ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Xinliang Li,Guancheng Jiang,Xiulun Shen,Gongrang Li
The hydration and swelling of shale formations are serious problems for well drilling. The use of an efficient shale inhibitor is one of the most important methods for overcoming the wellbore instability issue. In this work, poly-l-arginine (PArg) was synthesized and used as an efficient and biodegradable shale inhibitor. This inhibitor was systematically evaluated through measuring the swelling degree of the bentonite (Bent) pellet, the rheological behavior of the Bent suspensions, and the recovery percentage of shale cuttings. The results demonstrated that 2.0 wt % PArg could reduce the swelling degree of Bent to 70.53%, improve the shale recovery percentage to 71.40% at 180 °C, and inhibit 12.0 wt % Bent mud-making. The PArg displayed a highly inhibitive performance and excellent high-temperature resistance property, better than common inorganic KCl and organic polyether diamine. The underlying inhibition mechanism was also proposed based on measuring the variation of the interlayer spacing of the Bent, observing the exterior morphologies of Bent particles, and assessing the particle size distribution and electrokinetic potential. The results indicated that the PArg displayed its inhibitive effect mainly by adsorbing onto the Bent, encapsulating the Bent particles efficiently, and decreasing the interlayer spacing in a certain degree with 0.9 Å. This study can contribute to designing highly inhibitive water-based drilling fluids containing PArg.
研究领域:
石油工程
·
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 64
·34008-34013
·
IF 3.708
Dan Xu,Weili Li,Lidong Wang,Wei Wang,Wei-Dong Fei
BaTiO3 and 1.5 mol% AlN/BaTiO3 (AlN/BT) piezoceramics were prepared via a conventional solid-state reaction method. The effects of sintering temperature on the phase structure, preferential orientation degree of Al3+–N3− pairs and electrical properties of the ceramics were investigated and analyzed. The AlN/BT ceramic sintered at 1325 °C obtains the optimum piezoelectric properties of d33 = 305 pC N−1, kp = 0.33 and Qm = 140 due to the preferential distribution of Al3+–N3− pairs and suitable sintering temperature. The high temperature stability testing reveals that these AlN-doped BT ceramics are useable at temperatures as high as approximately 115 °C. These properties indicate that this system is a potential high piezoelectric lead-free candidate material to be further studied.
研究领域:
材料科学
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Science
·
2021
·Vol. 9
·期 18
·6098-6107
·
IF 6.843
Yuting Shi,Xiaoquan Ding,Yufei Cao,Haicun Zhou,Wenwen Yu,Mingsheng Liu,Juanjuan Yin,Hongbin Liu,Jingjing Wang,Congshu Huang,Chenliang Gong,Hua Wei,Guanghui Zhao
Thrombin is a serine protease known as activated coagulation factor II and is primarily applied as an effective local hemostatic agent. However, its clinical application is hindered by drawbacks, such as high sensitivity to the surrounding environment, instability and poor storage stability, easy inactivation, and low bioavailability. The biological functions of biomacromolecules in harsh environments can be preserved through biomineralization. Despite the success of biomimetic mineralization, limited consideration has been given to the mineral-based methods and the effect of various metal ions on enzyme activity. To explore an efficient technique for biomimetic mineralized thrombin, six kinds of ion/thrombin hybrid microflowers and two kinds of thrombin/MOF were synthesized in this work. The results showed that Zn-HNFs-G exhibits good hemostatic effect and maintains high enzymatic activity when exposed to high-temperature conditions. Meanwhile, Fe-HNFs-G, Thrombin@ZIF-8-G and Thrombin@MAF-7-G possess negligible enzyme protection.
研究领域:
生物医学工程
·
材料科学
·
止血
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Yupeng Shi,Dan Li,Haoxu Si,Zhiyang Jiang,Mengyuan Li,Chunhong Gong
High-efficiency and temperature-insensitive microwave absorbing materials (MAMs) are ideal for high-temperature electromagnetic attenuation. Herein, the titanium nitride/boron nitride (TiN/BN) composite with TiN as the loss unit and BN as the impedance matching unit has been constructed by the in-situ synthesis method. The insulating BN not only effectively regulates and optimizes the conductivity and impedance matching of the material but also imparts steady cyclic microwave absorption properties. The steady dielectric loss ensures that TiN/BN composite has robust high-temperature absorption properties at X-band, with a minimum reflection loss (RL min ) of −16.74 dB at 873 K and an effective absorption bandwidth (EAB) of 3.26 GHz in the temperature range of 293–873 K. Compared with the TiN/SiO 2 absorbers with a single system, the TiN/BN/SiO 2 composite keeps reliable high temperature absorbing properties at 873 K. This work confirms that wave-transparent materials for dielectric property modulation can resolve poor temperature stability of effective absorption and non-reusability for high-temperature absorbing materials, providing inspirations for designing efficiency high-temperature microwave absorbers.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 9
·e55005
·
IF 3
Xiaodong Bai,Moubo Wang,Yu Chen,Lianci Wu,Jingya Yu,Yumei Luo
The P(AM- co -AMPS)/SA DN hydrogel was synthesized through aqueous polymerization in this study. It formed a crosslinking network with hydrophobic associations between acrylamide (AM) and lauryl methacrylate (LMA), as well as an ionic bond network involving sodium alginate and Ca 2+ . To enhance its high-temperature resistance, 2-acrylamide-2-methylpropane sulfonic acid (AMPS) was incorporated into the hydrogel formulation. The structure of the hydrogel was characterized using Fourier transform infrared spectrometer (FTIR), thermogravimetric analyzer (TGA), and scanning electron microscopy (SEM) techniques. Results demonstrated that the hydrogel exhibited excellent temperature resistance and possessed a porous structure. Mechanical testing revealed a high tensile strength of 110 kPa, elongation at break of 995.31%, along with good fatigue resistance and self-recovery performance during multiple cyclic stretching. Healing experiments indicated that the healing strength of the hydrogel was influenced by temperature variations. Furthermore, pressure plugging tests were conducted on steel models with crack widths of 0.5 and 1 mm, respectively; it was found that the 0.8%P(AM- co -AMPS)/SA DN hydrogel could withstand pressures up to 4.5 MPa at a temperature of 70°C. This novel hydrogel material exhibits remarkable mechanical properties along with certain self-healing capabilities, making it suitable for leak control 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
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yuyu Liu,Wenye Deng,Pengjun Zhao,Huimin Zhang,Aimin Chang,Yongxin Xie
The negative temperature coefficient (NTC) thermal sensor has received much attention for temperature sensing, which aims to achieve accurate temperature measurement by using the electrical signal generated by its temperature change. The perovskite (1- x )CaMn 0.05 Zr 0.95 O 3 - x CaMnO 3 ( x = 0, 0.1, and 0.2) composite ceramics were reported for the first time. Furthermore, their structure, microscopic morphology, and device performance were systematically evaluated. It was revealed that the sensor performance could be tuned by controlling the CaMnO 3 ratio in the low resistance phase. The phase structure and crystal structures (cell volume and cell parameters a, b, and c) of the composite ceramics were defined using x-ray diffraction (XRD) refinement. Scanning electron microscopy (SEM)/Mapping revealed dense and uniform micromorphology. The ln( ρ ) and 1000/T were quite linear, and the aging drift rate was as low as 1.89% after aging at 900 °C for 600 h. Importantly, a novel double hopping mechanism and a cation vacancy defect diffusion model were proposed to reveal the electron transport mechanism in the sensor lattice and elaborate the physical mechanism of the effect of cation vacancy defects on sensor resistance drift. In conclusion, this study prepared an NTC thermal sensor with ultra-high stability in a high temperature environment by rational design, providing a fresh idea for subsequently developing a high temperature NTC sensor.
研究领域:
材料科学
·
传感器技术
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 16
·2296
·
IF 4.7
Shuai Gao,Zeqi Cao,Kai Liu,Shuning Liu,Wanjun Pang,Hongyi Jiang
To reduce production costs and enhance the high-temperature resistance of SiO2aerogels, an aluminum-doped silica aerogel (ASA) was successfully prepared using the sol-gel method and atmospheric drying method. The composite silica sources included TEOS and inexpensive acidic silica sol, while the aluminum source was aluminum sol. The study investigated the influence of the molar ratio of acidic silica sol to TEOS, Al/Si, and calcination temperature on the composition, structure, and high-temperature resistance of the ASA. The results indicate that a sample with an acidic silica sol to TEOS molar ratio of 0.8 achieved a specific surface area of 683.204 m2·g−1. The Al/Si molar ratio significantly impacted the high-temperature resistance of the ASA, with the sample having a molar ratio of 0.02 Al/Si displaying the highest specific surface area of 705.956 m2·g−1at 600 °C. Moreover, this surface area remained at 273.099 m2·g−1after calcination at 1000 °C, notably higher than the sample without aluminum sol (16.082 m2·g−1). Mechanism analysis indicated that the addition of aluminum sol to the SiO2aerogel inhibited phase transitions, and both acidic silica sol and aluminum sol particles enhanced the aerogel structure, contributing to a marked improvement in high-temperature resistance.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2019
·
IF 3.89
Qi Chu,Junlin Su,Ling Lin
In this study, a series of amidocyanogen silanols (HASes) modified by methacryloxy propyl trimethoxyl silane (MPS) with polyethylene polyamine was introduced as potential shale inhibitors, thus providing the development and application of high-temperature resistant shale inhibitors in water-based drilling fluids. One shale inhibitor was selected based on cuttings dispersion tests. The results indicated that the shale inhibitor prepared with tetraethylenepentamine and MPS with the mole ratio of 1:2 (named HAS-8) was the best. The inhibition performance of HAS-8 was evaluated with the cuttings dispersion test, linear swelling test, and bentonite inhibition test, and was compared with the performance of currently available polyamine inhibitors. The results indicated that HAS-8 can effectively inhibit the hydration swelling and dispersion of clay, and that its temperature resistance is significantly better than that of polyamine inhibitors. The inhibition mechanism of HAS-8 was investigated with X-ray diffraction, adsorption measurement, and thermogravimetric and transmission electron microscope analysis . The mechanism is the adsorption on the clay surface and the intercalation of the interlayer, which inhibited the surface hydration and osmotic hydration of the clay. In field application of Bei 9 well, the HAS-8 effectively inhibits the hydration of water-sensitive cuttings and maintains the wellbore stability of the shale formation , providing a guarantee for safe and fast drilling.
研究领域:
石油工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zhenfeng Guo,Tianqi Zhang,Xiaoqing Wang,Chenyu Mi,Zitao Guo,Guanghui Zhang,Benxue Liu,Yongshuai Xie,Luyi Zhu,Xinqiang Wang
The demands for high-temperature resistant thermal insulation materials in the realms of aviation, aerospace, and military technology are constantly escalating. The development of thermal insulation materials capable of stable operation at high temperatures above 1200 °C has become a significant research direction. In response, Gd 2 Zr 2 O 7 has emerged as a promising flexible thermal insulation material due to its low thermal conductivity, high melting point and thermal stability. This study addresses the challenge of fabricating Gd 2 Zr 2 O 7 nanofibers with superior mechanical properties and high-temperature stability. Defect fluorite-structured Gd 2 Zr 2 O 7 nanofibers were prepared by using the sol-gel method and electrospinning technique. The resulting nanofibers exhibited small grain size (84.5 nm@1300 °C), dense structure and high tensile strength (1.69 MPa@1100 °C), excellent bending fatigue resistance (recoverable bending strain up to 80 %). Additionally, the nanofibers demonstrated high strength retention (68 %) and low area shrinkage (<2 %) after heat-treatment at 1300 °C, indicating excellent high-temperature stability. The thermal conductivity of Gd 2 Zr 2 O 7 nanofiber membranes was very low (26.2 mW·m −1 ·K −1 @1300 °C), showcasing outstanding high-temperature insulation property. Therefore, the simple and effective preparation method proposed in this study, along with the superior thermal insulation performance of the Gd 2 Zr 2 O 7 nanofibers, shows great potential for large-scale practical applications.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Long Chen,Jianhao Lu,Yibo Wang,Pan He,Shaobo Huang,Yan Liu,Yanzhou Wu,Gaoping Cao,Li Wang,Xiangming He,Jingyi Qiu,Hao Zhang
Lithium ion batteries (LIBs) have swept the whole energy storage field. However, the current mainstream lithium batteries are difficult to operate stably at high temperature (>60°C) due to the decomposition of electrolyte and solid electrolyte interphase (SEI), the cathode metal elements dissolution behavior, and potential thermal runaway. Here, We report a double-salt electrolyte with lithium bis(fluorosulfonyl)imide (LiFSI) and lithium difluoro(oxalato)borate (LiDFOB) as electrolyte salt, fluoroethylene carbonate (FEC), and tetra(ethylene glycol) dimethyl ether (TEGDME) as cosolvent, which delivers excellent ionic conductivity, high electrochemical stability and satisfactory ability to impede the dissolution of Fe element under elevated temperature (70°C). In addition, the electrolyte is benefited to form a robust and thermal-resistance solid-electrolyte interface (SEI) layer on the surface of graphite (Gr) anode, which shows improved decomposition temperature (86°C). The assembled thermally stable and high-safety 1300 mAh 18650-type LiFePO 4 |Gr cell shows high Coulombic efficiency (∼99.7%), improved cycling stability with discharge capacity 871.1 mAh after 200 cycles at 0.5 C and 70°C. This work affords a splendid strategy for address the unstable interface at both cathode and anode for safe high-temperature LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 3
·e70127
·
IF 3.4
Jingyu Lin,Lingzhi Nie,Wei Yin,Pengtu Zhang,Peiyuan Zuo,Puke Mi,Qixin Zhuang
The emerging electronic devices demand dielectric polymer films with high energy storage density over a wide temperature range. However, the mobility of charge carriers leads to unsatisfactory dielectric performance even for heat-resistant dielectric polymers such as polyetherimide (PEI). Therefore, to enhance the energy storage density of polymer dielectrics, it is critical to concurrently focus on increasing the dielectric constant and improving the breakdown strength by hindering the migration of electrons, which is highly correlated with the intrinsic bandgap structures of dielectrics. Inspired by the tunable bandgap structure of doped semiconductors, this work is aimed at strengthening the trapping of charge carriers depending on the construction of electron traps and the formation of electron–hole pairs, that is, to tailor the bandgap of ZnS 1−x O x via oxygen doping and the band structure at the ZnS 1−x O x /PEI interface region, thereby significantly enhancing the breakdown strength of the composite films. At room temperature and 450 kV mm −1 , the energy density ( U d ) of 0.4 vol% ZnS 0.7 O 0.3 /PEI reaches 5.7 J cm −3 with a charge–discharge efficiency ( η ) of 96.6%, which is 2.3 times that of pure PEI (2.5 J cm −3 , η = 86.2%). Moreover, the composite film exhibits excellent dielectric stability at high temperatures. At 150°C and 350 kV mm −1 , the U d remains 3.4 J cm −3 , with a high η of 89.1%, significantly higher than that of pure PEI (1.5 J cm −3 , η = 80.6%). This work provides a novel perspective for the design of high-performance dielectric composite films via interfacial engineering.
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
CHINESE JOURNAL OF POLYMER SCIENCE
·
2024
·
IF 4.1
Zhou Bai-Yang,Ma Ze-Tong,Zhong Shi-Long,Huang Zhen-Jie,Guo Qi,Feng Deng-Chong,Yuan Zhong-Ke,Lu Shao-Lin,Yang Yu-Zhao,Wang Cheng,Yu Ding-Shan,Chen Xu-Dong
The burgeoning growth of the new energy vehicles and aviation industry has escalated the need for energy storage capacitors capable of stable operation in harsh environments. The advent of metal-polyimide complexes has illuminated a novel approach for preparing temperature-resistant capacitors. However, the general application of these metal-polyimide complexes is impeded by the high dielectric loss and low breakdown strength, consequences of main-chain coordination and excessive metal ions content. Herein, our study proposes a novel polyimide-Cu complex material (POP-Cu) predicated on side-chain-type pyridine-Cu coordination, utilizing the structural backbone PMDA-ODA of mature commercial PI (Kapton) with reliable performance. Owing to the high degree of freedom afforded by the side chain with suppressed relaxation activation energy and the long-range electron delocalization formed by d - π coordination, the dielectric constant of this material containing merely 2.7 mol% Cu increases from 3.25 (POPI) to 5.58, while maintaining a remarkably low dielectric loss of 0.0066. Meanwhile, this material exhibits a substantial DC breakdown strength of 436.2 MV·m −1 and a high energy density of 5.42 J·cm −3 , coupled with superior mechanical and thermal properties. Even at 150 °C, it retains over 90% of its room-temperature energy density, demonstrating notable dielectric stability under high temperatures. These attributes underscore its promising application for capacitors operating in harsh environments.
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
危险品化学品经营许可证（带存储）