JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Meirong Wang,Ling Lin,Pingya Luo,Di Pu,Xinmin Zhang,Zheng Li,Hongdan Ao
In this investigation, a new micro-crosslinked anionic polymer resistant to elevated temperature and high salinity, PKDASN, was synthesized using 3-chloropropyltriethoxysilane (KMB703), N, N-Dimethylacrylamide (DMAM), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), N-vinyl caprolactam (NVCL), and sodium (4-vinyl phenyl)methanesulfonate (SVM) employing free radical polymerization in a water-based solution. The structure of PKDASN was analyzed using Fourier-transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, and X-ray photoelectron spectroscopy, while its microstructure was analyzed using scanning electron microscopy. Thermogravimetric analysis showed that the pyrolysis temperature of PKDASN was above 294°C. Adding KMB703 enables the polymer to form a dense and stable spatial network. This intensified polymer network could interact with bentonite via intermolecular force and Coulomb force and form a dual grid structure, which presents impressive stability and control of filtration in saltwater. This is mainly achieved through creating a “silane coupling layer” on the particle surface by KMB703, which facilitates the crosslinking and aggregation of the polymer, thereby reinforcing the polymer's framework. This implies that under high-temperature conditions of 230°C, 3 wt% PKDASN can improve the filtration effectiveness of drilling fluids and exhibit resistance to 15 wt% NaCl contamination. American Petroleum Institute filtration(FL API ) and High temperature and high pressure filtration(FL HTHP ) values were 4.6 and 23.0 mL, respectively. Therefore, this investigation provides a novel approach to utilizing the designated silane agent for the advancement of filtration loss additives in drilling fluids resistant to elevated temperature and high salinity.
研究领域:
材料科学
·
石油工程
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产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Yumin An,Jiabao Xu,Mingyao Song,Liwen Yan,Libin Zhao
In this work, a (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel was successfully prepared by combining airflow spinning and high-temperature pyrolysis method using rare earth carbonates as raw materials. XRD, TEM, and EDS analyses showed that the (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel exhibited a composite structure of defective fluorite and cubic zirconia phases after heat treatment at 1200 °C, with a uniform distribution of rare earth elements. The aerogel was able to achieve excellent compression resilience when compressed in liquid nitrogen, room temperature and alcohol lamp flame. In addition, the thermal conductivity of (Ce 0.2 Sm 0.2 Gd 0.2 Nd 0.2 Y 0.2 ) 2 Zr 2 O 7 -ZrO 2 ceramic fiber aerogel was about 31.9 mW·m -1 ·K -1 at room temperature, and the ceramic fiber aerogel could reduce the high temperature of 1200 °C to about 323 °C with 10 mm thickness and remain stable. The infrared reflectance of the ceramic fiber aerogel after heat treatment at 1000 °C is 91.7%, which demonstrates excellent thermal radiation shielding capability.
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 9
·4986-4994
·
IF 2.047
Cao Zhangyi,Xie Xi,Chen Xin,Yu Jiaqi,Liu Xiukun,Huang Yuanxing,Xu Xu,Lu Shaorong,Li Yuqi
The high wear and temperature resistance of electrode materials are the key issues to extend the application of triboelectric nanogenerators (TENG). The synergistic effect of Fe 3 O 4 and ionic liquid-modified graphene (IGNs) were used to enhance the wear resistance, heat resistance, and mechanical properties of polyimide (PI). Then, the output performance of the PI-based TENG in contact–separation mode was tested. The results show that the tensile strength and thermal decomposition temperature of the IGNs/Fe 3 O 4 /PI composites (2F2G) d increased by 57 MPa and 23°C, respectively, due to the synergistic effect of IGNs and Fe 3 O 4 . In addition, the friction coefficient and wear rate of the 2F2G decreased by 21% and 14%, respectively. The open-circuit voltage, short-circuit current, and peak power density of the 2F2G-based TENG were 65 V, 2.48 μA, and 1.34 W/m 2 at 1 Hz, respectively. Owing to the high wear and temperature resistance of the 2F2G, the 2F2G-based TENG has a broad application prospect in the fields of wear- or high-temperature-resistant energy harvesting and self-powered sensors. Graphical Abstract
研究领域:
材料科学
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能源技术
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纳米科技
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产品关联
DOI
高影响因子
MACROMOLECULAR SYMPOSIA
·
2025
·Vol. 414
·期 4
·e70085
·
IF 0
Chenjun Zhang,Xi Zhang,Xiaodan Liu,Yiheng Li,Xiaoqi Wang,Xu Jin,Man Shen,Lanqiong Zhang
Specialty engineering rubber has been put forward with more stringent requirements. In this paper, the material properties and reinforcing effects of several fillers were investigated, and polyamide was selected as the target reinforcing material to modify hydrogenated nitrile butadiene rubber (HNBR) in order to improve the temperature resistance of the system. It was concluded that the mechanical properties of PA1212/HNBR system were better than those of PC/HNBR system at 120°C. The optimum PA1212 additive amount was determined through the mechanical property test and dispersion state observation of the blended system, which proved that the PA1212 reinforcing system significantly improved the heat resistance and mechanical properties of HNBR. The modified HNBR has excellent tensile strength and elasticity, which effectively improves the reliability and service life of the sealing equipment under high temperature conditions, and provides experimental references and theoretical basis for the research and development of high-temperature resistant rubber.
研究领域:
材料科学
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高分子科学
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机械工程
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化学工程
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产品关联
DOI
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 18
·e55316
·
IF 2.7
Jifa Bian,Zhongbin Ye,Xuecheng Zheng,Chengwen Deng,Lei Tang
This work used aqueous solution free radical polymerization to create polymers of 2-acrylamide-2-methylpropane sulfonic acid, itaconic acid, and allyl polyoxyethylene ether as a high-temperature resistant retarder (APMS/IA/APEG, from now on referred to as AIA). Gel permeation chromatography, fourier transform infrared (FTIR), proton nuclear magnetic resonance ( 1 HNMR), and thermo-gravimetric analysis (TG) were used to characterize their molecular structure and characteristics. Tests were conducted on the thickening time, rheological characteristics, and compressive strength of AIA in cement slurries. The cement slurry thickened for 276 min at 180°C during the test, and the cement stone's 24-h compressive strength was consistently more than 20 MPa. The hydration products were analyzed using x-ray diffractometer and scanning electron microscopy methods, which were then coupled with molecular dynamics simulations to elucidate the AIA retarding mechanism. When AIA is added to a cement slurry, it forms a chelate structure with Ca 2+ and a strong adsorption layer on the surfaces of the cement particles. This stops the cement from hydrating. The AIA side chain, APEG, can wrap the active group in AIA at low temperatures. AIA exposes more adsorption groups because of the APEG chains stretching at higher temperatures. AIA can, therefore, be used for deep well operations at high temperatures.
研究领域:
材料科学
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石油工程
·
高分子化学
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水泥化学
·
胶体与界面科学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Cheng-Ye Zhu,Jia-Hui Xin,Chao Zhang,Hao-Cheng Yang,Hong-Qing Liang,Zhi-Kang Xu
Nanofiltration membranes integrating superior separation performance with robust operational stability are imperative for some harsh scenarios such high temperature and acid environment. Nevertheless, the simultaneous attainment of these two attributes remains a formidable challenge for benchmark polyamide nanofiltration membranes due to their unstable molecular structure under these scenarios. Herein, we report a kind of polyurea nanofiltration membranes with twisted and rigid skeleton, enabling exceptional dye/salt separation performance and remarkable resistance to strong acid and elevated temperature. The key to this comprehensive performance lies in employing tetrakis(4-aminophenyl)methane as the amine monomer. Its moderate reactivity and twisted geometry jointly facilitate the formation of a suitably loose polymer network by slowing polymerization and preventing dense chain packing, while the rigid aromatic structure confers enhanced robustness through a durable polymer backbone. Our polyurea membranes demonstrate rejections exceeding 96.7 % for six dyes with molecular weights above 586 Da, while maintaining low rejections below 20.0 % for four representative inorganic salts. The optimized membranes exhibit an impressive Congo Red/Na 2 SO 4 selectivity of 121.9 with a high water permeance of 22.3 L m −2 h −1 bar −1 , outperforming the commercial nanofiltration membrane NF270. Furthermore, the membranes retain stable separation performance even under 80 °C or after exposure to 20 wt% H 2 SO 4 for 30 days, which is attributed to their rigid aromatic backbone and chemically stable urea linkages. This advancement adds a novel dimension for exploiting highly selective and durable nanofiltration membranes suited for demanding separation processes.
研究领域:
材料科学
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膜分离技术
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高分子化学
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纳米技术
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiangtao Li,Yunjia Xue,Xueying Zhang,Fan Zhang,Wenhao Hu,Jiachen Liu
The SiC-ZrO 2 coating was prepared on the surface of aluminosilicate ceramic fiber fabric (ASFF) to enhance the radiation heat dissipation. However, the Si-sol in the SiC-ZrO 2 coating caused the fiber to adhere together at high temperatures. The brittle fracture of the ASFF led to a deterioration in its temperature resistance. In this paper, an Al 2 O 3 interface was prepared on the surface of ASFF by spraying alumina precursor. The Al 2 O 3 interface prepared by 3.0 wt% alumina precursor was uniformly covered on the fiber surface. The flexibility of ASFF/Al 2 O 3 /SiC-ZrO 2 was maintained after static oxidation at 1300 °C for 1 h. The tensile strength of ASFF/Al 2 O 3 /SiC-ZrO 2 at 1200 °C were increased from 5 to 7 MPa to 21.35 ± 2.58 MPa. The Al 2 O 3 interface not only limited the direct contact between Si-gel and fiber, but also reacted with Si-gel to produce mullite at high temperature. The problem of fiber adhesion caused by Si-sol in ASFF matrix was solved. Additionally, the SiC-ZrO 2 coating reduced the surface temperature of ASFF rom 1700 °C–1300 °C. Combining the radiation performance of SiC-ZrO 2 coating and the isolation effect of the Al 2 O 3 interface, ASFF/Al 2 O 3 /SiC-ZrO 2 was able to operate continuously for 300 s under the 1700 °C butane-oxygen flame heating condition.
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DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Tao Huang,Pengju Xu,Dinghan Wang,Wanxin Li,Ruohan Wei,Qian Ji,Hong Lin,Jiefeng Shen
An organic–inorganic hybrid microsphere with excellent thermal expansion properties was successfully synthesized and investigated. This study systematically examined the effects of various types and concentrations of silica-modified acrylic monomers on the thermal expansion characteristics of the microspheres. Furthermore, to enhance the high-temperature durability of thermal expansion microspheres (TEMs), an acrylate-modified polyhedral oligomeric silsesquioxane (MP-POSS) with high compatibility was synthesized as a cross-linker, and its synergistic effect on the thermal properties of TEMs was thoroughly analyzed. The core/shell polymers were characterized in terms of their chemical structures, thermal expansion behaviors, and morphology. Experimental results indicated that when triisopropylsilyl methacrylate (TISMA) was incorporated at 20 wt % and the bifunctional acrylate ester of MP-POSS was utilized as the cross-linker, the optimized TEMs exhibited a maximum expansion temperature of 230 °C, which was 23 °C higher than that of the conventional acrylate-based TEMs. Additionally, the foamed microspheres maintained their structure at 190 °C for 39 min without significant collapse. It was believed that the hybrid microspheres would provide a potential application value to fabricate lightweight materials that require high-temperature treatment, such as ceramics, plastics, rubber, and other industrial products.
研究领域:
材料科学
·
高分子化学
·
纳米技术
·
热分析
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Cheng Chen,Dongyue Zhao,Zhong Xu,Shibin Nie,Zongquan Zhao,Jingwen Wang,Xinyu Huang,Wei Zhao
The fire accidents caused by coal spontaneous combustion seriously endanger the safety of mine production, and gel foam has been utilized to control coal spontaneous combustion. However, most gel foams exhibit a tendency to rupture under high-temperature conditions, which limit their fire extinguishing efficiency. To address this issue, a novel high-temperature carbonizing intumescent gel foam (ETPSGF) was prepared by introducing an intumescent flame retardants system (ED) based on expandable graphite (EG) and 9,10-Dihydro-9-oxa-10-phospha-phenanthrene-10-oxide (DOPO). The results show that ED was successfully incorporated into the gel foam system, with the foam expansion volume reaching 6.3 times and the half-life increasing to 19 days. Furthermore, the ETPSGF can form a foam film with the thickness of 1.52 cm, and it also can form a worm-like intumescent char layer under high-temperature condition. The CO inhibition efficiency of the ETPSGF-treated coal at 200 °C reaches 70.5 %, and the crossing point temperature delayed by 23.6 °C. In the fire extinguishing test, the ETPSGF-treated coal is rapidly cooled from 700 °C to 35 °C within 60 min with no re-ignition phenomenon, indicating that ETPSG exhibits fire extinguishing efficiency under high-temperature conditions. This work provides a new idea for the design of high-performance gel foam, and promotes the development of gel foam technology for preventing and controlling coal spontaneous combustion.
研究领域:
消防安全工程
·
矿山安全
·
材料科学
·
阻燃技术
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Lingyuan Wang,Lanfeng Hui,Weiyin Su
We prepared super-hydrophobic nanocellulose films using a non-toxic octadecylamine/polydopamine system. Octadecylamine, a low surface energy material, was used to provide hydrophobic alkyl long chains. Polydopamine was produced by dopamine under alkaline conditions, creating an adhesive substance, which reinforced the hydrophobic long chains and increased the surface roughness of nanocellulose. The effects of reagent concentration, reaction temperature, and reaction time on hydrophobicity were then investigated. The results showed that with a 1:1 mass ratio of nanocellulose to octadecylamine, and reacting at 60 °C for 4 h, the contact angle of the obtained composite membrane reached 168.2°. Scanning electron microscope images revealed that the modified nanocellulose had a smaller particle size and more uniform distribution, which effectively improved the hydrophobicity of the nanocellulose. Thus, the green preparation of superhydrophobic films with high-temperature resistance and wear resistance was realized, which contributed to the high-value utilization of nanocellulose.
研究领域:
材料科学
·
纳米技术
·
表面化学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Guofeng Yang,Wenlei Liu,Bingchao Feng,Wen Song,Maliang Zhang,Kunmei Su,Haiyang Yang,Zhenhuan Li
Polyphenylene sulfide (PPS) nonwoven filters are extensively utilized in industrial filtration processes because of their exceptional resistance to solvents and cost-effectiveness. However, the high temperature exhaust gases with strong oxidation can irreversibly corrode PPS nonwovens, and thus reduce their service life. Here, an oxidation-modified PPS (OPPS) nonwoven is reported that assembles excellent oxidation and high temperature resistance to achieve separation and filtration under extreme conditions. This OPPS nonwoven is resistant to oxidizing acid solutions and high temperatures up to 350 °C. In addition, the OPPS nonwoven does not melt when burned in a flame. Practical application tests demonstrated that the PM10–2.5 filtration efficiency of OPPS nonwoven reaches 90.4%, which is 20% higher than that of PPS nonwoven. Impressively, the OPPS nonwoven enables a PM10–2.5 filtration efficiency of 92.5% and 94.6% even after aging by 60% HNO3 solution and 350 °C, respectively. The cost-effectiveness and high performance of OPPS nonwoven present substantial advantages for flame retardant, thermal insulation, and dust filtration applications.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2024
·
IF 1.2
Jingwen Ren,Jipeng Dou,Long Zhang,Shan He,Yan Qin,Huadong Fu
This work mainly studied the influence of SiC and Si3N4 composite fillers on the ablation performance of silica/phenolic composites. The effect of Si3N4 content on the mechanical and ablative properties of the composites was investigated, and the bridging effect between the two different ceramic fillers was analyzed. The results indicated that the mechanical properties and ablation properties of the composite were improved due to the combined effect of the SiC and Si3N4. When the content of Si3N4 was 36phr, the flexural strength at room temperature was 114.6 MPa, the flexural strength after 1200 °C treatment was 18.38 MPa, and the linear ablation rate was 0.011 mm/s in the 1600 °C oxyacetylene ablation test for 30s, while the flexural strength without Si3N4 at room temperature was 105.4 MPa, the flexural strength after 1200 °C treatment was 10.35 MPa, and linear ablation rate was 0.061 mm/s in the 1600 °C oxyacetylene ablation test for 30s. The bridges between the Si3N4 and SiC ceramic fillers can form SiO2, SiCN and Si2N2O in the high temperature environment, which helps fill the pores on the surface of the composite, forming an effective protective layer structure and improving the high temperature and erosion resistance of the composites.
研究领域:
材料科学
·
复合材料
·
高温材料
·
陶瓷填料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）