JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Liang Cai,Xin Hu,Guangfan Tan,Guangbin Li,Yingchun Zhang
Li 2 TiO 3 is a vital candidate breeder to solve tritium self-consistency of fusion reaction. In this study, Digital Light Processing (DLP) based on Stereolithography technology was used to fabricate Li 2 TiO 3 pebbles for the first time. Ceramic suspensions with different solid loadings were prepared by mixing modified Li 2 TiO 3 powder with UV-curable premixture. The size error of Li 2 TiO 3 green pebbles was corrected by adjusting the deformation factor of equatorial radius, and the Li 2 TiO 3 green pebbles were successfully fabricated with an accurate size. After sintering processing, the Li 2 TiO 3 pebbles with a uniform diameter of 1.5 mm and better sphericity of 1.01 were yielded. The sintering behavior of Li 2 TiO 3 pebbles were investigated. Results showed that the Li 2 TiO 3 pebbles formed with 35 vol% solid loading, and sintered at 1050 ℃ had a uniform pore distribution, and also had optimal properties, such as high relative density of 93.6 %TD, and prominent crush load of 92.3 N.
研究领域:
材料科学
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核工程
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增材制造
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DOI
高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 16
·5911-5923
·
IF 10.182
Guoqiang Zhu,Jinshuai Zhang,Jia Huang,Xixi Yu,Jianwen Cheng,Qianqian Shang,Yun Hu,Chengguo Liu,Lihong Hu,Yonghong Zhou
Developing sustainable 3D printing materials has attained intensive interest due to the rapid growth of the 3D printing industry and the concerns on depletion of fossil resources and environmental pollution. In this work, a novel biobased UV-curable oligomer (GMAESO) was firstly synthesized from epoxidized soybean oil (ESO) and gallic acid (GA) via a ‘green’ one pot method. The obtained biobased oligomer possessed a biobased content of 82.9%. By co-photopolymerization of the obtained oligomer with a hydroxyethyl methacrylate (HEMA) diluent, a series of UV-curable materials were prepared, and their properties as well as curing behaviors were investigated. Notably, the resulting GMAESO resins with high HEMA contents (50–60%) showed low viscosities (52–93 mPa s) and excellent thermal and mechanical properties (a Tg of 128–130 °C, Tp >430 °C, a tensile strength of 42.2–44.4 MPa, etc.) which were comparable or superior to a commercial product. Furthermore, the optimal resin (GMAESO with 50% HEMA) was used for digital light processing (DLP) 3D printing. The resin showed lower penetration depth (0.277 mm) than the commercial resin, thus different-structured objects with high resolution were successfully printed. In general, the developed bio-based UV-curable resins are very promising for application in the 3D printing industry.
研究领域:
材料科学
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化学工程
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可持续发展
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3D打印技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yixin Dong,Yansong Liu,Ying Zhang,Junzhan Zhang,Yongsheng Liu
Polymethyl methacrylate (PMMA) microspheres were used as pore-forming agents in the fabrication of porous silicon carbide (SiC) ceramics to control the pore structure and improve their high-temperature performance. PMMA microspheres reduced the viscosity and the overall attenuation coefficient of the SiC slurry, thereby improving its rheological stability and curing depth. As PMMA content increased from 0 to 60 vol%, open porosity rose from 26.27% to 54.98%, while bulk density decreased from 2.21 g/cm 3 to 1.53 g/cm 3 . PMMA decomposition generated uniform micrometer-scale spherical pores in the ceramic matrix. An appropriate open porosity enhanced thermal shock resistance by blunting crack tips and buffering thermal stress, while excessive open porosity caused stress concentration and accelerated crack propagation. The porous SiC ceramics containing 20 vol% PMMA microspheres exhibited the highest thermal shock resistance, with a critical temperature difference ( Δ T c ) of 338.3 °C.
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DOI
高影响因子
Materials Today
·
2022
·
IF 26.943
Yanfang Niu,Xiao Yang,Jiajia Li,Yi Zeng,Keliang Liu,Wang Wan,Junlong Liao,Mengxiao Wei,Sen Li,Junning Zhang,Zhejun Chong,Xin Du,Zhongze Gu
Controlling surface properties in a spatiotemporal and reversible manner is highly attractive for novel functional surfaces, as it allows them to act in a much smarter way. Surface modification strategies based on photochemical metathesis reactions are seemed as promising solutions for such demands, due to their high spatiotemporal controllability and the perfect reversibility. In this paper, we demonstrate a powerful strategy to precisely manipulate the surface functions by the combination of wavelength-controlled disulfide-diselenide dynamic photochemistry and a 405 nm digital light processing (DLP) projector. We show that, by this method, the arrangement of chemical moieties on a disulfide surface can be exactly controlled, leading to complex patterned surfaces with multinary and grayscale molecular distributions. Moreover, owing to the wavelength-dependent reactivity of the -S-S- and -S-Se- groups, the surface functions can be selectively and dynamically adjusted by light with different colors (wavelength). Based on these unique features, the chemical moieties on every point of the surface can be exactly controlled and dynamically manipulated by our strategy, making the generated surfaces quite versatile and smart. We demonstrate the successful application of this method in high-level information encryption and transformation.
研究领域:
材料科学
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表面化学
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光化学
·
纳米技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiu-Chong He,Xiu-Ning Chen,Yi-Hao Liu,Xinyu Zhong,Lei Qiang,Hong-Qin Wang,Fang-Zhou Wang,Jun-Song Wang,Cheng-Hui Li,Peng-Fei Zheng
3D printing hydrogels are widely used in biomedicine because of their unique flexibility, water richness, biocompatibility, and most importantly, the ability to manufacture customized complex structures. Among the various 3D printing technologies for hydrogels, Digital Light Processing (DLP) is advantageous due to its fast speed and high precision. However, the high-energy ultraviolet (UV) light used in most DLP can damage the bio-materials, which limits their application in biomedicine. Herein, by introduction of multiple strengthening mechanisms (nanofibers, hydrogen bonds and coordination bonds) and double photo-initiators, we designed a 2-acrylamide-2-methyl-propanesulfonic acid (AMPS)-based hydrogel, which can be manufactured into various high-precision structures through 3D printing with blue light (450 nm). The printed hydrogel has good mechanical properties, high water absorption capacity, and strong water retention property. Vitro and in vivo experiments revealed that the printed hydrogels show excellent biocompatibility, hemostasis effect and antibacterial properties. We further expand the application of 3D printing in the field of precision medicine. The use of 3D printed hydrogels can achieve accurate fitting and wound repair according to the structure of the patient’s wound, providing better curative effect to the patient.
研究领域:
生物医学工程
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材料科学
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组织工程
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产品关联
DOI
高影响因子
Additive Manufacturing
·
2024
·
IF 10.3
Donglin Lu,Kunji Lin,Xianle He,Yuzong Gao,Niansheng Huang,Lifu Lin,Shanghua Wu
The digital light processing (DLP)-based vat photopolymerization enables the fabrication of intricate silicon nitride (Si 3 N 4 ) components. However, challenges still persist in producing low-defect and high-performance ceramic parts at lower volume fractions. In this study, a new block copolymer was employed for the modification of Si 3 N 4 powders. The rheological behavior , dispersant mechanism, curing properties, printing performance of green body, mechanical properties and Weibull modulus of the sintered sample were systematically investigated. The results indicated that the modifier characterized by the long molecular chains and C C double bonds adhered successfully to the surface of Si 3 N 4 particles through hydrogen bonding , and the viscosity reduction effect of this modifier was ten times lower than that of the reported KH560 modifier. Besides, the synergistic dispersion effect achieved via the combination of the long chain modifier with a small molecular dispersant , facilitates the preparation of a 60 vol% (80.74 wt%) Si 3 N 4 slurry. Subsequently, the tightly bonded interlayer of the green body and the complex Si 3 N 4 sintered components with different volume fractions, high consistency and superb mechanical performance (the strength of 865.87 ± 54.35 MPa and the Weibull modulus of 18.49) were fabricated. These findings highlight the promising potential of the proposed modification approach for advancing the fabrication of high volume fraction and high-performance Si 3 N 4 components.
研究领域:
材料科学
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陶瓷工程
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产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 23
·5830
·
IF 3.1
Qing Qin,Lin Han,Gang Xiong,Zihan Guo,Junwei Huang,Yujuan Zhang,Zhen Shen,Changchun Ge
Digital light processing (DLP) 3D-printed Si₃N₄ ceramics, known for their exceptional performance, offer distinct advantages in meeting the high-strength and complex structural demands of industries such as aerospace, semiconductors, healthcare, automotive, energy, and machinery. However, due to Si₃N₄’s strong chemical stability, low diffusion rate, low self-sintering ability, and high melting point, achieving densification under conventional sintering conditions is challenging. As a result, sintering additives are essential to promote the sintering process, lower the sintering temperature, improve densification, and enhance performance. In this study, 45 vol% Si₃N₄ slurries were prepared using DLP 3D printing technology, incorporating nine different combinations of sintering additives, including aluminum oxide (Al2O3), yttrium oxide (Y2O3), and aluminum nitride (AlN), in various ratios with Si3N4. The slurries were then sintered at 1800 °C for 2 h under a 1 MPa N2atmosphere. Additionally, the phase composition, microstructure, grain distribution, and crack propagation of the materials. The results showed that a Si3N4to Al2O3and Y2O3ratio of 95:2.5:2.5 produced elongated β-Si3N4grain structures and enhanced density, achieving a maximum Vickers hardness of 12.88 ± 0.52 GPa. Additionally, the synergistic toughening effect of the rod-like β-Si3N4grains and sintering aids significantly improved the fracture toughness of the Si3N4ceramic matrix, with a flexural strength of 540.63 ± 10.05 MPa and a fracture toughness of 4.92 ± 0.07 MPa·m1/2. This study lays the foundation for the future application of 3D-printed Si3N4ceramics, optimization of sintering aid combinations at different ratios, and performance enhancement in extreme environments.
研究领域:
材料科学
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陶瓷工程
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增材制造
·
机械工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2025
·
IF 3.2
Liang Cai,Shurui Shang,Haifeng Xue,Xin Hu,Qiang Qi,Guangna Luo,Yingchun Zhang
Li 2 TiO 3 -Li 4 SiO 4 biphasic ceramic has attracted increasing attention because of its unique advantages for tritium breeding in fusion reaction. To overcome the critical limitations of conventional Li 2 TiO 3 -Li 4 SiO 4 pebbles, particularly their inadequate mechanical strength and low packing density, this work developed high-performance Li 2 TiO 3 -Li 4 SiO 4 cubic units via digital light processing (DLP). The purge gas flow behavior in stacked cubic unit structure was studied by Computational Fluid Dynamics (CFD) method to evaluate its structural characteristics. The photosensitivity and rheological properties of precursor suspension were studied to verify the printing feasibility. Solid loading and sintering process were optimized to yield the defect-free Li 2 TiO 3 -Li 4 SiO 4 cubic unit. The results show that the purge gas had periodic velocity distribution and extremely low pressure drop in the stacked cubic unit structure. Li 2 TiO 3 -Li 2 SiO 3 -Li 2 CO 3 ceramic suspension possessed suitable photosensitivity and thixotropy, and its optimal solid loading was 40 vol%. After sintering at 1100 °C, the Li 2 TiO 3 -Li 4 SiO 4 cubic unit with high relative density (92.8 %TD), high crush load (2000.3 N) and favorable open-pore structure can be prepared. Comparative analyses of Li-based cubic units indicate that the Li 2 TiO 3 -Li 4 SiO 4 cubic unit not only addresses the limitations of single-phase variants but also demonstrates superior intrinsic characteristics, including excellent mechanical& thermomechanical properties and distinct hydrogen isotope release behavior. This work proves the feasibility of Li 2 TiO 3 -Li 4 SiO 4 biphasic strategy and potential of Li 2 TiO 3 -Li 4 SiO 4 cubic units for the future tritium breeding design.
研究领域:
材料科学
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核工程
·
增材制造
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陶瓷材料
·
聚变能源
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Tao Wu,Hassan Karimi-Maleh,Yan Li,Zhouxiang Zhang,Dongxing Zhang,Yangping Wen,Li Fu,Nianbing Zhong,Elena Niculina Dragoi,Tejraj M. Aminabhavi
MOFs/MXene adsorbent was prepared by in-situ growth of MOFs(ZIF-67/ZIF-8) crystal particles onto the surface and between the layers of multi-layer MXene substrate. The method followed complex separation and recovery steps after completion of adsorption and there can be a risk of secondary contamination. To avoid this, DLP technique was used to print a series of 3D printed structures (3DS) with a specific topography, the prepared MOFs/MXene composites were loaded onto surface of the structure. Polydopamine (PDA) was then coated onto the surface to prepare monolithic adsorbent (PDA/MOFs/MXene/3DS) that was easily separated and recovered. The adsorbent was characterized by SEM, XRD, FTIR, TGA and XPS, while the batch adsorption of CR and Hg (II) was performed under different experimental conditions. The optimal removal rate and maximum adsorption of the monolithic adsorbent for CR and Hg (II) were 99.13/94.10 % and 75.76/464.48 mg/g, respectively and adsorption followed chemisorption onto the surface monolayer, which was spontaneous and exothermic. Multiple cycle tests showed excellent removal of CR (82.29 %) and Hg (78.47 %). In addition, adsorbent with synergistic effects of electrostatic interactions, H-bonding and π-π stacking shows a good adsorption effect. The study proved that that PDA/MOFs/MXene/3DS is a high-strength, structurally designable, green and promising adsorbent for large-scale remediation of real contaminants frpm wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Le Huy Thai,Le Thi Thanh Nhi,Truong Chau Giang,Le Van Quyet,Nguyen Minh Hiep,Tran Quang Hung,Le Hoang Sinh
A highly bistable viologen-based electrochromic display was successfully developed by using a simple strategy with cheap commercial phenol-based epoxy. By adding epoxy, phenol species can contribute a dual effect, in which they can play as electron shuttles to facilitate fast coloration of ECDs and stabilize the long bistability of ECDs through the proton-coupled electron transfer (PCET) mechanism during coloration state. With the use of epoxy, CPHEV 2+ /E exhibits an improvement of maximum ΔT, which is 78.6 % at 596 nm compared to 53 % for that of ECD without epoxy. The ECD with added epoxy can hold the colored state up to 50 h after applying a voltage of −2.5 V for 15 s compared with ECD without epoxy which is 22 min. Notably, the color state undergoes decomposition to 10 % of its initial value after 3.5 h without any extra power supply. The 3D-printed rose flower ECD was successfully demonstrated using digital light processing (DLP) with good dimensional accuracy and resolution.
研究领域:
材料科学
·
电化学
·
光电技术
·
显示技术
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xinmeng Zhou,Huan Liu,Zilian Yu,Hao Yu,Decheng Meng,Liran Zhu,Huanjun Li
Hydrogel microneedle patches have emerged as promising platforms for painless, minimally invasive, safe, and portable transdermal drug administration. However, the conventional mold-based fabrication processes and inherent single-functionality of such microneedles present significant hurdles to broader implementation. Herein, we have developed a novel approach utilizing a precursor solution of robust nanocomposite hydrogels to formulate photo-printable inks suitable for the direct 3D printing of high-precision, triple-responsive hydrogel microneedle patches through digital light processing (DLP) technology. The ink formulation comprises four functionally diverse monomers including 2-(dimethylamino)ethyl methacrylate , N -isopropylacrylamide, acrylic acid , and acrylamide , which were crosslinked by aluminum hydroxide nanoparticles (AH NPs) acting as both reinforcing agents and crosslinking centers. This results in the formation of a nanocomposite hydrogel characterized by exceptional mechanical strength , an essential attribute for the 3D printing of hydrogel microneeedle patches. Furthermore, this innovative 3D printing strategy facilitates facile customization of microneedle geometry and patch dimensions. As a proof-of-concept, we employed the fabricated hydrogel microneedles for transdermal delivery of bovine serum albumin (BSA). Importantly, these hydrogel microneedles displayed no cytotoxic effects and exhibited triple sensitivity to pH, temperature and glucose levels, thereby enabling more precise on-demand drug delivery. This study provides a universal method for the rapid fabrication of hydrogel microneedles with smart responsiveness for transdermal drug delivery applications.
研究领域:
材料科学
·
生物医学工程
·
药学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 35
·2305775
·
IF 15.1
Beining Li,Zhenjiang Li,Ido Cooperstein,Wenze Shan,Shuaipeng Wang,Benxue Jiang,Long Zhang,Shlomo Magdassi,Jin He
Fabrication of glass with complex geocd the low resolution of particle-based or fused glass technologies. Herein, a high-resolution 3D printing of transparent nanoporous glass is presented, by the combination of transparent photo-curable sol–gel printing compositions and digital light processing (DLP) technology. Multi-component glass, including binary (Al 2 O 3 -SiO 2 ), ternary (ZnO-Al 2 O 3 -SiO 2 , TiO 2 -Al 2 O 3 -SiO 2 ), and quaternary oxide (CaO-P 2 O 5 -Al 2 O 3 -SiO 2 ) nanoporous glass objects with complex shapes, high spatial resolutions, and multi-oxide chemical compositions are fabricated, by DLP printing and subsequent sintering process. The uniform nanopores of Al 2 O 3 -SiO 2 -based nanoporous glasses with the diameter (≈6.04 nm), which is much smaller than the visible light wavelength, result in high transmittance (>95%) at the visible range. The high surface area of printed glass objectives allows post-functionalization via the adsorption of functional guest molecules. The photoluminescence and hydrophobic modification of 3D printed glass objectives are successfully demonstrated. This work extends the scope of 3D printing to transparent nanoporous glasses with complex geometry and facile functionalization, making them available for a wide range of applications.
研究领域:
材料科学
·
增材制造
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）