Reactive & Functional Polymers最新文献

{"title":"A novel cycloaliphatic epoxy monomer with inherent imide and phosphate groups enabled highly flame-retardant epoxy resin","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106011","DOIUrl":"10.1016/j.reactfunctpolym.2024.106011","url":null,"abstract":"<div><p>Cycloaliphatic epoxy resin exhibits excellent comprehensive properties suitable for application in electrical/electronic materials. However, its combustibility issue is more difficult to be handled in nature than aromatic epoxy resins and has not yet well addressed currently. The synergistic effect of multiple structures is the efficient way to solve this problem. Therefore, a novel cycloaliphatic epoxide monomer containing both imide and phosphate groups was designed via imidization and epoxidation in this study. The epoxide monomer BEMP with high purity was obtained by discussing the epoxidation conditions. Using 4-methyltetrahydrophthalic anhydride (MHHPA) as a hardener, the cured epoxy resin BMEP/MHHPA demonstrated inherently outstanding flame retardancy with a high limited oxygen index (LOI) value of 36.5% and achieved UL-94 V-0 rating. Additionally, BMEP/MHHPA showed a significant reduction of 70.5% in heat release rate (HRR) and 57.7% in total heat release (THR) compared to commercial ERL-4221/MHHPA. The synergistic effect of imide and phosphate groups contributed to strong charring ability and intumescent flame-retardant action, resulting in effectively isolating heat and oxygen, and inhibiting the production of volatile flammable components. This approach provides an efficient method for developing highly fire-safe cycloaliphatic epoxides for use in electrical/electronic applications.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141710802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of poly(carbosilane arylacetylene)s with thermal oxidation resistance","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106006","DOIUrl":"10.1016/j.reactfunctpolym.2024.106006","url":null,"abstract":"<div><p>The aerospace industry demands a resin matrix with excellent thermal oxidation resistance for advanced composites. A series of poly(carbosilane arylacetylene)s (PCSAs) resins with high silicon content were synthesized via arylacetylene Grignard reagents with polychlorocarbosilane polycondensation in this study. The cured PCSAs were obtained by heating at 150 °C for 2 h, 170 °C for 2 h, 210 °C for 2 h, and 250 °C for 4 h. The temperature at which PCSAs lose 5% weight (<em>T</em>_d5) is approximately 600 °C under a nitrogen atmosphere. The cured PCSAs do not exhibit a glass transition temperature in the range of 50 °C ∼ 450 °C. The cured PCSAs demonstrate outstanding thermal oxidation resistance, with a <em>T</em>_d5 of approximately 560 °C under the air atmosphere. The cured PCSA with high silicon content can retain up to 75% of its weight when exposed to flowing air for 480 h at 300 °C. The retention of mechanical properties of carbon fiber cloth reinforced PCSAs composites (CF/PCSAs) improves with increasing silicon content after 100 h of thermal aging under flowing air at 300 °C. The increase in silicon content is beneficial for reducing surface cracking of cured resins and preventing internal matrix oxidation. Moreover, cured PCSAs can serve as a precursor to be pyrolyzed at 1500 °C to form <em>β</em>-SiC crystal. These results suggest that PCSAs are suitable as a heat-resistant matrix for advanced composites.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141623968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Side chain liquid crystalline polysiloxane hydroxamic acids and their liquid crystalline behaviour","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106009","DOIUrl":"10.1016/j.reactfunctpolym.2024.106009","url":null,"abstract":"<div><p>The synthesis and properties of side chain polysiloxane hydroxamic acids have been described. The N-p substituted phenyl hydroxamic acids were synthesized by reacting p - allyloxy benzoyl chloride and acryloyloxy sebacoyl chloride with N-arylhydroxylamines in toluene medium, rendered basic with aqueous suspension of sodium bicarbonate at 0 °C or lower. The synthesized <em>N</em>-phenyl substituted hydroxamic acids were attached to poly(methylhydrosiloxane) via hydrosilylation reaction in the presence of platinum catalyst The polysiloxane hydroxamic acids were characterized by melting point, FT – IR, NMR and Mass spectral techniques. The liquid crystalline behaviour of the side chain polysiloxane hydroxamic acids with allyloxy and acryloylsebacoyloxy spacer have been studied by optical.</p><p>polansed microscopy and differential scanning calorimetry. Side chain liquid crystalline polysiloxane hydroxamic acids with allyloxy spacer (N-p substituted phenyl p-[(3-polysiloxane propyloxy) benzo] hydroxamic acids, (PHA – 1 to PHA −4) show nematic phases, while the second series with acryloylsebacoyloxy spacer (N-p-substituted phenyl (3-polysiloxane propanone) octyl carbonyloxy hydroxamic acids, (PHA – 5 to PHA – 8) show nematic as well as smectic phases. The liquid crystalline behaviour of the side chain polysiloxane hydroxamic acids with allyloxy and acrylsebacoyloxy spacer have been studied.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141636655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PDMS-based copolymers with polyurea blocks and 1,2,3-triazole blocks obtained by CuAAC polymerization for 3D printing","authors":"Kirill K. Bakanov ,&nbsp;Sofia N. Ardabevskaia ,&nbsp;Kseniya A. Bezlepkina ,&nbsp;Kseniia S. Klokova ,&nbsp;Artur E. Krupnin ,&nbsp;Alexander I. Buzin ,&nbsp;Dmitriy A. Khanin ,&nbsp;Sergei A. Kostrov ,&nbsp;Artem V. Bakirov ,&nbsp;Fedor V. Drozdov ,&nbsp;Sergey N. Chvalun ,&nbsp;Aziz M. Muzafarov ,&nbsp;Jun Zou ,&nbsp;Elena Yu. Kramarenko ,&nbsp;Sergey A. Milenin","doi":"10.1016/j.reactfunctpolym.2024.106005","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.106005","url":null,"abstract":"<div><p>Polydimethylsiloxanes with improved mechanical properties that can be processed by 3D printing are in high demand for scientific and practical applications. In our article, we proposed the synthesis of new PDMS copolymers with urethane and triazole fragments using the CuAAC reaction mechanism, as well as 3D printing with the obtained copolymers. Two types of copolymers, with molecular weights of 3000 and 6000 Da of PDMS block length, were prepared and characterized by GPC, IR spectroscopy, TGA, DSC, TMA, SAXS, and rheological measurements to determine their physicochemical properties. The synthesized copolymers were found to be suitable for processing by extrusion 3D printing. This demonstrated the ability to 3D print macroscale models of varying shapes and complexity. The resulting materials retained their printed shape over time.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141606545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ construction of silicon-containing carbon layer by hyper silicone-branched structure endows epoxy/carbon fiber composites with high strength and ablation resistance","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106004","DOIUrl":"10.1016/j.reactfunctpolym.2024.106004","url":null,"abstract":"<div><p>Epoxy/carbon fiber composites are widely used as structural materials in the aerospace field. Improving the ablation resistance of epoxy/carbon fiber composites is of great importance for the fabrication of highly integrated structural-thermal protection materials. In this study, a silicon-modified epoxy/carbon fiber composite was prepared by a hyperbranched structural design approach. By taking advantage of the excellent antioxidant properties of the silicone compounds generated by the pyrolysis of hyperbranched silicone structures, a dense char layer is rapidly constructed on the surface of composites. The characterization and thermal pyrolysis behavior of hyperbranched silicone-modified epoxy resins are analyzed. In the simulated aerodynamic environment of a high-speed vehicle (where the heat flow is 160 kW/m²), compared with epoxy/CF composites, the value of the mass loss rate of modified composites underwent a reduction exceeding 80%, accompanied by a 60.3 °C decrease in the maximum back-surface temperature. More significantly, the post-ablation mechanical properties were evaluated through a three-point bending test, revealing that the modified composites retained over 95% of their initial flexural strength and modulus after simulated pneumatic heating. This approach offers a new approach to manufacture structurally simple, integrated structure-thermal protection systems.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of the polyethylene polyamine-based flexible covalent organic frameworks and their application for capturing and fluorescence sensing iodine","authors":"Feng Zhu,&nbsp;Ya-Chen Wang,&nbsp;Tong-Mou Geng,&nbsp;Heng Xu","doi":"10.1016/j.reactfunctpolym.2024.106003","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.106003","url":null,"abstract":"<div><p>Effective uptake of radioactive steam waste in the fission process is of great vital for the safe use of nuclear energy. Nitrogen-rich polyethylenepolyamine provides effective adsorption sites for the capture of iodine, but triethylenediamine (TEDA)-impregnated activated carbon has the disadvantages of easy sublimation, poor safety, and poor regeneration capacity. Herein, we report five polyethylene polyamine-based (PEPA-based) flexible COFs for the first time which were synthesized by Schiff base polymerization reactions with the flexible knot [2,4,6-tris(4-formylphenoxy)-1,3,5-triazine (TPT–3–CHO)] and flexible linkers (PEPA). The PEPA-based flexible COFs possess large surface areas and strong iodine adsorption capacity, which can be reused. With the increase of the linker lengths, their BET-surface areas decreases, but their adsorption of iodine increase. When dispersed in polar organic solvents, the PEPA-based flexible COFs can fluorescently sense iodine through the electron transfer mechanism and the energy transfer mechanism.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141594964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly adhesive bioinspired membrane for efficient oil/water separation by optimization of synergistic effects of hierarchical structure and superhydrophobic modification","authors":"Sisi Ma,&nbsp;Hongbin Li,&nbsp;Zhuoran Cao,&nbsp;Wenying Shi,&nbsp;Huanhuan Fan","doi":"10.1016/j.reactfunctpolym.2024.106002","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.106002","url":null,"abstract":"<div><p>Superwetting membranes have good prospective for treatment of oil-containing wastewaters. However, development of highly adhesive superhydrophobic membranes with efficient oil-water separation performance remains a great challenge that needs to be addressed urgently. Herein, highly adhesive membrane surface with hierarchical structure were fabricated by <em>in-situ</em> TEOS hydrolysis and fluorinated modification. The interface bonding force between polyvinylidene fluoride (PVDF) and silica nanoparticles (SiO₂ NPs) was increased through the dopamine self-polymerization and adhesion. The hierarchical structure was obtained by simultaneously adjusting TEOS and ammonia contents. The three-dimensional hierarchical membrane structure which is similar to that of a rose petal was shown by SEM analysis. The obtained membrane showed a water contact angle of 158 ± 2°, while the oil contact angle approaches 0°. <em>In-situ</em> grown multi-scale SiO₂ NPs, perfluorooctyltriethoxysilane (FAS) brushes and dopamine can form a stable hierarchical surface which sustained superhydrophobicity/superoleophilicity when immersed in aqueous solutions at different pH values. Meanwhile, FAS brushes can serve as steric obstacles to efficiently repel water droplets during oil/water separation. The fabricated membrane possesses a high permeation flux and excellent separation properties (&gt; 98%). In addition, this highly adhesive coating modification and hierarchical design can be widely applied on the surfaces of different materials, giving an attractive potential application prospect, such as oil/water separation, antifouling surface, and superwetting materials.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141606533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photopolymerization-based 4D-printing of shape-memory materials containing high-performance polymers","authors":"Alena N. Nikishina ,&nbsp;Bato Ch. Kholkhoev ,&nbsp;Kseniia N. Bardakova ,&nbsp;Zakhar A. Matveev ,&nbsp;Zhanna I. Kurdanova ,&nbsp;Kamila T. Shakhmurzova ,&nbsp;Azamat A. Zhansitov ,&nbsp;Svetlana Yu. Khashirova ,&nbsp;Peter S. Timashev ,&nbsp;Vitaliy F. Burdukovskii","doi":"10.1016/j.reactfunctpolym.2024.106001","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.106001","url":null,"abstract":"<div><p>High-performance aromatic heterochain polymers are engineering thermoplastics with exceptional mechanical and thermal properties that have attracted great interest in various areas ranging from aerospace to biomedicine. However, there have been a number of difficulties to 3D-print materials based on such polymers with new promising performance characteristics. Herein, a number of new photosensitive compositions (PSCs) based on high-performance polyetherimide (PEI) or polysulfone (PSU), reactive functional monomer (<em>N</em>,<em>N</em>-dimethylacrylamide) and oligomer (bisphenol A ethoxylate diacrylate) has been developed. It has been shown that the use of the developed PSCs allows the formation of 3D-structures with high printing resolution by LCD 3D-printing. Subsequent thermal post-curing of 3D-printed green-state samples at 250°С for 1 h led to the fabrication of materials with the highest tensile strength (up to 41.9 ± 3.1 MPa), glass transition temperature (141 °C) and thermal stability (above 350 °C). In addition, 3D-printed structures demonstrate high-temperature shape memory effect with shape fixity ratio &gt; 99% and shape recovery ratio up to 97.1%.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141486448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-healing anti-corrosive coating using graphene/organic cross-linked shell isophorone diisocyanate microcapsules","authors":"Xiaoliang Meng ,&nbsp;Wei Xie ,&nbsp;Qu Yang ,&nbsp;Yi Cao ,&nbsp;Juanna Ren ,&nbsp;Abdulraheem S A Almalki ,&nbsp;Yongping Xu ,&nbsp;Taishan Cao ,&nbsp;Mohamed M. Ibrahim ,&nbsp;Zhanhu Guo","doi":"10.1016/j.reactfunctpolym.2024.106000","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.106000","url":null,"abstract":"<div><p>To enhance the anticorrosive performance of coatings in harsh corrosive environments, a graphene/isophorone diisocyanate (IPDI) microcapsule is prepared by in-situ polymerization. The self-healing and anticorrosive performance of coatings based on these microcapsules are studied. The microcapsule with cross-linked shells prepared in this study solves the problems of excessive size and insufficient strength of traditional microcapsules. The addition of microcapsules improves the anticorrosive performance of coatings. The shape of the microcapsules is in the form of round balls, and the average particle size and thickness of the microcapsules are in the range of 17–23 μm and 0.5–3.4 μm, which are conducive to the preparation of the coatings. The average strength of microcapsules is 20.64 MPa and the wrap-around rate reaches 68%. The microcapsules have an initial evaporation temperature of 231.3 °C， the graphene organic cross-linking shell enhances the strength and improves the thermal stability of microcapsules. The electrochemical impedance spectroscopy (EIS) indicates that the |Z|_{f=0.01 Hz} value of the coating with 10 wt% of microcapsule after 168 h of immersion is about 9.4 × 10⁹ Ω cm², nearly three orders of magnitude higher than that of the coating without microcapsule (6.9 × 10⁶ Ω cm²). Monitoring the artificial scratches of coating using a scanning electron microscope (SEM) for 24 h reveals that the microcapsule repairs the cracks well. It is demonstrated that the incorporation of graphene/IPDI microcapsules improves the anti-corrosive performance of the coating.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1381514824001755/pdfft?md5=f9f53d6ca1cf0f5a1c437c841b517ea9&pid=1-s2.0-S1381514824001755-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic polyurethane based composites as contactless valves in microfluidic applications","authors":"Antonio Veloso-Fernández ,&nbsp;Sara Muñana-González ,&nbsp;José Manuel Laza ,&nbsp;Asier Aguilera-Grande ,&nbsp;Daniel Salazar Jaramillo ,&nbsp;Leire Ruiz-Rubio ,&nbsp;Leyre Pérez-Alvaréz ,&nbsp;Jose Luis Vilas-Vilela ,&nbsp;Ana Catarina Lopes","doi":"10.1016/j.reactfunctpolym.2024.105999","DOIUrl":"https://doi.org/10.1016/j.reactfunctpolym.2024.105999","url":null,"abstract":"<div><p>Magnetoactive polymer composites have garnered significant attention for their potential use in diverse applications, owing to their rapid and reversible response to external magnetic fields. By incorporating magnetic nanoparticles (MNPs) into an elastomeric matrix, these composites exhibit unique properties under static or alternating magnetic fields. In this context, thermo-polyurethane-based magnetic active composites are promising materials for developing microfluidic system components such as valves and peristaltic pumps. In the current study, we investigated the utilization of cobalt ferrite (CoFe₂O₄) magnetic nanoparticles in conjunction with a non-toxic synthesis method for polyurethane. It was explored the impact, on the overall success of the process, of cobalt ferrite nanoparticles incorporation at various stages of the thermo-polyurethane (TPU) synthesis reaction. Finally, the effects of different amounts of MNPs on the physicochemical properties of the resulting composites and their behavior as actuators under the influence of a magnetic field, was investigated. Our studies reveal that the actuator response of the composites increases proportionally with the percentage of MNPs present.</p><p>Finally, the performance of a TPU/7.5% (<em>V</em>/V) CoFe2O4 composite strip as a flow control actuator within a microfluidic system was evaluated. This actuator responds to magnetic fields by bending, resulting in a 10% reduction in flow rate of microfluidic system. Reversing the magnetic field restores the flow rate to its initial value. Our cyclic tests illustrate the actuator's capacity to locally and temporarily modulate the microfluidic system's resistance. When combined with tailored TPU elasticity, these materials show significant potential for the fabrication of microfluidic valves and pumps.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1381514824001743/pdfft?md5=f59d22a02cb6e9b524bfed81a770c70f&pid=1-s2.0-S1381514824001743-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141486450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}