APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Hangchuan Cai,Congzhen Xie,Bin Gou,Jiangang Zhou,An Zhong,Daoming Zhang,Huasong Xu,Chunhui Bi,Rui Wang
Polymer coatings (PC) have been widely used for electrical equipment. However, the hydrophobicity of PC is generally low, which falls short of the need for electrical equipment against safe operation. Here, we report a scalable PC based on a SIS grafted KH590 by click chemistry reaction, and in-situ synthesized SiO 2 filled the coatings with intrinsic micro-nano structures to attain the superhydrophobicity, which are exhibit insulating property ( E b of 110.9 MV/m, wet flashover strength of 39.5 % higher). Both simulation and experimental results confirm that SIS grafted KH590 and TEOS hydrolyzed SiO 2 form dense but rough surface at the micron-nanoscale, decreasing surface energy. In combining the advantages of extraordinary insulating performance, this approach is viable for large-scale production of PC.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Wangchang Li,Weichao Yang,Yao Ying,Jing Yu,Jingwu Zheng,Liang Qiao,Juan Li,Shenglei Che
FeSiAl soft magnetic composites (SMCs) with phosphate-silicone resin as the insulating layer were prepared by phosphating FeSiAl powder with K 3 PO 4 solution. The effects of K 3 PO 4 content on the microstructure and composition of the insulation coating were investigated. Further, the soft magnetic properties of SMCs were analyzed in detail. It is revealed that the annealed inorganic coating layer which predominantly consists of Al(PO 3 ) 3 , Al 2 O 3 , and P 2 O 5 exhibits a high resistivity, high temperature resistance and thin thickness, significantly reducing the eddy current loss. The outstanding magnetic properties of a power loss of 118.6 kW/m 3 (100 kHz, 0.1 T) and permeability of 63.8 were achieved for this high-quality thin insulation coating. Moreover, the magnetic loss was separated into hysteresis, eddy current and excess part, and the mechanism was analyzed in detail. The reduced total loss can be ascribed to the suppression of the eddy current. The novel SMCs coating with K 3 PO 4 are particularly suitable for applications in high frequency and high DC bias situations for switching power supplies, photovoltaic inverter boost inductors and other applications.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Ying Zhang,Yuanqing Chen,Shufeng Li,Jianguo Lu,Miao Du,Zhichao Jiao,Juntao Zou
The hollow double-shell Silicon dioxide/antimony doped tin oxide (SiO 2 @ATO) spherical microspheres with size of 320 nm were prepared by hydrothermal method using PS spheres as templates. The morphology, crystal structure and microstructure of hollow SiO 2 @ATO microspheres were characterized by XRD , SEM, EDS and HRTEM . In addition, the composite coatings were prepared by adding different contents of hollow SiO 2 @ATO to the acrylic matrix, and their optical and thermal insulation properties were studied. The light transmittance of the acrylic matrix coating with 1.5 wt% hollow double-shell SiO 2 @ATO can reach ∼80%. Moreover, it was found that the hollow double-shell SiO 2 @ATO/acrylic matrix coating lowered the indoor temperature of a homemade incubator by 9.5 °C. Overall, the prepared hollow SiO 2 @ATO microspheres show a great potential in the application of energy saving windows.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 16
·1-12
·
IF 2.8
Li Hao,Yang Yujie,Chen Congliang,Chen Dongyang,Zhang Yingming,Meng Yuting,Zhang Zhengyu
Low loss FeSiBCr soft magnetic powder cores were prepared by the joint coating of ZnO nanoparticles and epoxy resin. In this study, the content of ZnO nanoparticles and epoxy resin is regulated to find the best proportion of insulating coating. Scanning electron microscope exhibits that the surface of amorphous magnetic powders was covered with ZnO nanoparticles, and element distribution analysis also shows that ZnO nanoparticles are well coated on the surface of magnetic powder. The loss of soft magnetic composite materials were measured by B–H analyzer. The results show that the optimum mass ratio of ZnO nanoparticles to resin is 1:2, and FeSiBCr amorphous soft magnetic powder cores show the lowest loss of 209.4 mW/cm 3 ( f = 1000 kHz, B m = 20 mT).
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2015
·Vol. 212
·期 9
·2023-2030
·
IF 1.616
Xia Chen,Hongwei Jiang,Robert A. Hayes,Xiange Li,Tao He,Guofu Zhou
The screen printing of amorphous fluoropolymer films as insulators for electrofluidic display device use is demonstrated. Screen printing enables the hydrophobic dielectric to be directly patterned at device level with the required film thickness as well as excellent material utilisation. The films give very good electrical performance, with high uniformity and dielectric strength, and the resulting devices exhibit comparable electro-optic behaviour to those fabricated with spin-coated films.
研究领域:
材料科学
·
显示技术
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xiaohan Liu,Juan Chen,Haijun Fan,Jiacheng Zhang,Mingshu Yang
Antimony tin oxide (ATO) holds great promise as a transparent conductive oxide in near-infrared insulation applications. Reducing the particle size of ATO and improving its uniform dispersion are the key problems to be solved in preparing thermal insulation windows with excellent spectral selectivity. The post-synthetic dispersion of ATO is particularly challenging. This study introduced branched polyethyleneimine (PEI) as a novel dispersant for ATO. Through ball milling in ethanol, PEI's chelation and spatial stabilization efficiently reduced the average particle size of ATO to 26.7 nm. The resulting ATO ethanol dispersion demonstrated superior long-term storage and centrifugation stability. Compounding the dispersion with polyvinyl butyral (PVB) yielded ATO/PVB coatings, which exhibited the superior near-infrared shielding efficiency while maintaining a high visible transmittance and a low haze. Subsequently, the ATO/PVB coating exhibited excellent thermal insulation properties, reducing the temperature rise by 17.2°C compared to blank glass after 10 minutes of irradiation with a NIR lamp. The work demonstrates the potential of the coating for efficient energy-saving window applications.
研究领域:
材料科学
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能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2018
·
IF 3.046
Bang Zhou,Yaqiang Dong,Lei Liu,Liang Chang,Fengqin Bi,Xinmin Wang
The core-shell structured FeSiBCCr@TiO 2 amorphous magnetic powder cores (AMPCs) with excellent comprehensive magnetic properties were successfully prepared using spherical amorphous powders with high quality insulating layer. Scanning electron microscopy, Energy dispersive X-ray spectroscopy analysis, X-ray diffraction, and Fourier transform infrared spectroscopy revealed that the surface of the Fe-based amorphous powders was covered by a continuous amorphous TiO 2 insulation layer. The performances of the AMPCs can be well tuned by changing the thickness of the insulation coating layer, which can be adjusted by controlling the concentration of tetrabutyl titanate (TBOT) in the hydrolysis and condensation reaction system. After annealing at 480 °C for 1 h, the AMPCs with TBOT concentrations of 0.15 ml/g exhibited excellent comprehensive soft magnetic properties, including the highest quality factor of 104.5 at 560 kHz and lowest core loss of 265 mW/cm 3 at f = 100 kHz and B m = 0.05 T. It also maintained a relatively high permeability of 67 up to 5 MHz and superior DC-bias permeability of 68% at a bias field of 100 Oe. This study demonstrated a modified method to develop a novel insulation coating layer to reduce the core loss and improve the magnetic properties of AMPCs.
研究领域:
材料科学
·
磁学
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 6
·065504
·
IF 1.929
Yachao Ma,Daoyuan Yang,Qiao Jiang,Kai Zhu,Huiyu Yuan,Junyan Cui,Lin Yuan
With the fast development of modern intelligent buildings, the demand for a comfortable environment and 'low carbon' technologies, for example, energy-saving buildings, becomes more intense. Thermal insulation coatings as one of the most promising routes to alleviate the energy consumption of buildings attract extensive attention in recent years. In this work, titanium nitride-based organic-inorganic composite films (TiN O/I films) were introduced as the thermal insulation coatings to window glass via blade coating method. Additionally, two different synthesis methods were adopted to prepare the inorganic TiN nanoparticle and its effect on the optical property of the coatings was studied detailedly via the ultraviolet-visible-near-infrared (UV–vis-IR) spectrophotometer and Fourier transform infrared spectrometer characterizations. In addition, the thermal insulation properties of the films were characterized by a system that simulates the natural environment. Various characterizations show that the synthesized TiN O/I films can not only pass through the visible light but also has high reflectance at the mid-infrared range, that is with the functions of solar control and low emission, well satisfying the requirements of the energy-saving coatings for window glass. These results demonstrated the good feasibility of TiN O/I films in thermal insulation coatings, and also provide a direction for the development of more novel thermal insulation materials with large-scale.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Wangchang Li,Xiang Zhou,Yue Kang,Ting Zou,Wanjia Li,Yao Ying,Jing Yu,Jingwu Zheng,Liang Qiao,Juan Li,Shenglei Che
Novel FeSiAl soft magnetic composites (SMCs) with a phosphate insulation coating doped with magnetic NiFe2O4 nanocrystalline particles were prepared. They exhibited high permeability, ultra-low loss, and high thermal stability. The saturation magnetization of the FeSiAl SMC increased, while the coercivity decreased due to the exchange coupling of the magnetic nanocrystalline particles. The total loss of the novel SMC decreased to 139.93 kW/m3 at 100 mT and 100 kHz, which is only one-third of that of common commercially available Sendust composites, while the permeability was up to 62 for the reduced demagnetization field. Furthermore, three-dimensional loss separation was performed based on the nonlinear regression method, and the complex permeability was separately addressed as the domain-wall movement and spin resonance parts. The minimum total loss was ascribed to the significantly reduced hysteresis loss and the slightly reduced eddy current loss, corresponding to the low coercivity (Hc = 0.341 Oe) and high impedance (|Z| = 67.1 MΩ). This was attributed to the improved magnetic properties and resistance of the insulation coating, which was related to the magnetic nanoparticles embedded in the insulation coating. The permeability was mainly derived from the spin resonance due to the complete insulation coating and ultrafine particles. This novel SMC with a phosphate insulation coating doped with magnetic NiFe 2 O 4 nanocrystalline particles provides a high-efficiency, high-frequency, and high-saturation soft magnetic device for switching power supplies, photovoltaic inverter boost inductors, and other applications.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
·
2024
·
IF 2.7
Jianjun He,Caiyuan Huang,Min Pu,Zhonghu Shu,Zihao Duan,Zijing Zeng,Jianwei Li
To prepare a base layer of thermal insulation for the surface of wind turbine blades, we utilized SiO2 aerogel material with a nanoporous structure as the thermal insulation layer of an inorganic composite photothermal de-icing coating. We further investigated the influence of raw material ratio and process on the thermal insulation layer’s performance. By adjusting the process parameters, the microstructure and characteristics of the SiO2 aerogel thermal insulation coating were controlled. Microstructure scanning and EDS analysis were employed to assess the results. The results of the experiment suggest that, as opposed to brush coating, atomized spraying is a better technique for creating SiO2 aerogel thermal insulation coating. The coating possesses excellent mechanical stability and applicability, maintaining a coating wear rate within 5% after 20 wear cycles under a load of 1734 N/m2, and the coating achieves the highest class 0 surface adhesion to the substrate surface. The coating exhibits exceptional heat insulation performance, reaching a temperature of 32.7 °C after five spraying cycles, which is 20.0 ∼ 29.4 °C higher than the surface without producing a complete heat insulation layer. The SiO2 aerogel aqueous slurry has a viscosity of 31.3 ∼ 36.9 mPa∙s, which is capable of forming a uniform membrane surface when sprayed at a 60° angle at 0.95 MPa pressure. Consequently, this paper’s design of photothermal thermal insulation offers strong anti-abrasion and excellent thermal insulation, presenting a new avenue for scientific investigation into coating photothermal de-icing.
研究领域:
材料科学
·
能源工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
·
2018
·
IF 0.912
Pei Hu,Dan Ai,Xiang Jiang,Xinya Zhang
Hollow silica nanospheres (HSNs) were synthesized via sol–gel method followed by calcination, using positively charged polystyrene (PS) as a hard template, and the tetraethoxysilane as precursor. The inner diameter and shell thickness of the HSNs can be expediently controlled by adjusting the particle size of PS and the amount of ammonia, respectively. The average inner diameters of HSNs increased from 153 nm to 255 nm along with the increasing PS particle size from 150 nm to 300 nm. The shell thickness of HSNs decreased from 20 nm to 12 nm with the increasing amount of ammonia from 1.5 mL to 3.0 mL. The structure of HSNs was verified by Fourier-transform infrared, thermogravimetric, scanning electron microscopy, and transmission electron microscopy characterization. The prepared thermal insulation coating comprised of HSNs shows good temperature retention and thermo-insulating properties, which indicate that the as-prepared HSNs are potentially used as an inorganic filler for thermal insulation coating.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 20
·1-13
·
IF 2.8
Xie Linqiang,Ding Jiangtao,Liu Han,Lu Di,Yu Wanchun,Hu Te,Lin Jiayang,Cheng Zhenzhi,Gao Fei,Luo Guangsheng,Zhou Weiping
Soft magnetic composites with enhanced permeability and reduced power loss are urgently needed in the next generation of power electronics and electrical machines. However, traditional insulation techniques suffer from the uneven coating or complex process, which cannot meet these requirements. Here, the feasibility of Ba(OH) 2 as a coating layer of soft magnetic powder is explored. Due to its low melting point, Ba(OH) 2 exhibits good flowability in the molten state, enabling it to evenly coat FeSiAl particles and fill interparticle gaps, thereby forming a uniform, dense insulating layer. This novel coating strategy improves the formability of the magnetic powder cores and optimizes the cores’ soft magnetic performance. Compared with SMPCs without Ba(OH) 2 coating, FeSiAl@Ba(OH) 2 SMPCs have higher magnetic permeability (μ e = 59.5), higher quality factor ( Q max = 127.3), lower high-frequency power loss ( P cv = 2062.9 mW/cm 3 @1 MHz and 50 mT), and good DC bias performance. Our results provide a new approach for the design of insulation coatings for SMPCs, demonstrating significant application potential for high-frequency electronic devices.
研究领域:
材料科学
·
电气工程
·
应用物理学
·
纳米技术
✓ 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）