JOURNAL OF PHYSICS D-APPLIED PHYSICS
·
2025
·
IF 3.2
Yunqi Xing,Xu Guo,Fanrong Kong,Kaulya Pathiraja,Yuhuai Wang,Jin Li
To investigate how the presence of interface state impacts the DC breakdown at the interface at the terminations of a submarine DC cable, the cross-linked polyethylene (XLPE) and ethylene-propylene-diene terpolymer (EPDM) double-layer samples with two different interface states of direct contact and coating normal silicone oil were prepared. Various temperatures and pressures were controlled to simulate the actual operating environment. The effects of pressure and temperature on the DC Interfacial breakdown characteristics were analysed. The characteristics of interface charge accumulation and dissipation were studied with different polar voltages stressing. The effects of silicone oil on the interface charge characteristics were discussed by vertical preloading and interface breakdown tests. Results show that the breakdown voltage of the interface coated with silicone oil is much higher than that of the interface without silicone oil. After coating silicone oil, the trap energy level and trap density of the interface decrease, the interface accumulated charge density decreases, and the interface residual charge decays faster. In addition, when the polarity of the residual charge at the interface aligns with that of the needle electrode in terms of consistency, the interface breakdown voltage increases, and vice versa. This paper provides a theoretical basis and innovative insights for the subsequent selection and improvement of silicone fluids to enhance interfacial breakdown performance.
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
Particuology
·
2020
·
IF 2.787
Zhou Lan,Yangcheng Lu
In this work, we used the inert substances silicone oil and n -hexane to modulate the solvent environment, and in so doing tailor the preparation of magnesium ethoxide (Mg(OEt) 2 ) particles. We found the following: (1) nonpolar n -hexane mainly modulates the polarity of the solvent to control the precipitation rate and size of the Mg(OEt) 2 seeds, thereby triggering accelerated nucleation to form small primary particles; and (2) silicone oil (relatively high polarity and viscosity) facilitates the growth and agglomeration stage, to improve inter-particle dispersion and obtain relatively uniform Mg(OEt) 2 particles. We summarized these findings in a common mechanism for preparing Mg(OEt) 2 particles with uniform morphology, small size, and high bulk density as per the synergistic effect of n -hexane and silicone oil. The ratios of silicone oil and n -hexane are flexible, and afford various regular and well-dispersed Mg(OEt) 2 particles that are 5–30 μm in size and 0.2–0.7 g/cm 3 in bulk density. The nanoparticles thus have the potential to serve in diverse applications such as catalysis.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Jianhui Yuan,Qingshan Gu,Guangzhi Zheng,Jin Yang,Wenjie Zhao,Yangmin Wu
With the increasingly strict requirements for marine environmental protection, the demand for antifouling coatings that can replace organotin is becoming more urgent. Here, environmentally friendly lubricants were infused into porous surfaces to obtain antifouling coating. The stability of the coating was evaluated by the contact angle and sliding angle tests. The antifouling performance was intuitively represented by the adhesion quantity of three marine algae. The adhesion experiment showed that a lubricating oil of suitable viscosity balanced stability and lubricity, so that the silicone oil (PMX200-100)-infused surface showed the best antifouling effect. However, it was covered by Navicula exigua (N. exigua) after a long time of immersion. In our work, the grease-infused surface displayed outstanding stability in water. In addition, the grease-infused porous surface showed another state of algae attachment after a period of immersion in algae solution. Algae adhered to the surface and congregated to form a layer of biofilm , but it could be easily removed and re-expose the new grease-infused surface. The requirement of lubricating grease for porous surface structures is not as high as that of lubricating oil. The grease-infused surface has a long-term circulation antifouling effect on algae.
研究领域:
海洋生物学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Peihua Zhang,Runpeng Jiang,Boyuan Li,Aoxun Liang,Xueye Chen,Xiaoxiao Chu
Superhydrophobic surfaces have broad application prospects in droplet transport, sensors, microfluidics and other fields. However, most of the superhydrophobic surfaces are manufactured on rigid substrates or flexible substrates with low deformation. When deformation occurs, the superhydrophobic properties are difficult to be guaranteed, which hinders the practical application of superhydrophobic surfaces. Using a mixture of prepolymer A, crosslinking agent B and dimethylsilicone oil as raw materials, PDMS/dimethylsilicone oil superhydrophobic high tensile film (Pdoshtf) is prepared by simple template and low surface energy treatment. The prepared Pdoshtf shows excellent tensile property and superhydrophobic stability, the tensile ratio at break is 300 %, and the excellent superhydrophobic property can be maintained after 250 % stretching. In addition, droplet falling on the Pdoshtf bounces back in time without any residue, showing excellent superhydrophobic properties. Finally, an energy harvesting device composed of Pdoshtf and electromagnetic system is designed and prepared, which can collect the energy of raindrops through droplet drop and rebound.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
·
2021
·
IF 3.186
Xin Huang,Limin He,Xiaoming Luo,Ke Xu,Yuling Lü,Donghai Yang
s The coalescence behaviors of two neutral droplets suspended in silicone oil under the alternating current (AC) and pulsed direct current (DC) electric fields are investigated by experiments and numerical simulations. The distribution evolutions of electric force and velocity field during the droplet coalescence under the AC and pulsed DC electric fields are analyzed. The relationship between electric field excitation and droplet interface response is illustrated. The equivalent response mechanism of droplets under the high-frequency AC and pulsed DC electric fields and under the DC electric fields is revealed. The relationship of droplet dynamic behaviors under the DC electric field and under the AC and pulsed DC electric fields are established. The critical electric field frequencies above which the shortest distance curves no longer change under the AC and pulsed DC electric fields are obtained. These new findings are significant for the optimization of electrostatic coalescence.
研究领域:
物理学
·
流体力学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2014
·
IF 3.552
Lingling Ge,Shuhui Lu,Rong Guo
Janus emulsions of a polymerizable monomer tripropyleneglycol diacrylate (TP) combined with silicone oil (SO) as inner oil phases and Tween 80 aqueous solution as continuous phase are prepared in a one-step high energy mixing process. The dependence of droplet topology on the concentration of surfactant, TP/SO ratio, and the stirring speed during emulsification is investigated. The result shows that the volume ratio of two oils within an individual droplet changes correspondingly to the total composition of emulsion. Increasing the speed of stirring results in a significant reduction in the droplet size, i.e. a five times increase in the stirring speed produces a droplet size reduction from hundreds to a few microns. What is more important, the topology of Janus drops remains similar for the different preparations. These fundamental investigations illustrate the potential for future Janus particle synthesis in batch scale with a controllable particle topology.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 9
·1-17
·
IF 2.8
Zhang Rui,Ma Haihong,Zhou Zhengfa,Xu Weibing,Ren Fengmei
A modified silicone oil containing nitrogen, phosphorus, and sulfur was synthesized by the reaction of n-butyl thiophosphoric triamine (NBPT) and epoxidized silicone oil (ETSO), and named NBSO. The successful synthesis of NBSO was confirmed by Fourier infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (NMR). The flame retardant and smoke suppression properties of NBSO were investigated by open flame ignition method and cone calorimetry test (CCT). The results showed when the molar ratio of NBPT to ETSO was 1:1, the flame height of the modified silicone oil was significantly reduced, and compared with ETSO, the total smoke release (TSR) and the total heat release (THR) of NBSO was reduced by 67.6% and 68%, respectively. Thermogravimetric analysis (TGA), infrared thermogravimetric coupling (TG-IR), thermal field emission scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) techniques were used to analyze the mechanism of flame retardant and smoke inhibition. The results indicate that compared with ETSO. NBSO has a slower thermal decomposition rate and releases less flammable gas.In the condense phase, nitrogen, phosphorus, silicon, and sulfur could improve the carbon forming ability through synergistic effect. At the same time, a silicon oxide layer was formed on the outer surface of the carbon layer, which could increase the flame retardation and smoke suppressing effect.
研究领域:
高分子科学
·
材料工程
·
化学合成
·
消防安全工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Hechun Lin,Pei Tian,Chunhua Luo,Hai Wang,Jungang Zhang,Jianping Yang,Hui Peng
Luminescent nanofluids are successfully prepared by directly dispersing organometal halide perovskite nanocrystals (OHP NCs) with different emission colors in silicone oils. The photoluminescence quantum yields of nanofluids with green, blue and red emission are 47, 32, and 19%, respectively. Furthermore, the nanofluids greatly enhance the stability of OHP NCs and show excellent resistance against moisture, heat and ultraviolet light. The luminescent nanofluids can be used as liquid color converter for LED. By loading them onto silica aerogel, luminescent perovskite powders were achieved. Their applications as phosphor additives for preparing luminescent PMMA composites were demonstrated.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Gaojian Chen,Lingling Ge,Junhao Zhu,Wanhui Xu,Rong Guo
Nano-Janus emulsion possesses excellent solubilization capabilities of both aqueous and organic materials, various liquid–liquid interfaces, and precisely controllable morphology. Successful construction of nano Janus droplets at mild conditions of room temperature and low-energy input will expand the industrial application. Two immiscible liquids of silicone oil (SO) and oleic acid (OA) are used as internal phases, and water is added dropwise at mild temperature. The topology of the nano-sized complex droplets is characterized by cryo-TEM, SAXS, and FF-TEM. Micro structure of lamellar liquid crystal (Lα), which is the critical transition phase, is investigated to reveal the formation mechanism. Topology adjustment including size range, volume ratio, and interface curvature is investigated. Complex nano droplets with snowman shape are successfully constructed in batch-scale at mild temperature of 30 °C and water-dripping rate of 1.0 mL/h. Formation of a four-component Lα phase is the critical point to the successful construction of the nano-Janus emulsion, which also creates additional freedom for structural regulation. The size of the complex droplets is freely alternated in the range of 50–500 nm and the morphology of one lobe is controlled from “crescent” to “half-moon”, and “moon with a hole”.
研究领域:
材料科学
·
界面化学
·
胶体科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Fan Wu,Rishun Li,Anfeng Yao,Zhixin Li,Huiqin An,Hui Ye,Qingping Xin,Yuzhong Zhang,Hong Li,Lizhi Zhao
Liquid-filled porous membranes have been developed for oil-water separation with antifouling properties. However, the degradation of fouling resistance and reduction of separation efficiency may occur due to the poor stability of the liquid layer. Prompted by the mesoporous structure and high porosity characteristics of aerogel , the membrane with aerogel-network-stabilized slippery surfaces was fabricated by in situ growth of silica aerogel coating on the polyethylene terephthalate (PET) fiber membrane and silicone oil filling. Owing to the oil-locking ability of the aerogel coating, the liquid layer of the membrane showed excellent stability against chemical corrosion and high-temperature, improved stability against shear and mechanical abrasion , and good hot water tolerance and self-healing performance. The prepared liquid-filled membrane can efficiently separate water-in-oil emulsion. In filtrating-cleaning cycles, the membrane showed antifouling property and durability with high separation efficiency and flux recovery. The membranes with highly stable liquid-filled surface provide promising prospects in industrial oil treatment and oil spill recovery.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Xiangli Wen,Jingbo Fang,Pengpeng Bai,Yuanzhe Li,Yonggang Meng,Liran Ma,Yu Tian
Conventional methyl silicone oils have poor lubricating properties in boundary lubrication regions, particularly for ceramic/oxide point contact lubrication. In this study, the residues of various organic solvents on the surfaces of Si3N4 spheres/glass disks were used to determine their effect on the lubricating properties of silicone oil 200. The minute ethanol residues significantly enhanced the antifriction and antiwear properties of silicone oil. Compared to the blank sample, the coefficient of friction (COF) and wear volume of silicone oil 200 with the residual ethanol friction pair were reduced by >40% and >98%, respectively. Being immiscible with silicone oil, the minute ethanol residues also removed impurities from the glass surface and maintained a clean interface, thus effectively blocking direct interactions between the friction pair interfaces. In addition, the residual ethanol reduced the atomic force microscope probe-to-glass surface adhesive force in the silicone oil 200 environment, thus allowing it to maintain low COF and wear rates over a broader range of speeds, loads, and times. In contrast to previous work, this study is the first to effectively regulate the lubrication properties of silicone oil using a residual organic solvent. The findings further verified that the adsorption of vapor molecules can significantly alter the surface forces between interfaces. Thus, adjusting the adhesion force through trace amounts of organic solvent residues may provide novel research inputs, thereby guiding the expansion and scope of silicone oil lubrication applications.
研究领域:
材料科学
·
润滑工程
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Guanwu Yin,Xiaoyue Yang,Quanbo Xu,Xiaofan Chen,Haiyan Wang
Antibacterial cotton fabric has attracted significant attention due to its widespread applications in clinical and medical supplies. However, many of these fabrics suffer from inadequate antibacterial durability and biocompatibility, which not only limit their practical application but also pose potential risks to human health. Herein, a series of aminoethylaminopropyl polydimethylsiloxane (AEAPS) with various amino acids were successfully synthesized, then the corresponding silicone oil emulsions were obtained via phase inversion emulsification and a durable and biocompatible antibacterial cotton fabric was achieved. The influence of various amino acid residues on antibacterial efficacy was investigated and L-Tryptophan (Trp) graft silicone oil (L-Trp-AEAPS) exhibits the best antibacterial performance. In addition, the resulting antibacterial cotton fabric (L-Trp-AEAPS-CF) shows good antibacterial activity against E. coli and S. aureus , excellent biocompatibility, and low toxicity owing to the amino acid residue. Finally, after 50 laundering cycles, the L-Trp-AEAPS-CF retained an antibacterial efficiency exceeding 98 %, indicating excellent washing durability. The L-Trp-AEAPS-CF with antibacterial durability and biocompatibility exhibited broad application prospects in biomedical materials.
研究领域:
材料科学
·
生物学
·
医学
✓ 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）