JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Tao Li,Yuzhen Zhang,Wenyan Duan,Baojie Jin,Zihuan Chen,Shan Li,Bingshan Liu,Gong Wang
The printing accuracy in ceramic stereolithography is deteriorated by shrinkage due to photopolymerization of monomers and broadening owing to scattering of light. To improve the accuracy of printed alumina parts, a series of experiments involving the reduce of shrinkage and broadening were conducted. Firstly, the dependence of conversion of monomers , shrinkage of suspensions and warpage of parts on energy doses was quantitively investigated and correlated, with which the shrinkage was well controlled through optimization. Besides, the warpage problem was effectively resolved when adding 30 wt% PEG-200 in the suspensions to release the accumulated internal stress . Next, the broadening under different energy doses was observed and reduced by addition of absorbers, after which a self-defined parameter C d / W e was applied to suggest strategies in the selection of appropriate processing parameters and absorber content. On this basis, the holes with a diameter ranging from 50–200 μm were successfully printed.
研究领域:
材料科学
·
制造工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yongkang Yang,Boran Wang,Jie Li,Jianglin Wang,Ke Wang,Yue Wang,Shuxin Niu,Xin Li,Xiqing Xu
In the vat photopolymerization (VPP) 3D printing of ceramic cores, the solid loading is generally conducive to the microstructure and performance of products, owing to the improved bonding between adjacent layers and enhanced dimensional accuracy with increasing solid loading. In this work, the content of ceramic powder in photosensitive resin was optimized, the solid loading increased from 56 vol% to 68 vol%, and a novel curing model was established to explain the impact of solid loading on the printing precision. During sintering, the shrinkage is regulated to approximately 3 %, demonstrating a more homogeneous structure. The interlayer strength increased to 11.43 MPa while maintaining an apparent porosity of 23.47 %. Furthermore, the anisotropy of VPP-3D printed ceramic cores dependent on the solid loading was investigated. The ratio of vertical strength to horizontal strength (σ V /σ H ) increased from 0.57 to 0.68 when the solid loading grew from 56 vol% to 68 vol%. At 1540 °C, the value of σ V /σ H was further enhanced to 0.81. This value met the precision casting criteria for ceramic cores effectively. This work can provide a reference for the investigation of high-solid-loading ceramic cores.
研究领域:
材料科学
·
制造工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Wencai Dong,Chonggao Bao,Hao Li,Rongzhen Liu,Shijia Li,Haiqiang Ma
To improve the print quality of SiC ceramic, an amorphous SiO 2 layer is prepared on the surface of SiC by oxidation (SiC@SiO 2 ). The changes in curing depth and width direction of SiC@SiO 2 curing sheets with different degrees of oxidation were investigated. The results showed that curing depth increased while curing width decreased with an increasing degree of oxidation. The edge morphologies of SiC@SiO 2 curing sheets changed from serration to flat shape with increasing degree of oxidation, and uneven overcuring regions appear in the width direction. Additionally, 12% SiC@SiO 2 ceramic was fabricated via vat photopolymerization combined with reaction sintering . The dimensional deviation ratio of printed green bodies increased with decreasing printed line width and pore diameter. The minimum printed line width of 329 μm and pore diameter of 483 μm with good print quality were obtained. Furthermore, the flexural strength of 225.4 MPa and bulk density of 2.77 g cm −3 for sintered 12% SiC@SiO 2 parts were obtained.
研究领域:
材料科学
·
增材制造
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Shengyang Ji,Minghao Xu,Ye Li,Yucheng Zou,Zhenjiang Zhou,Xi Zhao,Jianfu Shen,Baiyi Lu
Understanding the printability and underlying mechanisms of starch food systems is crucial for the industrial application of 3D food printing. This work investigated the effect of fatty acids with various degrees of unsaturation and chain lengths on the three-dimensional (3D) food printing precision of cassava starch (CS) gel and its mechanism. Results showed that fatty acids with shorter chain lengths and higher unsaturation levels improved printing precision. These modifications increased the average molecular size ( R h ) and crystallinity of starch, with shorter fatty acid chains reducing the percentage of amylopectin chains for 6 < X ≤ 12, while higher unsaturation levels increased the proportion of amylose chains for 100 < X ≤ 1000. These changes in starch multi-scale structure contributed to a decline in the T 23 of the printing ink, which in turn resulted in an increase in elastic modulus (G′) of the gel system, thus eventually enhancing the self-supporting properties and improving the printing precision of the 3D printed product. This research presents valuable insights into the use of lipids in 3D printing of starchy foods.
研究领域:
食品科学
·
生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2019
·Vol. 8
·期 4
·677-690
·
IF 5.047
Yeqiao Meng,Jinlong Cao,Yue Chen,Yaru Yu,Lin Ye
Inspired by the gradient structure of articular cartilage, a poly(vinyl alcohol) (PVA)-based composite hydrogel with a biomimetic gradient structure as an artificial cartilage replacement was constructed by an extrusion 3D printing technique. The influence of the concentration and composition of the PVA-based solution on its rheological behavior and printability was studied, and the improvement mechanism for the 3D printing accuracy of the hydrogel was explored: introduction of GO or GO–HA gave rise to weakened inter-molecular hydrogen bonds and reduced entanglement density simultaneously, and the dynamic viscosity was highly improved. Therefore, the solution exhibited enhanced shear-thinning behavior in the printing shear rate range and a reduced Barus effect, thus highly improving the printability and printing accuracy of the samples. The 3D printing of PVA hydrogels was successfully achieved, and the printed biomimetic gradient samples possessed suitable compressive and tribological properties, which showed promising potential in the precise customized repair of artificial cartilage.
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2023
·
IF 6.4
Jingyi Chen,Ruyue Su,Xiaofei Zhai,Yaru Wang,Xiong Gao,Xueqin Zhang,Yanpeng Zhang,Yan Zhang,Sheng Liu,Rujie He
Ceramic microcomponents have a wide range of applications in microfluidic, sensors, etc. Stereolithography 3D printing technology provided a shortcut for the preparation of this small-size and complex component. With the development of device miniaturization, the existing stereolithography forms cannot meet the demand. To prepare smaller components, it is necessary to decrease the slice thickness ( C s ). But during the stereolithography 3D printing, ceramic is usually easy to over-cure, leading to the key issue in the stereolithography of ceramic microcomponents: the mismatching between the curing thickness ( C p ) and the slice thickness ( C s ). To solve the problem above, this paper started from the stereolithography mechanism of the ceramic/resin slurry and adjusted the matching relationship between C p and C s theoretically by adding a photoabsorber. Then, from the experiments, the influence of different content of photoabsorber (carbon black) on curing thickness, printing accuracy, and sintering accuracy, were studied. Al 2 O 3 ceramic microcomponents that met the design requirements were thus prepared. These results would help in the development of stereolithography 3D printing of ceramic microcomponents.
研究领域:
材料科学
·
制造工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2016
·
IF 3.719
Zixiang Weng,Yu Zhou,Wenxiong Lin,T. Senthil,Lixin Wu
Organically modified nanofillers, including nano SiO 2 , montmorillonite and attapulgite were loaded to stereolithography resin (SLR). The surface of nanofillers were modified using organic modifier of 3-(trimethoxysilyl)propyl methacrylate (γ-MPS) and (1-hexadecyl)dimethyl allyl ammonium chloride (C 16 -DMAAC), and were characterized by FTIR and small angle XRD analysis. The morphology of nanocomposites were observed by TEM. Viscosity and curing speed of SLR nanocomposites at increasing nanofillers loading were also studied. The mechanical properties of printed samples fabricated by a home-made stereolithography apparatus (SLA) 3D printer were tested. The influence of nanoparticles on the accuracy was measured and discussed. It was found that addition of 5% w/w of nano SiO 2 increased the tensile strength and modulus by 20.6% and 65.1% respectively, and the printed accuracy was not significantly influenced. This study opens the way to the application of nanocomposites in the desktop level SLA 3D printing .
研究领域:
材料科学
·
3D 打印技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Yujie Yang,Xin Xu,Zhiqiang Li,Xinle Yao,Dongqing Kang,Yaozhong Lu,Yanbin Wang,Yuxiong Guo,Xiaolong Wang
Conventional benzoxazine is difficult for molding and manufacturing parts with complex structures, shaped thin walls, etc. In this work, we presented a new method of synthesizing vat photopolymerization 3D printable benzoxazine inks were proposed to produce high precision constructions with low shrinkage. A creative benzoxazine monomer with excellent printability was synthesized by 2,2′-bis(trif luoromethyl)-4,4′-diaminobiphenyl (TFDB) and Bisphenol AF grafting with isocyanoethyl methacrylate (IEM). Specially, the solvent-free benzoxazine inks have ultra-low shrinkage, line shrinkage up to 1.8%. Minimum printable feature size of 300 µm. This study has solved the problem of benzoxazine being too brittle to be machining. It can be used in aerospace and copper laminate applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 6
·3143-3153
·
IF 2.2
Lu Yunfei,Wang Yuxin,Qi Xue,Lv Hao,Yin Ao,Liu Haipeng,Yu Suzhu,Zhao Weiwei,Wei Jun
Printed conductive polymer composites allow for the bespoke manufacture of products with complicated geometries, which is critical for rapid prototyping and adaptability of flexible electrical devices. However, it is still challenging to prepare environmentally friendly and sustainable conductive polymer composites with aqueous solvent systems which accomplish excellent printing and electromechanical properties at the same time. In this work, the effect of composite components on performance was explored, and orthogonal tests were utilized to discover the precise formulation of new green aqueous conductive polymer composites with superior performance. The printing accuracy of the conductive polymer composites was enhanced (printed circuit burrs less than 20 μ m) and the dependability of the printed circuits as well as the failure mechanism during electrochemical migration (ECM) were thoroughly investigated. As a proof of concept, ultrahigh frequency (UHF) flexible linearly polarized antennae with read range forward surpassing 10 m was designed and printed.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Ruiling Li,Ningzhe Wang,Chao Ma,Jiacheng Wang,Jing Wang,Xin Yang
To improve the 3D printing quality of emulsion gels, this study prepared ovalbumin-gellan gum emulsion gel (OG-EG) by adding gellan gum to peanut oil-ovalbumin emulsion. The effects and mechanisms of ultrasound time and storage time on the physicochemical properties, 3D printing accuracy, microstructure, and protein structure of OG-EG were investigated. Ultrasound and storage treatment enhanced the viscoelasticity, hardness, and compactness of the network structure of OG-EG. At ultrasound time of 3.5 min and storage time of 4 min, the printed products of OG-EG exhibited uniform filaments and stable structures, and could accurately print fine patterns with a size of 3 mm with a printing accuracy of 91 %. Ultrasound and storage treatments resulted in the formation of a stable and robust network structure in OG-EG, with emulsified oil droplets filling the gel network. The synergistic interaction of these components led to the development of an emulsion gel with excellent printing performance.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Xiaofeng Zhan,Shuhui Yang,Weixia Zhou,Yanyan Wang,Jianhua Rong,Youming Liu,Chuan Li,Yongqiang Zhao,Shanbai Xiong,Yang Hu
To address the low utilization of crayfish oil in crayfish by-products, this study aimed to extract oil from crayfish by-products and apply it to surimi gels to produce novel products. The investigation focused on the impact of various volume ratios of gelatin (GeL) to xanthan gum (XG) on Pickering emulsion stability and the quality of surimi 3D-printed products. The findings indicated that when the ratio of GeL to XG was 2:1, the Pickering emulsion obtained had a smaller particle size of 23.97 μm and a maximum absolute zeta-potential of 28.30 mV, which could make the crayfish oil emulsion system more stable. Subsequently, the micro-rheological analysis indicated that GeL/XG (2:1) stabilized emulsion had the highest MVI value (0.59 nm −2 ·s at 85000 s), suggesting it may be more dominant during long-term stability. In addition, the addition of stabilized crayfish oil emulsion to surimi for 3D printing improved the quality of the surimi final product. It was found that when the emulsion was added at an amount of 5 %, the obtained surimi mixture had higher printing accuracy (86.00 %) and printing stability (98.64 %), with a hardness of 660.35 g, a springiness of 0.8750, a chewiness of 384.82 g, and a water holding capacity of 93.10 %. This work could provide valuable theoretical and methodological insights into the extraction and utilization of crayfish by-product oils as well as 3D printing of crayfish meat, especially in terms of quality, texture and color.
研究领域:
食品科学
·
食品工程
·
3D打印技术
·
乳液稳定性
·
质构分析
✓ 已验证
DOI
PubMed
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Jiang Shao,Yanqiu Liu,Yang Li,Yuanfeng Wang,Ruolan Li,Li Yao,Yian Chen,Yunji Fei,Jingyue Wang,Ansha Zhao
Stereolithography (SLA) is an emerging technology in three-dimensional printing that has garnered significant attention in the biomedical field due to its high printing fidelity, good biocompatibility, and high spatial resolution. Polyethylene glycol diacrylate (PEGDA) is commonly used as a photosensitive printing ink in SLA, and it possesses excellent biocompatibility, photosensitivity, processability, water solubility, and biomechanical tunability. Additionally, PEGDA exhibits unique anti-protein, platelet, and cell adhesion possibilities, making it a promising material for blood contact applications. However, cross-linking PEGDA using chain growth photopolymerization results in a high concentration of reactive functional groups, leading to high print volume shrinkage, decreased precision of the finished product, warping, deformation, and cracking. This study introduces a chemically modified methacryloylated chitosan (CSMA) as a cross-linking agent into the PEGDA ink. This strategy effectively reduces the volume shrinkage of the ink and imparts antimicrobial properties to the final product. The dual anticoagulation properties of PEGDA were achieved by loading divalent copper ion (Cu II ) into the ink, which better addresses the antimicrobial and anticoagulant needs in the physiological environment of blood. The results show that SLA printable inks based on PEGDA/CSMA/Cu II have low swelling, high print fidelity, high stability, and good cell compatibility. Furthermore, by verifying the functionality of PEGDA/CSMA/Cu II , the research shows that the bioprinting ink exhibits excellent antibacterial and anticoagulant properties, making it a promising material candidate for SLA 3D printing of blood purification, central venous catheter, and other semi-implanted blood materials. This study provides new ideas for developing multifunctional photosensitive inks in biomedical engineering.
研究领域:
生物医学工程
·
材料科学
·
3D打印
·
生物材料
·
生物技术
✓ 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）