Article
Thermodynamics
Wenzhen Zhang, Zhao Qin, Jianhua Yi, Suhang Chen, Kangzhen Xu
Summary: Although nano-Ti powder has potential applications in energetic materials, its agglomeration can reduce combustion efficiency. In this study, a homogeneous binary composite of nitrochitosan/nano-Ti was prepared and compared with nitrocellulose/nano-Ti. The results show that nitrochitosan/nano-Ti exhibits better performance in laser ignition and flame propagation speed, while also having lower impact sensitivity. Nitrochitosan may serve as an alternative high-energy dispersion medium instead of nitrocellulose.
COMBUSTION AND FLAME
(2022)
Article
Energy & Fuels
Changlu Xu, Tingwei Fu, Wenze Wang, Guiyin Fang
Summary: Hexadeol/nano titanium dioxide (nano-TiO2) composite phase change materials (CPCM) with different nano-additives were synthesized. In this CPCM, 1-hexadeol (HD) was used as the phase change material (PCM) and nano-TiO2 was the matrix. Nano zinc oxide (nano-ZnO), nano silver (nano-Ag), and graphene nanoplates (GNP) were added as enhancing heat conduction additives. The optimal content of nano-TiO2 in CPCM was found to be 20 wt%. Various analyses confirmed the absence of chemical reactions in the CPCM. The CPCM6 with 4 wt% GNP exhibited the best thermal performance, with a fusion temperature of 49.38°C, fusion latent heat of 183.85 J/g, and heat conduction of 1.73 W/(m·K).
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Yunchao Zhao, Liujie Xu, Mingyi Guo, Zhou Li, Zhaoning Xu, Jiahao Ye, Wuhui Li, Shizhong Wei
Summary: In this study, nano-Zirconia powders doped with different yttrium content were prepared by hydrothermal method, and the grain growth mechanism was analyzed. The addition of Y2O3 can refine the grains, and the growth mechanisms at different stages were discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Manufacturing
Bo Zhang, Shaohua Wu, Chuncheng Li, Yaonan Xiao, Jiajian Liu
Summary: A unique selective exfoliation method was developed to prepare micro/nano-PBO composite paper, which greatly improved its mechanical properties while preserving its ultrahigh heat resistance. The structurally optimized composite paper exhibited significantly enhanced mechanical strength, modulus, and electrical breakdown strength, making it a promising electrical insulating material for extreme environments.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Chemistry, Multidisciplinary
Khansaa Dawood Salman, Wisam Abed Kattea Al-Maliki, Falah Alobaid, Bernd Epple
Summary: This study aims to investigate the microstructure and mechanical properties of an Al matrix incorporated with various amounts of Fe2O3 and a constant amount of Ag. The results show that Fe2O3 and Ag nanoparticles are uniformly distributed in the Al matrix, and the addition of 12 wt.% Fe2O3 + 1Ag significantly enhances the micro-hardness and compressive strength, while reducing the wear rate to a minimum.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Ceramics
Qilong Chen, Tianbin Zhu, Yawei Li, Yong Cheng, Ning Liao, Liping Pan, Xiong Liang, Qinghu Wang, Shaobai Sang
Summary: A new approach was proposed in this study to enhance the performance of low-carbon MgO-C refractories by incorporating composite powders. It was found that this method significantly improved the thermal shock and slag resistance of the refractories, attributed to the toughening of zirconia and optimization of pore structure.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Textiles
Najmeh Kooshamoghadam, Salar Zohoori, Maryam Bekrani, Sara Shahsavari, Reyhaneh Talebikatieklahijany
Summary: In this study, a keratin nano ZnO emulsion was prepared by extracting keratin from wool, and the cellulose viscose fabric was treated with this emulsion to demonstrate good distribution and UV blocking properties. The presence of functional groups and the enhancement of physical properties by keratin in the cellulose composite were confirmed through SEM and FTIR analysis.
JOURNAL OF NATURAL FIBERS
(2022)
Review
Energy & Fuels
John Paul, K. Kadirgama, M. Samykano, A. K. Pandey, V. V. Tyagi
Summary: Phase change materials (PCM) have emerged as a novel class of materials for thermal energy storage, and their thermal conductivity can be enhanced by dispersing highly conductive nano additives. This review highlights the recent advances in synthesis routes that effectively enhance PCM thermal conductivity based on different dimensional nano additives, and examines the factors affecting thermophysical properties.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Xu Luo, Yu Li, Shuaijie Li, Xin Liu
Summary: This paper studied the effects of carboxyl-terminated polybutylene adipate (CTPBA) and zinc powder on the properties of epoxy resin. It found that the use of KH-550 as a modifier for zinc powder showed significant improvement in the mechanical and bonding properties of the epoxy resin. Flake zinc powder (f-Zn) had a better modification effect than spherical zinc powder (s-Zn). The addition of f-Zn in suitable amounts significantly increased the tensile shear strength, peel strength, tensile strength, and impact strength of the composites.
Article
Materials Science, Ceramics
Zhe Qiao, Shujing Li, Yuanbing Li, Jianing Wang
Summary: The study showed that barium zirconate can be synthesized at a lower temperature using barium hydroxide compared to barium carbonate, and the addition of copper oxide improves sintering performance. However, samples prepared with basic zirconium carbonate had uneven internal composition structures, affecting their performance.
CERAMICS INTERNATIONAL
(2021)
Article
Construction & Building Technology
Baifa Zhang, Yuan Feng, Jianhe Xie, Jianguo Dai, Wei Chen, Zixin Xue, Lijuan Li, Yun Li, Jianglin Li
Summary: This study investigated the effects of using recycled powder to replace alkali-activated cement's precursors on the properties and structure of the resulting recycled AAC. The results showed that the mechanical properties of recycled AAC decreased with increasing replacement ratio, but improved with pretreatment methods. Calcination at 600 degrees C exhibited better mechanical properties and lower critical pore size compared to carbonation.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Sarmad Naim Katea, Lars Riekehr, Gunnar Westin
Summary: Carbothermal reduction of Zr-sucrose gels powders into nano-phase ZrC or ZrC-Zr(C, O) core-shell powders was achieved by using a composite of 2-4 nm sized ZrO2 and amorphous carbon. The resulting products varied in morphology and structure depending on the sucrose-carbon:Zr ratio in the gels.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
A. V. Guskov, P. G. Gagarin, V. N. Guskov, A. V. Khoroshilov, K. S. Gavrichev
Summary: The temperature dependences of the cubic lattice parameters and the molar heat capacities of Ln(2)O(3)center dot 2HfO(2) solid solutions were determined in the temperature range 300-1300 K, with estimated coefficients of thermal expansion and C-p(T) equations.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Wei Zhang, Wentao Zhou, Zisen Zhang, Di Zhang, Zhengzheng Guo, Penggang Ren, Fei Liu
Summary: This study improves the mechanical properties and thermal stability of chitosan films by adding a plasticizer (sorbitol) and nano-filler (SiO2). The addition of sorbitol significantly increases the elongation at break of chitosan films, while nano-SiO2 further enhances the flexibility and toughness of the composite films.
Article
Materials Science, Ceramics
Xin Li, Chunming Deng, Shaopeng Niu, Chao Wang, Yaoning Sun, Weiming Su, Min Liu, Ziqian Deng, Xiaofeng Zhang
Summary: Higher calcination temperatures result in smaller powder sizes and increased binding force between primary particles, leading to the formation of a three-layer composite coating with excellent adhesion and thermal shock resistance.
CERAMICS INTERNATIONAL
(2021)
