COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
·
IF 8.9
Zichun Ding,Jianjian Jiao,Yuhang Wang,Runze Liu,Qing Wang,Jianing Guo,Siying Wang,Lishuai Zong,Xigao Jian,Jinyan Wang
Ultra heat-resistant phthalonitrile resin has faced serious challenges of the trade-off between temperature resistance and toughness and seriously affects its application in the field of temperature resistant structural composites. In this work, a kind of oligo (aryl ethers) containing phenyl-s-triazine and pendent amino group (AFT-Ph/PAFT-Ph) were first selected as modifier co-cured with phthalonitrile prepolymers containing a carborane (CEPN) to achieve synergistic improvement in toughness and heat resistance performance. The flexural and impact strengths of optimized composites reach 278.6 MPa and 58.4 kJ/m 2 , which are increased by 92.7 % and 1091.8 % compared to the blank contrast. The glass transition temperature ( T g ) remained consistent with that of the blank control group, both exceeding 550 ℃. Furthermore, the T d5% –N 2 shows a marginal increase from 706 ℃ in the blank contrast to 713 ℃ in the modified material. Simultaneously conducting research on the mechanism of collaborative improvement mentioned above.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Biochar
·
2025
·Vol. 7
·期 1
·1-19
·
IF 13.5
Zhao Zilong,Zhu Shuting,Qi Shuyu,Zhou Ting,Yang Yang,Wang Feng,Han Qi,Dong Wenyi,Wang Hongjie,Sun Feiyun
This study explores a novel approach to biochar modification aimed at increasing persistent free radical (PFR) formation on biochar surfaces, thereby enhancing aniline removal via peroxymonosulfate (PMS) activation. By adjusting pyrolysis temperatures and doping ratios, optimal conditions were established. Spearman's analysis highlighted the importance of C=C bonds, the I D /I G ratio, and pyridinic N in generating PFRs. The modified biochar derived at 500 ℃ (MB500), in conjunction with the PMS system demonstrated impressive efficiency, achieving 92% aniline removal within 30 min. Detailed adsorption tests and active species detection indicated that aniline degradation occurred through both direct oxidation by PFRs and indirect oxidation by reactive species, particularly superoxide radicals (O₂⋅⁻). Furthermore, the synergistic effects of heteroatom nitrogen and Na 2 CO 3 modifications significantly impacted PFR formation and stability. These findings provide valuable insights into the mechanisms of PFR-mediated catalytic oxidation, highlighting the key roles of pyridinic rings, with or without oxygenated groups, in enhancing catalytic performance of biochar. This research advances the understanding of biochar surface chemistry and presents an effective strategy for developing high-performance biochar-based catalysts for environmental remediation, addressing the limitations of unmodified biochar through targeted surface modifications. Graphical
研究领域:
环境科学
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材料化学
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DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
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IF 7.4
Bing Yin,Zhihao Lin,Tongran Li,Dongmei Qi,Pan Wang,Kailu Han,Dongshuai Hou
Cement-based materials with excellent mechanical properties are in high demand in the civil engineering. This work utilized an innovative in-situ copolymerization approach for synergistic modification of cement-based materials. Vinyl hybrid silica microspheres (VSM) were synthesized through the sol-gel method. Subsequently, With the assistance of initiators and cross-linking agents, the VSM and acrylamide (AM) in-situ copolymerization and were uniformly dispersed in the cement matrix, leading to the successful development of a modified cement-based material. The copolymerization of VSM and AM resulted in the creation of a comprehensive three-dimensional hybrid network structure, interconnected by covalent bonds between the constituent components. Experimental results unequivocally demonstrate that the mechanical properties of the composite have undergone remarkable enhancement. Notably, the flexural strength experienced a substantial increase due to the in-situ polymerization of AM. Furthermore, the compressive strength was significantly improved, achieving a 21.4 % increase compared to samples modified with 2 wt% AM alone. The enhancement can be attributed to the synergistic effect of the in-situ copolymerization structure and the VSM attached to it. The microspheres not only aided in the development of a robust cement matrix and a higher compactness, but also bolstered the compressive modulus of the flexible polymer chains. Collectively, these factors contributed to an increase in the overall resistance to deformation, comprehensively enhancing the mechanical performance of the material. This study addresses the challenges posed by the loss of compressive strength during in-situ polymerization modification, introduces an innovative methodology aimed at significantly enhancing the mechanical properties of cement-based materials.
研究领域:
土木工程
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材料科学
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2024
·
IF 5.8
Yu Zhang,Xu Shen,Qin Ma,Shuang Mu,Shaoming Dong,Jinshan Yang
The wet oxidation behavior of LPS-SiC ceramics as well as the synergistic modification effect of Al 2 O 3 and Y 2 O 3 as sintering aids are investigated. The results show that SiO 2 oxide scale is transformed to aluminosilicate with the addition of Al 2 O 3 , which can inhibit the crystallization of oxide layer and formation of cracks. The aluminosilicate oxide layers have low k l value close to zero, which can reduce the consumption of protective oxide layer under water-containing atmosphere. Y 2 O 3 are mainly transformed to Y 2 Si 2 O 7 to resist the diffusion of oxidative gas. However, with the increase of sintering aids content, the aluminosilicate layer with excessive viscosity limits the emission of gas generated by oxidation and causes many bubbles left in oxide scale which provided rapid channel for oxidative gas. Therefore, LPS-SiC with lower content of sintering aids has better oxidation resistance. This work can provide guidance for the component design of SiC-based ceramics and composites.
研究领域:
材料科学
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陶瓷工程
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DOI
高影响因子
Materials Research Express
·
2022
·Vol. 9
·期 2
·025309
·
IF 2.025
Jingdan Zhang,Yongqing Zhai
To improve the application performance of organic montmorillonite (OMt) and meet the OMt performance requirements of different fields, herein, we developed a synergistic modification method to prepare cationic–nonionic OMt (CN-Mt) using the emulsifier OP-10 and hexadecyltrimethylammonium chloride (CTAC) as comodifiers. The structure, morphology and properties of CN-Mt, cationic-OMt (C-Mt) and nonionic OMt (N-Mt) were studied by XRD, SEM, DSC, and contact angle and swell index measurements. CN-Mt has a larger layer spacing and thinner lamellae, which are obviously different from those of C-Mt and N-Mt. Moreover, CN-Mt was hydrophobic due to its denser organic surface molecules. The interlayer spacing of CN-Mt is positively related to the amount of modifier, and the amount of OP-10 contributes more to the interlayer spacing than CTAC. When the amounts of OP-10 and CTAC are 1.3 and 0.8 times the Mt cation exchange capacity (CEC), the interlayer spacing of the optimal CN-Mt is 4.49 nm, which is significantly higher than that of C-Mt (4.11 nm) at a 2.9 CEC, N-Mt (4.26 nm) at a 1.7 CEC and CN-Mt (4.20 nm) at a 0.9OP-10 + 1.5CTAC CEC. Benefitting from its structural merits, CN-Mt shows a higher degree of lamella separation, peeling and dispersion than C-Mt and N-Mt, as well as good thermal stability. Moreover, the lipophilicity and expansion of CN-Mt in medium- and low-polarity media are better than those of single-component OMt. Therefore, the structure and properties of CN-Mt can be controlled by adjusting the types and amount of modifier, further meeting the performance requirements of various application fields.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
FIBERS AND POLYMERS
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2025
·
IF 2.3
Chen Kexin,Hu Yinchun,Zhang Yan,Jin Zhibin,Lei Qi,Li Yongcun,Zhou Qiong,Wang Yingying
Aramid fiber/unsaturated polyester resin (AF/UP) composites suffer from weak interfacial adhesion which limits their applications in demanding environment. This study proposes a synergistic modification strategy utilizing polydopamine (PDA) and \(\gamma\) -methacryloxypropyltrimethoxysilane (KH570) which constructs a dual-mechanism interface combining mechanical interlocking and covalent bonding. PDA layer was first formed on AF surface via dopamine (DA) oxidative self-polymerization. KH570 formed covalent bonds with PDA layer to yield KH570–PDA–AF. Multi-scale characterization revealed that PDA and KH570 were successfully grafted on AF surface. KH570–PDA–AF/UP composite achieved an interfacial strength of 35.03 MPa (a 57.4% enhancement) due to copolymerization between KH570 and UP. The tensile strength of KH570–PDA–AF/UP reached 1054.86 MPa (a 47.62% increase) and Young's modulus was 23.64 GPa (a 135.93% enhancement) compared to AF/UP. Dynamic mechanical analysis showed reduced loss modulus above 76 °C which signified optimized interfacial energy dissipation mechanisms. These results manifest that PDA–KH570 synergistic modification strategy effectively optimizes interfacial bonding of AF/UP which offers a novel approach for designing high-performance fiber-reinforced composites with both theoretical innovation and engineering applicability.
研究领域:
材料科学
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聚合物复合材料
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表面改性
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机械工程
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产品关联
DOI
高影响因子
Geoenergy Science and Engineering
·
2023
·
IF 0
Nanjun Lai,Wei Fan,Xiaochen Zhang,Liang Liu,Xuefeng Zhou,Siqi Chen
Shale instability caused by the development of nano-micron-scale fractures, pores, and bedding is always a challenge for drilling complex formations. In this work, two additives (Temperature-sensitive polymer based nano-SiO 2 composite (SNAS) and poly (NVP-TAAC-AMPS) (NTA)) were synthesized. The lower critical solution temperature (LCST) value of SNAS could be controlled by adjusting the monomer ratio. As temperature-sensitive nanocomposites , SNAS has the rheological control of drilling fluid. The effects of SNAS and NTA on shale stability were tested based on analytical approaches, including shale wettability , microporous membrane fluid loss, pressure transmission rate, shale specific surface area, shale pore volume, shale strength, linear swelling percentage and shale cuttings recovery. When the temperature is higher than the LCST value, due to the transition from hydrophilicity to hydrophobicity of SNAS, it not only changes the wetting angle of shale, but also enhances the plugging effect of SNAS. The composite system could form tight plugging layer and hydrophobic region compared with single SNAS, which was more conducive to improve plugging performance of shale. Finally, the synergistic improvement mechanism of shale stability combined with SNAS and NTA were further proposed.
研究领域:
石油工程
·
材料科学
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DOI
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Guoquan Na,Wen-Gang Cui,Hangyan Shi,Zhenglong Li,Fan Gao,Yong Gao,Xingqiang Wang,Ke Wang,Yaxiong Yang,Zichao Shen,Yanxia Liu,Hongge Pan
Lithium borohydride (LiBH 4 ) is a promising high-density hydrogen storage material, but its practical application is hindered by high dehydrogenation temperatures, slow kinetics, and poor stability. Catalytic modification is an effective strategy to overcome these limitations. In this work, a LiBH 4 -based composite co-modified with 20 wt% Ni and 10 wt% BN (denoted as LiBH 4 @20Ni10BN) was synthesized via one-step ball milling. The LiBH 4 @20Ni10BN begins to dehydrogenate at 230 °C and releases 7.1 wt% H 2 at 350 °C. Moreover, it rapidly desorbs 4.9 wt% H 2 within 60 min at 320 °C. The performance improvement is attributed to the synergistic catalysis of Ni and BN, where BN weakens the B–H bonds and Ni in situ transforms into the highly active NiB 2 during the first dehydrogenation. The stable BN and newly formed NiB 2 collectively contribute to superior cycling stability, maintaining a reversible capacity of 4.0 wt% after eight cycles.
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DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yanmin Qin,Shihao Zhao,Haoda Wu,Chenxu Sun,Jing Xu,Ming Yang,Ruidan Shi,Haifeng Bao
Transition metal sulfides such as FeS are promising anode materials for lithium-ion batteries (LIBs) due to their high theoretical capacity and natural abundance. However, their practical application is hindered by poor electronic conductivity, severe volume expansion, and irreversible structural degradation. To overcome these limitations, we report a dual-regulation strategy that integrates Mn doping and nitrogen-doped carbon (NC) coating to synergistically enhance both the lattice structure and interface characteristics of FeS. The resulting Mn-FeS/NC composite exhibits anisotropic lattice expansion, with the (102) crystal plane spacing increasing from 0.209 nm to 0.263 nm. Density functional theory (DFT) calculations reveal that Mn doping significantly lowers the Li + insertion/extraction energy barrier. Meanwhile, the NC coating forms a highly conductive and flexible network that buffers volume changes and enhances interfacial stability. Benefiting from this multiscale synergy, Mn-FeS/NC delivers a high initial discharge capacity of 1660.4 mAh g −1 at 0.1 A g −1 with an initial Coulombic efficiency of 75.8 %, and maintains 728.9 mAh g −1 after 600 cycles at 1.0 A g −1 . Even at 5.0 A g −1 , a capacity of 413.6 mAh g −1 is retained. Kinetic analysis confirms a dominant pseudocapacitive behaviour, contributing up to 72.3 % at high scan rates. This study not only provides quantitative insight into the synergistic effect of Mn doping and NC encapsulation, but also offers a viable design strategy for high-performance metal sulfide anodes in next-generation LIBs.
研究领域:
储能
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材料科学
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电化学
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纳米技术
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电池技术
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2025
·
IF 2
Liu Shuai,Liu Fang,Guan Liandi,Zhang Jianwei
BF is a promising reinforcing material for resin matrix composites. Still, it fails to fully utilize its excellent mechanical and functional properties due to the weak interfacial bonding between BF and the resin matrix. In this work, the fibers were treated by acid and alkali synergistically with nano-infiltrant (containing nano-SiO 2 ) to improve the inertness of the fiber surface and enhance the interfacial bonding. Then, BFFC was prepared by hand-coating bisphenol F epoxy resin on the surface of BFF. The microstructure, mechanical properties, durability, thermal stability, and sound absorption properties of the composites were investigated. The results showed that the acid and alkali synergistic nano-infiltrant-modified BF surfaces showed excellent interfacial bonding with increased roughness and reactive groups, which effectively revised the bonding strength between BF and the resin matrix. In particular, the tensile strength, durability, and thermal stability of the composites with alkali synergistic nano-infiltrant were revised by 59.8%, 45.9%, and 48.1%, respectively, compared with the untreated samples, and the structure of the composites was also optimized to enhance the sound-absorbing performance, reaching an average sound absorption coefficient of 0.49. In future, it can promote the development of BF composites toward multi-functionalization.
研究领域:
材料科学
·
复合材料学
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表面改性
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功能材料
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声学材料
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产品关联
DOI
高影响因子
Processes
·
2025
·Vol. 13
·期 8
·2427
·
IF 2.8
Guowei Zhou,Xin Zhang,Weijun Yan,Zhengsong Qiu
Natural polymer materials are increasingly utilized in drilling fluid additives. Starch has come to be applied extensively due to its low cost and favorable fluid loss reduction properties. However, its poor temperature resistance and high viscosity limit its application in high-temperature wells. This study innovatively introduces for the first time diatomite as an inorganic material in the modification process of starch-based fluid loss additives. Through synergistic modification with acrylamide and acrylic acid, we successfully resolved the longstanding challenge of balancing temperature resistance with viscosity control in existing modification methods. The newly developed fluid loss additive demonstrates remarkable performance: It remains effective at 160 °C when used independently. When added to a 4% sodium bentonite base mud, it achieves an 80% fluid loss reduction rate—significantly higher than the 18.95% observed in conventional starch-based products. The resultant filter cake exhibits thin and compact characteristics. Moreover, this additive shows superior contamination resistance, tolerating 30% NaCl and 0.6% calcium contamination, outperforming other starch-based treatments. With starch content exceeding 75%, the product not only demonstrates enhanced performance but also achieves significant cost reduction compared to conventional starch products (typically containing < 50% starch content).
研究领域:
石油工程
·
高分子材料科学
·
钻井液技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）