Ferroelectrics

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ISSN / EISSN : 0015-0193 / 1563-5112
Published by: Informa UK Limited (10.1080)
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, Zhongming Dong, Jinglong Ding
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 250-265; https://doi.org/10.1080/00150193.2021.1903267

Abstract:
Basketball has always been a favorite sport for many young people, but ligament injuries often occur during basketball, which will also affect the progress of many sports games. This study focuses on the effects of nanomaterials on the repair of basketball ligament injuries, mainly through tissue engineering to repair ligaments. First, HA nanocomposites are prepared by dissolving P (LLA-Cl) and collagen in hexagonal fluoropropanol. Samples were scanned and analyzed using a high-resolution micro-CT system. Scanning electron microscope (SEM) was used to examine the microstructure, chemical structure and thermal stability of the composite biomaterial. The ligament maturity is evaluated by measuring ligament growth (Tb.N). In vitro cell culture technique was used to inoculate bone marrow mesenchymal stem cells on the cultured nanomaterials, and the adhesion and proliferation of cells were observed with confocal microscope and SEM. The ability of bone marrow mesenchymal stem cells to secrete extracellular calcium matrix is determined by alcohol phosphatase (ALP) and calcium ion content. Using RT-PCR and immunohistology, bone formation and ligament differentiation of bone marrow mesenchymal stem cells were detected. Nanomaterials show extremely high compatibility with damaged ligament tissue, Lysholm score increased from 43.2 ± 2.4 points (30–88 points) before surgery to 96 ± 2.0 points (72–100 points) after surgery (p < 0.001). The research results show that nanocomposite materials combined with tissue engineering can obviously promote the repair of ligaments.
Hao Wang,
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 1-16; https://doi.org/10.1080/00150193.2021.1906109

Abstract:
The research of damping is an important and urgent topic in the research of structural vibration. Concrete material is one of the main bulk materials in civil engineering. The purpose of this study is to study the damping enhancement of concrete doped nano materials and the damping model of frame structure. Based on the experimental test method, the example method and the variable comparison method, combined with the damping motion and energy formula, the research carried out the concrete nano material mix proportion design and forming experiment. The results show that 0.0197 of 0% nano-SiO2 continues to rise to 0.0672 of 4% nano-SiO2, with an increase of 241.11%. The effect of damping enhancement is significant, and then the amount of Nano-SiO2 increases, but it falls back. Therefore, it is concluded that the optimal effect of damping enhancement of concrete is 2.94 times of that of plain concrete when the content of Nano-SiO2 is about 4%. This study has played an important role in improving the overall performance of the damping reinforced gradient structure concrete.
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 331-344; https://doi.org/10.1080/00150193.2021.1906119

Abstract:
Most athletes will suffer from knee arthritis (KOA), but the current medical methods have many problems, such as poor effect, slow recovery and so on. With the development of nanotechnology, nanotubes are gradually applied to medical treatment. The purpose of this study is to solve the problem of nanotube combined with exercise rehabilitation therapy in the treatment of KOA of dancers. In this study, the experimental verification method, big data analysis method, and combined with the solution model formula of nanotubes are used to design and demonstrate the experiment. The results showed that the fluorescence intensity of adhesion spot protein staining in the nanotube group was 3.5 times and 2.3 times of that in the pure titanium group, respectively, and the healing rate of bone cells in the drug delivery condition reached a peak of 39.5 in 3–4 days only, which was 50% faster than that in the simple use of drugs, and the treatment effect was also improved. It can be concluded that exercise therapy combined with comprehensive rehabilitation therapy can improve the pain symptoms of patients with knee osteoarthritis, improve the knee joint function and clinical efficacy, which has more advantages than simple rehabilitation therapy, and has higher clinical value for patients with KOA.
Guangqiang Ma, Min Cheng
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 281-286; https://doi.org/10.1080/00150193.2021.1903258

Abstract:
Based on the current production technology of sulfate process titanium dioxide, this paper discusses the experimental study on preparation of titanium-rich materials by pressure leaching of titanium concentrate from titanium white waste acid, which combines the comprehensive utilization of titanium white waste acid with the production of titanium-rich material, and studies the effects of acid-ore ratio, leaching temperature and time on the grade of titanium-rich materials. The results showed that the titanium-rich materials in a TiO2 grade of above 80% could be obtained under the conditions of 8 ml: 1 g acid-ore ratio, 150 °C acid leaching temperature and 7–8 hours acid leaching time. In addition, XRD analysis shows that after completion of acid leaching, FeTiO3, the main phase in titanium concentrate, has been converted into TiO2 phase in titanium-rich materials.
Sun Wei, Zhenhua Wang, Jiuye Chen, Huining Zhao, Qingyu Zhou, Zhengxuan Zeng, Wenshuo Chen, Shumin Guo
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 47-53; https://doi.org/10.1080/00150193.2021.1906113

Abstract:
The phase transformation mechanism and transformation path of Cu-Ni alloys is very important to study for their applications in excellent electrical properties and chemical catalysis. In this paper, the effect of compressive strain on the transformation path and mechanism of Cu1Ni3 alloy is studied by molecular dynamics simulations. The simulation results reveal that the transformation path of alloys is from Fcc-Bcc-Hcp phase to other phase (amorphous state). The simulations not only revealed the processes of atomic displacements and pair correlation function during the transformation, but also elucidated the underlying mechanism of the transformation at the atomic level. The mechanism of phase transformation could be the lattice reconstruction caused by lattice sliding and stretching. The simulation results provide a clear landscape on the transformation mechanism, facilitating our comprehensive understanding on the phase transition in the Cu-Ni system.
, Ling Li, Chuxuan Ren, Huaping Gou
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 302-316; https://doi.org/10.1080/00150193.2021.1902768

Abstract:
China is a big oil country, and its oil production and storage are in the forefront of the world. However, China's oil resources are mainly low-permeability reservoirs. It is characterized by small porosity, which leads to the increase of injection pressure and seriously affects the production rate. The main solution is to use polysilicon nano injection enhancer. Polysilicon nano materials can solve the problem of high injection pressure from the micro level. At present, there are many researches on polysilicon nano injection technology at home and abroad, but the research on the application of polysilicon nano materials in natural gas pipeline materials is still blank. In order to solve this problem, this paper will further study the injection enhancement effect of polysilicon nano materials in natural gas pipeline materials. First of all, through theoretical research and analysis, this paper believes that polysilicon nano injection technology has good application, good effect in oilfield injection pressure drop, and obvious advantages over other traditional injection additives. In order to further analyze the injection enhancement effect of polysilicon nanomaterials, the corresponding experimental model is established. The experiment is divided into two parts, one is the preparation of reagents and solvents. In this paper, nano polysilicon solution and corrosion inhibitor are re optimized. The other part is the specific test steps. In order to ensure the quality and verifiability of the test, this paper explains and records the test principle and steps in detail. After sampling and analysis of many core factors such as adsorption time and permeability, it can be seen from the analysis data that when polysilicon nanomaterials are injected, when the injection volume is about 1pv, the effect of depressurization is the best, and the comprehensive effect of depressurization is good. This study has achieved ideal results, which is of great significance to the related research of oil field.
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 117-124; https://doi.org/10.1080/00150193.2021.1906124

Abstract:
The modified layer was prepared by adding carbon fiber (Cf) and TiB2 to 7075 aluminum alloy using friction stir processing (FSP). The metallographic microscope was used to analyze the microstructure of the different regions of the modified layer. The results show that the grain refinement of the modified layer is remarkable and there is an obvious structure of “onion ring” in the modified layer. The closer to the stirring core zone, the higher the grain refinement degree will be. In the core area, the large granular carbon fibers are embedded in the substrate, and the fine granular TiB2 is distributed around the carbon fibers. Furthermore, there is a clear boundary between the thermo-mechanically affected zone and the heat affected zone, and the boundary has a certain inclination. In the direction of processing depth, the grain refinement is most obvious in the middle layer, and there are obvious metal particles embedded in it.
Haoran Meng, Ludi Zhang, Wenqiang Zhao, Yuanyuan Zhou, Yu Zhang, Guangyu Zhang
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 200-208; https://doi.org/10.1080/00150193.2021.1905743

Abstract:
As a new quasi-zero-dimensional nanomaterial, graphene quantum dots (GQDs) can solve the impact of carbon materials that have low specific surface area and few active sites, improving the performance of planar on-chip micro-supercapacitors (POMSs) by reducing the interdigital width. In this article, nitrogen and oxygen co-doped GQDs (N-O-GQDs) as an electrode material and narrow electrode width and gap are both 6 μm make the POMS possess a power density of 28.1 μW cm−2 and an energy density of 15.11 nWh cm−2. Importantly, the capacitance retention rate is as high as 96.1% after 10,000 cycles of charging and discharging.
Chen Chen, Jianfeng Zhang, Qiang Li, Gang Hong, Chun Lin,
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 40-46; https://doi.org/10.1080/00150193.2021.1906112

Abstract:
The nonlinear absorption of two-dimensional (2 D) Nb2CTx (MXene) nanosheets were investigated by using nanosecond Z-scan measurements in 532 nm under different laser intensities. It was found that, Nb2CTx nanosheets exhibit from saturable absorption (SA) to reverse saturable absorption (RSA). With the increase of incident intensity, a switch from SA to RSA occurs under some excitation intensities. Besides, ultrafast carrier dynamics of Nb2CTx nanosheets were also investigated by using pump-probe technique. It was found that the relaxation contains a biexponential decay process with two decay components, a fast and a slow one. The investigations show that Nb2CTx nanosheets can be used as building ultrashort pulse generation and optoelectronic devices.
, Ting Liu, Qi Zhou
Published: 10 September 2021
Ferroelectrics, Volume 581, pp 287-301; https://doi.org/10.1080/00150193.2021.1902767

Abstract:
Natural gas is an important energy in China's production and life. In the environment of advocating low-carbon life, natural gas is an important part of low-carbon energy. But what does not match with the demand is that the development technology of natural gas in China is relatively backward, and the most prominent one is the gas leakage phenomenon of natural gas pipeline. The aging and corrosion of natural gas pipelines often lead to more serious safety problems. At present, the main solution is to coat the natural gas pipeline with anti-corrosion materials, but the effect is not satisfactory because of the uneven quality of the materials. In order to solve this problem, the preparation method of nanocomposite inner coating and its application in natural gas pipeline are studied in this paper. Firstly, this paper focuses on the application of nano materials and nano composite materials in the field of anti-corrosion coating, and analyzes the physical benefits of materials. It is considered that the protective mechanism of the nanocomposite anticorrosive coating is mainly through the adhesion of the coating to the metal substrate, the mechanical isolation of the corrosive medium, the formation of passive protective film and electrochemical protection on the metal surface. In order to further analyze the specific effect of nanocomposite coating, the corresponding experimental model is established in this paper. Many comparative experiments including tensile property analysis, particle size analysis, hydrophobic property and DSC were carried out. It can be seen from the experimental data that the nano composite anti-corrosion coating performs well in the experimental test and has good corrosion resistance, but both the tensile property and hydrophobicity are related to the degree of hard segment. According to the comprehensive analysis, the nanocomposite inner coating is suitable for the weather pipeline, which is recommended to be popularized.
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