Pub Date : 2024-10-12DOI: 10.1016/j.coco.2024.102123
Despite epoxy composites being used in a wide range of applications, it remains a great challenge to solve the defect of high brittleness and poor wear resistance for real engineering applications. Nanomaterials enhance fracture toughness and provide superior antifriction and wear resistance for epoxy matrix materials. In this work, a late-model ANFs/MXene/UiO-66-NH2 hybrid aerogel (AMU) with 3D layered and “mortar-brick” multi-hole structure was devised via solution impregnation and hydrothermal in situ growth processes. MXene and UiO-66-NH2 were uniformly anchored to the surface of the ANFs aerogel backbone due to hydrogen bonding forces and electrostatic adsorption. The acquired AMU-EP composites exhibited excellent thermal conductivity owing to an efficient three-dimensional network of thermal conductive pathways inside the epoxy matrix. Moreover, the efficient synergistic effect of AMU components formed a high-quality transfer film on the surface of steel balls during the friction process, which was important for enhancing the tribological properties of AMU-EP.
{"title":"An ultra-low density and mechanically robust ANFs/MXene/UiO-66-NH2 aerogel for enhancing thermal conductivity and tribological properties of epoxy resins","authors":"","doi":"10.1016/j.coco.2024.102123","DOIUrl":"10.1016/j.coco.2024.102123","url":null,"abstract":"<div><div>Despite epoxy composites being used in a wide range of applications, it remains a great challenge to solve the defect of high brittleness and poor wear resistance for real engineering applications. Nanomaterials enhance fracture toughness and provide superior antifriction and wear resistance for epoxy matrix materials. In this work, a late-model ANFs/MXene/UiO-66-NH<sub>2</sub> hybrid aerogel (AMU) with 3D layered and “mortar-brick” multi-hole structure was devised via solution impregnation and hydrothermal in situ growth processes. MXene and UiO-66-NH<sub>2</sub> were uniformly anchored to the surface of the ANFs aerogel backbone due to hydrogen bonding forces and electrostatic adsorption. The acquired AMU-EP composites exhibited excellent thermal conductivity owing to an efficient three-dimensional network of thermal conductive pathways inside the epoxy matrix. Moreover, the efficient synergistic effect of AMU components formed a high-quality transfer film on the surface of steel balls during the friction process, which was important for enhancing the tribological properties of AMU-EP.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-10DOI: 10.1016/j.coco.2024.102121
High temperature resistant polymer-based composite with high thermal conductivity and great mechanical properties are highly demanded in the field of electronic devices for simultaneously meeting surface mounting process and high-power operation. The key to achieving this goal is to balance the contradiction between the high melt viscosity of high-temperature resistant polymers and the dispersibility of fillers. In this work, the high-performance polyamide 6T/66/hexagonal boron nitride (PA6T/66/BN) composites were fabricated successfully via the method combining prepolymerization and reactive extrusion. Results demonstrated that this method not only significantly improves the preparation efficiency of high temperature resistant polyamide and its composites, but also enables the prepared composites to reach 3.6 W/(m⋅K), over 299 °C and 67.8 MPa in thermal conductivity, melting point and tensile strength respectively. Furthermore, the prepared composite exhibits excellent thermal management effects on LED and CPU. Therefore, the results of this work are of great significance for the efficient preparation and wide application of high-temperature resistant polymer based thermally conductive composites.
电子设备领域对同时满足表面贴装工艺和大功率运行的高导热性和高机械性能的耐高温聚合物基复合材料有很高的要求。实现这一目标的关键在于平衡耐高温聚合物的高熔融粘度与填料分散性之间的矛盾。在这项工作中，通过预聚合和反应挤压相结合的方法，成功制造出了高性能聚酰胺 6T/66/六方氮化硼（PA6T/66/BN）复合材料。结果表明，该方法不仅显著提高了耐高温聚酰胺及其复合材料的制备效率，而且使制备的复合材料的热导率、熔点和拉伸强度分别达到 3.6 W/(m-K)、299 ℃ 以上和 67.8 MPa。此外，所制备的复合材料对 LED 和 CPU 具有出色的热管理效果。因此，该研究成果对于高效制备和广泛应用基于耐高温聚合物的导热复合材料具有重要意义。
{"title":"Reactive extrusion for efficient preparation of high temperature resistant PA6T/66/BN composites with great thermal management and mechanical properties","authors":"","doi":"10.1016/j.coco.2024.102121","DOIUrl":"10.1016/j.coco.2024.102121","url":null,"abstract":"<div><div>High temperature resistant polymer-based composite with high thermal conductivity and great mechanical properties are highly demanded in the field of electronic devices for simultaneously meeting surface mounting process and high-power operation. The key to achieving this goal is to balance the contradiction between the high melt viscosity of high-temperature resistant polymers and the dispersibility of fillers. In this work, the high-performance polyamide 6T/66/hexagonal boron nitride (PA6T/66/BN) composites were fabricated successfully via the method combining prepolymerization and reactive extrusion. Results demonstrated that this method not only significantly improves the preparation efficiency of high temperature resistant polyamide and its composites, but also enables the prepared composites to reach 3.6 W/(m⋅K), over 299 °C and 67.8 MPa in thermal conductivity, melting point and tensile strength respectively. Furthermore, the prepared composite exhibits excellent thermal management effects on LED and CPU. Therefore, the results of this work are of great significance for the efficient preparation and wide application of high-temperature resistant polymer based thermally conductive composites.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-10DOI: 10.1016/j.coco.2024.102120
Multi-material composite can effectively realize the lightweight, broadband and strong absorption requirements of microwave-absorbing materials. In this paper, hollow porous rGO-FeCoNiCrMn/EC/EP composite microwave-absorbing microspheres were prepared by the microemulsion method. EC and EP refer to ethyl cellulose and epoxy resin, respectively, which are mainly used as wall skeleton and core material in the formation of composite microspheres.The rGO-FeCoNiCrMn/EC/EP composite microspheres have abundant hollow porous structures, which provide good impedance-matching properties for the microwave-absorbing materials, and are favorable for enhancing the multiple reflection and scattering of microwaves. The multi-material composite constructs abundant dielectric/magnetic heterogeneous interfaces, which is conducive to increasing the microwave-absorbing properties of the materials. The excellent microwave-absorbing properties of composites stem from the fact that the materials possess a wealth of EM loss mechanisms, such as dipole polarization, interfacial polarization, conductive loss, natural resonance, exchange resonance, and eddy current loss. The effective absorption bandwidth of the composite microspheres reached 5.2 GHz (10.4∼15.6 GHz) at 2.5 mm thickness when the rGO content was 2.8 wt%. The composite microspheres with rGO content of 5.4 wt% and thickness of 2.5 mm achieve a minimum reflection loss of -50.46 dB at 10.08 GHz, and an effective absorption bandwidth of 3.6 GHz (11.2∼14.8 GHz) at a thickness of 1.5 mm. Variations in material thickness in the range of 1∼5 mm allow effective absorption of electromagnetic(EM) microwaves in the 4∼18 GHz band, i.e. almost the entire C, X and Ku bands. Finally, the rGO-FeCoNiCrMn/EC/EP composite microspheres were tested by RCS simulation. The simulation results show that the rGO-FeCoNiCrMn/EC/EP composite microspheres have the wide-angle absorption characteristics of EM microwave. The composites with rGO content of 5.4 wt% can realize the RCS below -10 dBm2 over the whole range when the incidence angle of EM microwaves varies in the range of -90° < θ < 90°, and the composites with rGO content of 6.7 wt% and 7.9 wt% can realize the RCS below -10 dBm2 in the range of 95.5% of the incidence angle. In this paper, the preparation and microwave-absorbing mechanism of rGO-FeCoNiCrMn/EC/EP composites is investigated, which provides a new solution for the preparation of highly efficient broadband EM microwave-absorbing materials with a wide range of application prospects.
{"title":"Microwave absorption characterization of hollow and porous rGO-FeCoNiCrMn/EC/EP composite microsphere materials","authors":"","doi":"10.1016/j.coco.2024.102120","DOIUrl":"10.1016/j.coco.2024.102120","url":null,"abstract":"<div><div>Multi-material composite can effectively realize the lightweight, broadband and strong absorption requirements of microwave-absorbing materials. In this paper, hollow porous rGO-FeCoNiCrMn/EC/EP composite microwave-absorbing microspheres were prepared by the microemulsion method. EC and EP refer to ethyl cellulose and epoxy resin, respectively, which are mainly used as wall skeleton and core material in the formation of composite microspheres.The rGO-FeCoNiCrMn/EC/EP composite microspheres have abundant hollow porous structures, which provide good impedance-matching properties for the microwave-absorbing materials, and are favorable for enhancing the multiple reflection and scattering of microwaves. The multi-material composite constructs abundant dielectric/magnetic heterogeneous interfaces, which is conducive to increasing the microwave-absorbing properties of the materials. The excellent microwave-absorbing properties of composites stem from the fact that the materials possess a wealth of EM loss mechanisms, such as dipole polarization, interfacial polarization, conductive loss, natural resonance, exchange resonance, and eddy current loss. The effective absorption bandwidth of the composite microspheres reached 5.2 GHz (10.4∼15.6 GHz) at 2.5 mm thickness when the rGO content was 2.8 wt%. The composite microspheres with rGO content of 5.4 wt% and thickness of 2.5 mm achieve a minimum reflection loss of -50.46 dB at 10.08 GHz, and an effective absorption bandwidth of 3.6 GHz (11.2∼14.8 GHz) at a thickness of 1.5 mm. Variations in material thickness in the range of 1∼5 mm allow effective absorption of electromagnetic(EM) microwaves in the 4∼18 GHz band, i.e. almost the entire C, X and Ku bands. Finally, the rGO-FeCoNiCrMn/EC/EP composite microspheres were tested by RCS simulation. The simulation results show that the rGO-FeCoNiCrMn/EC/EP composite microspheres have the wide-angle absorption characteristics of EM microwave. The composites with rGO content of 5.4 wt% can realize the RCS below -10 dBm<sup>2</sup> over the whole range when the incidence angle of EM microwaves varies in the range of -90° < θ < 90°, and the composites with rGO content of 6.7 wt% and 7.9 wt% can realize the RCS below -10 dBm<sup>2</sup> in the range of 95.5% of the incidence angle. In this paper, the preparation and microwave-absorbing mechanism of rGO-FeCoNiCrMn/EC/EP composites is investigated, which provides a new solution for the preparation of highly efficient broadband EM microwave-absorbing materials with a wide range of application prospects.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-10DOI: 10.1016/j.coco.2024.102115
The Al-Mg-B₂O₃ composites were synthesized via a combination of ball-milling, sintering, and hot extrusion, with in-situ formed MgAl₂O₄ and MgAlB₄ particles distributing along grain boundaries. The Al-5Mg-10B₂O₃ composite demonstrated exceptional mechanical properties, including a yield strength of 535 MPa, ultimate tensile strength of 558 MPa, Young's modulus of 88.8 GPa, and a density of 2.84 g/cm3. The strengthening mechanisms were analyzed, with dislocation strengthening contributing most, primarily due to the formation of MgAl₂O₄ nanoparticles.
{"title":"In-situ fabrication of a strong and stiff MgAl2O4/Al-based composite","authors":"","doi":"10.1016/j.coco.2024.102115","DOIUrl":"10.1016/j.coco.2024.102115","url":null,"abstract":"<div><div>The Al-Mg-B₂O₃ composites were synthesized via a combination of ball-milling, sintering, and hot extrusion, with in-situ formed MgAl₂O₄ and MgAlB₄ particles distributing along grain boundaries. The Al-5Mg-10B₂O₃ composite demonstrated exceptional mechanical properties, including a yield strength of 535 MPa, ultimate tensile strength of 558 MPa, Young's modulus of 88.8 GPa, and a density of 2.84 g/cm<sup>3</sup>. The strengthening mechanisms were analyzed, with dislocation strengthening contributing most, primarily due to the formation of MgAl₂O₄ nanoparticles.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-09DOI: 10.1016/j.coco.2024.102119
The ZrO2-Al2O3 exhibits distinct behavior compared to monolithic ceramics when exposed to stress. The compelling quality of this trait makes it well-suited for any demanding supporting application that necessitates resilience. However, under a thermal process, it might cause functional concerns such as cracking patterns, which pose a threat to the endurance of orthopedic implants. This issue has lately attracted medical scrutiny. Being a thermal process, fiber laser treatment of ZrO2-Al2O3 is more complex than monolithic ceramic because of its unique thermal characteristics and varied rates of absorption, which rely on the matrix and the reinforcement material. This research aims to scrutinize the divergent characteristics of ZrO2-Al2O3 in terms of crack behavior while treating it with the same laser fluence under auxiliary environments. It has been found that ZrO2-Al2O3 prone to form cracks when processed under high-temperature environments due to the development of stress during phase transformation because of prolonged exposure, as evidenced by the surface characterization results. Meanwhile, when it was processed at low-temperature environments like water and ice, the detrimental effect of laser fluence factor appeared to be meager by reducing the likelihood of phase transformation and crack quantity. With this, the research demonstrates a promising approach that effectively maintains the overall structural integrity of ZrO2-Al2O3 by impeding the progression of the cracks along with a smooth, flawless surface during laser processing.
{"title":"Effect of machining environments on the crack behavior of ZrO2-Al2O3 composite during short-pulsed laser processing","authors":"","doi":"10.1016/j.coco.2024.102119","DOIUrl":"10.1016/j.coco.2024.102119","url":null,"abstract":"<div><div>The ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> exhibits distinct behavior compared to monolithic ceramics when exposed to stress. The compelling quality of this trait makes it well-suited for any demanding supporting application that necessitates resilience. However, under a thermal process, it might cause functional concerns such as cracking patterns, which pose a threat to the endurance of orthopedic implants. This issue has lately attracted medical scrutiny. Being a thermal process, fiber laser treatment of ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> is more complex than monolithic ceramic because of its unique thermal characteristics and varied rates of absorption, which rely on the matrix and the reinforcement material. This research aims to scrutinize the divergent characteristics of ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> in terms of crack behavior while treating it with the same laser fluence under auxiliary environments. It has been found that ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> prone to form cracks when processed under high-temperature environments due to the development of stress during phase transformation because of prolonged exposure, as evidenced by the surface characterization results. Meanwhile, when it was processed at low-temperature environments like water and ice, the detrimental effect of laser fluence factor appeared to be meager by reducing the likelihood of phase transformation and crack quantity. With this, the research demonstrates a promising approach that effectively maintains the overall structural integrity of ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> by impeding the progression of the cracks along with a smooth, flawless surface during laser processing.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-08DOI: 10.1016/j.coco.2024.102114
Efficient tack between ply and tooling is crucial for achieving accurate, defect-free and reliable placement of prepreg in Automated Fibre Placement (AFP). However, current industry practices for choosing AFP tooling's material almost never account for this. The present contribution makes the scientific case for a more careful accounting of tack in the choice of AFP tooling material. Employing a modified probe test method, tack between prepreg, specifically Hexcel IM7-8552, and various tool surfaces was characterised. The effect of the roughness and material types on tack and its further influence on AFP deposition was investigated. The study shows that different materials have varying traction-separation behaviour, with metals showing higher values than composite materials. Release agent-treated samples exhibited the lowest tack, making them unsuitable for directly used in AFP. It is concluded that, by better considering tack, engineers can tailor their tooling material to enhance the quality and reliability of the deposition process.
{"title":"On the need to better control tooling in prepreg Automated Fibre Placement (AFP) deposition","authors":"","doi":"10.1016/j.coco.2024.102114","DOIUrl":"10.1016/j.coco.2024.102114","url":null,"abstract":"<div><div>Efficient tack between ply and tooling is crucial for achieving accurate, defect-free and reliable placement of prepreg in Automated Fibre Placement (AFP). However, current industry practices for choosing AFP tooling's material almost never account for this. The present contribution makes the scientific case for a more careful accounting of tack in the choice of AFP tooling material. Employing a modified probe test method, tack between prepreg, specifically Hexcel IM7-8552, and various tool surfaces was characterised. The effect of the roughness and material types on tack and its further influence on AFP deposition was investigated. The study shows that different materials have varying traction-separation behaviour, with metals showing higher values than composite materials. Release agent-treated samples exhibited the lowest tack, making them unsuitable for directly used in AFP. It is concluded that, by better considering tack, engineers can tailor their tooling material to enhance the quality and reliability of the deposition process.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-05DOI: 10.1016/j.coco.2024.102112
Anion-exchange chromatography (AEC) is recognized as a highly effective approach for the purification of immunoglobulin G (IgG). This study introduces an innovative strategy that employs waste cellulose filter paper in the production of AEC media. A quaternized cellulose fiber membrane (CFM-QCS) was successfully fabricated that cellulose fibers were as a structural framework, glutaraldehyde (GA) as a crosslinking agent, and quaternary chitosan (QCS) as a modifying agent. Morphological and chemical characterization revealed that GA and QCS were uniformly crosslinked on the surface of the cellulose fibers, resulting in excellent mechanical properties in both dry and wet states. Benefiting from its 3D network scaffold structure, CFM-QCS demonstrated a high adsorption capacity for bovine serum albumin (BSA), with static and dynamic adsorption capacities of 605.15 mg/g and 88.63 mg/ml, respectively. After treated with extreme conditions and 10 cyclic adsorption and elution, the adsorption capacity of CFM-QCS remains almost unchanged, highlighting its excellent stability. Additionally, a CFM-QCS packed chromatography column exhibited high flux of 10.38 L/h at 0.1 MPa, which can efficiently separate IgG from a mixed solution in the presence of BSA and IgG by gravity-driven. This work presents a straightforward approach for preparing high-performance ion-exchange chromatography membranes for IgG separation.
{"title":"A readily accessible quaternized cellulose filter paper with high permeability for IgG separation","authors":"","doi":"10.1016/j.coco.2024.102112","DOIUrl":"10.1016/j.coco.2024.102112","url":null,"abstract":"<div><div>Anion-exchange chromatography (AEC) is recognized as a highly effective approach for the purification of immunoglobulin G (IgG). This study introduces an innovative strategy that employs waste cellulose filter paper in the production of AEC media. A quaternized cellulose fiber membrane (CFM-QCS) was successfully fabricated that cellulose fibers were as a structural framework, glutaraldehyde (GA) as a crosslinking agent, and quaternary chitosan (QCS) as a modifying agent. Morphological and chemical characterization revealed that GA and QCS were uniformly crosslinked on the surface of the cellulose fibers, resulting in excellent mechanical properties in both dry and wet states. Benefiting from its 3D network scaffold structure, CFM-QCS demonstrated a high adsorption capacity for bovine serum albumin (BSA), with static and dynamic adsorption capacities of 605.15 mg/g and 88.63 mg/ml, respectively. After treated with extreme conditions and 10 cyclic adsorption and elution, the adsorption capacity of CFM-QCS remains almost unchanged, highlighting its excellent stability. Additionally, a CFM-QCS packed chromatography column exhibited high flux of 10.38 L/h at 0.1 MPa, which can efficiently separate IgG from a mixed solution in the presence of BSA and IgG by gravity-driven. This work presents a straightforward approach for preparing high-performance ion-exchange chromatography membranes for IgG separation.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-05DOI: 10.1016/j.coco.2024.102113
Developing an efficient strategy to ensure the resistance of corrosion on Q235 carbon steel from liquid-based contaminants is a challenging work. Although superhydrophobic and superamphiphobic coatings have been fabricated, their susceptibility to oily liquids and poor mechanical robustness still limits their ability to tackle corrosion. Herein, the synthesis and fabrication of a new robust superamphiphobic nanocomposite was presented by combining the reinforcement properties of silicon oxide and the mechanical and thermal stability of zinc oxide into a polytetrafluoroethylene polymer matrix via a colloidal homogenization route. The newly developed composite exhibits a hierarchical bumpy structure, leading to excellent water and oil repellent properties. Importantly, the composite possesses a robust mechanical stability to sandpaper abrasion over a distance of 2000 cm under a 100 g load and a stronger adhesion to substrate. As a result, Q235 coated with this composite exhibits an excellent corrosion resistance in saline water for up to 120 days, and a good self-cleaning and antifouling abilities in most corrosive media. This finding reveals a new pathway for resisting the corrosion attacks on Q235 carbon steel and thereby rendering this strategy with practical application in industrial and marine settings.
{"title":"Surface engineering of Q235 carbon steel through a superamphiphobic composite coating enabling robust corrosion resistance and antifouling","authors":"","doi":"10.1016/j.coco.2024.102113","DOIUrl":"10.1016/j.coco.2024.102113","url":null,"abstract":"<div><div>Developing an efficient strategy to ensure the resistance of corrosion on Q235 carbon steel from liquid-based contaminants is a challenging work. Although superhydrophobic and superamphiphobic coatings have been fabricated, their susceptibility to oily liquids and poor mechanical robustness still limits their ability to tackle corrosion. Herein, the synthesis and fabrication of a new robust superamphiphobic nanocomposite was presented by combining the reinforcement properties of silicon oxide and the mechanical and thermal stability of zinc oxide into a polytetrafluoroethylene polymer matrix via a colloidal homogenization route. The newly developed composite exhibits a hierarchical bumpy structure, leading to excellent water and oil repellent properties. Importantly, the composite possesses a robust mechanical stability to sandpaper abrasion over a distance of 2000 cm under a 100 g load and a stronger adhesion to substrate. As a result, Q235 coated with this composite exhibits an excellent corrosion resistance in saline water for up to 120 days, and a good self-cleaning and antifouling abilities in most corrosive media. This finding reveals a new pathway for resisting the corrosion attacks on Q235 carbon steel and thereby rendering this strategy with practical application in industrial and marine settings.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-10-01DOI: 10.1016/j.coco.2024.102111
To bridge industrial production and lab-scale research, this work demonstrates a technology to manufacture curved surface structural battery composites (CSBCs) that can simultaneously achieve electrochemical energy storage and load-bearing. The curved-surface carbon fiber structural anode and cathode are fabricated by coating the active materials on carbon fiber fabric with a vacuum-bag-assisted technique. The resin transfer molding (RTM) process is conducted to manufacture the coupled CSBCs by infusing bi-continuous phase epoxy resin electrolyte and curing at high temperatures. The microstructure of structural electrodes and CSBCs is characterized by scanning electron microscopy (SEM). Due to good interfacial compatibility between high mechanical strength carbon fiber structural electrode and high ionic conductivity solid polymer electrolyte bulk for load support, the fabricated CSBCs demonstrate a high density of 294 mWh kg−1 based on the whole mass of devices, a tensile strength of 257.4 MPa with Young's modulus of 12.9 GPa and a flexural strength of 194.1 MPa with flexural modulus of 11.1 GPa. In situ electrochemical-mechanical tests further confirm the durability of CSBCs under mechanical loads with a multifunctional efficiency of 1.07, suggesting the effectiveness of the introduced manufacturing techniques for coupled structural battery composites.
{"title":"Curved surface coupled structural battery composites manufactured by resin transfer molding process: Microstructure and multifunctional performance","authors":"","doi":"10.1016/j.coco.2024.102111","DOIUrl":"10.1016/j.coco.2024.102111","url":null,"abstract":"<div><div>To bridge industrial production and lab-scale research, this work demonstrates a technology to manufacture curved surface structural battery composites (CSBCs) that can simultaneously achieve electrochemical energy storage and load-bearing. The curved-surface carbon fiber structural anode and cathode are fabricated by coating the active materials on carbon fiber fabric with a vacuum-bag-assisted technique. The resin transfer molding (RTM) process is conducted to manufacture the coupled CSBCs by infusing bi-continuous phase epoxy resin electrolyte and curing at high temperatures. The microstructure of structural electrodes and CSBCs is characterized by scanning electron microscopy (SEM). Due to good interfacial compatibility between high mechanical strength carbon fiber structural electrode and high ionic conductivity solid polymer electrolyte bulk for load support, the fabricated CSBCs demonstrate a high density of 294 mWh kg<sup>−1</sup> based on the whole mass of devices, a tensile strength of 257.4 MPa with Young's modulus of 12.9 GPa and a flexural strength of 194.1 MPa with flexural modulus of 11.1 GPa. In situ electrochemical-mechanical tests further confirm the durability of CSBCs under mechanical loads with a multifunctional efficiency of 1.07, suggesting the effectiveness of the introduced manufacturing techniques for coupled structural battery composites.</div></div>","PeriodicalId":10533,"journal":{"name":"Composites Communications","volume":null,"pages":null},"PeriodicalIF":6.5,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142424722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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