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Preparation of Anhydrate Phosphogypsum Binders

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武汉理工大学学报 2010年第17期32卷 193-195,200页

作者： YANG M XIE Y CHENG J K PANG Y School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550003China

In this work,phosphogypsum(PG) with a small amount of lime was thermally pretreated at 450 ℃ to produce anhydrate gypsum for the purpose of searching new ways for utilization of waste PG. Additives,K2SO4 and one selected seed crystal(SC),were used as activator for anhydrate PG. The hydration characteristics of the anhydrate PG Binders were investigated by determination of the setting time,the ratio of hydrated anhydrate PG,the compressive strength development,and the microstructure of the hardenite. The resistance to water was studied by measuring mass loss of Binders exposed to hydrodynamic water. Results suggest that activated by K2SO4 and SC,anhydrate PG hydrates much more rapidly than that without additives. The anhydrate PG binder with K2SO4 and SC has proper setting time and good strength developments. SEM photos show that the set Binders have hydrated products of rodlike and regularly shaped crystals. Those crystals connected closely,and the hardenite has a compact structure,which is beneficial to the obtainment of good properties.

关键词： anhydrate PG Binders activator hydration

Beyond electrode materials structure design:Binders play a vital role for battery application of micro-size electroactive materials

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Nano Research Energy 2023年第3期2卷 1-4页

作者： Mingyue Wang Zhongchao Bai Nana Wang Institute for Superconducting and Electronic Materials(ISEM) Australian Institute for Innovative Materials(AIIM)Innovation CampusUniversity of WollongongSquires WayNorth WollongongNSW 2500Australia

Micrometre-sized electroactive particles with high tapping density show significant potential for commercial application since they effectively alleviate low Coulombic efficiency and excessive solid electrolyte interphase(SEI)issues brought by nanostructures.Furthermore,optimizing the electrode architecture using novel design concepts can improve the energy density.Beyond the electrode material structure design strategy,binder plays a vital role in providing the mechanical stability and regulating the charge transport.This highlight presents the latest development to design high-capacity batteries by optimizing the binder structures in electrodes and emphasizes the significance of binder design for further commercial application.

关键词： micro-size electroactive materials Binders mass transport high energy density

Tungsten carbide coatings with different Binders prepared by low power plasma spray system

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中国有色金属学会会刊：英文版 2004年第z1期14卷 77-82页

作者： GAO Yang M.F.Morks FU Ying-qing Materials and Technology Institute Dalian Maritime University Dalian 116026 China Materials and Technology Institute Dalian Maritime University Dalian 116026 China Central Metallurgical Research and Development Institute P.O. Box 87 Helwan El-Tibben Cairo Egypt Materials and Technology Institute Dalian Maritime University Dalian 116026 China

Thermal spraying of cermet coatings is widely used for protection of machining parts against wear and corrosion. These coatings consist of WC particles in metal Binders such as Co, Cr and Ni. Three kinds of WC powders with different metal Binders (Co, NiCr and CoCr) were sprayed by low power plasma spray system on Al-Si-Cu alloy substrate. Fundamental aspects of sprayed cermet coatings, including (i) the effects of binder type on the coating structure, (ii) the hardness and (iii) the microstructure, were investigated. All cermet coatings have the same phase structure such as WC and W2 C. However, the intensities of these phases are different in each coating, mainly due to the difference in solidification rate in each case. Moreover, the hardness measurements are found to be different in each coating. The results show that, binder type has a significant effect on the physical and mechanical properties of the sprayed coatings.

关键词： tungsten carbide Binders aluminum alloy substrate hardness microstructure

Influence of conductive additive on temperature susceptibility of asphalt Binders

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Journal of Central South University 2008年第S1期15卷 479-482页

作者：吴少鹏李波陈筝黄旭 Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education Wuhan University of Technology

The effects of graphite on temperature susceptibility of asphalt Binders were investigated by penetration test,Ring & Ball softening point test and viscosity test.And penetration index(IP),viscosity-temperature susceptibility(SVT),and penetration-viscosity numbers(NPV) were introduced to evaluate the effects.The results show that the penetration,softening point and viscosity of asphalt binder increase with the increase of content of graphite.This means that the addition of graphite makes asphalts stiffer.The results from IP,NPV and SVT show that temperature susceptibility is reduced by the addition of graphite.

关键词： asphalt Binders conductive additive penetration viscosity temperature susceptibility

Shear resistance properties of TPS modified bitumen Binders and asphalt mixtures

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Journal of Central South University 2008年第S1期15卷 434-437页

作者：曹庭维吴少鹏刘聪慧张涛 Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education Wuhan University of Technology

Shear resistance properties of the virgin bitumen and modified bitumen Binders with Tafpack Super(TPS) modifier and SBS modified bitumen were discussed.Dynamic shear rheometer(DSR) was used to measure the laboratory creep data for these Binders over a wide range of constant shear stresses at 20 ℃ to characterize the shear creep behaviors of all kinds of asphalt Binders,and the rutting test system was used to investigate the permanent deformation of porous asphalt mixtures using the above bitumen Binders for a fixed compressive stress.The shear strain rate and shear creep modulus were used to characterize the shear creep behavior of the TPS modified bitumen,and the rutting test results were used to show the consistency of porous asphalt mixtures with the bitumen Binders.Results indicate that a distinction of shear creep strain can be made among different contents of TPS modified bitumen at the same stress level,where the shear creep strain-time response curve of the SBS modified bitumen binder is between the curves of the 8% TPS and 12% TPS modified bitumen Binders.The shear strain rate and the shear creep modulus of the TPS modified bitumen Binders are obtained to compare with those of the SBS modified bitumen binder which results in the same trend as the shear creep strain-time response curve.Permanent deformation results of all the porous asphalt mixtures from the rutting test show reasonable agreement with the findings of the shear strain rates and shear creep modulus over the range of shear stress levels.

关键词： TPS modifier bitumen Binders asphalt mixtures shear resistance properties

Polyimides as Promising Materials for Lithium-Ion Batteries:A Review

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Nano-Micro Letters 2023年第9期15卷 74-102页

作者： Mengyun Zhang Li Wang Hong Xu Youzhi Song Xiangming He Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Lithium-ion batteries(LIBs)have helped revolutionize the modern world and are now advancing the alternative energy field.Several technical challenges are associated with LIBs,such as increasing their energy density,improving their safety,and prolonging their lifespan.Pressed by these issues,researchers are striving to find effective solutions and new materials for next-generation LIBs.Polymers play a more and more important role in satisfying the ever-increasing requirements for LIBs.Polyimides(PIs),a special functional polymer,possess unparalleled advantages,such as excellent mechanical strength,extremely high thermal stability,and excellent chemical inertness;they are a promising material for LIBs.Herein,we discuss the current applications of PIs in LIBs,including coatings,separators,Binders,solid-state polymer electrolytes,and active storage materials,to improve high-voltage performance,safety,cyclability,flexibility,and sustainability.Existing technical challenges are described,and strategies for solving current issues are proposed.Finally,potential directions for implementing PIs in LIBs are outlined.

关键词： Polyimides Separators Binders Solid-state electrolytes Lithium-ion

Analysis of a Cashew Shell and Fly Ash Rich Brake Liner Composite Material

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Fluid Dynamics & Materials Processing 2023年第3期19卷 569-577页

作者： R.Selvam L.Ganesh Babu Joji Thomas R.Prakash T.Karthikeyan T.Maridurai Department of Mechanical Engineering Saveetha Engineering CollegeChennaiTamilnaduIndia Department of Mechatronics Faculty of EngineeringTishk International UniversityErbilIraq Department of Mechanical Engineering Chouksey Engineering CollegeBilaspurChhattisgarh Department of Mechanical Engineering Saveetha School of EngineeringSIMATSChennaiIndia

Hybrid materials collected from organic and inorganic sources,which are traditionally used as brake lining materials,generally include fly ash,cashew shell powder,phenolic resins,aluminium wool,barites,lime powder,carbon powder and copper powder.The present research focuses on the specific effects produced by fly ash and aims to provide useful indications for the replacement of asbestos due to the health hazards caused by the related fibers.Furthermore,the financial implications related to the use of large-volume use of fly ash,lime stone and cashew shell powder,readily available in most countries in the world,are also discussed.It is shown that many manufacturing and automotive industries,which are currently experiencing difficulties in meeting the increasing demand for brake lining material,may take advantage from the proposed solution.

关键词： Friction coefficient wear composite brake lining Binders

Weak Intermolecular Interactions for Strengthening Organic Batteries

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Energy & Environmental Materials 2020年第4期3卷 441-452页

作者： Chengliang Wang School of Optical and Electronic Information Wuhan National Laboratory for Optoelectronics(WNLO)Huazhong University of Science and TechnologyWuhan 430074China

Organic batteries have attracted a lot of attention due to the advantages of flexibility,light weight,vast resources,low cost,recyclability,and ease to be functionalized through molecular design.The biggest difference between organic materials and inorganic materials is the relatively weak intermolecular interactions in organic materials but strong covalent or ionic bonds in inorganic materials,which is the inherent reason of their different physiochemical and electrochemical characteristics.Therefore,the relatively weak intermolecular interactions can indisputably affect the electrochemical performance of organic batteries significantly.Herein,the intermolecular interactions that are closely related to organic redox-active materials and unique in organic batteries are summarized into three parts:1)between neighbor active molecules,2)between active molecules and the conduction additives,and 3)between active molecules and the Binders.We hope this short review can give a distinct viewpoint for better understanding the internal reasons of high-performance batteries and stimulate the deep studies of relatively weak intermolecular interactions for strengthening the performance of organic batteries.

关键词： Binders conductive additives intermolecular interactions organic batteries redox-active materials

Part 1: Synthesis and Evaluation of Novel Nano Scale Powdered Polyurethane Acrylate Binders

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Advances in Chemical Engineering and Science 2012年第2期2卷 212-227页

作者： Mohamed M. El-Molla Karima Haggag Fatma N. El-Shall N. O. Shaker Faculty of Science (Girls) Al-Azhar University El-Nasser City Cairo Egypt Textile Research Division National Research Centre Cairo Egypt

Some new an aqueous polyurethane acrylate (waterborne binder) based on polyethylene glycol with different M. wt. mixed with polyol were carried out. Seven different polyurethane acrylate co-polymers were prepared aiming at substituting the two hydroxyl groups of polyethylene glycol (6000, 12,000 and 20,000 g/mol) and two primary hydroxyl groups of polyol through their reaction with corresponding calculated amounts of either isophorone diisoyanate or toluene diisocyanate and caped the remaining isocyanate group with either hydroxy ethyl acrylate or hydroxy propyl methacrylate to get on the polyurethane acrylate polymers [PUA]. From DSC measurement the result of Tg of synthesized PUA are in range from -8.78℃ to 36.4℃. So they can classify as soft Binders. The infrared spectra, rheological properties, viscosity measurement, the weight average molecular weight, of the synthesize Binders were investigated.

关键词： Synthesis Novel Powdered An Aqueous Polyurethane Acrylate Binders