JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2023
·Vol. 32
·期 23
·10626-10636
·
IF 2.3
Zhao Santuan,Xing Donghua,Zhen Kai,Niu Zhongpei,Li Guangda
The wetting and spreading of glass binders on silver have an important influence on the properties of conductive silver paste. Therefore, it is necessary to consider the wettability between glass binder and silver when designing conductive silver paste. In the present work, the wettability of the Bi 2 O 3 -B 2 O 3 (-ZnO)/silver system was studied in detail. A high temperature contact angle measuring instrument was used to study the dynamic contact angles of different glass/silver systems. After the wetting test, the microstructure of the surface and cross section of the droplet/substrate was studied. In addition to the bulk liquid usually observed, the precursor membrane was observed near the triphase line. The wetting and spreading of glass melt are mainly controlled by the viscosity of glass melt and the blocking effect of the triphase line. In the process of heating up, the wetting process of glass/silver system can be divided into three stages: incubation stage, temporary equilibrium stage, and rapid spreading stage. The content of zinc oxide has a great influence on the wetting behavior of Bi 2 O 3 -B 2 O 3 (-ZnO)/silver systems.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Bo Wang,Ziyan Zhao,Zihao Pan,Xuejian Liu,Zhengren Huang,Yan Liu
The ZnO–Al 2 O 3 –B 2 O 3 –SiO 2 (ZABS) glass powder was designed and innovatively employed to join AlN ceramics. The crystallization, thermal expansion and wettability behavior of the ZABS glass and glass-ceramic were investigated. The results shows that Zn 3 B 2 O 6 , ZnSiO 4 and Zn 4 B 6 O 13 were precipitated after heat treatments at different temperature, respectively, resulting in a variation in the coefficient of thermal expansion (CTE) of the ZABS glass ceramic. Then guided by the wetting behavior on the AlN ceramic substrate, the joining of the AlN ceramics by ZABS glass at various temperatures and holding times were conducted. Notably, Zn 3 B 2 O 6 was identified to be the primary product in the joints bonded at temperature of 700–800 °C due to the crystallization within the glass and no discernible reaction was observed between the substrate and the interlayer, while ZnSiO 4 was observed at the periphery of Zn 3 B 2 O 6 after 750 °C. Moreover, the crystalline phase Zn 3 B 2 O 6 gradually grew with the temperature and holding time increasing as the glassy phase gradually diminished, resulting in a reduction of the strength and reliability of the joints. The optimal flexural strength of the joints was 156 ± 11MPa at 700 °C for 30min. The reason for the high strength can be attributed to the interactions between the glass precipitated crystalline phase interlocking each other and the glass phase tightly bonded with the crystalline phase.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2016
·
IF 3.993
Haihua Zhou,Rui Chang,Elsa Reichmanis,Yanlin Song
The resolution of inkjet printing technology is determined by wetting and evaporation processes after the jet drop contacts the substrate. Here, the wetting of different picoliter solubilized polymer droplets jetting onto one-end-closed porous alumina was investigated. The selected polymers are commonly used in inkjet ink. The synergistic effects of the hierarchical structure and substrate surface modification were used to control the behavior of polymer-based ink drops. A model that invokes the effect of surface tension was applied to calculate the amount of polymer solution penetrating into the pores. The calculation corroborates experimental observations and shows that the volume of polymer solution in the pores increases with an increase in pore radius and depth, resulting in less solution remaining on the substrate surface. The structure of the porous substrate coupled with intrinsic polymer properties and surface modifications all contribute to the resolution that can be achieved via inkjet printing.
研究领域:
材料科学
·
化学工程
·
表面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2023
·
IF 9.9
Rongchao Wang,Hao Zhang,Liang Zhu,Lin Chen,Wucheng Ma,Longjie Jiang,Yue Zhu,Bin Wu,Wei Zhang
Membrane distillation (MD) with the application of omniphobic membranes shows much promise for desalinating saline wastewater containing low surface tension contaminants. However, the complicated membrane production steps and the wetting of the membranes have hindered its industrial application. This study reported a simple and highly efficient air spraying strategy to fabricate an omniphobic membrane by spraying a coating solution comprising fluorinated multi-walled carbon nanotubes (F-MWCNTs) onto a commercial polytetrafluoroethylene (PTFE) membrane. The contact angles for water and hexadecane on the surface reached 173.0° and 161.2°, and the water flux remained stable for 12 h when tested in DCMD with low surface tension fluids (SDS and STAC). The omniphobic membrane showed higher wetting resistance in direct membrane distillation (DCMD) experiments than the PTFE membrane when feeding low surface tension feed solutions. During spraying, F-MWCNTs randomly accumulated, and solvent evaporation resulted in micron-level mounds and surface roughness . The presence of air gaps on the membrane surface prevented the surfactant molecules from directly contacting the membrane surface and enabled the membrane to operate generally in the liquid with surfactant for a long time. The membrane was not only resistant to wetting of liquids containing low surface tension but was also easy to prepare and was expected to be used for large-scale desalination of low surface tension wastewater.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Zilu Li,Zehuan Li,Yuxia Gao,Chenhui Zhang,Kefei Zhao,Yongfei Guo,Zhenping Bao,Tianyue Wu,Xiangdong Li,Fengpei Du
Improving the liquid deposition on plant leaves is crucial during pesticide spraying. However, the hydrophobicity of most plant leaf surfaces makes the droplet splash or run off, finally reducing the efficacy of the foliar-applied pesticide. Though some molecular additives have been employed to regulate the above process, the understanding about the mechanism and the effect of molecular structure is still limited. Herein, cationic surfactants with different double-chain lengths (8–14) are adopted to regulate the droplet impact and wetting on hydrophobic paraffin surface (simulating leaves). With the surfactant chains extending, the capacity for restraining retraction and promoting wetting increases firstly, and then decreases. It can be attributed to that the surfactant with shortest chain cannot form assemblies to inhibit retraction, as the chain length increases, the small-sized micelles reduce but the vesicles become larger and firmer thus the self-assemblies scarcely disaggregate to replenish the monomer at interface during impact. Likewise, short-chain surfactant diffuses faster to interface than long-chain surfactant due to the size effect and hydrophilic/hydrophobic ratio. Our work not only elucidates the mechanism of droplet impact and wetting dynamics by tuning the assemblies aggregation and surfactant diffusion but also promotes the promising application of surfactant in pesticide spraying.
研究领域:
植物学
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农药科学
·
界面化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Longqing He,Zhiwei Luo,Haozhang Liang,Nanshan Ma,Xinzhu Liu,Xiaofeng Wang,Ziyou Zhou,Anxian Lu
Li 2 O–ZnO–B 2 O 3 -WO 3 (LZBW) sealing glasses for Si substrates were prepared and the effect of WO 3 on the structure, thermal properties, and sintering behaviour was investigated. As the WO 3 increases from 0 to 12 mol%, the glass transition temperature and softening temperature reach the lowest values of 448 °C and 479 °C, respectively, at which time the glass network has the lowest degree of polymerization. The thermal expansion coefficient increases from 6.959 × 10 −6 /°C to 8.476 × 10 −6 /°C with increasing WO 3 contents. It is verified that the introduction of WO 3 can effectively improve the conductivity. The sealing property of the glasses was evaluated by the wetting angle of the glasses after co-sintering with Si substrate for 10 min at 860 °C, and the 25Li 2 O-7ZnO-2.7Bi 2 O 3 -1.3P 2 O 5 -55B 2 O 3 -9WO 3 glass had the minimum wetting angle of 34.07°. The excellent thermal properties, conductivity, and wetting behaviour of the LZBW glasses make it a potential material as a binder material for positive silver pastes.
研究领域:
材料科学
·
无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Adham AL-AKHALI,Kaixun NIE,Duoxun FANG,Zhengqiang TANG
Fabricating underwater superoleophobic surfaces is an advanced technique for controlling undesirable oil and wax adhesion on engineering structures and household appliances. This article presented a facile method based on the combination of laser ablation of stainless steel substrates followed by magnetron sputtering of a metallic tungsten target to fabricate superhydrophilic and underwater superoleophobic surfaces. The results showed that the laser-ablated stainless steel substrate without coatings exhibited hydrophilicity and underwater oleophobicity. However, its transition to superhydrophilicity and underwater superoleophobicity with a 0° water contact angle and higher than 156° underwater oil contact angles occurred after the deposition of a thin tungsten film followed by annealing at 300 °C. The prepared surface maintained its wetting behavior for more than 4 weeks, even in corrosive aqueous HCl and NaOH solutions. According to the data from SEM and XPS, this distinguished wetting behavior resulted from the presence of the regular microscale texture patterns, abundant hydroxyl content, and low carbon content on the tungsten layer after annealing at 300 °C. Thus, laser ablation combined with magnetron sputtering of tungsten demonstrated effective results in fabricating superhydrophilic and underwater superoleophobic surfaces that are independent of the initial wetting of the substrates.
研究领域:
材料科学
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表面工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Jinhua Wang,Yu Huang,Ke You,Xian Yang,Yongjun Song,Hai Zhu,Fan Xia,Lei Jiang
Precise control of a biological droplet’s adhesive force on a liquid-repellent surface for smart antifouling systems is critical and fundamental to scientific research and industrial applications. Although slippery surfaces with stimuli-responsive wetting behaviors have been reported, challenge still remains in designing responsive biological droplets to achieve controllable adhesion and antifouling property. Here, we developed a thermoresponsive biological droplet adhesion system to precisely control its adhesion on the lubricant-infused slippery surface. Single-stranded DNA (ssDNA) in the biological droplet displays molecular configuration reversible deformation under external thermal stimuli. This property ascribes to the changing amount of exposed hydrophobic moieties of ssDNA, which strongly affects the interfacial hydrophobic interaction with the lubricant. This work may improve the understanding of the principles underlying liquid–lubricant interfacial adhesion, open up opportunities for a new class of antifouling systems, and provide a promising system for controllable manipulation of liquids’ motion in biochips and microreactor devices.
研究领域:
材料科学
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生物物理
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表面化学
·
微流控
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 6
·118030
·
IF 6.2
Wei Wang,Qilin Guo,Zhe Wang,Donald B. Dingwell,Wenjia Song
Molten deposits originating from siliceous debris such as airborne dust, sand, or volcanic ash entrained into the intake air, represent a critical threat to the durability of thermal barrier coatings (TBCs). Such systems are usually approximated experimentally by on calcium-magnesium aluminosilicate melts (CMAS). While extensive studies have elucidated CMAS corrosion from the terrestrial sources listed above, the role of sea salts – ubiquitous in costal environments – remains unclear. Here, we investigate the effect of sea salt from four China sea regions on CMAS corrosion of TBCs. By integrating high-temperature wetting behavior, microstructural analysis and first-principles calculation, we demonstrate that the presence of sea salt accelerates TBC degradation and that its concentration governs its impact on CMAS melt fluidity, spreading, and degradation of TBCs. An optimized CMAS model is proposed to guide future corrosion assessments and design TBCs with improved tolerance to salt-accelerated degradation under coastal service conditions.
研究领域:
材料科学
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陶瓷涂层
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高温腐蚀
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环境退化
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航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Hang-Lin Li,Zhi-Shuo Jiang,Fang Wang,Rong-Gang Zhang,Ren-Yi Sun,Yu-Zhong Wang,Fei Song
Developing nonfluorinated low-surface-energy coatings with robust environmental adaptability is crucial for green and sustainable industrial applications. Despite substantial advances in hierarchical structures and low-surface-energy chemical design strategies, the specific effect of alkyl chain length bearing a tertiary amine group in nonfluorinated low-surface-energy systems on the dynamic wetting behavior and long-term stability of liquid-repellent coatings remains underexplored. Here, the impact of alkyl side-chain length on the dynamic wettability and stability of superhydrophobic coatings is investigated. Three amine-functionalized monomers with varying alkyl side-chain lengths (C3, C6, and C9) are synthesized and grafted onto nanosilica via polymerization to form organic–inorganic hybrid coatings. The results show that increasing the alkyl side-chain length enhances the dynamic antiwetting capability and droplet bouncing behavior. Notably, the coating with the longest alkyl side chain exhibits an ultralow water adhesion of 22 μN, enabling up to eight successive droplet rebounds upon impact due to the “spring-like” behavior of the extended alkyl chain. Moreover, increasing the alkyl side-chain length significantly enhances the water resistance and UV stability of the coatings. The C9-based coating demonstrates satisfactory durability, withstanding 288 h at a 5 cm depth and 192 h at a 25 cm depth of water, while maintaining stable superhydrophobicity even after 672 h of UV exposure. These findings demonstrate the critical role of alkyl side-chain length in regulating dynamic wettability and stability, providing insights for the rational design of durable fluorine-free superhydrophobic coatings for practical applications.
研究领域:
材料科学
·
表面工程
·
高分子化学
·
纳米技术
·
环境适应性
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2018
·
IF 6.603
Fan Zhao,Zhibo Ma,Kang Xiao,Chao Xiang,Hongjie Wang,Xia Huang,Shuai Liang
The further advance of membrane distillation (MD) is hampered due to inadequate membrane durability challenged by wetting-induced performance deterioration . The current study presents a novel approach to fabrication of superhydrophobic polyvinylidene fluoride (PVDF) membranes via construction of hierarchical textures on membrane surfaces based on a nanocasting strategy. Two types of PVDF membranes with different surface textures were prepared, separately using a stainless-steel mesh (SSM) or its negative polydimethylsiloxane (PDMS) template as a fabrication substrate. The obtained membranes were systematically characterized in terms of membrane morphology, wetting behavior, MD performance, and antifouling performance. Consequently, the PDMS-based membrane obtained a plaited surface texture, resulting in a high static contact angle of ~153° and a high sliding angle of >90°. The resultant parahydrophobic membrane surface resembled a petal surface. The SSM-based membrane obtained a wave-like pattern, resulting in a high static contact angle of ~164° and a low sliding angle of ~6.8°. The resultant superhydrophobic membrane surface resembled a lotus leave surface. Moreover, both membranes achieved higher water flux and enhanced antifouling performance with no significant compromise in salt rejection. Particularly, the SSM-based membrane achieved the highest flux and best antifouling performance, suggesting promising applications in various fields.
研究领域:
材料科学
·
膜技术
·
化学工程
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xin Xiao,Zhaokun Yang,Qiuyan Yu,Dongjian Shi,Weifu Dong,Hongji Zhang,Mingqing Chen
Regulating the wettability of photonic crystals (PCs) could manipulate the liquid flow, and thus, multiple response patterns were realized for information storage and sensing devices. In this paper, to realize solvent detection by response patterns with shapes and colors difference, several modified agents were introduced into hollow silica photonic crystals (HSPCs), obtaining the array sensors. The as-prepared array sensors exhibited superior sensitivity and wide detection range for organic solvents , which showed six response patterns in response to different organic solvents wiping due to surface tensions and reflective index difference of solvents. The array sensors could verify cyclohexane and N-hexane by their surface tensions differences, and verify the diiodomethane by reflective index difference with an 83 nm of reflection wavelength shift. Furthermore, information encryption and multilevel decryption were realized on modified HSPCs, different encrypted patterns and words would be revealed by ethanol solutions (5% and 15% concentration) wiping. Overall, based on the above-mentioned properties, this strategy by regulating wetting behaviours of HSPCs would pave a new route for self-reporting sensors fabrication and complex information encryption.
研究领域:
材料科学
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纳米技术
·
光学
·
传感器
·
密码学
✓ 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）