APPLIED SURFACE SCIENCE
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2024
·
IF 6.3
Yanhua Lei,Haifeng Lan,Bochen Jiang,Yuan Yuan,Dmitry A. Vorontsov,Guanhui Gao,Yuliang Zhang,Qing Chen
Current advancements in anti-icing coatings emphasize the integration of photothermal, electrothermal, and superhydrophobic features to significantly enhance de-icing efficiency. However, these multifaceted coatings often involve intricate preparation methods and costly materials, making them susceptible to damage and reduced durability. This research aims to overcome these challenges by combining active and passive anti-icing principles to achieve full-time efficient anti-icing. A novel strategy is devised to modify the wettability of epoxy resins by grafting a fluorinated oligomer using a curing agent bridging technique. By utilizing micron-sized Titanium Nitride (TiN) and nanosized Acetylene Black fillers within a fluorine-modified epoxy resin, applied through a simple spray technique, the resulting coating exhibits excellent photothermal, electrothermal, and superhydrophobic properties. Evaluations confirm the coating’s robust mechanical durability for extended operational use and its stabilized effectiveness in photothermal and electrothermal de-icing. Notably, this approach maintains electrical conductivity by eliminating the filler hydrophobic modification, also enhancing the mechanical performance of nanocarbon-based multifunctional anti-icing coatings. Moreover, it simplifies the manufacturing process, reduces cost of coating materials, and enables broad application across various substrate surfaces.
研究领域:
材料科学
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表面工程
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涂层技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Zehang Zhou,Quancheng Song,Bingxue Huang,Shiyi Feng,Canhui Lu
The development of modern electronics has raised great demand for multifunctional materials to protect electronic instruments against electromagnetic interference (EMI) radiation and ice accretion in cold weather. However, it is still a great challenge to prepare high-performance multifunctional films with excellent flexibilty, mechanical strength, and durability. Here, we propose a layer-by-layer assembly of cellulose nanofiber (CNF)/Ti3C2Tx nanocomposites (TM) on a bacterial cellulose (BC) substrate via repeated spray coating. CNFs are hybridized with Ti3C2Tx nanoflakes to improve the mechanical properties of the functional coating layer and its adhesion with the BC substrate. The densely packed hierarchical structure and strong interfacial interactions endows the TM/BC films with good flexibility, ultrahigh mechanical strength (>250 MPa), and desirable toughness (>20 MJ cm–3). Furthermore, benefiting from the densely packed hierarchical structure, the resultant TM/BC films present outstanding EMI shielding effictiveness of 60 dB and efficient electro-/photothermal heating performance. Silicone encapsulation further imparts high hydrophobicity and exceptional durability against solutions and deformations to the multifunctional films. Impressively, the silicone-coated TM/BC film (Si-TM/BC) exhibits desirable low voltage-driven Joule heating and excellent photoresponsive heating performance, which demonstrates great feasibility for efficient thermal deicing under actual conditions. Therefore, we believe that the Si-TM/BC film with excellent mechanical properties and durability holds great promise for the practical applications of EMI shielding and ice accretion elimination.
研究领域:
材料科学
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纳米技术
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能源与环境
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2023
·Vol. 16
·期 13
·4498
·
IF 3.4
Guoshuai Cai,Jiaxuan Wu,Jiayi Guo,Yange Wan,Qingjun Zhou,Pengyu Zhang,Xiaolei Yu,Mingchao Wang
Currently, most thin-layer expandable coatings are polymer-based, with very few inorganic expandable coatings. Due to the high environmental friendliness of inorganic coatings, studying new types of inorganic coatings is of great significance. A novel amorphous aluminum phosphate-based flame-retardant coating was prepared by modifying it with nano-silica, hollow silica beads, hollow glass microspheres, and boron carbide. A comprehensive study was conducted on the flame retardancy and thermal insulation performance, composition and structural evolution under flame and physical and chemical properties, and the mechanisms of flame retardancy and thermal insulation were elucidated. Large-plate combustion testing, bonding strength testing, XRD, IR, TG-DSC, and SEM testing were all applied in this work. The synergistic effect of the four fillers was very obvious, and a series of AP22XY (nano-silica/silica beads/hollow glass microspheres/boron carbide = 2:2:0:4, 2:2:1:3, 2:2:2:2, 2:2:3:1, 2:2:4:0) coatings were prepared. The change in the ratio of glass microspheres to boron carbide had a significant impact on the composition and structural evolution of the coating, thus reflecting its effectiveness as a flame retardant and thermal insulation. Although decreasing the ratio would promote the formation of borosilicate glass and Al18B4O33and improve the thermal stability of coatings, the structure inside of the coating, especially the skeleton, would be dense, which is not conducive to thermal insulation. When the ratio of glass microspheres to boron carbide is 3:1, AP2231 shows the best fire resistance. Under the combustion of butane flame at about 1200–1300 °C, the backside temperature reaches a maximum of 226 °C at 10 min, and then the temperature gradually decreases to 175 °C at 60 min. This excellent performance is mainly attributed to three aspects: (1) the foaming and expandability of coatings when exposed to fire, (2) the multiple endothermic reactions the coating undergoes, and (3) the improvement effect of boron carbide. Additionally, AP2231 shows the best bonding performance with a strength of close to 4.5 MPa after combustion, because of the appropriate content matching between borosilicate glass, Al18B4O33, and hollow glass microspheres. The coating has potential application prospects in the construction and transportation fields, such as the protection of structural steel, fire prevention in subways and tunnels, and the prevention of lithium battery fires.Keywords:flame-retardant coating;thermal insulation;composition and structural evolution;thermal property;bonding performance
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yucheng Tian,Yixiao Chen,Sai Wang,Xianfeng Wang,Jianyong Yu,Shichao Zhang,Bin Ding
Maintaining body temperature within safe and comfortable range is crucial; however, thermoregulatory materials face challenges in variable environments and extreme application scenarios. Here, a unique dual air-gelation strategy is developed to synthesize carbon aerogel nanofiber metafabric for energy-harvesting thermoregulation. By manipulating polyacrylonitrile/water interaction and charge density of the solution, phase separation and Coulombic repulsion in electrospun jets are promoted, forming curly nanofibers with internal nanopores (size 30–60 nm) that entangle to create nanofibrous dual-aerogel structure; the carbon aerogel nanofiber metafabric is obtained following pre-oxidation and optimized graphitization. The resulting metafabric exhibits high elasticity, robust temperature resistance from −196 to 600 °C, exceptional thermal insulation performance, high-efficiency electrothermal capability (adjustable from 15 to 150 °C), and photothermal property (radiation raised temperature by 22 °C). This work provides rich possibilities to develop advanced carbon nanomaterials for thermal management.
研究领域:
材料科学
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能源工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULES
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2023
·
IF 5.5
Pengfei Tang,Chao Wen,Yuxian Xing,Chuantao Yin,Haoming Tai,Jiajun Feng,Juan He,Feng Jiang
Sustainable elastomers with high strength and unique functions are highly desired yet challenging. In this work, multiblock copolymer elastomers (MBCPEs) were synthesized by two sequential reversible addition–fragmentation chain transfer polymerization procedures with polytrithiocarbonate (PTTC) as the chain transfer agent and lignin-derived monomer vanillin acrylate as the rigid segment for the glassy blocks. Furthermore, magnetite (Fe3O4) microparticles were introduced into the as-prepared MBCPE to fabricate magnetic MBCPE@Fe3O4 composite elastomers. These composite elastomers exhibit significantly enhanced mechanical properties due to the excellent interfacial interaction between the microparticles and the matrix via the Schiff-base reaction. Besides, MBCPE@Fe3O4 composite elastomers show outstanding adhesion performance, magnetothermal behavior, and photothermal properties. Under near-infrared irradiation, the composite elastomers display rapid stimulus-healing and actuating phenomena via fast photothermal conversion. The combination of sustainable MBCPEs and functional microparticles can provide great potential for the development of intelligent materials with unique stimulus-responsive applications.
研究领域:
材料科学
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高分子化学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yue Liu,Na Wu,Sinan Zheng,Yunfei Yang,Bin Li,Wei Liu,Jiurong Liu,Zhihui Zeng
The development of flexible composites based on the transition metal carbides/nitrides (MXenes) is gaining popularity because of MXenes’ high application potentials for electromagnetic interference (EMI) shields. Here, we prepare a new type of ultraflexible composite films composed of “trashed” MXene sediment (MS) and waterborne polyurethane using a simple, facile solution casting approach. In addition to the outstanding mechanical strength and electrical conductivity, an extremely wide-range of MS contents can be achieved for the composites, resulting in EMI shielding effectiveness (SE) that may be controlled over a wide range. The X-band EMI SE of the flexible, low-density composites containing 70 wt % MS reaches 45.3 dB at a thickness of merely 0.51 mm. Moreover, the SE values of more than 34.5 dB in the ultrabroadband gigahertz frequency range including X-band, P-band, K-band, and R-band, are accomplished for the thin composites. Furthermore, the MS/WPU composite films show excellent electrothermal and photothermal performance, demonstrating the multifunctionalities of the MS-based EMI shields. Combined with the cost-efficient, sustainable, and scalable preparation approach, the ultraflexible, multifunctional composites from “trashed MXene” show great potentials for next-generation electronics. This work also opens a new avenue for the creation of innovative, high-performance, multifunctional flexible composites.
研究领域:
材料科学
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电子工程
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 20
·3493
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IF 4.329
Zhang Chen,Ting Yang,Lin Cheng,Jianxin Mu
First, nickel particles were deposited on the surface of graphite nanoplatelets to fabricate highly conductive GnPs@Ni core-shell structure hybrid fillers via electroplating. The modified GnPs were blended with polyphenylene sulfone via the solution blending method, followed by the hot-pressing method to achieve high thermally conducting GnPs@Ni/PPSU composites for high performance electromagnetic interference effectiveness. The results showed that in-plane and through-plane thermal conductivity of the composite at the 40 wt% filler loading could reach 2.6 Wm−1K−1and 3.7 Wm−1K−1, respectively, which were 9.4 and 20 times higher than that of pure PPSU resin. The orientation degree of fillers was discussed by XRD and SEM. Then, heat conduction data were fitted and analyzed by the Agari model, and the heat conduction mechanism was further explored. The testing results also demonstrated that the material exhibited good conductivity, electromagnetic shielding effectiveness and superior thermal stability. Overall, the GnPs@Ni/PPSU composites had high thermal conductivity and were effective electromagnetic shielding materials at high temperatures.Keywords:graphene;thermal properties;composites
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2020
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IF 8.821
Baoxi Zhang,Yuxin Ying,Yixue Zhu,Yinan Jiang,Yongxia Zhang,Yunfeng Qiu
Interphase in polymer composites plays a key role in enhancing their multi-functionality. Herein, an effective strategy is designed to optimize the interphase microstructure in graphene foam/PDMS (PDMS/GrF) using polypyrrole (PPy) nanowires (denoted as PDMS/GrF@PPy). The interfacial microenvironment of graphene foam is successfully modified by anchoring polypyrrole nanowires, showing strong interfacial strength with PDMS . The tensile strength , Young’s modulus, electrical conductivity , thermal conductivity , mechanical durability and electron-photo-thermal deicing efficiency of PDMS/GrF@PPy composites are simultaneously higher than that of PDMS/GrF composites. Molecular simulations further illustrated that the interfacial interaction energy increased from 100.4 to 280.2 kcal/mol after introducing PPy nanowires between GrF and PDMS. As a proof of concept for deicing application, PDMS/GrF@PPy composites displays excellent deicing efficiencies of 82.9% and 55.7% by Joule heat and NIR irradiation after 500th stretching cycles, respectively, which is obviously outperforming PPy@GrF composites (58.3% and 44.2%). Consequently, PPy nanowires not only optimizes the interfacial strength of polymer composites, but also endows them with multi-functionalities, providing promising candidates of deicing, strain sensor, thermal interface management, etc.
研究领域:
材料科学
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复合材料工程
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界面工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 5
·803
·
IF 3.164
Feng Bao,Fengfeng Zhang,Chenghao Wang,Yuanyuan Song,Nan Li,Jinyan Wang,Xigao Jian
The application of poly(phthalazinone ether ketone)s (PPEKs) resin containing phthalazinone moiety is limited, due to its poor thermoforming processability. To investigate the effects of the phthalazinone’s side-group on the thermal stability and processability of the resin, a series of PPEKs resins with different side-group (–H/–CH3/–Ph) were prepared by nucleophilic aromatic substitution polymerization. The properties of the obtained resins were investigated by differential scanning calorimetry analysis (DSC), thermogravimetric analysis (TGA), dynamic thermomechanical analysis (DMA), and rheogoniometer. The results show that the introduction of methyl or phenyl into the PPEKs resin, significantly reduced the melting viscosity of the resin, but resulted in a slight decrease in the thermal stability of it. This might be due to the presence of methyl or phenyl, which enhanced the free volume of the molecule and reduced the entanglement between the chains; the results of the computer simulation confirmed it. Moreover, the resin films displayed excellent tensile strength with the introduction of methyl or phenyl. In a word, a novel poly(phthalazinone ether ketone)s resin with thermal resistance, easy processing and excellent mechanical properties could be obtained by introducing appropriate bulk-rigid side-groups into the phthalazinone moiety.Keywords:phthalazinone;side-group;thermal properties;processability
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 7
·1260
·
IF 5.3
Huanran Miao,Yanlong Wu,Cheng Zhou,Zhimao Yang,Chuncai Kong
The controlled growth of Cu2S nanoarrays was constructed by a facile two-step impregnation synthesis route. The as-synthesized Cu2S/CuO@Cu samples were precisely characterized in terms of surface morphology, phase, composition, and oxidation states. At the laser irradiation of 808 nm, Cu2S/CuO@Cu heated up to 106 °C from room temperature in 120 s, resulting in an excellent photothermal conversion performance. The Cu2S/CuO@Cu exhibited excellent cycling performance—sustaining the photothermal performance during five heating-cooling cycles. The finite difference time domain (FDTD) simulation of optical absorption and electric field distributions assured the accuracy and reliability of the developed experimental conditions for acquiring the best photothermal performance of Cu2S/CuO@Cu.Keywords:Cu2S nanoparticles;photothermal;FDTD
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2024
·
IF 3.1
Zhu Rongli,Pu Zejun,Peng Qiuxia,Wang Xu,Zheng Pan,Wu Fang,Yu Dayang,Ni Wenlong,Chen Keli,Zhong Jiachun
Heat-resistant semi-aromatic poly (decamethylene terephthalamide) acid (PA10T) and a series of poly (decamethylene terephthalamide/decamethylene furanamide) (PA10T/10F) with a high content of bio-based carbon were synthesized by a cost-effective high-pressure solution polycondensation method. The chemical structures of the obtained samples were evaluated by Fourier infrared spectroscopy (FT-IR). Moreover, the effect of the addition of copolymer 2,5-furandicarboxylic acid (FDCA) and the copolymerization ratios of FDCA for PA10T on thermal performances, crystallization behaviors, and mechanical properties of PA10T and PA10T/10F were studied in detail. In addition, the results of DSC indicate that the melting points of PA10T/10F copolyamides can be adjusted appropriately by varying the feed ratios of FDCA, suggesting the improvement of processabilities. Besides, with increasing the copolymerization ratios of FDCA, the sizes of spherulites decreased gradually analyzed by POM. Furthermore, the results of XRD showed that the PA10T homopolymer and PA10T/10F copolyamides possess similar shapes around 2θ = 21°. In addition, compared with pure PA10T, the tensile strength, breaking elongation, bending strength, bending modulus, and izod impact strength all increased obviously when the feed ratio of FDCA and terephthalic acid (PTA) was 5:95. Therefore, the crystallization behaviors, processing performances, and mechanical characteristics of PA10T can be improved significantly by introducing FDCA, to improve the bio-based carbon content of PA10T and meet the increasing demand for environmentally friendly materials all over the world.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Dongxia Chen,Xiaofei Yan,Mengjie Yang,Xianli Wang,Linjie Fu,Mingyu Li,Zhanjun Yu
ZrP 2 O 7 is a promising material with excellent thermal and electrical properties. However, when temperature approaches to 563 K, it undergoes a structural phase transition, which will cause large thermal stresses. When Zr is substituted by Y and Nb, a new material of (YNb) 0.2 Zr 0.6 P 2 O 7 , was successfully prepared and the phase transition of material was effectively inhibited. This new material adopts a cubic structure similar to ZrP 2 O 7 , and exhibits medium thermal expansion (α = 7.1 × 10 −6 K −1 ) in the measured range of 200–1073 K. The values of thermal conductivity from RT to 973 K are between 0.4474 W m −1 K −1 and 0.8526 W m −1 K −1 , which can be comparable to the values of traditional thermal insulation materials. The dielectric constant and dielectric loss factor at the frequencies above 1 MHz are stable and low. The electrical conductivity of the material indicates that it is electronically insulating at RT-573 K.
研究领域:
材料科学
·
热力学
·
电学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）