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Online since: March 2015
Authors: Hai Ping Zou, Yao Li, Ming Wei Chen
The unique characteristics in structure distribution make FGM component offer great promising characteristics such as low residual thermal stresses and improved bonding strength between dissimilar materials.
The belt structure is able to ensure send the material powders on it to the powder outlet channel completely.
Powder feeder experiments During the FGM metal component digital manufacturing process, the quantity and the stability of delivered metal powders have great influences on the mechanical properties, the operating mode performance and the standard physical chemistry performance of the fabricated components.
The belt structure is able to ensure send the material powders on it to the powder outlet channel completely.
Powder feeder experiments During the FGM metal component digital manufacturing process, the quantity and the stability of delivered metal powders have great influences on the mechanical properties, the operating mode performance and the standard physical chemistry performance of the fabricated components.
Online since: December 2013
Authors: K.S.N.D. Pavan, S. Nagarajan, K. Greeshma Priyanka, V. Madhurima
Nagarajan2, d
1Department of Physics, 2Department of Chemistry
Central University of Tamil Nadu, Thiruvarur- 610 004, India
amadhuphy@cutn.ac.in, bangemathew70@gmail.com, csai4pavan@gmail.com, dsnagarajan@cutn.ac.in
Keywords: Perylene diimide; wetting; thin film; contact angle.
For each specific material, the charge carrier mobility depends crucially on the overlap between p-orbitals of vicinal molecules which, in turn, is intimately related to the microscopic structure and density of structural defects of the organic films.
The substituent (R) structure and contact angle are given below: Derivative (R=) Contact Angle (°) Derivative (R=) Contact Angle (°) 13.8o 48.9o 32.8o 27.3o 80.5o 35.2o Fig. 1.
For each specific material, the charge carrier mobility depends crucially on the overlap between p-orbitals of vicinal molecules which, in turn, is intimately related to the microscopic structure and density of structural defects of the organic films.
The substituent (R) structure and contact angle are given below: Derivative (R=) Contact Angle (°) Derivative (R=) Contact Angle (°) 13.8o 48.9o 32.8o 27.3o 80.5o 35.2o Fig. 1.
Facile Synthesis of Cobalt Oxide Uniformly Coated on Multi-Wall Carbon Nanotubes for Supercapacitors
Online since: August 2011
Authors: Liang Yu Gong, Ling Hao Su
Facile synthesis of cobalt oxide uniformly coated on multi-wall carbon nanotubes for supercapacitors
Liangyu Gong1,a,* Linghao Su1,b
1College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
alydhny@163.com, bslh99@163.com *corresponding author
Keywords: Cobalt oxide; Multi-wall carbon nanotubes; Uniform coating; Supercapacitor
Abstract.
Among them, multi-wall carbon nanotubes [4, 5, 7] are often employed to fabricate composite electrode because of their good electrical conductivity and entangled structure.
Therefore, it is clear that MWCNTs with good electrical conductivity and entangled structure greatly enhance the Co3O4 electrode’s pseudocapacitive properties.
Among them, multi-wall carbon nanotubes [4, 5, 7] are often employed to fabricate composite electrode because of their good electrical conductivity and entangled structure.
Therefore, it is clear that MWCNTs with good electrical conductivity and entangled structure greatly enhance the Co3O4 electrode’s pseudocapacitive properties.
Online since: November 2012
Authors: Ai Qun Yuan, Zeng Wei Huang, An Ping Liao, Shao Mei Ma, Dong Ping Wei, Sheng Fu Wu
Simple Synthesis of Layered Zinc Phosphate and Its Evaluation of the Corrosive Effectiveness
Shao-mei Ma1, Dong-ping Wei1, Sheng-fu Wu2,
Zeng-wei Huang 1, Liao An-ping1, and Ai-qun Yuan1,*
1College of Chemistry and Chemical Engineering, Guangxi University for Nationalities; Key Laboratory of New Technology of Chemical and Biological Transformation Processes, Nanning, 530006, Guangxi, China
2College of Pre-education, Guangxi University for Nationalities, Nanning, 530006, Guangxi, China
Keywords: Zinc phosphate, Corrosive effectiveness, Anticorrosive pigment
Abstract.
The main reasons are that this product has layered structure to enhance its shielding protection effect, and micro-grade particle size is helpful to enlarge its active regions and improve its dispersibility.
Both in the epoxy and alkyd paints tests, the anticorrosive property of the title compound is superior to that of commercial zinc phosphate because this product has layered structure to enhance its shielding protection effect, which can efficiently enhance the anticorrosive property of coating and prevent the erosion of the corrosive medium by improving the barrier and hydrophobicity of the coating.
The main reasons are that this product has layered structure to enhance its shielding protection effect, and micro-grade particle size is helpful to enlarge its active regions and improve its dispersibility.
Both in the epoxy and alkyd paints tests, the anticorrosive property of the title compound is superior to that of commercial zinc phosphate because this product has layered structure to enhance its shielding protection effect, which can efficiently enhance the anticorrosive property of coating and prevent the erosion of the corrosive medium by improving the barrier and hydrophobicity of the coating.
Online since: September 2013
Authors: Zheng Zhou Wang, Charles A. Wilkie
Flammability and Thermal Degradation of Polystyrene/Cadmium Sulfate Nanocomposites
Zhengzhou Wang1, 2,a Charles A Wilkie2b
1 School of Materials Science and Engineering, Tongji University, Shanghai 200092, China
2 Department of Chemistry and Fire Retardant Research Facility, Marquette University, Milwaukee, WI 53201, USA
a zwang@tongji.edu.cn, bcharles.wilkie@marquette.edu
Keywords: Flammability, Thermal Degradation, Polystyrene, CdS, Nanocomposites.
The main diffraction peaks at 26.7, 41.1, and 52.1° in Fig.1(a) can be indexed as the (111), (220) and (311) planes of cubic phase structure of CdS NH, respectively, which is in agreement with the literature (JCPDS 10-454).
In CDS NR (Fig 1b), the peaks are identified to originate from (100), (002), (101), (102), (110), (103), (112) and (203) planes of hexagonal phase structure of CdS (JCPDS 41-1049).
The main diffraction peaks at 26.7, 41.1, and 52.1° in Fig.1(a) can be indexed as the (111), (220) and (311) planes of cubic phase structure of CdS NH, respectively, which is in agreement with the literature (JCPDS 10-454).
In CDS NR (Fig 1b), the peaks are identified to originate from (100), (002), (101), (102), (110), (103), (112) and (203) planes of hexagonal phase structure of CdS (JCPDS 41-1049).
Online since: January 2013
Authors: Feng Xiao, Liang Han, Yong Ming Liu
Fig.1 Shenzhen Xinwei EVT – 500V300A charging and discharging equipment
Fig.2 Components of testing system
System is connected with the battery pack through the lower computer, and the charging of the battery pack adopts series connection (Figure 3), because series charging is simple in structure, lower in cost, and easier to achieve.
Corresponding Author Name: Liang Han E-mail: melhan@seu.edu.cn Tel: +86 - 25 - 52090502 ext. 8436 References [1] Wang Haiming, Zheng Shengxuan, Liu Xingshun, Characteristics and Applications of Li-ion battery [J], ELECTRIC AGE, 2004,(03) [2] Lin Chengtao, Zhang Bin, Chen Quanshi, Xie Yongcai, Comparative research on characteristics and performance of typical tractive battery[J], CHINESE JOURNAL OF POWER SOURCES, 2008 [3] Huang Kun, Research of Lithium Ion Secondary Battery Technology[J], BATTERY BIMONTHLY, 2000,30(5):217 [4] Jin Minggang, Development of Solid State Li-ion Battery Industry in China [J], CHINESE BATTERY INDUSTRY, 2000,5(2)88 [5] Chen Zhaoyong, Zhang Jianli, Zhu Huali, Deng Yaping, Zhu Wei, Preparation of LiFePO4 and Its Structure Change and Performance Study in the Charge-discharge Cycles[J], CHINESE JOURNAL OF SYNTHETIC CHEMISTRY, 2009, 17(4) [6] Xu Jin, Charging and Discharging Characteristics of Li-ion Battery [J], SCIENCE AND TECHNOLOGY OF WEST CHINA, 2011,
Corresponding Author Name: Liang Han E-mail: melhan@seu.edu.cn Tel: +86 - 25 - 52090502 ext. 8436 References [1] Wang Haiming, Zheng Shengxuan, Liu Xingshun, Characteristics and Applications of Li-ion battery [J], ELECTRIC AGE, 2004,(03) [2] Lin Chengtao, Zhang Bin, Chen Quanshi, Xie Yongcai, Comparative research on characteristics and performance of typical tractive battery[J], CHINESE JOURNAL OF POWER SOURCES, 2008 [3] Huang Kun, Research of Lithium Ion Secondary Battery Technology[J], BATTERY BIMONTHLY, 2000,30(5):217 [4] Jin Minggang, Development of Solid State Li-ion Battery Industry in China [J], CHINESE BATTERY INDUSTRY, 2000,5(2)88 [5] Chen Zhaoyong, Zhang Jianli, Zhu Huali, Deng Yaping, Zhu Wei, Preparation of LiFePO4 and Its Structure Change and Performance Study in the Charge-discharge Cycles[J], CHINESE JOURNAL OF SYNTHETIC CHEMISTRY, 2009, 17(4) [6] Xu Jin, Charging and Discharging Characteristics of Li-ion Battery [J], SCIENCE AND TECHNOLOGY OF WEST CHINA, 2011,
Online since: February 2013
Authors: Tao Huang, Bo Meng, Tian Ling Qin, Yang Yang Song, Peng Tian, Wen Le Du
Measurement the Content of N-butyl Pyridine Nitrate in Water by UV-Spectrum
Peng Tian1,a*, Tao Huang2,b*, Tianling Qin1,a, Bo Meng1,a, Yangyang Song1,a and Wenle Du1,a
1College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China
2College of Physics Science and Technology, Shenyang Normal University, Shenyang 110034, China
aemail: tianpenglnu@sina.com, bemail: whlie64@yahoo.com.cn
Keywords: N-butyl pyridine nitrate ionic liquid, UV–spectrum, content
Abstract: N-butyl Pyridine Nitrate ionic liquid is prepared by the double decomposition reaction of BPC and NaNO3.
They have been used for liquid–liquid extraction Rather, such liquids consist of a wide variety of large organic cations combined with inorganic or organic anions[5], which our objective is to isolate the influence of particular feaures of the chemical structure by carrying out simulation studies of model systems where, insofar as possible, only one structural feature is varied at a time.
There have been many “all-atom” simulations of RTILs, and while these provide much insight[6-8], it is difficult to relate specific features of the chemical structure of the ions to particular liquid properties, when everything is included at once[9-11].
They have been used for liquid–liquid extraction Rather, such liquids consist of a wide variety of large organic cations combined with inorganic or organic anions[5], which our objective is to isolate the influence of particular feaures of the chemical structure by carrying out simulation studies of model systems where, insofar as possible, only one structural feature is varied at a time.
There have been many “all-atom” simulations of RTILs, and while these provide much insight[6-8], it is difficult to relate specific features of the chemical structure of the ions to particular liquid properties, when everything is included at once[9-11].
Online since: January 2014
Authors: Jing Jing Liu, Hong Jing Jia, Shou Zhi Pu
Synthesis and Properties Study of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(3-methylbenzene)-3-thienyl]perfluorocyclopentene
Jingjing Liu, Hongjing Jia and Shouzhi Pu*
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University
Nanchang 330013, P.R.China
pushouzhi@tsinghua.org.cn
Keywords: Diarylethene, Photochromism, Pyrimidine, Fluorescence switching.
The structure of diarylethene 1o were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 1.99 (s, 3H, -CH3), 2.43 (s, 3H, -CH3), 3.74 (s, 3H, -OCH3), 4.03 (s, 3H, -OCH3), 6.66 (s, 1H, benzene-H), 6.90–6.92 (m, 1H, benzene-H), 6.76 (d, 2H, J = 8.0 Hz, benzene-H)7.27 (s, 1H, thiophene-H), 8.34 (s, 1H, pyrimidine-H).
The significant difference in absorption bands of the closed-ring isomer compared to its open-ring isomer is mainly due to the increase in π conjugation, which dramatically changes the electronic structure as a whole in such a way that new electronic transitions are observed in the visible region [14,15].
The structure of diarylethene 1o were confirmed by 1H NMR (400 MHz, CDCl3, TMS): δ 1.99 (s, 3H, -CH3), 2.43 (s, 3H, -CH3), 3.74 (s, 3H, -OCH3), 4.03 (s, 3H, -OCH3), 6.66 (s, 1H, benzene-H), 6.90–6.92 (m, 1H, benzene-H), 6.76 (d, 2H, J = 8.0 Hz, benzene-H)7.27 (s, 1H, thiophene-H), 8.34 (s, 1H, pyrimidine-H).
The significant difference in absorption bands of the closed-ring isomer compared to its open-ring isomer is mainly due to the increase in π conjugation, which dramatically changes the electronic structure as a whole in such a way that new electronic transitions are observed in the visible region [14,15].
Online since: October 2013
Authors: Qiao Juan Gong, Yu Liu, Yong Qiang He, Jian Ping Gao, Tao Wu, Hong Sun
Fabrication of Stable PVA/PVP Hydrogels
Hong SUN1,a, Tao WU2,b, Yong-qiang HE1,c, Qiao-juan GONG1,d,
Jian-ping GAO2, e and Yu LIU2, f
1Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China
2School of Science, Tianjin University, Tianjin 300072, China
ahongsun2013@163.com, bwiny5t@126.com, cheyongqiang@126.com,
dqiaojuangong@163.com, ejianpinggao2012@126.com, fliuyuls@163.com
Keywords: PVA/PVP hydrogel, Cross linkage, Gel content, Swelling degree, Compressive strength.
For the sake of improving the maintenance time of PVP in the gel and getting higher mechanics intensity [7,8], we imported the double net-work structure.
Initiator ammonium persulphate can initiate PVP to gels and produce bridge in gels, link the molecular chains of PVA and PVP into network structure.
For the sake of improving the maintenance time of PVP in the gel and getting higher mechanics intensity [7,8], we imported the double net-work structure.
Initiator ammonium persulphate can initiate PVP to gels and produce bridge in gels, link the molecular chains of PVA and PVP into network structure.
Online since: January 2020
Authors: Alexey Yu. Rodichev, Andrey V. Gorin, Elena N. Gryadynova
The use of thermomechanical treatment of preformed coatings (applied by gas-thermal spraying) makes it possible to increase the adhesion strength of the coatings with the base while preserving the original structure and properties of powder as much as possible. [9].
Kurbatov Technology, structure and properties of antifriction materials based on iron-copper system containing graphite.
Zimon, Adhesion of films and coatings, Мoscow: Chemistry, 1977
Kurbatov Technology, structure and properties of antifriction materials based on iron-copper system containing graphite.
Zimon, Adhesion of films and coatings, Мoscow: Chemistry, 1977