CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Fu-Chen Liu,Bo-Wen Chen,De-Wei Ni,Fei-Yan Cai,Xue-Gang Zou,Chun-Jing Liao,Hong-Da Wang,Yu-Sheng Ding,Shao-Ming Dong
Long-term ablation behavior of Al 4 SiC 4 -YB 4 modified C f /ZrB 2 -SiC composites was characterized by air plasma torch at 2600 °C for 300 s. The phase composition and the microstructure evolution of the composites were investigated. The addition of YB 4 promotes the formation of nano t- Zr 0.92 Y 0.08 O 1.96 crystals, decreasing the phase transition stress in the oxide layer and reducing the volatilization of the glassy phase . However, the addition of Al 4 SiC 4 reduces the melting point of Zr-based oxides and the viscosity of the oxide layer. Therefore, the air plasma torch blows the oxide layer away, leading to the increase of linear recession rate.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2022
·
IF 5.395
Lianshuang Zhao,Jiaoli Hu,Longxuan Gao,Junming Wang,Xiaoyue Ma,Yu Liu,Yuhui Ao,Fei Yan,Liu Liu
The carbon fiber/hydroxyapatite (CF/HA) reinforcement with a three-dimensional flower-like structure was rapidly fabricated with the biomimetic mineralization method to strengthen the interfacial performance and bioactivity of carbon fiber/polyether ether ketone (CF/PEEK) composites. Silk fibroin (SF), which can construct a robust interphase between CF and PEEK, supported an organic template to regulate the growth of inorganic HA. The interfacial properties were markedly enhanced through mechanical interlocking and interface adhesion induced by increasing roughness and surface energy of CF. Besides, the mineralization time was significantly reduced after the addition of cetyltrimethylammonium bromide to the simulated body fluid, and the prepared CF/HA possessed good bioactivity. In this study, the interlaminar shear strength (ILSS) and flexural strength of CF-HA/45/PEEK composites demonstrated an enhancement of 45.9% and 51.2%, respectively, compared to the untreated CF/PEEK composites. It is predicted that this strategy could provide a rapid and convenient route to ameliorate the interfacial performance and bioactivity of CF/PEEK composites simultaneously.
研究领域:
材料科学
·
生物材料工程
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Guojuan Hai,Jing Wang,Wenwen Zhao,Liyun Cao,Jianfeng Huang
Electrocatalytic hydrogen production in neutral electrolytes offers a sustainable pathway toward clean hydrogen, but its development is severely constrained by sluggish reaction kinetics and the lack of high-performance non-noble metal electrocatalysts. Herein, efficient hydrogen production is achieved by integrating heterogeneous structure engineering with iron (Fe) doping, fabricating the Fe-Cu2O/WO3/CF material. Results demonstrate that Fe doping and Cu₂O/WO₃ heterojunction construction exert a synergistic effect in optimizing the catalyst's structural and electronic properties: Fe doping induces lattice distortion, generating abundant oxygen vacancies and coordinatively unsaturated active sites, while the Cu₂O/WO₃ heterojunction accelerates interfacial electron transfer. Electrochemical tests show that Fe-Cu₂O/WO₃/CF exhibits excellent HER activity, requiring overpotentials of 95 mV to achieve current densities of 10 mA·cm⁻² and better long-term stability over 40 hours of continuous operation compared to the undoped counterpart. The significantly enhanced HER performance is comprehensively attributed to the combined contributions of optimized electronic structure, enriched active sites and accelerated charge transfer. Specifically, the cooperative interplay of Cu, Fe, and W with distinct d-band center energies, together with Fe doping-induced electronic modulation, upshifts the d-band center, strengthens the interaction between the catalyst surface and reaction intermediates, and induces the formation of different metal-O bonds for directional electron transfer. Meanwhile, Fe2+ (3d6) in tetrahedral (Cu2O phase) and octahedral (WO3 phase) coordination environments optimizes electron transfer and H* adsorption/desorption behavior via π orbital interactions and electron repulsion with O²-. By exploring the synergistic catalytic activation mechanism of heterojunctions and heteroatom doping, this work provides a theoretical foundation for the rational design of high-efficiency non-noble metal oxide catalysts for neutral water electrolysis.
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Chengce Yuan,Dazhi Li,Xueyu Yuan,Li Liu,Yudong Huang
The inert structure and high molding temperature of thermoplastic resin bring new challenges to carbon fiber (CF) sizing agents. Herein, an easily purified semi-aliphatic polyimide (SA-PI) was synthesized as CF sizing agent. The SA-PI has no significant decomposition before 300 °C and a 5% decomposition temperature of 442 °C. Based on the solubility of its polyamic acid ammonium salt, the SA-PI is configured as an aqueous solution for CF sizing. The results show the surface of sized carbon fiber (SCF) is covered with a sizing coating. At the same time, the polar group of the sizing coating increases the surface energy by 28.45%. Compared with bare CF, the tensile strength of SCF is increased by 11.43%, the ILSS and flexural strength of SCF/PEEK increased from 55.71 MPa and 485.34 MPa to68.98 MPa and 523.33 MPa, respectively. In addition, the micro-morphology at the fracture of the composite clearly proves that the sizing agent improves the interface performance of the composites effectively.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Yujiao Long,Hongna Li,Xuan Xing,Jinren Ni
This study presented a significant enhanced removal of Microcystis aeruginosa by simple addition of Fe 2+ at circumneutral pH in the electrochemical system with boron-doped diamond (BDD) anode and carbon felt (CF) cathode. Results showed that over 99.9% of the M. aeruginosa cells were removed in 60 min when 0.2 mM Fe 2+ was added to the system. The pseudo-first order rate constant for BDD-CF-Fe 2+ system was almost 15 times higher than that (0.005 min −1 ) for BDD-CF system. The excellent performance of the BDD-CF-Fe 2+ system over the BDD-CF system was observed over a wide range of pH from 3 to 9. Based on the evolution of Fe 2+ /Fe 3+ , pH, H 2 O 2 and OH, mechanism of enhanced removal of M. aeruginosa was revealed in the BDD-CF-Fe 2+ system. H 2 O 2 was electrochemically generated through reduction of dissolved oxygen on the surface of the CF cathode, and the added Fe 2+ was rapidly adsorbed and precipitated also on the CF cathode. Comparisons of BDD-CF-Fe 2+ , BDD-CF-Fe 3+ and BDD-CF-Fe 2+ /Fe 3+ systems proved that the electrochemical reduction of Fe(III) to Fe(II) could guarantee the sustainable cycle between Fe(II) and Fe(III). Through heterogeneous electro-Fenton reactions, much higher amount of OH would be continuously generated compared with the BDD-CF system. Thereby, the lipid peroxidation on the cell membrane of M. aeruginosa was intensified through the addition of Fe 2+ . Moreover, the degradation of intracellular microcystin was remarkably accelerated, and the extracellular microcystin was controlled more safely due to Fe 2+ addition. This study provided an alternative method to enhance the electrochemical mitigation of cyanobacteria-polluted waters.
研究领域:
环境科学
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微生物学
·
水处理技术
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Yumin An,Kun Wan,Yi Yang,Yongna Jia,Yehong Cheng
Herein, biomimetic C f /ZrB 2 -SiC ceramic composites with bouligand structures are fabricated by combining precursor impregnation, coating, helical assembly and hot-pressing sintering. First, C f /ZrB 2 -SiC ceramic films are achieved through a precursor impregnation method using polycarbosilane (PCS). Second, the PCS-C f /ZrB 2 -SiC ceramic films are coated with ZrB 2 and SiC ceramic layers. Finally, hot-pressing sintering is employed to densify helical assembly C f /ceramic films with a fixed angle of 30°. The microstructures and carbon fiber content on the mechanical properties of biomimetic C f /ZrB 2 -SiC ceramic composites are analyzed in detail. The results show that the coated ceramic layer on PCS-C f /ZrB 2 -SiC films can heal the cracks formed by pyrolysis of PCS, and the mechanical properties are obviously improved. Meanwhile, the mechanical properties could be tuned by the contents of the carbon fiber. The toughening mechanisms of C f /ZrB 2 -SiC ceramic composites with bouligand structures are mainly zigzag cracks, crack deflection, multiple cracks, carbon fiber pulling out and bridging.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 17
·5983
·
IF 3.4
Tingyu Zhao,Zhengxiang Zhong,Xuanfeng Zhang,Jiangfeng Liu,Wenfang Wang,Bing Wang,Li Liu
The development of high-temperature organic adhesive for bonding ultra-high-temperature ceramics with excellent thermal shock resistance has important significance to thermal protection systems for high-temperature environment application. In this study, high-temperature organic adhesive (HTOA) with carbon-fiber-SiC nanowires (CF-SiCNWs) binary phase enhancement structure was prepared. The method is that the SiCNWs grow on the chopped carbon-fiber surface and in the matrix of modified HTOA during high-temperature heat treatment with the help of a catalyst by a tip-growth way and with a vapor–liquid–solid (V-L-S) growth pattern. The results showed that the CF-SiCNWs binary phase enhancement structure plays a significant role in improving thermal shock resistance of high-temperature organic adhesive. The retention rate of the joint bond strength for the bonding samples after 20 cycles of thermal shock testing reaches 39.19%, which is higher than for the ones without CF, whose retain rate is only 6.78%. The shear strength of the samples with the CF-SiCNWs binary phase enhancement structure was about 10% higher than for those without the enhancement structure after 20 cycles of thermal shock.Keywords:adhesive;thermal shock resistance;ultra-high-temperature ceramics
研究领域:
材料科学
·
胶粘技术
·
高温材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD ENGINEERING
·
2014
·
IF 2.576
Zhi-Wei Liu,Xin-An Zeng,Da-Wen Sun,Zhong Han,Rana Muhammad Aadil
The permeability change of vesicles composed of soya phosphatidylcholine (PC) and dipalmitoyl phosphatidylcholine (DPPC) encapsulated with 5(6)-carboxyfluorescein (CF) suspended in isotonic sucrose solution under separate or combined thermal and continuous pulsed electric field (PEF) treatments was investigated, respectively. The electric field intensity applied was in the range from 20 to 40 kV/cm with total treatment time of 1.2 ms, and thermal treatments were conducted at temperatures from 15 to 65 °C. Results indicated that the permeability behavior between DPPC vesicles and soya PC vesicles were quite different under the experimental conditions. Compared to soya PC vesicles, DPPC vesicles were more sensitive to thermal treatments. As the temperature increased to 41 °C, the 5(6)-CF release percentage (R) reached almost 100% abruptly. On the other hand, the synergetic effects of PEF and temperature on permeability of two vesicles were apparently different. For soya PC vesicles, the increment degree of R value was almost the same under various combination treatment conditions. However, for DPPC vesicles, it was demonstrated that the lipid bilayers membrane was almost impermeable to CF when the PEF strength was lower than 30 kV/cm at 20 °C and 20 kV/cm at 30 °C. As the temperature increased to 38 °C, the permeability of DPPC vesicles was significantly increased with increasing PEF intensity, reaching 25.25% at 40 kV/cm. Results from the current study could be helpful for better understanding of the underlying mechanism on PEF inactivation as affected by the lipid composition of cell membrane and its phase transition temperature.
研究领域:
生物物理学
·
膜生物技术
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 48
·22860-22868
·
IF 3.591
YiFan Chen,Lei Ding,Chao Cui,Zhengxiang Zhong,Li Liu,Yudong Huang
A simple method to prepare an emulsifier was proposed to form a stable nano size emulsion as a sizing agent to enhance the interfacial bonding strength between carbon fiber (CF) and epoxy resin. The toluene diisocyanate (TDI) grafting strategy can effectively introduce hydrophilic polyethylene glycol (PEG) and hydrophobic poly(propylene glycol) (PPG) into the side chain of the epoxy resin without consuming epoxy groups. The PPG chain segment length was controlled to improve the stability of the emulsion. An emulsion prepared with EP–PEG6000–PPG2000 (EE-P20) as the emulsifier had the highest stability, and could be placed for more than 6 months without changes in the droplet size. The wettability of CF modified by this sizing agent was obviously improved, and the interfacial shear strength (IFSS) and interlaminar shear strength (ILSS) of CF(EE-P20) were increased by 42.33% and 17.41%, respectively. It was worth noting that the moisture absorption of CF(EE-P20) was 3.12% at 90% relative humidity. The introduction of the PPG segment not only improved the storage stability of the emulsion, but also improved the moisture resistance of CF after sizing. This simple continuous grafting method provides a new idea for adjusting the structure of the epoxy sizing agent, and the obtained emulsifier has a wide application prospect in the field of the CF sizing agent.
研究领域:
材料科学
·
复合材料
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Yuchen Tong,Zhufeng Hu,Min Wang,Chao Yang,Junbo Xu
In the present study, CF-ZrO 2 /ZrC composites with controllable coating thickness were prepared by an in-situ sol-gel method. Through pretreatment , the carbon fibers surface changed from hydrophobic to hydrophilic and the polar groups on the surface significantly increased, which increased the interface affinity and ensured the stabilities of uniform ZrO 2 /ZrC coatings preparation. The coating layer increases the thickness of the composites, prolonged the mass and heat transfer on the composites surface. The dense ZrO 2 /ZrC coating prevents further oxidation of internal C by oxidative gas. As a result, after 4 cycles sol-gel, the mass ablation rate of the composite is decreased from 0.046 to 0.022 mg s −1 , under the butane flame for 120s. And the thermal decomposition temperatures are 10.8%–15% higher than those of the original carbon fiber. Thus, this in-situ sol-gel method is a feasible for preparing carbon fiber self-reinforced composites with uniform coating and designable structure, which can effectively improve the ablative resistance ability and thermal decomposition temperature of composites.
研究领域:
材料科学
·
陶瓷复合材料
·
抗烧蚀性能
·
溶胶-凝胶工艺
·
表面改性
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2016
·
IF 2.933
Xiaowu Chen,Shaoming Dong,Yanmei Kan,Haijun Zhou,Jianbao Hu,Dengke Wang
Three-dimensional (3D) C f /SiC-ZrC-ZrB 2 composites were successfully fabricated by sol-gel process combined with reactive melt infiltration (RMI) method. With H 3 BO 3 and PVA as raw materials for gel precursor, a porous C-B 4 C matrix was first introduced into the 3D carbon fiber preform by impregnation of the gel precursor, followed by heat-treatments of pyrolysis and carbothermal processes at 1500 °C in Ar atmosphere . Then molten ZrSi 2 alloys were infiltrated into the 3D C f /C-B 4 C preform to obtain 3D C f /SiC-ZrC-ZrB 2 composites. Based on thermodynamic analysis , the formation mechanism of SiC-ZrC-ZrB 2 matrix was revealed. Oxidation resistance and ablation resistance properties of the fabricated 3D C f /SiC-ZrC-ZrB 2 composites were tested using a muffle furnace and a plasma wind tunnel equipment, respectively. The flexural strength of the as prepared composites and its strength retention after oxidation were evaluated. It is revealed that the 3D C f /SiC-ZrC-ZrB 2 composites showed superior flexural strength , good oxidation resistance and excellent anti-ablation properties.
研究领域:
材料科学
·
陶瓷基复合材料
·
高温材料
·
航空航天工程
✓ 已验证
DOI
高影响因子
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
·
2025
·
IF 2.2
Songxue Chen,Yong Li,Yue Jin,Zehui Hu,Yinuo Jiang,Bing Han
This study improves weak interlaminar properties of carbon fiber-reinforced PMMA (CF/PMMA) laminates by incorporating calcium sulfate whisker (CSW)/PMMA interleaf films. Compared to direct whisker sprinkling, the film method enables uniform CSW dispersion and stabilization in the matrix. ILSS and IFSS tests revealed that 6 wt% CSW content optimized performance: ILSS reached 51.8 MPa (46.9% increase vs 35.3 MPa control) and IFSS achieved 40.2 MPa (83.1% increase vs 21.9 MPa control). Excessive CSW (>6 wt%) caused agglomeration, reducing ILSS and IFSS—particularly IFSS due to interfacial defects. Microscopic analysis demonstrated that CSW enhances interlaminar strength through crack deflection, pinning, matrix pull-out, and fracture mechanisms, while improving interfacial adhesion via mechanical anchoring with carbon fibers. The film-introduction strategy effectively enhances the interlaminar shear strength and overall quality stability of CFRP laminates, while establishing a research foundation for interfacial optimization in CSW-reinforced composites.
研究领域:
材料科学
·
复合材料
·
聚合物基复合材料
·
力学性能
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）