Construction and Building Materials, volume 414, pages 135043

Preparation and electrothermal performance of nickel tailing modified nano-graphite/multilayer graphene composite coating

Hongliang Hu 1, 2
Longxiang Liu 1, 2
Dawei Jiang 1, 2
Yujie Jin 1, 2
Shasha Liu 3
Shasha Li 3
Lifang Xiao 1
Liguang Xiao 1, 2
Chun Li 3
Chun Li 3
Huan Wang 1
Huan Wang 1, 2
Yang I Li 1
Y Li 1
Guoqiang Wang 1
Junbin Li 1
Zhanyi Sun 1
Shuangning Wang 1
Dapeng Xu 1
Xu Ding 1
Yu Lei 1
Longfei Yu 1
Zhipeng Lu 1
Show full list: 23 authors
1
 
School of Materials Science and Engineering, Jilin Jianzhu University, Changchun, Jilin 130118, China
2
 
Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun, Jilin 130118, China
3
 
School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
Publication typeJournal Article
Publication date2024-02-01
scimago Q1
wos Q1
SJR1.999
CiteScore13.8
Impact factor7.4
ISSN09500618, 18790526
General Materials Science
Building and Construction
Civil and Structural Engineering
Abstract
In this study, nickel tailings were utilized to prepare electrothermal coatings composited with nano-graphite/multilayer graphene, and the effects of heat treatment temperature and time of nickel tailings on the performance of electrothermal coatings were investigated. The experimental results show that the addition of nickel tailings can significantly enhance the performance of the composite electrothermal coatings. Using nickel tailings treated at 60 °C for 2 h caused the temperature response time of the coatings to decrease by 57%, and the maximum temperature was 55.4 °C. However, as the treatment temperature was increased to 100 °C, a large amount of oxygen was introduced into the system, which led to a weakening of the ferric ion conduction in the ferromagnesian olivine, resulting in only a 28.6% reduction in the temperature response time at the maximum temperature of 45.4 °C. Meanwhile, it was established that the multidimensional stabilized conductive network formed by nickel tailings and nano-graphite/multilayer graphene enhanced the comprehensive performance of the coating. In addition, the study on the coating work stability revealed that the electrothermal coating prepared by adding nickel tailings treated at 60 °C for 2 h can maintain the maximum stable temperature above 55 °C for a long period of time, which is significantly better than the samples without nickel tailings and with nickel tailings heat-treated at 100 °C. This electrothermal composite coating is particularly suitable for low-pressure and low-power high-efficiency heating equipment, energy saving and environmental protection. Compared with the existing work, this experiment uses nickel tailings solid waste as auxiliary filler, which has the advantages of low cost, simple fabrication process, energy saving, environmental protection, low energy consumption, etc. It provides a more sustainable and eco-friendly solution for heating needs in a variety of fields. The material will be developed in the direction of higher conversion efficiency and higher temperature threshold in the future. It can be widely used in the fields of intelligent heating of houses, intelligent electric heating of clothes, and de-icing of wings of aircrafts.
Cao D., Bouzolin D., Lu H., Griffith D.T.
Composites Part B: Engineering scimago Q1 wos Q1
2023-09-01 citations by CoLab: 154 Abstract  
Fused deposition modeling (FDM) printed polymers are rarely used as a structural material due to anisotropic and low mechanical properties compared with conventional composites. In recent years, greater need has been expressed for recycling of materials, such as recyclable FDM, at the end of service life to reduce environmental pollution and manufacture cost. However, how the amount of resin uptake in the skin and skin/core interphase affects the bending and shear performance of the sandwich composites when replacing the low strength and ductile core (conventional core) with a high strength and brittle core (FDM printed PLA (polylactic acid) core) still remains unclear. A new manufacturing routine is needed to improve the incorporation of FDM printed polymers in composite structures. In this work, FDM printed PLA was used as core material and sandwiched between two unidirectional glass fiber reinforced polymer (GFRP) skins to form a sandwich composite by compression-molding (CM) process, which provides a good manufacturing strategy for skin/core interphase modification. The significance of the CM process is proved by investigating the effect of resin uptake on bending and in-plane/out-of-plane shear performances. Current first order shear deformation (FSDT) theory lacks a direct connection between the in-plane shear stress and out-of-shear stress in the core region of sandwich composites. With the help of DIC, a connection between the in-plane shear and the out-of-plane shear strain was built and in-plane shear properties can acquire through out-of-plane shear properties, hence reducing the redundancy of sample preparation or the need for simulation. A significant improvement was found compared with the optimized resin uptake (Optimized resin uptake range: 20.43%–22.86 wt%) 3D-printed PLA core sandwich composite and lowest performance sandwich composite (Improvement: in-plane shear strength (∼34%)/modulus (∼29%), out-of-plane shear strength (∼25%)/modulus (∼31%), specific peak bending load (∼19%)). Compared with balsa core sandwich composites, the 3D-printed cores are suitable for use in composite sandwich structures in many applications with a satisfactory strength-to-weight ratio.
Cao D.
2023-08-31 citations by CoLab: 71 Abstract  
The application of the fusion joining method for composite structures is associated with a nonuniform heat distribution in the heating element, because of which it is difficult to maintain a high bonding quality when upscaling this process. To address this issue, two layers of multiwalled carbon nanotube (MWCNT) sheets were interleaved in a carbon fabric heating element to alleviate the low-temperature issue at the edges of the heating element. The temperature at the edges of the heating element increased from 70–80 °C to 160–180 °C. Six different sizes of the heating element were selected to study the effect of the element size on the heat distribution. Lap shear tests were conducted, and the results showed that the lap shear strengths of the carbon fabric heating elements interleaved with MWCNT sheets improved by 49.9%, 71.5%, 84.1%, 110.5%, 118.2%, and 153.6%, respectively. Therefore, the interleaving of the heating element with MWCNT sheets can help improve the bonding quality in the resistance welding of thermoplastic composites.
Lei Z., Duan S., Wu X., Gao C., Wang L., Min X., Huang Z., Fang M., Luo R., Luo B.
2023-03-01 citations by CoLab: 6 Abstract  
Electrothermal elements are used in electronic devices, physiotherapy, and health care due to their lightweight and fast temperature response. However, the high cost and susceptibility to oxidation of traditional electrothermal materials limit their application. In this work, a low-cost, environment-friendly, controllable, and high-performance natural flake graphite-based electrothermal coating is proposed that can be used in various electrothermal applications. The results demonstrate that the morphology and electrothermal properties of the coatings can be controlled based on pressure engineering and the use of various adhesives. The uncompressed electrothermal coatings can reach a maximum temperature of 157.9 °C and a maximum electric conductivity of 27.89 S/m at 36 V, whereas the compressed coatings can reach a maximum temperature of 199 °C at only 18 V and a maximum conductivity of 433.6 S/m, which is 22 times higher than the corresponding uncompressed coatings. This work provides a low-cost, high-performance, and well-attainable industrialization path for the application of natural graphite-based electrothermal coatings in indoor heating, light electrothermal clothing, and snow and ice removal.
Gao P., Liu W., Yang J.
2022-07-21 citations by CoLab: 8 Abstract  
Electrothermal materials can easily and controllably convert electric energy into heat energy, and are widely used in many electrothermal fields. In this paper, a series of conductive pastes were simply prepared by ball milling, and their rheological and electrothermal properties were studied. Phenolic resin was used as curing agent of epoxy resin and rheological modifier, which could make the paste have very good printing applicability. Ultrafine carbon(UC) powder has excellent dispersion effect. Sheet carbon materials such as graphite powder(GP), graphite nanosheet(GS) and graphene(GE) would improve the performance of paste using only UC as conductive filler. It was proved that GE with the smallest thickness has the most obvious lifting effect. UC was gathered around the graphene sheet, as a bridge between graphene sheets. GE could also be connected with each other to build a more effective and denser conductive path. The electrothermal film could reach 199°C under 30 V voltage, increasing by 254.7% compared with the electrothermal film with only UC as conductive filler. The electrothermal film had a short response time, good recyclability and excellent flexibility. The electrothermal film also had certain electromagnetic shielding efficiency. The electromagnetic shielding efficiency SE could reach about 20 dB at 30–1500 MHz, and the ratio of field strength before and after attenuation SE% could reach 97% + . This electrothermal film has simple preparation process, good printing applicability, controllable film resistance, excellent flexibility, fast response speed and good recyclability. It is suitable for large-scale preparation and has broad application prospects in many scenarios.
Lou Z., Wang Q., Zhou X., Kara U.I., Mamtani R.S., Lv H., Zhang M., Yang Z., Li Y., Wang C., Adera S., Wang X.
2022-06-01 citations by CoLab: 83 Abstract  
· This work shows the relationship between the orientation of micro-/nanostructures of the EM absorbers and the associated EM parameters. · A mechanism to describe the underlying mechanism behind the EM incident angle sensitivity of the EM absorbers is proposed in this work. · The proposed mechanism guided the development of a novel class of EM absorbers with wide-angle, high-performance EM absorption. · A graphitized carbon nanospheres derived from bamboo exhibit angle-insensitive and wideband EM absorption performance with an effective absorption band up to 3.5 GHz under a thickness of 1.4 mm only. Electromagnetic (EM) wave absorbers with wideband absorption capability are proposed as a strategy to mitigate environmental pollution by EM waves. However, designing an EM absorber with its performance capacity independent of the EM wave incident angle remains elusive to date. Resolving this challenge requires development of EM absorbers whose EM absorption performance is insensitive to the EM wave incident angle. Herein, we synthesized EM absorbers with a variety of structures with different symmetries (including micro-/nanospheres, nanoflakes and nanotubes) to study the effect of the EM absorbers' structure and the EM wave incident angle on the EM absorption performance. Our analysis reveals that non-magnetic EM absorbers with spatially symmetric nanostructures exhibit excellent EM wave incident angle-insensitivity. Finally, we demonstrate that a class of non-magnetic EM absorbers made from bamboo derived-carbon nanospheres exhibit EM incident angle-insensitivity and wideband EM absorption performance with an effective absorption band up to 3.5 GHz when the thickness is 1.4 mm, a significant improvement from prior studies which used thicknesses as high as 3–4 mm for comparable EM absorption performance.
Liang S., Wang H., Tao X.
2022-03-01 citations by CoLab: 17 Abstract  
Cationic cellulose nanofibril (CCNF)-based electrothermal composites were successfully fabricated using simple ultrasonic dispersion and vacuum filtration of cationic cellulose nanofibril mixtures with 40 wt% mixed carbon fillers of different proportions of multiwalled carbon nanotube (MWCNT) and reduced graphene oxide (RGO). The motivation of this study was to investigate the electrothermal synergetic effect of different proportions of nanocarbon filler on the CCNF matrix. The results showed that MWCNT and RGO were evenly dispersed within the CCNF matrix, forming a multidimensional conductive network. The composites were endowed with high electrical conductivity from 1.17 S/cm to 7.58 S/cm and demonstrated an advantageous correlation of voltage–current and electric power–voltage with increasing MWCNT in the mixed carbon fillers. The electrothermal composite exhibited a remarkable heating and cooling response and electrothermal stability, and the efficient heating temperature for a ratio of MWCNT to RGO of 35:5 reached 102.15 °C at an applied voltage of 18 V. Furthermore, the mixed use of MWCNT and RGO effectively improved the electrothermal performance, its average electrothermal response time was less than 43.32 s, and the electrical power consumed was 32.85 mW/°C. This electrothermal composite has promising applications in eco-friendly and flexible resistance heating electronics.
Lou Z., Wang Q., Kara U.I., Mamtani R.S., Zhou X., Bian H., Yang Z., Li Y., Lv H., Adera S., Wang X.
Nano-Micro Letters scimago Q1 wos Q1 Open Access
2021-12-04 citations by CoLab: 215 PDF Abstract  
Although advances in wireless technologies such as miniature and wearable electronics have improved the quality of our lives, the ubiquitous use of electronics comes at the expense of increased exposure to electromagnetic (EM) radiation. Up to date, extensive efforts have been made to develop high-performance EM absorbers based on synthetic materials. However, the design of an EM absorber with both exceptional EM dissipation ability and good environmental adaptability remains a substantial challenge. Here, we report the design of a class of carbon heterostructures via hierarchical assembly of graphitized lignocellulose derived from bamboo. Specifically, the assemblies of nanofibers and nanosheets behave as a nanometer-sized antenna, which results in an enhancement of the conductive loss. In addition, we show that the composition of cellulose and lignin in the precursor significantly influences the shape of the assembly and the formation of covalent bonds, which affect the dielectric response-ability and the surface hydrophobicity (the apparent contact angle of water can reach 135°). Finally, we demonstrate that the obtained carbon heterostructure maintains its wideband EM absorption with an effective absorption frequency ranging from 12.5 to 16.7 GHz under conditions that simulate the real-world environment, including exposure to rainwater with slightly acidic/alkaline pH values. Overall, the advances reported in this work provide new design principles for the synthesis of high-performance EM absorbers that can find practical applications in real-world environments.
Ba H., Truong-Phuoc L., Romero T., Sutter C., Nhut J., Schlatter G., Giambastiani G., Pham-Huu C.
Carbon scimago Q1 wos Q1
2021-09-01 citations by CoLab: 41 Abstract  
Conductive polymer-based composites with electro-thermal properties are gaining great interest in several challenging technological applications. They are more and more employed as integrated heating devices within smart buildings or de-icing materials for application spanning from the aerospace sector to that of civil engineering. Their lightweight character along with high thermal efficiency and moderate production costs, make them highly attractive alternative to the use of classical electrothermal systems based on costly and heavier metals. Here we describe a convenient approach to the preparation of few-layer graphene-based (FLG) polymer composites obtained from the surface coating of selected polymer matrices with an electrically conductive and thin FLG “skin”. We demonstrated that low FLG concentrations at the outmost polymer surface, together with an excellent and homogeneous surface adhesion, allowed to get fast-responsive and lightweight heatable devices while keeping unchanged the properties of the underlying polymers. A controlled low-temperature post-treatment of the composites ensured an extremely high adhesion of FLG sheets to the hosting polymer substrate. The as-prepared composites have shown fast on/off heating response and exceptional performance once employed as lightweight and low-power heating devices with de-icing properties.
Olabi A.G., Abdelkareem M.A., Wilberforce T., Sayed E.T.
2021-01-01 citations by CoLab: 603 Abstract  
Most applications in energy storage devices revolve around the application of graphene. Graphene is capable of enhancing the performance, functionality as well as durability of many applications, but the commercialization of graphene still requires more research activity being conducted. This investigation explored the application of graphene in energy storage device, absorbers and electrochemical sensors. To expand the utilization of graphene, its present limitations must critically be addressed to improve their current performance. Again, in terms of applications, the advantages of graphene has widened their application in both electroanalytical and electrochemical sensors. These good characteristics of graphene must be extended further and improved to make them suitable for other applications. Critical study of facile synthesis of graphene coupled with detailed investigation into the structure of graphene oxide at the molecular level will equally improve the performance of this novel material. Effects of defects on the performance of graphene oxide was also identified as another key area of research that needs much attention to accelerate the commercialization of this material. With the rapid growth in the application of the graphene in different energy storage/conversion applications, it is essential to summarize and discuss the up-to-date progress in the application of graphene in these fields.
Liao Y., Tian Y., Ma X., Zhao M., Qian J., Wang X.
2020-09-25 citations by CoLab: 39 Abstract  
A liquid-phase stripping method was used to strip the graphite under the action of mechanical shear force to prepare graphene nanosheets (GNSs) on a large scale. Given the multicomponent composite conductive particles formed by GNSs with acid-treated MWCNTs (f-MWCNTs) and carbon black (CB), the three-dimensional (3D) intercalation electrothermal composite of GNSs/MWCNTs/CB with excellent conductivity and mechanical properties was prepared with water-based acrylic resin as a connector. Carbon particles (16.97 wt %) are found in the composite and the sheet resistance (Rs) is only 4 Ω sq-1 as f-MWCNTs and CB intercalations form a more stable 3D conducting medium between the GNSs. The flexible electrothermal film (2.5 cm × 2.5 cm) printed with the 3D intercalation GNSs/MWCNTs/CB composite had a saturation temperature (Ts) of 175 °C with an input of 3 V and lower power consumption (249.87 cm2 W-1). It only takes 10 s to reach Ts and the electrical performance is still intact under the pressure of 1 × 105 kPa. After being bent 2500 times (bending radius is 5 mm), the electrothermal performance of the flexible electrothermal film remained stable.
Li X., Shao C., Zhuo B., Yang S., Zhu Z., Su C., Yuan Q.
2019-10-01 citations by CoLab: 29 Abstract  
Nanofibrillated cellulose (NFC) as a natural macromolecule, binder, dispersant, enhancer, was utilized to facilitate the assembly of graphene sheets, imparting a steady stacked structure by the sheets to the electric heating membrane with flexibility and uniform heating performance. Strong interface bonding formed in the membrane, which combined graphene sheets to be a steady conductive network structure for electric heating. The membrane attained an equilibrium temperature rise to 60°C in 3min under 2000Wm-2, which increased linearly with increasing power density and graphene content. Decreased resistance between two electrodes was caused by electric-heat coupling effect which led to a decrease in the membrane's oxygen-containing groups as conducting electrification. The temperature distributing on membrane surface, and that as bent and distorted to different angles even simultaneously at the electric heating status, were all characterized by infrared thermal imaging to indicate the uniform distribution and well bonding performance between NFC and graphene, as well as the great flexibility in the biomass membrane. This study would further broaden the utilization of the natural nanocellulose-graphene biomass composites.
Shao C., Li X., Lin S., Zhuo B., Yang S., Yuan Q.
Journal of Materials Science scimago Q1 wos Q2
2019-09-13 citations by CoLab: 12 Abstract  
Nanofibrillated cellulose (NFC) can enhance the flexibility and mechanical performance of graphene composite, but there are few researches focusing on dispersibility of the composite via different dispersion conditions, which mainly determine their key properties. This presented work concentrated on the influence of ultrasonic power and time on the property of NFC suspension, graphene suspension, and the composite membrane. With the increase in the ultrasonic conditions, particle size of NFC suspension decreased and the static stability of graphene suspension was improved. NFC–graphene suspension exhibited excellent static stability even adopting the low ultrasonic conditions due to the electrostatic repulsive and adhesive effect among NFCs. After enhancing shearing force induced from ultrasonic waves and cavitation, graphene sheets could be effectively detached and dispersed, and then, the planar uniformity and structural integrity of NFC–graphene membrane tended to be better, which was characterized and confirmed by morphology, chemical, and thermal and phase structure analysis. Conductivity uniformity of the seven points on the membrane exhibited an increasing trend with the increase in the ultrasonic power and time, as well as the mechanical performance, while the heating temperature uniformity had no distinct change due to the excellent thermal conductivity of the graphene. The higher ultrasonic condition was conducive to the stability of electric heating performance. Consequently, the ultrasonic treatment with different conditions had impacted the incorporation of graphene into the NFC matrix. This study’s results would be a feasible reference for the improvement of the composite used in various areas.
Li A., Zhang C., Zhang Y.
Polymers scimago Q1 wos Q1 Open Access
2017-09-15 citations by CoLab: 320 PDF Abstract  
With the integration and miniaturization of electronic devices, thermal management has become a crucial issue that strongly affects their performance, reliability, and lifetime. One of the current interests in polymer-based composites is thermal conductive composites that dissipate the thermal energy produced by electronic, optoelectronic, and photonic devices and systems. Ultrahigh thermal conductivity makes graphene the most promising filler for thermal conductive composites. This article reviews the mechanisms of thermal conduction, the recent advances, and the influencing factors on graphene-polymer composites (GPC). In the end, we also discuss the applications of GPC in thermal engineering. This article summarizes the research on graphene-polymer thermal conductive composites in recent years and provides guidance on the preparation of composites with high thermal conductivity.
Yang J., Liu Y., Liu S., Li L., Zhang C., Liu T.
Materials Chemistry Frontiers scimago Q1 wos Q1
2017-01-01 citations by CoLab: 176 Abstract  
In recent years, high efficiency, low cost and environmental friendly energy storage has drawn attention to meet the constantly escalating energy crisis. Conducting polymers in their pristine form have difficulty in achieving satisfying characteristics required for practical applications in electrochemical capacitive energy storage. Considering that conducting polymer composites have emerged as pertinent and beneficial resources for electrochemical capacitive energy storage, this review investigates the relevant topics by presenting the approaches in the design and fabrication of conducting polymer composites as electrode materials for electrochemical capacitive energy storage. The key issues for achieving optimized supercapacitive performances, such as fabricating nanostructured electrodes and tailoring microstructures of conducting polymer composites, are described and concisely discussed in this review. Finally, an outlook of the prospects and challenges in terms of synthesis and applications of conducting polymer composites for supercapacitors is presented.
Wang D., Karato S., Jiang Z.
Geophysical Research Letters scimago Q1 wos Q1 Open Access
2013-04-15 citations by CoLab: 38 Abstract  
[1] Presence of graphite is one of the mechanisms to explain enhanced electrical conductivity. Because the conductivity of graphite is highly anisotropic and the connectivity of graphite depends strongly on the geometry of the crystals, the key issue is the geometry of graphite in a rock including their crystallographic orientation and the shape of graphite crystals. We explored the role of graphite on electrical conductivity in olivine-rich aggregates. To obtain well-defined results, we conducted an experimental study at high pressure and temperature conditions. Olivine aggregates containing diamonds were annealed to transform diamond to graphite with nearly equilibrium morphology. Graphite formed by the transformation from diamond has thin disk-shape morphology, the plane being the highly conductive (0001) plane. When the concentration of graphite exceeds the percolation threshold (~ 1 wt%), electrical conductivity is significantly enhanced. Some of the observed high conductivity regions may represent regions of high concentration of graphite.

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