CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Hongyang Lian,Peisheng Li,Yantao Xu,Xiaochun Zhang
Bamboo is a sustainable, functional and rapidly growing natural material with excellent potential in sustainable building and industrial applications. However, as a structural material, bamboo is hindered by its low mechanical strength and poor mildew resistance. In this study, a simple and sustainable process was developed to partially remove lignin and hemicellulose from bamboo through alkaline pretreatment , combined with thermal mechanical compaction, to convert natural bamboo into a lightweight, high-strength, mildew resistant, and durable multifunctional structural material. The results showed that the comprehensive control effectiveness of the alkaline dense bamboo against Aspergillus niger , Penicillium citricola and Trichoderma viridis was 96.2%, the anti-mildew performance was significantly improved. Compared with natural bamboo, the flexural, tensile, and compressive strength of alkaline dense bamboo increased by 6.9 times, 2.5 times, and 4.6 times, respectively, reaching 578 MPa, 410 MPa, and 145 MPa. Compared with some synthetic structural materials with excellent mechanical properties, the alkaline dense bamboo also exhibited superior specific tensile strength and Shore hardness . The multifunctional alkaline dense bamboo prepared in this study provides the possibility for bamboo resources to be widely used in the field of structural engineering.
研究领域:
材料科学
·
林业工程
·
可持续发展
✓ 已验证
DOI
高影响因子
Advanced Membranes
·
2025
·
IF 9.5
Qilian Li,Bin Lin,Wei Wei,Zhaoxiang Zhong,Weihong Xing
Silicon carbide (SiC) ceramic membranes are promising for high-temperature gas filtration due to their excellent thermal and chemical stability. However, the industrial deployment of conventional SiC ceramic membranes is limited by their low bending strength and high fabrication cost. This study pioneers a sustainable strategy utilizing industrial waste activated coke fly ash (ACFA), as a dual-functional sintering aid and pore-forming agent for the fabrication of high-performance SiC supports. By systematically investigating the sintering kinetics and phase evolution mechanism of the ACFA-aided SiC supports, we established a composition-property relationship that reveals the critical role of ACFA-derived mineral phases in simultaneously enhancing mechanical integrity and filtration performance. With 12 wt.% ACFA sintered at 1400 °C the SiC support achieved optimal bending strength (28.6 MPa). This bending strength was approximately 25% higher than that of conventional SiC supports (22.8 MPa). Moreover, the ACFA-aided SiC support exhibited satisfactory thermal shock resistance and corrosion resistance during 20 cycles of thermal shocking and alkali metal corrosion tests. This work provides a sustainable route for fabricating cost-effective SiC supports with enhanced mechanical strength to broaden their applications in industrial hot gas filtration.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 13
·4549
·
IF 3.4
Chuiyuan Kong,Bin Zhou,Rongxin Guo,Feng Yan,Rui Wang,Changxi Tang
Based on the physical and chemical properties of red sandstone (RS), RS is used to produce composite cementitious materials. The flowability, mechanical strength, and micromechanics of a red sandstone–cement binary cementitious material (RS-OPC) were investigated as functions of the amount of RS replacing the cement (OPC). Additionally, the feasibility of producing red sandstone–phosphogypsum–cement composite materials (RS-PG-OPC) using the phosphogypsum (PG)- enhanced volcanic ash activity of RS was investigated. The products of hydration and microstructures of RS-OPC and RS-PG-OPC were analyzed by XRD, FTIR, TG-DTG, and SEM. RS enhanced the flowability of RS-OPC relative to the unmodified cement slurry but lowered its mechanical strength, according to the experiments. When the quantity of OPC replaced was greater than 25%, the compressive strength after 28 days was substantially reduced, with a maximum reduction of 78.8% (RS-60). The microscopic mechanism of RS-OPC suggested that the active SiO2in the RS can react with Ca(OH)2to produce C-S-H but can only utilize small quantities of Ca(OH)2, confirming the low volcanic ash activity of RS. RS was responsible for dilution and filling. The incorporation of 5% PG into RS-PG-OPC slowed the hydration process compared with RS-OPC without PG but also increased the flowability and aided in the later development of the mechanical strength. This was primarily because the addition of PG provided the system with sufficient Ca2+and SO42−to react with [Al(OH)6]3−to form ettringite (AFt), therefore accelerating the dissolution of Al3+in RS to generate more AFt and C-(A)-S-H gels. To some extent, this excites the volcanic ash of RS. Therefore, if there is an abundance of waste RS in the region and a lack of other auxiliary cementitious materials, a sufficient quantity of PG and a finely powdered waste RS component can be used to replace cementitious materials prepared with OPC to reduce the mining of raw OPC materials.Keywords:red sandstone;phosphogypsum;flowability;mechanical strength;micromechanics;volcanic ash activity
研究领域:
建筑材料学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Zhaorong Zhang,Tuxiang Guan,Xiaoyan Zhang,Liming Shen,Ningzhong Bao
Graphene fibers have great potential in yarn supercapacitors (YSCs) because of their good strength, flexibility, electrical conductivity, and ultrahigh specific surface area. Among the reported results, graphene fibers show higher capacitance properties, but their mechanical strength is relatively low. Here, we design a simple method to prepare high-performance graphene fibers with high strength and high capacitance by adding carboxymethyl cellulose (CMC) to graphene oxide (GO). The hydrogen bonding network between GO and CMC greatly improves the strength of the fiber. CMC can greatly improve the hydrophilicity of the graphene fiber, reduce the stacking of graphene sheets, increase the effective active area, and thus increase the capacitance. The as-prepared rGO–CMC fiber shows a high strength of 526.4 MPa, and the capacitance of YSCs reaches 197.7 mF/cm2.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Xiao Huang,Cai Liu,Yang Lu,Tongping Xiu,Jun Jin,Michael E. Badding,Zhaoyin Wen
A high strength Li-Garnet solid electrolyte composite ceramic is successfully prepared via conventional solid state method with Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 and nano MgO powders. Well sintered ceramic pellets and bars are obtained with 0–9 wt.% MgO. Fracture strength is approximately 135 MPa for composite ceramics with 5–9 wt.% MgO, which is ∼50% higher than that of pure Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (90 MPa). Lithium-ion conductivity of the composite is above 5 × 10 −4 S cm −1 at room temperature ; comparable to the pure Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 material. SEM cross-sections of the composite ceramic shows a much more uniform microstructure comparing with pure ones, owing to the grain growth inhibition effect of the MgO second phase. A battery cell consisting of Li/composite ceramics/Sulfur-Carbon at 25 °C exhibits a capacity of 685 mAh g −1 at 0.2 C at the 200 th cycle, while maintaining a coulombic efficiency of 100%. These results indicate that the composite ceramic Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 -MgO is promising for the production of electrolyte membrane and fabrication of Li-Sulfur batteries.
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
CERAMICS INTERNATIONAL
·
2018
·Vol. 45
·期 3
·3710-3714
·
IF 3.057
Yue Hu,Zhen Xiao,Huanping Wang,Can Ye,Yuqian Wu,Shiqing Xu
Porous CaSiO 3 ceramics were prepared via a solid-state reaction method using CaCO 3 and SiO 2 as raw materials and active carbon as a pore-forming agent. The results indicated that porous CaSiO 3 ceramics could be obtained under a low sintering temperature of 1320 °C. The addition of active carbon significantly affected the volume density, microstructure, pore size distribution and mechanical strength of porous CaSiO 3 ceramics. With the increase of active carbon content, the volume density decreased, meanwhile the pore size and porosity increased gradually. Besides, the three-point bending tests demonstrated that the mechanical strength was decreased with increasing active carbon content. However, all the porous ceramics still exhibited high mechanical strength. These results implied that the increase of active carbon content not only enlarged the pore size and enhanced the porosity, but also kept a remarkable mechanical strength of porous CaSiO 3 ceramics. Therefore, these rationally designed CaSiO 3 porous ceramics will be a highly potential material in various applications due to its high mechanical strength, low sintering temperature and narrow pore size distribution.
研究领域:
材料科学
·
生物陶瓷
·
组织工程
·
生物医学材料
·
无机非金属材料
✓ 已验证
DOI
高影响因子
ACS Nano
·
2017
·
IF 13.942
Miao Yang,Nifang Zhao,Ying Cui,Weiwei Gao,Qian Zhao,Chao Gao,Hao Bai,Tao Xie
Materials combining lightweight, robust mechanical performances, and multifunctionality are highly desirable for engineering applications. Graphene aerogels have emerged as attractive candidates. Despite recent progresses, the bottleneck remains how to simultaneously achieve both strength and resilience. While multiscale architecture designs may offer a possible route, the difficulty lies in the lack of design guidelines and how to experimentally achieve the necessary structure control over multiple length scales. The latter is even more challenging when manufacturing scalability is taken into account. The Thalia dealbata stem is a naturally porous material that is lightweight, strong, and resilient, owing to its architecture with three-dimensional (3D) interconnected lamellar layers. Inspired by such, we assemble graphene oxide (GO) sheets into a similar architecture using a bidirectional freezing technique. Subsequent freeze-drying and thermal reduction results in graphene aerogels with highly tunable 3D architectures, consequently an unusual combination of strength and resilience. With their additional electrical conductivity, these graphene aerogels are potentially useful for mechanically switchable electronics. Beyond such, our study establishes bidirectional freezing as a general method to achieve multiscale architectural control in a scalable manner that can be extended to many other material systems.
研究领域:
材料科学
·
纳米科技
·
生物医学工程
·
先进制造
·
功能材料
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jinman Zhou,Wei Liu,Lutao Lv,Xianyong Lu,Mingjie Liu,Lei Jiang
Developing thin materials that simultaneously exhibit high mechanical strength and low thermal conductivity is fundamentally challenging due to the intrinsic trade-off between structural reinforcement and thermal insulation. Herein, a dual deprotonation strategy is presented to create robust, layered aramid nanofiber films with low thermal conductivity. The pure organic composite films possess a tensile strength of 202.5 MPa, toughness of 24.1 MJ m −3 , and thermal conductivity of 0.0824 W m −1 K −1 , coupled with excellent thermal stability (decomposition temperature: 415.4 °C) and water resistance. Notably, these films retain over 95% of their mechanical strength across a broad temperature range (from −30 to 150 °C), surpassing intrinsic aramid nanofiber films, which maintain only 68% under similar conditions. This exceptional performance arises from strong interfacial 3D hydrogen-bonding networks, enabling efficient load transfer and thermal regulation between nanofibers and surface polymers. The findings offer a design strategy for next-generation lightweight materials that unify robust mechanical properties and thermal insulation or other properties, thus expanding their applicability in specific environments.
研究领域:
材料科学
·
高分子科学
·
纳米技术
·
热工学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiaokang Ma,Jingyu Kang,Tianyi Zhang,Xiaoyu Hao,Ming Jiang,Ruisheng Guo,Zhaozhu Zhang,Xuqing Liu
Nanoscale surface architecturing of high-performance organic fibers offers a viable avenue for enhancing interfacial adhesion and imparting additional functionality to fiber-reinforced polymer composites. Herein, the Micro-Swelling-Induced Nanoscale Hydrogen-Bond Network (MiNaHN) strategy is introduced, which integrates a robust nano-interface with the aramid backbone while preserving fiber integrity. The mild solvent-assisted micro-swelling treatment locally unlocks intermolecular hydrogen bonds, revealing amide sites that guide multivalent hydrogen-bonded self-assembly of 3-amino-1,2,4-triazole-functionalized reduced graphene oxide. Concomitantly, aramid nanofibers dispersed in phenolic matrix establish complementary bonding with both the resin and the modified fibers. The resulting architecture forms a continuous and dynamic hydrogen-bond network that bridges the fiber–matrix interface and the surrounding matrix. This integrated nano-interface raises the tensile strength of aramid/polytetrafluoroethylene fabric composites by 71.9%, while lowering the wear volume and friction coefficient by 45.4% and 31.5%, respectively. Microscopic and spectroscopic analyses show that the nanostructure promotes durable tribofilm formation and efficient stress dissipation without compromising the intrinsic properties of fibers. The MiNaHN strategy delivers a scalable route for activating chemically inert organic fibers through molecularly connected nano-interfaces and is broadly applicable to composite systems that require simultaneous gains in mechanical robustness and tribological stability.
研究领域:
材料科学
·
高分子复合材料
·
表面工程
·
摩擦学
·
纳米技术
·
功能化改性
✓ 已验证
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Ping He,Yu Zhang,Zhenguo Wang,Peng Min,Zhiming Deng,Lulu Li,Lvxuan Ye,Zhong-Zhen Yu,Hao-Bin Zhang
Graphene has been widely studied for its excellent properties of outstanding conductivity, strength , and flexibility. However, interlayer defects formed during the macroscopic assembly of graphene nanosheets will severely degrade the performance of graphene films. Herein, a strategy combined with trace carboxyl graphene oxide (GO), mild reduction, and chemical crosslinking is employed to minimize the interlayer defects for enhancing both the conductivity and mechanical strength of graphene films. The trace carboxyl feature of GO allows nanosheets to assemble orderly into highly oriented GO films . Subsequently, the mild chemical reduction preserves the highly oriented and packed microstructure. Coupling with further crosslinking by introducing conjugated molecules with pyrene terminal groups (1-pyrene butyric acid-1,6-hexane diamine, PHD) to provide extra π-π bonds, both the mechanical strength and conductivity of graphene films are improved to 548.4 MPa and 1.7 × 10 5 S m −1 , respectively. In addition, the graphene film with only ∼2 μm in thickness possesses an excellent electromagnetic interference shielding effectiveness (EMI SE) of ∼40 dB and a specific shielding effectiveness of up to 74 278 dB cm 2 g −1 in a wide frequency range of 8.2–40.0 GHz. Thus, this study provides an energy-saving fabrication route for mechanically strong, effective thermal management and EMI shielding films.
研究领域:
材料科学
·
纳米科技
·
高分子化学
·
功能材料
·
电磁屏蔽
·
热管理
✓ 已验证
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Gang Tang,Zhen Zhang,Rui Wang,Zicheng Xu,Mengfan Guan,Dan Deng,Shenghua Wu,Kang Dai,Xiuyu Liu
With the continuous growth in demand for flame-retardant materials in the construction and insulation industries, flame-retardant modification of rigid polyurethane foam (RPUFs) has become critical for their safe application in scenarios such as building energy conservation, cold chain refrigeration, and pipeline insulation. However, the high loading levels of traditional flame retardants often result in reduced mechanical strength and/or increased thermal conductivity of RPUFs. To address this issue, this study aims to enhance the flame retardancy, smoke suppression performance, mechanical strength, and thermal insulation properties of RPUFs by synthesizing an organic flame retardant additive containing phosphorus and silicon (PSiFR) and blending it with diatomaceous earth into RPUFs, leveraging the synergistic effects of the two materials. The optimal formulation is RPUFs containing 9.6 wt% PSiFR and 0.4 wt% diatomaceous earth (RPUF-3). Specifically, the peak heat release rate, total heat release, and total smoke generation of RPUF-3 are 47.2 %, 40.6 %, and 27.0 % lower than those of unmodified RPUFs, respectively. Compared with the compressive strength of unmodified RPUF (6.12kN·m/kg), the compressive strength of RPUF-3 is increased to 6.72 kN·m/kg. And also, its thermal conductivity (0.044 W/(m·K)) shows a downward trend compared with that of unmodified RPUF (0.044 W/(m·K)). The synergistic addition of PSiFR and diatomite successfully achieved simultaneous improvements in the flame retardancy, smoke suppression capability, mechanical strength, and thermal insulation performance of RPUF. This method provides an efficient and feasible modification strategy for fields such as building energy conservation and cold chain refrigeration.
研究领域:
高分子材料科学
·
阻燃材料
·
建筑材料
·
热功能材料
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Shan Zhang,Meng-chen Xu,Yu-peng Lu,Yi-tong Jiang,Shuo-chao You,Ya-hao Geng,Xiao-yan Li,Gui-yong Xiao
Biomedical dressings are highly susceptible to bacterial infections, and most suffer from poor mechanical resistance, leading to structural damage during application and reduced effectiveness. Therefore, developing novel dressings with high mechanical strength and effective antibacterial ability is essential. In this study, a multi-component composite membrane is designed to address these challenges by leveraging the reinforcing effect of hydroxyapatite nanofibers (HANFs) and the photothermal antibacterial abilities of copper sulfide (CuS). This composite membrane exhibits excellent mechanical properties, with a maximum ultimate tensile strength and Young's modulus of 61 ± 1.25 MPa and 937.36 ± 16.15 MPa, respectively, in the dry state. Under near infrared (NIR) irradiation, the generated heat and released Cu 2+ produce a synergistic antibacterial effect, with the inhibition rate against Staphylococcus aureus ( S. aureus ) exceeding 90 % when the HANFs@CuS content reaches 40 wt%. Cellular experiments confirm the good biocompatibility of the composite membranes across different HANFs@CuS contents, with cell viability maintaining over 80 % at 40 wt%. This study seamlessly integrates the mechanical advantage of HANFs with the photothermal antibacterial ability of CuS nanoparticles , providing a promising strategy for designing advanced biomedical dressings.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
抗菌材料
·
聚合物复合材料
✓ 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）