|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Achieving over 16% efficiency for single-junction organic solar cells显示文摘To achieve high photovoltaic performance of bulk hetero-junction organic solar cells(OSCs), a range of critical factors including absorption profiles, energy level alignment, charge carrier mobility and miscibility of donor and acceptor materials should be carefully considered. For electron-donating materials, the deep highest occupied molecular orbital(HOMO) energy level that is beneficial for high open-circuit voltage is much appreciated. However, a new issue in charge transfer emerges when matching such a donor with an acceptor that has a shallower HOMO energy level. More to this point, the chemical strategies used to enhance the absorption coefficient of acceptors may lead to increased molecular crystallinity, and thus result in less controllable phase-separation of photoactive layer. Therefore, to realize balanced photovoltaic parameters, the donor-acceptor combinations should simultaneously address the absorption spectra, energy levels, and film morphologies. Here, we selected two non-fullerene acceptors, namely BTPT-4F and BTPTT-4F, to match with a wide-bandgap polymer donor P2F-EHp consisting of an imidefunctionalized benzotriazole moiety, as these materials presented complementary absorption and well-matched energy levels. By delicately optimizing the blend film morphology, we demonstrated an unprecedented power conversion efficiency of over 16% for the device based on P2F-EHp:BTPTT-4F, suggesting the great promise of materials matching toward high-performance OSCs. | Baobing Fan Difei Zhang Meijing Li Wenkai Zhong Zhaomiyi Zeng Lei Ying Fei Huang Yong Cao | 2019 | Science China Chemistry2019，62，6： | 38 |
| 2 | A review on machinability of carbon fiber reinforced polymer(CFRP)and glass fiber reinforced polymer(GFRP)composite materials显示文摘Fiber reinforced polymer(FRP) composite materials are heterogeneous and anisotropic materials that do not exhibit plastic deformation. They have been used in a wide range of contemporary applications particularly in space and aviation,automotive,maritime and manufacturing of sports equipment. Carbon fiber reinforced polymer(CFRP) and glass fiber reinforced polymer(GFRP) composite materials,among other fiber reinforced materials,have been increasingly replacing conventional materials with their excellent strength and low specific weight properties. Their manufacturability in varying combinations with customized strength properties,also their high fatigue,toughness and high temperature wear and oxidation resistance capabilities render these materials an excellent choice in engineering applications.In the present review study,a literature survey was conducted on the machinability properties and related approaches for CFRP and GFRP composite materials. As in the machining of all anisotropic and heterogeneous materials,failure mechanisms were also reported in the machining of CFRP and GFRP materials with both conventional and modern manufacturing methods and the results of these studies were obtained by use of variance analysis(ANOVA),artificial neural networks(ANN) model,fuzzy inference system(FIS),harmony search(HS) algorithm,genetic algorithm(GA),Taguchi's optimization technique,multi-criteria optimization,analytical modeling,stress analysis,finite elements method(FEM),data analysis,and linear regression technique. Failure mechanisms and surface quality is discussed with the help of optical and scanning electron microscopy,and profilometry. ANOVA,GA,FEM,etc. are used to analyze and generate predictive models. | Meltem Altin Karatas Hasan Gokkaya | 2018 | Defence Technology(防务技术)2018，14，4： | 31 |
| 3 | Synthesis, properties, and applications of graphene oxide/reduced graphene oxide and their nanocomposites显示文摘Thanks to their remarkable mechanical, electrical, thermal, and barrier properties, graphene-based nanocomposites have been a hot area of research in the past decade. Because of their simple top-down synthesis, graphene oxide (GO) and reduced graphene oxide (rGO) have opened new possibilities for gas barrier, membrane separation, and stimuli-response characteristics in nanocomposites. Herein, we review the synthesis techniques most commonly used to produce these graphene derivatives, discuss how synthesis affects their key material properties, and highlight some examples of nanocomposites with unique and impressive properties. We specifically highlight their performances in separation applications, stimuli-responsive materials, anti-corrosion coatings, and energy storage. Finally, we discuss the outlook and remaining challenges in the field of practical industrial-scale production and use of graphene-derivative-based polymer nanocomposites. | Andrew T. Smith Anna Marie LaChance Songshan Zeng Bin Liu Luyi Sun | 2019 | Nano Materials Science2019，1，1： | 33 |
| 4 | DEVELOPMENT OF POLYMER MINERAL COMPOSITE AND ITS DAMPING PROPERTY显示文摘The principle of production of polymer mineral composite was analyzed. Property parameters and the procedure for producing PMC components were also given. Damping property and principle of vibration absorption of polymer mineral composite were also investigated. Reduced experiment was conducted for two jigs which are similar in structure only different in material that one made of PMC the other made of casting iron to test their dynamic characteristic. | J.Sun 1) ,J.F.Li 2) ,B.J.Lu 1) ,J.F.Zhong 3) and X.P. Huang 1) 1) Dept. of Agri. Eng., Laiyang Agriculture College, Laiyang 265200,China 2) Dep. of Mech. Eng., Shandong University of Technology, Jinan 250061,China 3) Agruculture S | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 23 |
| 5 | Molecular dynamics simulation of mechanical properties of TATB/fluorine-polymer PBXs along different surfaces显示文摘The mechanical properties of PBXs composed of the well-known insensitive explo-sive TATB (1,3,5-Triamino-2,4,6-trinitrobenzene) crystal and four kinds of typical fluo-rine-polymers, i.e. poly (vinylidene difluoride) (PVDF), polychlorotrifluoroethylene (PCTFE), fluo-rine rubber (F2311) and fluorine resin (F2314) individually, have been simulated by molecular dy-namics (MD) method. The results show that the mechanical properties of TATB can be effectively improved by blending with a small amount of fluorine-polymers. Different mechanical properties of PBXs are obtained by putting fluorine-polymer binders parallel to different crystalline surfaces. The whole effect of improving mechanical properties is found to be (010)?(100)>(001). | XIAO Jijun1, HUANG Yucheng1, HU Yingjie1,2 & XIAO Heming1 1. Department of Chemistry, Nanjing University of Science and Technology, Nanjing 210094, China 2. Department of Chemistry, Nanjing Xiaozhuang College, Nanjing 210017, China Correspondence should be addressed to Xiao Heming (email: xiao@mail.njust.edu.cn) | 2005 | Science China Chemistry2005，48，6： | 19 |
| 6 | Single whispering-gallery mode lasing in polymer bottle microresonators via spatial pump engineering显示文摘Single-mode lasing in whispering-gallery mode(WGM)microresonators is challenging to achieve.In bottle microresonators,the highly non-degenerated WGMs are spatially well-separated along the long-axis direction and provide mode-selection capability.In this work,by engineering the pump intensity to modify the spatial gain profiles of bottle microresonators,we demonstrate a simple and general approach to realizing single-mode WGM lasing in polymer bottle microresonators.The pump intensity is engineered into an interference distribution on the bottle microresonator surface.By tuning the spacing between axial positions of the interference pump patterns,the mode intensity profiles of single-bottle WGMs can be spatially overlapped with the interference stripes,intrinsically enabling single-mode lasing and selection.Attractive advantages of the system,including high sidemode suppression factors 420 dB,large spectral tunability 48 nm,low-lasing threshold and reversible control,are presented.Our demonstrated approach may have a variety of promising applications,ranging from tunable single-mode lasing and sensing to nonlinear optics. | Fuxing Gu Fuming Xie Xing Lin Shuangyi Linghu Wei Fang Heping Zeng Limin Tong Songlin Zhuang | 2017 | Light(Science & Applications)2017，6，1： | 17 |
| 7 | Recent advances in gel polymer electrolyte for high-performance lithium batteries显示文摘Lithium batteries (LBs) have become increasingly important energy storage systems in our daily life. However, their practical applications are still severely plagued by the safety issues from liquid electrolyte, especially when the batteries are exposed to mechanical, thermal, or electrical abuse conditions. Gel polymer electrolytes (GPEs) are being considered as an effective solution to replace currently available organic liquid electrolyte for building safer LBs. This review provides recent advancements in GPEs applied for high-performance LBs. On the one hand, from the environmental and economic point of view, the skeletons of GPEs changed from traditional polymer to renewable and degradable polymer. On the other hand, in addition to being as a component with good electrochemical and physical characterizations, the GPEs also need to provide some functions for addressing the concerns of lithium (Li) dendrites, unstable cathode electrolyte interface, dissolution and migration of transition metal ions,'shuttle effect' of polysulfides, and so on. Finally, to synchronously meet the challenges from the advanced cathode and Li metal anode, the bio-based GPEs with multi-functionality are proposed to develop high-energy/powerdensity batteries in the future. | Ming Zhu Jiaxin Wu Yue Wang Mingming Song Lei Long Sajid Hussain Siyal Xiaoping Yang Gang Sui | 2019 | Journal of Energy Chemistry2019，28，10： | 17 |
| 8 | New type of potassium deposit: Modal analysis and preparation of potassium carbonate显示文摘A kind of dolomitic mudstone newly found in North China has high amounts of K2O up to 10wB% in average, and potassium reserve is at superior scale. Mineral assemblage of the potassium ore indicates a specific and complicated geological environment under which the po-tassium deposit formed. Modal analysis of the potassium host rock shows that the principal min-erals in the ore include microcline, dolomite, and clay minerals such as illite, illite/smectite mixed layer, and kaolinite, attributable to a new type of insoluble potassium deposits in ore genesis. The experiments in this research demonstrated that with sodium carbonate as flux agent, the potas-sium ore could be decomposed with a proportion as high as 99.4% by calcinations at moderate temperature for no more than 1.5―2.0 h; more than 70% of K2O in the calcined materials were leached into the liquor, and by acidification reaction of the filter liquor, a large amount of impuri-ties such as Fe3+, Ti4+, Mn2+, Mg2+, and Ca2+ were removed with precipitation of alumino-silicious colloid residue, which makes it possible to prepare potassium carbonate of electronic grade from the filter liquor, whereas the alumino-silicious residue could be utilized to make mineral polymer, a new type of inorganic construction structural materials. The current research shows that in-dustrial exploitation and comprehensive utilization of this new type of insoluble potassium re-source are feasible both in economic benefits and environmental kindness with the fairly clean production process as sketched in this paper. | MA Hongwen1, FENG Wuwei1, MIAO Shiding1, WANG Yingbin1 & TIAN Shuxin2 1. National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China 2.Tianjin Bureau of Geological Survey, Tianjin 300191, China | 2005 | Science China Earth Sciences2005，48，11： | 16 |
| 9 | Conductive polymers for stretchable supercapacitors显示文摘Stretchable energy storage devices,maintaining the capability of steady operation under large mechanical strain,have become increasing more important with the development of stretchable electronic devices.Stretchable supercapacitors(SSCs),with high power density,modest energy density,and superior mechanical properties are regarded as one of the most promising power supplies to stretchable electronic devices.Conductive polymers,such as polyaniline(PANI),polypyrrole(PPy),polythiophene(PTh)and poly(3,4-ehtylenedioxythiophene)(PEDOT),are among the well-studied electroactive materials for the construction of SSCs because of their high specific theoretical capacity,excellent electrochemical activity,light weight,and high flexibility.Much effort has been devoted to developing stretchable,conductive polymer-based SSCs with different device structures,such as sandwich-type and fiber-shaped type SSCs.This review summarizes the material and structural design for con ductive polymer-based SSCs and discusses the challenge and importa nt di recti ons in this emergi ng field. | Yaqun Wang Yu Ding Xuelin Guo Guihua Yu | 2019 | Nano Research2019，12，9： | 16 |
| 10 | Molecular dynamics simulations on the structures and properties of ε-CL-20-based PBXs ——Primary theoretical studies on HEDM formulation design显示文摘Five polymer bonded explosives (PBXs) with the base explosive ε-CL-20 (hexanitrohexaazaisowurtzi- tane), the most important high energy density compound (HEDC), and five polymer binders (Estane 5703, GAP, HTPB, PEG, and F2314) were constructed. Molecular dynamics (MD) method was employed to investigate their binding energies (Ebind), compatibility, safety, mechanical properties, and energetic properties. The information and rules were reported for choosing better binders and guiding formula- tion design of high energy density material (HEDM). According to the calculated binding energies, the ordering of compatibility and stability of the five PBXs was predicted as ε-CL-20/PEG > ε-CL-20/ Estane5703 ≈ε-CL-20/GAP > ε-CL-20/HTPB > ε-CL-20/F2314. By pair correlation function g(r) analyses, hydrogen bonds and vdw are found to be the main interactions between the two components. The elasticity and isotropy of PBXs based ε-CL-20 can be obviously improved more than pure ε-CL-20 crystal. It is not by changing the molecular structures of ε-CL-20 for each binder to affect the sensitivity. The safety and energetic properties of these PBXs are mainly influenced by the thermal capability (C°p) and density (ρ) of binders, respectively. | XU XiaoJuan1,2, XIAO JiJun1, HUANG Hui3, LI JinShan3 & XIAO HeMing1 1 Department of Chemistry, Nanjing University of Science and Technology, Nanjing 210094, China 2 Department of Chemistry, Yancheng Teacher’s College, Yancheng 224002, China 3 Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China | 2007 | Science China Chemistry2007，50，6： | 15 |
| 11 | Super absorbent polymer seed coatings promote seed germinationand seedling growth of Caragana korshinskii in drought显示文摘Coating seeds with water absorbent materials can improve their survival, especially for those planted indrought or barren areas. In this study, effects of five kinds of super absorbent polymers (SAPs) on seed germinationand seedling growth of Caragana korshinskii under drought conditions were investigated. Our results showed that SAPcoatings could significantly improve the percentage and energy of seed germination, as well as reduce the relativeelectrical conductivity (REC), proline, malondialdehyde (MDA), H202 content, and peroxidase (POD) activity duringgermination. These results implied that seeds could uptake moisture from SAP coatings to alleviate drought-inducedoxidative stress and membrane damage, thus exhibiting a better vigor and germination performance. After coating C.korshinskii seeds with SAPs, more seedlings emerged and grew better. Under the combined influence of the waterabsorption capacity of SAP and other factors, the efficiencies of five SAP coatings are in the sequence D〉E〉B〉A〉C.The function of the SAP coating on promoting seedling survival was confirmed in Mu Us Sandy Land in Ordos, InnerMongolia Autonomous Region, China. The average seedling number of SAP D-coated seeds increased twofold on thatof naked seeds. Our results are expected to be helpful in understanding and utilizing SAP seed coatings in improvingplant survival under drought conditions. | Li-qiang SU Jia-guo LI Hua XUE Xiao-feng WANG | 2017 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2017，18，8： | 15 |
| 12 | Solvent additive-free ternary polymer solar cells with 16.27% efficiency显示文摘Ternary strategy has been commonly demonstrated as an efficient method to improve the performance of polymer solar cells(PSCs), which has great potential in application of PSCs due to the simple device fabrication. | Qiaoshi An Xiaoling Ma Jinhua Gao Fujun Zhang | 2019 | Science Bulletin2019，64，8： | 14 |
| 13 | Autosub6000:A Deep Diving Long Range AUV显示文摘With an ultimate range up to 1000 km,a maximum operating depth of 6000 m,and a generous payload capacity,Autosub6000is well placed to become one of the world’s most capable deep diving Autonomous Underwater Vehicles(AUVs).Recently,Autosub6000 successfully completed its first deep water engineering trials,and in September 2008,fitted with amultibeam sonar,will carry out its first science missions.This paper will describe how we are tackling the design issues thatspecifically affect a deep diving AUV which must be capable of operating with true autonomy,independently of the mother ship,namely:carrying adequate energy for long endurance and range,coping with varying buoyancy,and maintaining accuratenavigation throughout missions lasting up to several days.Results from the recent engineering trails are presented,and futuremissions and development plans are discussed. | Stephen McPhail | 2009 | Journal of Bionic Engineering2009，6，1： | 13 |
| 14 | POLYMER CHARGE AND MOLECULAR WEIGHT EFFECTS ON TREATED IRRIGATION FURROW PROCESSES显示文摘Application of 5-10 mg L-1 water soluble anionic polyacrylamide (PAM) to furrow irrigation water during flow advance substantially reduces sediment loss and increases net infiltration. We hypothesized that PAM_s solvated molecular conformation influences its irrigation-management efficacy. The study was conducted in Kimberly, Idaho, on Portneuf silt loam (Durinodic Xeric Haplocalcids), under furrowirrigated beans (Phaseolus vulgaris ) at a 1.5% slope. Polyacrylamides with contrasting molecular weight (anionic; 4-7, 12- 15 and 14-17 MDa, i.e. Mg mol-1 ), charge type (neutral, anionic, cationic), and charge density (8, 19, 35 mol %) were tested in two studies. Inflow rate was 23 L min-1 during furrow advance, and 15 L min-1 for the remaining set. Anionic and neutral PAMs were twice as effective as cationic PAMs for controlling sediment loss in new furrows. The order of effectiveness for overall soilloss control was : anionic >neutral >cationic PAM, and efficacy increased with increasing charge density and/or molecular weight. Net furrow infiltration increased by 14 to 19% when PAM treatment molecular weight was reduced from 17 to 4 MDa. General trends suggested that medium and high charge density anionic and neutral PAM produced the greatest increase in infiltration compared with controls.Compared with untreated furrows, neutral PAM gave the greatest season-long net infiltration gains (5%),while charged PAMs tended to increase net infiltration early in the season on new furrows but decreased infiltration on repeat-irrigated furrows later in the season. | R. D. Lentz(USDA-ARS, Northwest Irrigation and Soils Research Laboratory, Kimberly, ID)R. E. Sojka (Landcare Research, New Zealand, Ltd, Palmerston North, New ZealandNote: The manucript of this paper was received in March 1999, Discussion open until March | 2000 | International Journal of Sediment Research2000，15，1： | 13 |
| 15 | FRP-混凝土-钢双壁空心管的截面弯矩-曲率全曲线显示文摘为研究纤维增强复合材料(FRP)-混凝土-钢双壁空心管的抗弯性能,完成了3根试件的抗弯试验。采用条带法计算了3个试件和12个双壁空心管计算模型的截面弯矩-曲率曲线;推导了双壁空心管受弯承载力理论计算式。结果表明:该种双壁空心管受弯时,受拉区的FRP管环向受压、受压区的FRP管环向受拉,跨中挠度达到跨度的1/24时承载力尚未下降。在试验、数值计算和理论计算结果的基础上,提出了该种双壁空心管受弯承载力简化计算式,建立了以弯曲刚度表示的该种双壁空心管截面弯矩-曲率关系三折线模型。 | 刘明学 钱稼茹 | 2007 | 清华大学学报(自然科学版)2007，47，12： | 12 |
| 16 | Progresses in Manufacturing Techniques of Lithium-Ion Battery Separators in China显示文摘What is the most favorite and original chemistry developed in your research group?We focus on high-performance and multi-functionality of polymer blends and nanocomposites obtained via processing.The physics and chemistry during polymer processing is our most favorite research topic,which is more complicated and challenging compared with that in state polymer physics and chemistry because it is a dynamic and non-equilibrium process. | Tong Wu Ke Wang Ming Xiang Qiang Fu | 2019 | Chinese Journal of Chemistry2019，37，12： | 11 |
| 17 | A high strength, anti-fouling, self-healable, and thermoplastic supramolecular polymer hydrogel with low fibrotic response显示文摘The fibrotic response plays an important role in the performance and longevity of implantable devices. Thus, development of effective anti-inflammatory and anti-fibrosis biomaterial implants has become an urgent task. In this work, we developed a novel supramolecular polymer hydrogel through the copolymerization of N-acryloyl glycinamide(NAGA) and carboxybetaine acrylamide(CBAA) in the absence of any chemical crosslinker, which the mechanical properties being tunable through changing the monomer concentration and the monomer ratio over a broad scope. The hydrogel possessed the superior mechanical performances: high tensile strength(~1.13 MPa), large stretchability(~1200%), and excellent compressive strength(~9 MPa) at high monomer concentration and NAGA/CBAA ratio. Introduction of CBAA could promote the self-healability, thermoplasticity of suparmolecular polymer hydrogels at lower temperatures, meanwhile dramatically improving anti-fouling property.Histological analysis and in vitro cytotoxicity assays testified the excellent biocompatibility of the hydrogel. This high strength supramolecular polymer hydrogel with integrated multiple functions holds promising potentials as a scaffold biomaterial for treating degenerated soft supporting tissues. | WANG HongBo LI HaoFei WU YuanHao YANG JianHai LIU WenGuang | 2019 | Science China(Technological Sciences)2019，62，4： | 11 |
| 18 | Stimulus-responsive polymeric nanoparticles for biomedical applications显示文摘Polymeric nanoparticles with unique properties are regarded as the most promising materials for biomedical applications including drug delivery and in vitro/in vivo imaging.Among them,stimulus-responsive polymeric nanoparticles,usually termed as 'intelligent' nanoparticles,could undergo structure,shape,and property changes after being exposed to external signals including pH,temperature,magnetic field,and light,which could be used to modulate the macroscopical behavior of the nanoparticles.This paper reviews the recent progress in stimulus-responsive nanoparticles used for drug delivery and in vitro/in vivo imaging,with an emphasis on double/multiple stimulus-responsive systems and their biomedical applications. | LI YongYong1,2,DONG HaiQing1,2,WANG Kang1,SHI DongLu 2,ZHANG XianZheng1 & ZHUO RenXi1 1Key Laboratory of Biomedical Polymers,Ministry of Education Department of Chemistry,Wuhan University,Wuhan 430072,China 2Institute for Advanced Materials and Nano Biomedicine(iNANO),Tongji University,Shanghai 200092,China | 2010 | Science China Chemistry2010，53，3： | 11 |
| 19 | Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorods | Amir Mostafaei Ashkan Zolriasatein | 2012 | Progress in Natural Science:Materials International2012，22，4： | 10 |
| 20 | Synthesis and Properties of High Performance Functional Polyimides Containing Rigid Nonplanar Conjugated Fluorene Moieties显示文摘A diamine(WuFDA) containing vertical rigid non-planar conjugated fluorene moiety and low polarizability group(C―F)was designed and synthesized through three steps of reactions(halogenated reaction, Suzuki coupling reaction, and reduction reaction).Four kinds of high performance functional polyimides(WuFPI-6 F, WuFPI-BP, WuFPI-BT, and WuFPI-PM) were thus prepared by the condensation polymerization of WuFDA with four commercial dianhydride 6 FDA, BPDA, BTDA, and PMDA, respectively. The polyimides exhibited low dielectric constant, excellent thermal stability, outstanding solubility, good film-forming property, and mechanical properties. The dielectric constants of the polyimides were in the range of 2.28-2.88(f = 10~4 Hz). The 5% weight-loss temperatures(Td 5%)in nitrogen were in the range of 555-584 °C, and the glass transition temperatures(T_g) were in the range of 408-448 °C. The weight loss of WuFPI-BP maintaining at 450 and 500 °C for half an hour was only 0.33% and 1.26%, respectively. All the WuFPIs could be dissolved in almost all organic solvents, even chloroform. The tensile strength and tensile modulus of these films were in the ranges of 78.6-85.7 MPa and 3.1-3.2 GPa, respectively. In addition, the polyimides displayed light color with special fluorescent and resistive switching(ON-OFF) characteristics; the maximum fluorescence emission was observed at 422-424 nm in NMP solution and at 470-548 nm in film state. The memory devices with the configuration of indium tin oxide/WuFPIs/aluminum(ITO/WuFPIs/Al) exhibited distinct volatile memory characteristics of static random access memory(SRAM), with an ON/OFF current ratio of 10~5-10~6. These functional polyimides showed attractive potential applications in the field of high performance flexible polymer photoelectronic devices or polymer memory devices. | Yi-Wu Liu Li-Shuang Tang Lun-Jun Qu Si-Wei Liu Zhen-Guo Chi Yi Zhang Jia-Rui Xu | 2019 | Chinese Journal of Polymer Science2019，37，4： | 10 |
您所在的机构暂未开通此部分的功能，请联系管理员