear reduction properties, compared to h-BN/GH4169 composites. This is mainly due to the introduction of nickel coating contributed to the distribution uniformity of h-BN in the matrix, and the wettability between h-BN and the substrate together with interfacial bonding strength were enhanced as well. This work provides an insight to overcome the challenges facing the technology when using GH4169 nickel-based self-lubricating composites in manufacturing of mechanical components in aerospace.
{"title":"Improving properties of h-BN/GH4169 self-lubricating composites prepared using nickel coated h-BN powders","authors":"Langlin Zheng, Xue-ping Gan, Chaoqiang Liu, K. Zhou","doi":"10.1080/09276440.2023.2189684","DOIUrl":"https://doi.org/10.1080/09276440.2023.2189684","url":null,"abstract":"ABSTRACT The service conditions of high temperature and heavy load of aero-engine require high-temperature self-lubricating composites with high strength, low wear and long life. Hence, the high-level objective of this study is to regulate the interface between the substrate and hexagonal boron nitride (h-BN) lubricant in GH4169 nickel-based high-temperature self-lubricating composites to improve the interfacial bonding strength and the overall performance. Electroless plating method was adopted to coat nickel on h-BN, and the dense high-temperature self-lubricating composites were fabricated through hot-pressing sintering. The effects of nickel coating on h-BN on the microstructure, mechanical properties and high-temperature tribological behaviors of composites were analyzed in detail, and the lubrication mechanism was also elucidated. The results illustrate the Ni@h-BN/GH4169 composites with addition of chemically modified lubricant particles have excellent mechanical properties and lubrication and wear reduction properties, compared to h-BN/GH4169 composites. This is mainly due to the introduction of nickel coating contributed to the distribution uniformity of h-BN in the matrix, and the wettability between h-BN and the substrate together with interfacial bonding strength were enhanced as well. This work provides an insight to overcome the challenges facing the technology when using GH4169 nickel-based self-lubricating composites in manufacturing of mechanical components in aerospace.","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"4 1","pages":"1099 - 1117"},"PeriodicalIF":2.6,"publicationDate":"2023-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86404031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-08DOI: 10.1080/09276440.2023.2185352
Wang Yi, Y. Xiang, guang-de Li, hai-Feng Cheng, jian-Hui Cao, Cao Jie, yin-Wei Ma
ABSTRACT Mechanical properties of NextelTM 440 fiber-reinforced SiO2 composites containing fugitive carbon (FC) interphases were investigated. The three-point bending (TPB) test at room temperature indicated that FC interphases were crucial to the strength improvement. After employing FC interphases, the fiber/matrix bonding strength was weak enough for crack propagation, thus leading to the increase of flexural strength by about 2.1 times. The TPB test at high-temperature showed that the flexural strength decreased firstly and then increased as temperature increased, and the fracture mode changed from ductile to brittle. The lowest value of 92.3 ± 13.5 (MPa) was obtained at 1000°C. With the aid of the single edge notched beam test combined with the digital image correlation technique, cracks propagation process during fracture was well clarified.
{"title":"Mechanical properties of N440/SiO2 composites with fugitive carbon interphases","authors":"Wang Yi, Y. Xiang, guang-de Li, hai-Feng Cheng, jian-Hui Cao, Cao Jie, yin-Wei Ma","doi":"10.1080/09276440.2023.2185352","DOIUrl":"https://doi.org/10.1080/09276440.2023.2185352","url":null,"abstract":"ABSTRACT Mechanical properties of NextelTM 440 fiber-reinforced SiO2 composites containing fugitive carbon (FC) interphases were investigated. The three-point bending (TPB) test at room temperature indicated that FC interphases were crucial to the strength improvement. After employing FC interphases, the fiber/matrix bonding strength was weak enough for crack propagation, thus leading to the increase of flexural strength by about 2.1 times. The TPB test at high-temperature showed that the flexural strength decreased firstly and then increased as temperature increased, and the fracture mode changed from ductile to brittle. The lowest value of 92.3 ± 13.5 (MPa) was obtained at 1000°C. With the aid of the single edge notched beam test combined with the digital image correlation technique, cracks propagation process during fracture was well clarified.","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"133 1","pages":"1075 - 1084"},"PeriodicalIF":2.6,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79822254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-06DOI: 10.1080/09276440.2023.2179250
Binbin Li, Shenghui Qian, Cong Sun, Min Wang, X. Zhan
ABSTRACT Carbon fiber-reinforced resin matrix composites have been utilized as structural and bearing parts in aerospace because of their high specific strength and modulus. To improve the mechanical properties and wear resistance of carbon fiber-reinforced epoxy resin composites, we propose the in-situ growth of SiC nanowires on the surface of carbon fiber by a Chemical Vapor Deposition method. The effect of the addition of nanowires on the mechanical strength and wear resistance of carbon fiber-reinforced epoxy resin composites was investigated. The results indicated that the tensile strength and bending strength of SiCnws / C f / epoxy resin composites increased by 13.8% and 16.2% on the condition that the concentration of Ni(NO3)2 catalyst was 0.1 mol/L, respectively. The improvement of the mechanical properties could be attributed to the mechanical interlocking affection between carbon fiber and SiC nanowires. In addition, due to SiC nanowires with a three-dimensional network structure on the surface of carbon fiber, the stronger adhesive force between epoxy matrix SiC nanowires protected the resin matrix and carbon fiber from abrasion. The wear rate of SiCnws / C f / epoxy composites was reduced by 98.1%. GRAPHICAL ABSTRACT
碳纤维增强树脂基复合材料具有高比强度和高模量，已广泛应用于航空航天结构和轴承部件。为了提高碳纤维增强环氧树脂复合材料的力学性能和耐磨性，提出了采用化学气相沉积法在碳纤维表面原位生长SiC纳米线的方法。研究了纳米线的加入对碳纤维增强环氧树脂复合材料机械强度和耐磨性的影响。结果表明，当Ni(NO3)2催化剂的浓度为0.1 mol/L时，SiCnws / C f /环氧树脂复合材料的拉伸强度和弯曲强度分别提高了13.8%和16.2%。碳纤维与碳化硅纳米线之间的机械互锁作用是其力学性能提高的主要原因。此外，由于碳化硅纳米线在碳纤维表面具有三维网状结构，环氧基碳化硅纳米线之间的附着力更强，保护了树脂基体和碳纤维免受磨损。SiCnws / C - f /环氧复合材料的磨损率降低了98.1%。图形抽象
{"title":"Mechanical properties and wear resistance of Cf / epoxy resin composites with in-situ grown SiC nanowires on carbon fibers","authors":"Binbin Li, Shenghui Qian, Cong Sun, Min Wang, X. Zhan","doi":"10.1080/09276440.2023.2179250","DOIUrl":"https://doi.org/10.1080/09276440.2023.2179250","url":null,"abstract":"ABSTRACT Carbon fiber-reinforced resin matrix composites have been utilized as structural and bearing parts in aerospace because of their high specific strength and modulus. To improve the mechanical properties and wear resistance of carbon fiber-reinforced epoxy resin composites, we propose the in-situ growth of SiC nanowires on the surface of carbon fiber by a Chemical Vapor Deposition method. The effect of the addition of nanowires on the mechanical strength and wear resistance of carbon fiber-reinforced epoxy resin composites was investigated. The results indicated that the tensile strength and bending strength of SiCnws / C f / epoxy resin composites increased by 13.8% and 16.2% on the condition that the concentration of Ni(NO3)2 catalyst was 0.1 mol/L, respectively. The improvement of the mechanical properties could be attributed to the mechanical interlocking affection between carbon fiber and SiC nanowires. In addition, due to SiC nanowires with a three-dimensional network structure on the surface of carbon fiber, the stronger adhesive force between epoxy matrix SiC nanowires protected the resin matrix and carbon fiber from abrasion. The wear rate of SiCnws / C f / epoxy composites was reduced by 98.1%. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"52 1","pages":"923 - 939"},"PeriodicalIF":2.6,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91154286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-04DOI: 10.1080/09276440.2022.2096803
Taegyun Kwon, E. Lee, Jung Won Lee
ABSTRACT The interaction between the dielectric BaTiO3/poly(vinyl butyral) composite layer (BT@PVB sheet) and the metallic Ni/ethyl cellulose composite layer (Ni@EC sheet) in developing MLCC has been considered an inevitable factor. In this paper, we devised Ni/polymer composite solution (Ni@EC paste) with new concept, which does not damage the dielectric composite layer underneath due to its lack of interaction with the BT@PVB sheet, and introduced emulsified-state suspension as a systematic template. Emulsified Ni@EC paste consists largely of hydrophobic phases, water phases, and PVB surfactants. The components that make up the hydrophobic phase were Ni nanoparticles, EC binders, and organic solvents. Within the emulsified paste (Ni@EC/water), the hydrophobic phase formed the structure of droplets surrounded by surrounding water, resulting in only the water phase being exposed to the outside. During the coating process, the water phase in Ni@EC/water emulsion paste came into contact with the as-prepared BT@PVB sheet, and the hydrophobic phase could not affect the sheet due to the blocking effect of the surrounding water phase. Afterwards, organic solvents as well as water were co-evaporated through the drying process, and most of the organic solvents were removed and solidified before molecular diffusion into BT@PVB sheet occurred. Graphical abstract
{"title":"Emulsified Ni paste for damage-free coating on BaTiO3/polymer dielectric composite layer in MLCCs","authors":"Taegyun Kwon, E. Lee, Jung Won Lee","doi":"10.1080/09276440.2022.2096803","DOIUrl":"https://doi.org/10.1080/09276440.2022.2096803","url":null,"abstract":"ABSTRACT The interaction between the dielectric BaTiO3/poly(vinyl butyral) composite layer (BT@PVB sheet) and the metallic Ni/ethyl cellulose composite layer (Ni@EC sheet) in developing MLCC has been considered an inevitable factor. In this paper, we devised Ni/polymer composite solution (Ni@EC paste) with new concept, which does not damage the dielectric composite layer underneath due to its lack of interaction with the BT@PVB sheet, and introduced emulsified-state suspension as a systematic template. Emulsified Ni@EC paste consists largely of hydrophobic phases, water phases, and PVB surfactants. The components that make up the hydrophobic phase were Ni nanoparticles, EC binders, and organic solvents. Within the emulsified paste (Ni@EC/water), the hydrophobic phase formed the structure of droplets surrounded by surrounding water, resulting in only the water phase being exposed to the outside. During the coating process, the water phase in Ni@EC/water emulsion paste came into contact with the as-prepared BT@PVB sheet, and the hydrophobic phase could not affect the sheet due to the blocking effect of the surrounding water phase. Afterwards, organic solvents as well as water were co-evaporated through the drying process, and most of the organic solvents were removed and solidified before molecular diffusion into BT@PVB sheet occurred. Graphical abstract","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"15 1","pages":"271 - 281"},"PeriodicalIF":2.6,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78297813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1080/09276440.2023.2179267
Yong Feng, Weijian Wang, Siqi Wang, Zijuan Niu, Lijuan Li
ABSTRACT Amphiphilic Silane coupling agent (SCA) improves the weak bond between the two phases of rubber and hydration products, fills the interfacial gaps and effectively repairs the interfacial defects between rubber and hydration products. The addition of PVA fibers mainly improves the cracking performance and durability of concrete. However, most of the studies addressing this issue have been limited to phenomenology, ignoring the mechanism of action at the atomic structure level. Therefore, this study investigates the strengthening mechanism of the interfacial properties of KH-560 coupling agent-reinforced PVA fiber-rubber concrete from the multi-scale analysis of macro-mechanical properties, micro and fine structure, chemical composition and nano-optical level. Based on the results of macro-mechanical tests, it was found that the KH-560 coupling agent could improve the compressive, flexural and shear strength of PVA-rubber concrete, so that the damage morphology also changed from brittle damage to plastic damage, and the compressive strength of concrete was slightly reduced due to the addition of PVA, but the durability and cracking resistance were enhanced. XRD (X-ray diffraction), FT-IR (Fourier transform infrared spectroscopy) and SEM (scanning electron microscopy) tests observed the presence of some gels and polymers that filled the interfacial slits and effectively repaired the interfacial defects. The two-phase interface was simulated by molecular dynamics at the nano level, and it was found that KH560 molecules could be closely connected with C-S-H gel collectively through Si-O-Si chemical bonding, and KH560 molecular bonds were unevenly distributed between the C-S-H and rubber interfaces, while the addition of modifier KH560 and PVA fibers caused more hydrogen and ionic bonds at the interface, which enhanced the interfacial interaction energy. Systematic experiments were conducted on PVA fiber-rubber soil materials before and after SCA modification under macroscopic, microscopic, fine and nano-level multi-scale analyses, which ultimately lead to the design and performance improvement of SCA modification of PVA-rubber cement-based materials in a multi-scale framework. The graphic summary is shown in Figure 1. GRAPHICAL ABSTRACT
{"title":"Multi-scale analysis of mechanical properties of KH-560 coupling agent modified PVA fiber-rubber concrete","authors":"Yong Feng, Weijian Wang, Siqi Wang, Zijuan Niu, Lijuan Li","doi":"10.1080/09276440.2023.2179267","DOIUrl":"https://doi.org/10.1080/09276440.2023.2179267","url":null,"abstract":"ABSTRACT Amphiphilic Silane coupling agent (SCA) improves the weak bond between the two phases of rubber and hydration products, fills the interfacial gaps and effectively repairs the interfacial defects between rubber and hydration products. The addition of PVA fibers mainly improves the cracking performance and durability of concrete. However, most of the studies addressing this issue have been limited to phenomenology, ignoring the mechanism of action at the atomic structure level. Therefore, this study investigates the strengthening mechanism of the interfacial properties of KH-560 coupling agent-reinforced PVA fiber-rubber concrete from the multi-scale analysis of macro-mechanical properties, micro and fine structure, chemical composition and nano-optical level. Based on the results of macro-mechanical tests, it was found that the KH-560 coupling agent could improve the compressive, flexural and shear strength of PVA-rubber concrete, so that the damage morphology also changed from brittle damage to plastic damage, and the compressive strength of concrete was slightly reduced due to the addition of PVA, but the durability and cracking resistance were enhanced. XRD (X-ray diffraction), FT-IR (Fourier transform infrared spectroscopy) and SEM (scanning electron microscopy) tests observed the presence of some gels and polymers that filled the interfacial slits and effectively repaired the interfacial defects. The two-phase interface was simulated by molecular dynamics at the nano level, and it was found that KH560 molecules could be closely connected with C-S-H gel collectively through Si-O-Si chemical bonding, and KH560 molecular bonds were unevenly distributed between the C-S-H and rubber interfaces, while the addition of modifier KH560 and PVA fibers caused more hydrogen and ionic bonds at the interface, which enhanced the interfacial interaction energy. Systematic experiments were conducted on PVA fiber-rubber soil materials before and after SCA modification under macroscopic, microscopic, fine and nano-level multi-scale analyses, which ultimately lead to the design and performance improvement of SCA modification of PVA-rubber cement-based materials in a multi-scale framework. The graphic summary is shown in Figure 1. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"91 1","pages":"983 - 1010"},"PeriodicalIF":2.6,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76530791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-25DOI: 10.1080/09276440.2023.2182464
Yoo-Choon Park, E. Lee, Choong-hyun Lee, Tae-Gyun Kwon, D. Lim
ABSTRACT Carbon atom recombination and etching of the surface of nanodiamond (ND) by hydrogen plasma and their effects on the dispersion and the tribological properties of a polytetrafluoroethylene (PTFE) nanocomposite coating were investigated. The surface-modified ND samples subjected to plasma treatment were characterized using FESEM, HRTEM, Raman spectroscopy, FT-IR spectroscopy and XPS. The results showed that the plasma treatment facilitates etching and recombination of the ND surface and modifies the crystallinity of the graphitic amorphous carbon. The tribological properties of the PTFE-based nanocomposite coatings prepared with the modified ND depended on the content of sp 3 -bonded carbon on the surface and the crystallinity of the ND. Hydrogen plasma treatment caused a significant improvement in the dispersion and tribological properties of the PTFE/ND nanocomposite coating due to surface modification of the ND. GRAPHICAL ABSTRACT
{"title":"Effect of hydrogen plasma treatment of nanodiamond on the tribological properties of polytetrafluoroethylene-based nanocomposite coating","authors":"Yoo-Choon Park, E. Lee, Choong-hyun Lee, Tae-Gyun Kwon, D. Lim","doi":"10.1080/09276440.2023.2182464","DOIUrl":"https://doi.org/10.1080/09276440.2023.2182464","url":null,"abstract":"ABSTRACT Carbon atom recombination and etching of the surface of nanodiamond (ND) by hydrogen plasma and their effects on the dispersion and the tribological properties of a polytetrafluoroethylene (PTFE) nanocomposite coating were investigated. The surface-modified ND samples subjected to plasma treatment were characterized using FESEM, HRTEM, Raman spectroscopy, FT-IR spectroscopy and XPS. The results showed that the plasma treatment facilitates etching and recombination of the ND surface and modifies the crystallinity of the graphitic amorphous carbon. The tribological properties of the PTFE-based nanocomposite coatings prepared with the modified ND depended on the content of sp 3 -bonded carbon on the surface and the crystallinity of the ND. Hydrogen plasma treatment caused a significant improvement in the dispersion and tribological properties of the PTFE/ND nanocomposite coating due to surface modification of the ND. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"20 1","pages":"1063 - 1074"},"PeriodicalIF":2.6,"publicationDate":"2023-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82663801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-25DOI: 10.1080/09276440.2023.2179246
Y. Tong, Min Feng, Chan Yang, Wenjuan Wu, T. Hu, Qingyun Wang
ABSTRACT To improve the performance of traditional oil absorption materials, a novel concept is proposed for the fabrication of composite oil absorption materials with three-dimensional porous structure via a double Pickering emulsion template. Oil‐in‐water‐in‐oil type double Pickering emulsion is prepared with modified attapulgite (ATP) and modified Fe3O4. Then, the Pickering emulsion as a template is synthesized ATP/P(EHMA-St)/Fe3O4 composite porous materials. The influences of the amount of inorganic additives-modified ATP, initiator, cross-linking agent, and oil–water ratio on the oil absorption rate and oil retention rate of the material were studied. It showed that under the conditions of polymerization temperature of 80°C and reaction time of 6 h, the morphology of the material was the best and the oil absorption rate was the largest with the content of modified ATP, nano Fe3O4, DVB, and BPO of 0.20%, 0.10%, 1.20%, and 0.32%, respectively, and the oil–water ratio of 1:5. The absorption of diesel oil can reach 986.65%, and the oil retention rate of material can reach 82.37%. Our work provides a novel strategy for the preparation of composite porous materials, which is expected to be popularized and applied in oil spill treatment and oily wastewater treatment. GRAPHICAL ABSTRACT
{"title":"Double Pickering emulsion as a template to synthesize composite oil absorption materials with three-dimensional porous structure","authors":"Y. Tong, Min Feng, Chan Yang, Wenjuan Wu, T. Hu, Qingyun Wang","doi":"10.1080/09276440.2023.2179246","DOIUrl":"https://doi.org/10.1080/09276440.2023.2179246","url":null,"abstract":"ABSTRACT To improve the performance of traditional oil absorption materials, a novel concept is proposed for the fabrication of composite oil absorption materials with three-dimensional porous structure via a double Pickering emulsion template. Oil‐in‐water‐in‐oil type double Pickering emulsion is prepared with modified attapulgite (ATP) and modified Fe3O4. Then, the Pickering emulsion as a template is synthesized ATP/P(EHMA-St)/Fe3O4 composite porous materials. The influences of the amount of inorganic additives-modified ATP, initiator, cross-linking agent, and oil–water ratio on the oil absorption rate and oil retention rate of the material were studied. It showed that under the conditions of polymerization temperature of 80°C and reaction time of 6 h, the morphology of the material was the best and the oil absorption rate was the largest with the content of modified ATP, nano Fe3O4, DVB, and BPO of 0.20%, 0.10%, 1.20%, and 0.32%, respectively, and the oil–water ratio of 1:5. The absorption of diesel oil can reach 986.65%, and the oil retention rate of material can reach 82.37%. Our work provides a novel strategy for the preparation of composite porous materials, which is expected to be popularized and applied in oil spill treatment and oily wastewater treatment. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"140 1","pages":"909 - 922"},"PeriodicalIF":2.6,"publicationDate":"2023-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77671547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-23DOI: 10.1080/09276440.2023.2180842
T. Sohail, R. Sweat, Hongbing Lu, R. Baughman, Samit Roy
ABSTRACT This paper aims to develop a novel approach to determining the fiber/matrix interfacial shear strength (IFSS) due to both carbon fiber roughness and the presence of carbon nanotubes (CNTs) in the matrix of a polymer composite in the form of a fiber overwrap. Under an atomic force microscope (AFM), the carbon fiber surface exhibits multi-scale asperities extending from a nanometer to several microns, likely caused by shrinkage during the graphitization process. Therefore, a Fourier series decomposition of the surface asperity data is performed to model these asperities present at various wavelengths on the fiber resulting in an amplitude and wavelength corresponding to each Fourier series term, effectively capturing the surface roughness over the entire spectrum of wavelengths. Furthermore, Molecular Dynamics (MD) simulations were performed to determine the interfacial shear strength of any subcomponent asperity of a specific amplitude and wavelength. Using MD data, governing equations were developed to compute the length-scale-averaged shear strength for a carbon fiber with any given surface asperities from the interfacial shear force for each of these subcomponent wavelengths. The results show that the presence of CNTs enhanced the IFSS by about 19% overall for a given surface asperity profile compared with the case without CNTs. GRAPHICAL_ABSTRACT
{"title":"Prediction of interfacial shear strength of CNT overwrapped carbon fibers using molecular dynamics and Fourier series decomposition of surface asperities","authors":"T. Sohail, R. Sweat, Hongbing Lu, R. Baughman, Samit Roy","doi":"10.1080/09276440.2023.2180842","DOIUrl":"https://doi.org/10.1080/09276440.2023.2180842","url":null,"abstract":"ABSTRACT This paper aims to develop a novel approach to determining the fiber/matrix interfacial shear strength (IFSS) due to both carbon fiber roughness and the presence of carbon nanotubes (CNTs) in the matrix of a polymer composite in the form of a fiber overwrap. Under an atomic force microscope (AFM), the carbon fiber surface exhibits multi-scale asperities extending from a nanometer to several microns, likely caused by shrinkage during the graphitization process. Therefore, a Fourier series decomposition of the surface asperity data is performed to model these asperities present at various wavelengths on the fiber resulting in an amplitude and wavelength corresponding to each Fourier series term, effectively capturing the surface roughness over the entire spectrum of wavelengths. Furthermore, Molecular Dynamics (MD) simulations were performed to determine the interfacial shear strength of any subcomponent asperity of a specific amplitude and wavelength. Using MD data, governing equations were developed to compute the length-scale-averaged shear strength for a carbon fiber with any given surface asperities from the interfacial shear force for each of these subcomponent wavelengths. The results show that the presence of CNTs enhanced the IFSS by about 19% overall for a given surface asperity profile compared with the case without CNTs. GRAPHICAL_ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"114 1","pages":"1011 - 1034"},"PeriodicalIF":2.6,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79237482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-22DOI: 10.1080/09276440.2023.2179240
He-xin Zhang, Hyun-Min Ryu, Keun-byoung Yoon
ABSTRACT MXene is a new type of transition metal carbon/nitride two-dimensional nanolayered material, which has attracted extensive attention in many fields due to its unique physicochemical properties. Combining MXene with high-performance polymers is expected to obtain nanocomposites with excellent comprehensive properties. In this study, MXene was first modified with acidified 6-aminocaproic acid and then mixed with Polyamide 6 (PA6) matrix. The structure, thermal stability, mechanical properties, and electromagnetic interference shielding efficiency of MXene-based PA6 nanocomposites were studied. The modified MXene was well dispersed in the PA6 matrix with beneficial interfacial adhesion, and the mechanical properties and electromagnetic interference shielding efficiency were significantly enhanced. The method used in this study provides a novel route for fabricating MXene-based polymer nanocomposites with excellent performance. GRAPHICAL ABSTRACT
{"title":"Fabrication and properties of the 6-aminocaproic acid-modified MXene-based PA6 nanocomposites","authors":"He-xin Zhang, Hyun-Min Ryu, Keun-byoung Yoon","doi":"10.1080/09276440.2023.2179240","DOIUrl":"https://doi.org/10.1080/09276440.2023.2179240","url":null,"abstract":"ABSTRACT MXene is a new type of transition metal carbon/nitride two-dimensional nanolayered material, which has attracted extensive attention in many fields due to its unique physicochemical properties. Combining MXene with high-performance polymers is expected to obtain nanocomposites with excellent comprehensive properties. In this study, MXene was first modified with acidified 6-aminocaproic acid and then mixed with Polyamide 6 (PA6) matrix. The structure, thermal stability, mechanical properties, and electromagnetic interference shielding efficiency of MXene-based PA6 nanocomposites were studied. The modified MXene was well dispersed in the PA6 matrix with beneficial interfacial adhesion, and the mechanical properties and electromagnetic interference shielding efficiency were significantly enhanced. The method used in this study provides a novel route for fabricating MXene-based polymer nanocomposites with excellent performance. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"86 1","pages":"529 - 541"},"PeriodicalIF":2.6,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80676154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-22DOI: 10.1080/09276440.2023.2179237
M. Saber, H. Hosseini-Toudeshky
ABSTRACT In this paper, a novel procedure is developed to characterize the interphase region using the nonlocal peridynamic method and micro tensile tests of glass/epoxy specimens with a single fiber of glass. For this purpose, micro tensile tests are performed by an accurate tensile test device and high-quality camera imaging for data sampling. The obtained displacements are analysed by the image processing method and used as target values in the peridynamic analyses. Multiscale mass points from macro to micro scale are generated to model the interphase region in single fiber specimens using the state-based peridynamic method. With the coupling of peridynamic and multivariate optimization codes, the program is automatically executed by the prediction of thickness and elastic modulus of interphase to achieve the desired displacements similar to micro tensile test results. In this innovative method, unlike nanoindentation tests, where the results are limited to a specific section or point, the interphase characterization gives an overall elastic modulus value along the examined length of the sample. The obtained results from the presented procedure show that the interphase elastic modulus is between 20.8 and 28.86 GPa and the interphase thickness is between 1.149 and 1.986 microns. The obtained results are in the range of nanoindentation tests results presented in the literature, and the difference could be due to the manufacturing conditions, epoxy properties, and quality of the fiber silane coatings. GRAPHICAL ABSTRACT
{"title":"Interphase characterization of glass/epoxy composite using peridynamic method and micro tensile test","authors":"M. Saber, H. Hosseini-Toudeshky","doi":"10.1080/09276440.2023.2179237","DOIUrl":"https://doi.org/10.1080/09276440.2023.2179237","url":null,"abstract":"ABSTRACT In this paper, a novel procedure is developed to characterize the interphase region using the nonlocal peridynamic method and micro tensile tests of glass/epoxy specimens with a single fiber of glass. For this purpose, micro tensile tests are performed by an accurate tensile test device and high-quality camera imaging for data sampling. The obtained displacements are analysed by the image processing method and used as target values in the peridynamic analyses. Multiscale mass points from macro to micro scale are generated to model the interphase region in single fiber specimens using the state-based peridynamic method. With the coupling of peridynamic and multivariate optimization codes, the program is automatically executed by the prediction of thickness and elastic modulus of interphase to achieve the desired displacements similar to micro tensile test results. In this innovative method, unlike nanoindentation tests, where the results are limited to a specific section or point, the interphase characterization gives an overall elastic modulus value along the examined length of the sample. The obtained results from the presented procedure show that the interphase elastic modulus is between 20.8 and 28.86 GPa and the interphase thickness is between 1.149 and 1.986 microns. The obtained results are in the range of nanoindentation tests results presented in the literature, and the difference could be due to the manufacturing conditions, epoxy properties, and quality of the fiber silane coatings. GRAPHICAL ABSTRACT","PeriodicalId":10653,"journal":{"name":"Composite Interfaces","volume":"44 1","pages":"827 - 848"},"PeriodicalIF":2.6,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81351341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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