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学者姓名：陈怀银
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Abstract ：
In recent years, loading antioxidants onto inorganic nanoparticles has attracted increasing interest. However, the existing studies not only have low antioxidant loading efficiency, but also ignore the relationship between structural changes and antioxidant properties before and after antioxidant modification, greatly limiting the improvement of the antioxidant properties of composites and their application scope. In this work, we successfully prepared bis-hindered phenolic antioxidants containing silica hydroxyl groups (Bis-mAO) and loaded them onto silicon dioxide (SiO 2 ) to get the nanocomposites (Bis-mAO-SiO 2 ). The melt blending method further prepared the corresponding polyphenylene sulfide (PPS)/Bis-mAO-SiO 2 composites. The results showed that the higher antioxidant loading and more suitable antioxidant structure made Bis-mAO-SiO 2 possess excellent antioxidant properties. The prepared PPS/Bis-mAO-SiO 2 composites remained stable under high temperatures and oxygen environments. Impressively, the maximum weight loss rate temperature of PPS/Bis-mAO-SiO 2 was increased by 11.60 degrees C compared to that of PPS, and after accelerated thermal oxidation at 220 degrees C for 24 h, the relative intensity ratio between O and C of PPS/Bis-mAO-SiO 2 only increased to 0.086, much lower than 0.132 for PPS. Moreover, the viscosity of PPS/Bis-mAO-SiO 2 only increased by 29.05 % and 88.75 % after accelerated thermal oxidation at 220 degrees C for 12, 24 h. Compared, PPS ' s viscosity increased substantially by 79.22 % and 250.3 %, respectively. This meant that the Bis-mAO-SiO 2 successfully achieved a synergistic integration of high antioxidant properties and thermal stability, implying that the work offered a strategy for fabricating hightemperature resistant antioxidant composites.
Keyword ：
Hindered phenolic Hindered phenolic Polyphenylene sulfide Polyphenylene sulfide Rheological properties Rheological properties Silicon dioxide Silicon dioxide Thermal oxidation stability Thermal oxidation stability
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| GB/T 7714 | Cai, Weilong , You, Jian , Wang, Wei et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
| MLA | Cai, Weilong et al. "Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS" . | CHEMICAL ENGINEERING JOURNAL 487 (2024) . |
| APA | Cai, Weilong , You, Jian , Wang, Wei , Chen, Huaiyin , Liu, Longmin , Ma, Yuhan et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS . | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
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Superhydrophobic coatings show great application prospect in various fields such as corrosion protection, antiicing, waterproof and oil-water separation, due to their unique properties. However, the poor mechanical stability and the preparation complexity severely limit their practical application. In this study, superhydrophobic epoxy coatings with excellent mechanical stability were facilely constructed based on fluoridation modification of amine curing agent and TiO2 nanoparticles. Epoxy curing agent, diethyltriamine, was fluorinated by the reaction with heptafluorobutyric acid to obtain the required low surface energy. Meanwhile, fluorinated TiO2 nanoparticles were prepared through the reaction with 1 H,1 H,2 H,2H-perfluorooctanetriethoxysilane and further used for generating the roughness. The properties of the coatings were adjusted by the addition amount ratio of TiO2 nanoparticles to epoxy resin. The performance tests of water wetting, abrasion resistance, and corrosion resistance of the coatings were carried out. The results show that the hydrophobicity of epoxy coating is greatly improved after fluoridation modification of amine curing agent, and the greater the amount ratio fluorinated TiO2 nanoparticles to epoxy resin, the higher hydrophobicity of the modified coating. The modified coating prepared under optimal conditions displays excellent abrasion resistance, self-cleaning and anticorrosion performances. The electrochemical impedance spectroscopy tests in 3.5 wt% NaCl solution reveal that the hydrophobically modified epoxy coating has the largest charge transfer resistance, which is 8 orders of magnitude larger than that of uncoated Q235 steel. This work provides a simple method for preparation of superhydrophobic epoxy coatings with excellent mechanical stability, and will enlighten researchers to develop more superhydrophobic coatings and their applications.
Keyword ：
Anti-corrosion Anti-corrosion Epoxy coatings Epoxy coatings Fluoridation Fluoridation Hydrophobicity Hydrophobicity Self-cleaning Self-cleaning
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| GB/T 7714 | Chen, Haoxiang , Su, Feifei , Wang, Zhonghe et al. Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
| MLA | Chen, Haoxiang et al. "Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances" . | MATERIALS TODAY COMMUNICATIONS 41 (2024) . |
| APA | Chen, Haoxiang , Su, Feifei , Wang, Zhonghe , Li, Congxiang , Fan, Zhihong , Zhang, Dongfang et al. Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances . | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
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Polyphenylene sulfide (PPS), commonly used as a core material for high -temperature flue gas treatment, exhibits elevated viscosity when processed even at temperature exceeding 280 degrees C. In this study, a novel high-flowability PPS -based composite was fabricated through the incorporation of graphitic carbon nitride (g-C3N4) via a wellestablished melt extrusion procedure. The enhancement of flowability in PPS was verified, and the material's texture structures and fundamental properties of composites with varying contents were determined. The composites exhibit well -dispersed g-C3N4, a significant reduction in shear viscosity (>10 %), a notable increase in melt index (>30 %), improved crystallinity, and comparable or superior performance compared to pure PPS. When the g-C(3)N(4 )was introduced into the PPS matrix, a phase -separated composite structure was formed. This structure reduces the entanglement degree between the PPS molecular chains and provides more space for freemovement of the PPS chains, and thus the improvement in flowability for the composites can be clearly demonstrated. Therefore, g-C(3)N(4 )can be used as a novel flow modifier to enhance the flowability and stability of PPS resin without compromising its fundamental properties, which offers significant prospects for improving productivity, optimizing energy usage, and managing costs for PPS -based products.
Keyword ：
Graphitic carbon nitride (g-C3N4) Graphitic carbon nitride (g-C3N4) High flowability High flowability Melt blending Melt blending Phase-separated structure Phase-separated structure Polyphenylene sulfide (PPS) Polyphenylene sulfide (PPS)
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| GB/T 7714 | Cao, Hong , Zhang, Bing , Wang, Wei et al. Development of high-flowability melt PPS-based composites through blending with g-C3N4 [J]. | POLYMER , 2024 , 293 . |
| MLA | Cao, Hong et al. "Development of high-flowability melt PPS-based composites through blending with g-C3N4" . | POLYMER 293 (2024) . |
| APA | Cao, Hong , Zhang, Bing , Wang, Wei , Li, Yongzhao , Jia, Mengke , Yu, Weihe et al. Development of high-flowability melt PPS-based composites through blending with g-C3N4 . | POLYMER , 2024 , 293 . |
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Organic solvent nanofiltration (OSN) is a green, energy-saving, and highly efficient emerging membrane separation technology, and there is an urgent need for robust, easy-to-process OSN membranes with high permeance and small solute selectivity for industrial applications. Herein, we propose a new strategy for accurately designing novel OSN membranes. Specifically, a polyamide (PA) interlayer was synthesized in-situ on the surface of homogeneous reinforced poly(p-phenylene terephthamide) (PPTA) hollow fiber membrane by interfacial polymerization (IP) using both ultra-low concentrations piperazine (PIP, 0.05 wt%) and trimesoyl chloride (TMC, 0.005 wt%), and then a defect-free and dense PPy layer was deposited on top of the hydrophilic PA interlayer by chemical vapor deposition (CVD) process to prepare PA/PPy composite membranes with spherical cluster or strip cluster "Turing-like" structure. The resulting PA/PPy composite membranes presented an excellent high selective permeability, the dimethylacetamide (DMAc) permeability was 21.1 Lm(-2)h(-1)MPa-1, and the molecular weight cut-off (MWCO) was as low as 185 Da. A 30-hour OSN test at elevated temperatures (80 degrees C) and in organic solvent (DMAc), as well as a one-month immersion test in ethanol and DMAc at room temperature, demonstrated superior separation performance and structural stability of the membranes, indicating their application potential in harsh solvent systems. Our novel method for developing nanoscale ordered structured PA/PPy composite membranes offers great potential for the development of multilevel structural designs in the preparation of high-performance OSN membranes with potential industrial applications.
Keyword ：
Chemical vapor deposition Chemical vapor deposition Hollow fiber Hollow fiber Interfacial polymerization Interfacial polymerization Interlayer Interlayer Organic solvent nanofiltration Organic solvent nanofiltration Poly(p-phenylene terephthamide) Poly(p-phenylene terephthamide)
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| GB/T 7714 | Lai, Xing , Wang, Chun , Chen, Huaiyin et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 . |
| MLA | Lai, Xing et al. "Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration" . | SEPARATION AND PURIFICATION TECHNOLOGY 338 (2024) . |
| APA | Lai, Xing , Wang, Chun , Chen, Huaiyin , Zhu, Tianxue , Huang, Jianying , Xiao, Changfa et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 . |
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Flexible thermal insulation membrane plays a key role in outdoor wear of human body and thermal management of electronic products. This study used electrospinning to prepare thermal insulation hollow silica/polytetrafluoroethylene (HSi/PTFE) fiber membranes. HSi were prepared using tetraethylorthosilicate as the silicon source and hydrothermal carbon spheres as templates. A spinning solution of PTFE containing the HSi was used to prepare fiber membranes. The heat transfer resistance of the fiber is improved by embedding HSi into the PTFE fiber, resulting to improved heat insulation capability of the fiber membrane. The influence of HSi content on the thermal insulation performance of PTFE fiber membrane was studied. When the HSi content was 5 %, the fiber membrane showed the lowest thermal conductivity (0.0197 W/(m·K)), which was not only lower than most fiber thermal insulation materials, but also had excellent tensile properties (tensile deformation capacity of 168 %), which was convenient for practical application. In addition, this kind of fiber membrane also has high hydrophobicity (water contact angle of 147°), effectively reducing the influence of moisture on thermal insulation performance. This work presents innovative prospects for the future advancement of thermal insulation materials. © 2024 Elsevier Ltd
Keyword ：
Electrospinning Electrospinning Fiber membrane Fiber membrane Hollow silica Hollow silica Polytetrafluoroethylene Polytetrafluoroethylene Thermal insulation Thermal insulation
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| GB/T 7714 | Wang, G. , Wang, L. , You, J. et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning [J]. | Applied Thermal Engineering , 2024 , 255 . |
| MLA | Wang, G. et al. "Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning" . | Applied Thermal Engineering 255 (2024) . |
| APA | Wang, G. , Wang, L. , You, J. , Yang, Y. , Wang, Y. , Wang, W. et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning . | Applied Thermal Engineering , 2024 , 255 . |
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Dinitroaromatics are valuable organic compounds. However, the high value of these compounds is accompanied by significant risks and formidable challenges. Herein, we report a safe and highly efficient method for the dinitration of various aromatic compounds, using KNO3 as nitrating agent, polyphosphoric acid as solvent and catalyst. This approach provides a safer and more efficient alternative to the traditional mixed acid system, making it suitable for a range of substrates, especially highly deactivated arenes.
Keyword ：
Dinitration Dinitration Dinitroaromatics Dinitroaromatics KNO3 KNO3 PPA PPA
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| GB/T 7714 | Jia, Yixiong , Wen, Bin , Nan, Peiran et al. Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition [J]. | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) . |
| MLA | Jia, Yixiong et al. "Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition" . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY 28 . 1 (2024) . |
| APA | Jia, Yixiong , Wen, Bin , Nan, Peiran , Chen, Huaiyin , Chen, Xingquan , Li, Shiyun . Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) . |
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The hyperbranched hydroxyl-rich water-soluble beta-cyclodextrin polymer (beta-CDp) is synthesized by the action between beta-cyclodextrin and 1, 4-butanediol diglycidyl ether with a facile and environmentally friendly method, which is systematically confirmed using Fourier transform infrared spectroscopy (FTIR), ray diffraction (XRD) and thermogravimetric (TG). A water-soluble PAAS-beta-CDp-PAA binder is prepared the esterification reaction between partially neutralized sodium polyacrylate (PAAS), beta-CDp, and polyacrylic acid (PAA). Moreover, the optimized PAAS6-beta-CDp1-PAA3 binder, with a three-dimensional (3D) cross-linked network structure constructed by covalent bonds, hydrogen bonds, and electrostatic interactions, displays stronger adhesion between the active material and the current collector, effectively promotes the diffusion of Li+, and maintains the structural integrity of the electrode during charge-discharge cycling. Thus PAAS6-beta-CDp1-PAA3 electrode exhibits a higher initial discharge specific capacity of 3869 mAh g-1 with columbic efficiency of 89.79% at 200 mA g-1, and a discharge specific capacity of 2513 mAh g-1 with capacity retention rate of 71.10% is achieved after 100 cycles.(c) 2022 Published by Elsevier
Keyword ：
Binder Binder ?-cyclodextrin polymer ?-cyclodextrin polymer Polyacrylic acid Polyacrylic acid Silicon anode Silicon anode Sodium polyacrylate Sodium polyacrylate
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| GB/T 7714 | Zheng, Feng , Tang, Zhenyu , Lei, Yonggang et al. PAAS-beta-CDp-PAA as a high-performance easily prepared and water- soluble composite binder for high-capacity silicon anodes in lithium-ion batteries [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 932 . |
| MLA | Zheng, Feng et al. "PAAS-beta-CDp-PAA as a high-performance easily prepared and water- soluble composite binder for high-capacity silicon anodes in lithium-ion batteries" . | JOURNAL OF ALLOYS AND COMPOUNDS 932 (2023) . |
| APA | Zheng, Feng , Tang, Zhenyu , Lei, Yonggang , Zhong, Rui , Chen, Huaiyin , Hong, Ruoyu . PAAS-beta-CDp-PAA as a high-performance easily prepared and water- soluble composite binder for high-capacity silicon anodes in lithium-ion batteries . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 932 . |
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The hydrophobic nanocomposites of reduced graphene oxide (RGO) and Fe3O4 (RGO/Fe3O4) were prepared by a one-pot process through co-precipitation under alkaline conditions. The microwave absorption performance of the RGO/Fe3O4 nanocomposites was analyzed according to their electromagnetic parameters. The results showed that the RGO/Fe3O4 nanocomposites displayed better absorbing performance than the pristine Fe3O4 nanoparticles, owing to the synergistic effect of Fe3O4 and RGO. The maximum reflection loss (RL) of the RGO/Fe3O4 nanocomposites with a thickness of 2 mm reached -45.7 dB at 13.3 GHz, and the bandwidth (RL < -10 dB) ranged from 11.5 to 16.5 GHz. However, the maximum RL of the Fe3O4 nanoparticles with a thickness of 5 mm only reached -5.3 dB at 5.7 GHz. The RGO/Fe3O4 nanocomposites have a great potential application in high-performance electromagnetic microwave absorbing.
Keyword ：
co-precipitation co-precipitation electromagnetic properties electromagnetic properties ferroferric oxide ferroferric oxide hydrophobicity hydrophobicity reduced graphene oxide reduced graphene oxide
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| GB/T 7714 | Chen, Xingtian , Du, Shumin , Hong, Ruoyu et al. Preparation of RGO/Fe3O4 Nanocomposites as a Microwave Absorbing Material [J]. | INORGANICS , 2023 , 11 (4) . |
| MLA | Chen, Xingtian et al. "Preparation of RGO/Fe3O4 Nanocomposites as a Microwave Absorbing Material" . | INORGANICS 11 . 4 (2023) . |
| APA | Chen, Xingtian , Du, Shumin , Hong, Ruoyu , Chen, Huaiyin . Preparation of RGO/Fe3O4 Nanocomposites as a Microwave Absorbing Material . | INORGANICS , 2023 , 11 (4) . |
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The composites of 3,4,9,10-perylene tetracarboxylic acid doped polyaniline (PTCA-PANI) have been successfully fabricated by oxidative polymerization method in hydrochloric acid solution. FTIR, SEM and XRD were employed to characterize the composition, morphology and structure of PTCA-PANI composites. Thermalgravimetric analysis results showed that PTCA-PANI composites had better thermal stability than PANI. The microwave absorption performance of the obtained composites was evaluated by measuring the reflection loss (RL) values. The widest absorption bandwidth of the optimal PTCA-PANI (PTCA-PANI04) composites could reach to 4.4 GHz (11.9-16.3 GHz) at the absorber thickness of 2.0 mm, while the minimum RL was -27.8 dB. And the absorbing frequency could be regulated in the range of 3.8-18 GHz by adjusting the absorber thickness. Furthermore, the corrosion protection performances of the prepared materials incorporated epoxy coatings were investigated by electrochemical impedance spectroscopy and potentiodynamic polarization. The results indicated that PTCA-PANI04 incorporated coating displayed a long-term excellent anti-corrosion efficiency, which was 99.98% after 15 days' immersion in 3.5% NaCl solution, owing to the passivation and barrier effects of PTCA-PANI04 composites. This work can provide a reference for the development of new materials with electromagnetic shielding and corrosion protection dual-function.
Keyword ：
Anti-corrosion Anti-corrosion Electromagnetic shielding material Electromagnetic shielding material Polyaniline Polyaniline PTCA PTCA
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| GB/T 7714 | Chen, Xingtian , Hong, Ruoyu , Chen, Huaiyin . Fabrication of PTCA-PANI composites for electromagnetic wave absorption and corrosion protection [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2022 , 648 . |
| MLA | Chen, Xingtian et al. "Fabrication of PTCA-PANI composites for electromagnetic wave absorption and corrosion protection" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 648 (2022) . |
| APA | Chen, Xingtian , Hong, Ruoyu , Chen, Huaiyin . Fabrication of PTCA-PANI composites for electromagnetic wave absorption and corrosion protection . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2022 , 648 . |
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A new type of ternary core-shell composites, carbonyl iron powder@Fe3O4@polyaniline (CIP@Fe3O4@PANI) has been successfully prepared by a two-step method. The morphology, structure, composition, and the performances of microwave-absorbing and corrosion resistance of the prepared composites were investigated via a series of characterization methods. Fe3O4 surrounding CIP could adjust the electromagnetic parameter and enhancing the impedance matching of CIP and space electromagnetic waves, while PANI could adjust the absorbing frequency band and prevent the corrosion of CIP particles. The test results indicated that CIP@Fe3O4@PANI composites had superior magnetic properties, oxidation resistance, and high saturation magnetization as well as good stability in high temperature air atmosphere. Besides, the CIP@Fe3O4@PANI contained coating showed better corrosion resistance than neat epoxy and CIP coating. Due to the excellent properties, CIP@Fe3O4@PANI composites can be an outstanding candidate for the rapid development of broadband shielding and anticorrosive materials.
Keyword ：
Carbonyl iron powder Carbonyl iron powder Impedance matching Impedance matching Oxidation resistance Oxidation resistance Polyaniline Polyaniline Saturation magnetization Saturation magnetization
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| GB/T 7714 | Chen, Xingtian , Zhang, Di , Chen, Huaiyin et al. Preparation and characterization of CIP@Fe3O4@PANI composites [J]. | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2021 , 628 . |
| MLA | Chen, Xingtian et al. "Preparation and characterization of CIP@Fe3O4@PANI composites" . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 628 (2021) . |
| APA | Chen, Xingtian , Zhang, Di , Chen, Huaiyin , Hong, Ruoyu . Preparation and characterization of CIP@Fe3O4@PANI composites . | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 2021 , 628 . |
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