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Modifying the poly ether ester antistatic agent by carbon nanotubes, the antistatic effect on polypropylene fibers

Progress in Natural Science:Materials International 2004年第9期 61-66页

作者： LI Chensha 1,2.*, LI Zhi 2. ZHANG Baoyou 3. LU Weizhe 2. TANG Yaping 1, FANG Gang 2. HU Xiaoqing 4 and LIANG Ji 2.1. New Material Division, institute of Nuclear {2. Technology, Tsinghua University, Beijing 102.01, China 2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China 3. Center for Analysis and Measurement, Harbin institute of Technology, Harbin 150001, China 4. The State Key Laboratory of New Ceramics and Fine Processing of Tsinghua University, Beijing 100084, China) New Material Division，institute of Nuclear energy Technology，Tsinghua University，Beijing 102.01，China Department of Mechanical Engineering，Tsinghua University，Beijing 100084，China Department of Mechanical Engineering，Tsinghua University，Beijing 100084，China Center for Analysis and Measurement，Harbin institute of Technology，Harbin 150001，China New Material Division，institute of Nuclear energy Technology，Tsinghua University，Beijing 102.01，China The State Key Laboratory of New Ceramics and Fine Processing of Tsinghua University，Beijing100084，China

A new antistatic fiber is investigated using carbon nanotubes (CNTs) to enhance the antistatic ability of polymer fibers based on the mechanism of the discharging process of polarity macromolecule. Composite antistatic agent (CAA), prepared by dispersing CNTs in an organic antistatic agent carrier containing metallic ions in their main chains, is cospun with polypropylene (PP) to prepare CAA/PP fibers. It is indicated through analyzing the measured dynamic tribo electrostatic voltages that CNTs can promote the discharging process of polarity macromolecule of antistatic agent carrier and further improve the antistatic ability of PP fibers. It is also indicated that the antistatic effect promoted by CNTs is better than that by conductive carbon black. Moreover, the antistatic effects of the CNTs treated by different methods are also compared.

关键词： carbon nanotubes polypropylene fiber antistatic agent tribo-electrostatic voltages.

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X-ray spectra induced by ^(12.)Xe^(q+) impacting the metal surface

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Science China(Physics,Mechanics & Astronomy) 2008年第1期51卷 82-89页

作者： ZHANG XiaoAn 1,2.,XIAO GuoQing 1 ,YANG ZhiHu 1 ,CHEN XiMeng 3.,ZHAO YongTao 1 , LI FuLi 4 ,WANG Li 1,2.,CUI Ying 3.,ZHANG HongQiang 3.&ZHAN WenLong 1 1institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 73.000,China 2.epartment of Physics,Xianyang Normal University,Xianyang 712.00,China 3.epartment of Modern Physics,Lanzhou University,Lanzhou 73.000,China 4Department of Applied Physics,Xi’an Jiaotong University,Xi’an 710049,China 1. institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China 2. Department of Physics Xianyang Normal University Xianyang 712000 China 3. Department of Modern Physics Lanzhou University Lanzhou 730000 China 4. Department of Applied Physics Xi’an Jiaotong University Xi’an 710049 China

Using the slow highly charged ions 12. Xe q+ (q=2.,2.,2.;initial kinetic T0≤4.65 keV/a.u.)to impact Au surface,the Au atomic Mαcharacteristic X-ray spectrum is *** result shows that as long as the charge state of projectile is high enough,the heavy atomic characteristic X-ray can be effectively excited even though the incident beam is very weak(nA magnitude),and the X-ray yield per ion is in the order of 10-8and increases with the kinetic {2. and potential {2. of *** measuring the Au Mα-X-ray spectra,Au atomic N-level lifetime is estimated at about 1.3.×10-18s based on Heisenberg uncertainty relation.

关键词： slow highly charged ions characteristic X-ray level lifetime

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Measurement of Neutron Capture Cross Section for ^(180)Hf

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Chinese journal of nuclear physics 1997年第2期19卷 110-114页

作者： Chen Jinxiang Shi Zhaomin Tang Guoyou Zhang Guohui institute of Heavy Ion Physics,Peking University,Beijing 100871Lu Hanlin Han Xiaogang Huang Xiaolong China institute of {2. {3.,P.O.Box 2.5(3.,Beijing 102.13 北京大学重离子物理所北京中国原子能科学院北京

The neutron capture cross section for 180Hf relative to the 197Au（n,γ）198Au reaction ismeasured at neutron energies of 0.52.1.10 and 1.60 MeV using the activation *** of the products are measured with a high resolution HPGe detector gamma ray *** errors of the measured results are 5%～6%.Our results have a good agreementwith those of other authors within *** sections for the reaction are calculated withUNF code and recommended data are also given.

关键词： 100Hf 198Au Neutron capture cross section Activition method

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Stationary Classical Chaos of Trapped Two-Component Bose-Einstein Condensates in 1-D Optical Lattice Potentials

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Communications in Theoretical Physics 2007年第7期48卷 125-131页

作者： FANG Jian-Shu LIU Wing-Ki ZHU Shan-Hua1 institute of Physics,Hunan University of Technology,Zhuzhou 412.08,China2.Department of Physics,Hunan Normal University,Changsha 410081,China3.Department of Physics,University of Waterloo,Waterloo,Ontario,Canada N2. 3.1 institute of Physics Hunan University of Technology Zhuzhou 412008 China

We study the nonlinear dynamics of two-component Bose-Einstein condensates in one-dimensional pe-riodic optical lattice *** stationary state perturbation solutions of the coupled two-component nonlinearSchr?dinger/Gross-Pitaevskii equations are constructed by using the direct perturbation *** analysisrevels that the perturbation solution is the chaotic one,which indicates the existence of chaos and chaotic region inparameter *** corresponding numerical calculation results agree well with the analytical *** applying thechaotic perturbation solution,we demonstrate the atomic spatial population and the energy distribution of the systemare chaotic generally.

关键词： stationary state classical chaos two-component Bose-Einstein condensates optical lattice potential

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Calculation of triaxial superdeformation in ^(174)Hf

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Science China(Physics,Mechanics & Astronomy) 2007年第5期50卷 553-557页

作者： YU ShaoYing1,2.4, LI XiaoWei2. SHEN CaiWan1,5 & CHEN YongShou3.4 1 School of Science, Huzhou Teachers College, Huzhou 3.3.00, China 2.College of Mathematics, Physics and Information Engineering, Zhejiang Normal University, Jinhua 3.1000, China 3.China institute of atomic energy, Beijing {3. China 4 institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China 5 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 73.000, China 1. School of Science Huzhou Teachers College Huzhou 313000 China 2. College of Mathematics Physics and Information Engineering Zhejiang Normal University Jinhua 321000 China 4. institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China 5. Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000 China 3. China institute of {2. energy Beijing 102413 China

A two-dimensional Total Routhian Surface (TRS) calculation with the fixed hexa- decapole deformation ε4 = 0.03.was carried out for several configurations of 174Hf. Results indicate that the shell corrections have an important contribution to the formation of triaxial superdeformation in 174Hf and some possible configuration assignments are made to the 4 TSD bands experimentally found in 174Hf.

关键词： Total Routhian Surface (TRS), triaxial superdeformation, configuration

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Comparison of energy structure and spectral properties of Ce:LaAlO_3.and Ce:Lu_2.SiO_4)O

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Science China(Technological Sciences) 2009年第12期52卷 3678-3682页

作者： WANG XiaoDan 1 ,PAN Tao 1 ,ZANG TaoCheng 1 ,LI JianKang 1 ,ZHAO ZhiWei 2.,ZHANG LianHan 2.&XU Jun3.1Department of Applied Physics,University of Science and Technology of Suzhou,Suzhou 2.5009,China 2.hanghai institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 2.1800,China 3.hanghai institute of Ceramics,Chinese Academy of Sciences,Shanghai 2.1800,China 1. Department of Applied Physics University of Science and Technology of Suzhou Suzhou 215009 China 2. Shanghai institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China 3. Shanghai institute of Ceramics Chinese Academy of Sciences Shanghai 201800 China

Undoped LaAlO3.and 1 at.%Ce:LaAlO3.single crystals were grown by the Czochralski *** and fluorescence spectra were measured at room *** {2. levels structure of Ce:LaAlO3.was *** this paper,two viewpoints were *** first one is:the {2. levels structure of Ce:LaAlO3.is very similar to that of Ce:Lu2.SiO4)O which is a well-known *** the {2. levels structure of Ce:LaAlO3.and Ce:Lu2.SiO4)O,the lowest 5d {2. level of Ce 3. is located below the bottom of the conduction band of host crystal and the other higher 5d {2. levels of Ce 3. are located above the bottom of the conduction band of host *** second one is:Ce:LaAlO3.single crystal may not be suitable for scintillation application;by comparing the {2. levels structures of Ce:LaAlO3.and Ce:Lu2.SiO4)O,the large {2. difference(1.13.eV)between the two lowest 5d {2. levels of Ce 3. in LaAlO3.is a crucial factor that causes the luminescence quenching.

关键词： Ce:LaAlO3 Ce:Lu2.SiO4)O energy-level absorption luminescence

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Crystallization behavior of zeolite beta from acid-leached metakaolin

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Petroleum Science 2010年第4期7卷 541-546页

作者： Li Qiang Zhang Ying Cao Zhijun Gao Wei Cui Lishan Department of Materials Science and Technology China University of Petroleum Beijing 102249 China National Key Laboratory of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Microstructure Laboratory for energy Materials China University of Petroleum Beijing 102249 China

Well-crystallized zeolite beta was synthesized by using acid-leached metakaolin as the silica-alumina source and tetraethylammonium hydroxide structure-directing *** influence of the composition of the reaction mixture on product crystallinity was investigated,and the crystallization process was studied by examining solid samples obtained at different synthesis *** showed that the acid-leached metakaolin was fully converted into soluble aluminum and silicon species,which is crucial for the formation of well-crystallized zeolite *** the beginning of the crystallization process,these soluble aluminum and silicon species formed a aluminum-rich intermediate structure with layer *** the crystallization proceeding,more silicon species were incorporated into the zeolite beta framework and the layered structure was changed into spherical particles of zeolite beta with high SiO 2./Al 2.O 3.ratio and crystallinity.

关键词： Zeolite beta acid-leached metakaolin tetraethylammonium hydroxide (TEAOH) liquid phase transformation mechanism

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Influence of synthesis parameters on the crystallinity and Si/Al ratio of NaY zeolite synthesized from kaolin

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Petroleum Science 2010年第3期7卷 403-409页

Well-crystallized high-silica NaY zeolites （Si/Al〉2.5） were prepared from a reaction mixture consisting of metakaolin, sodium silicate solution and seed solution via optimization of the mixture composition and reaction conditions. The transformation from kaolin to high-silica NaY zeolite was confirmed by XRD, SEM and IR techniques. Subsequently, the influence of synthesis parameters, i.e. initial SIO2.Al2.3. initial Na2./SiO2. initial H2./SiO2. aging time of the seed solution, crystallization temperature and crystallization time, on the NaY growth was investigated in terms of crystallinity and Si/Al ratio. The results showed that the effects of initial SiO2.Al2.3. initial Na2./SiO2.and initial H2./ SiO2.on the crystaIlinity and Si/Al ratio of NaY zeolite are similar to those observed in the conventional syntheses of NaY zeolites only using sodium silicate solution as silicon source. However, due to the use of metakaolin as the main silicon and aluminum sources in the present study, a long crystallization induction period of 2. h was achieved, which can be attributed to the dissolution of metakaolin. In addition, different from the conventional syntheses of zeolite NaY, pure NaY zeolites （i.e. without NaP zeolite impurity） were still obtained even at 12.℃ because of the use of a large quantity of seed solution （2.0}wt%） in the reaction mixture. As the aging time of the seed solution increased from 3.5 h to 2. h, the relative crystallinity of the NaY zeolite first increased sharply and then reached a plateau, while the Si/Al ratio first increased rapidly up to a maximum value of 2.75 corresponding to an aging time of 6.5 h, and then decreased sharply with the aging time.

关键词： Kaolin NaY zeolite high-silica seed solution aging time crystallinity

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STUDIES ON ION BEAM APPLICATION TO IMPROVE AQUATIC MACROPHYTE REMEDIATION CAPACITY IN EUTROPHIC WATERS

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水生生物学报 2006年第6期30卷 711-717页

作者： LI Miao1, WU Yue-Jin 1, ZHANG Jun 1, YU Han-Qing 2. WU Xiao-Lei 3.and YU Zeng-Liang 1 (1. Key Laboratory of Ion Beam Bioengineering, institute of Plasma Physics, the Chinese Academy of Sciences, Hefei, China 2.0}03. 2. School of Chemistry and Material Science, the University of Science and Technology of China, Hefei, China 2.0}02. 3. Department of Environmental Science and Engineering, Tsinghua University, Beijing, China 100084 ) institute of Plasma Physics the Chinese Academy of Sciences Key Laboratory of Ion Beam Bioengineering CAS Hefei 230031 School of Chemistry and Material Science the University of Science and Technology of China Hefei 230026 Department of Environmental Science and Engineering Tsinghua University Beijing 100084

Using ion beam biotechnology in combination with soil-less plant cultivation on artificial substratum (floating beds), the experiments were conducted with Ipomoea aquatica Forsk. Plants were attached to floating-beds which were placed on the surface of artificially nutrient-enriched tank water, in order to study the purification and remediation efficiency of ion beam-treated I. aquatica cultivars. The results show that N + ion beams with 2.keV energy and dosages of 0, 2.6, 3.9, 5.2. 6.5, 7.8, 9.1×10 13. +(ions)/cm 2.affected I. aquatica dry seeds differently, with the dose of 3.9×10 13. + (ions)/cm 2.improving effectively the performance as expressed by various biological indices. After ion beam application, I. aquatica cultivars grew well in nutrient-enriched water bodies, increasing the growth of leaves and stem, number of leaves, length and area of roots, plant height, and weight more remarkably than observed in the control. The net removing rates of TN, TP were as high as 75% and 82., respectively. Especially under the dose of 3.9×10 13. +(ions)/cm 2. the net removing rates of TN, TP were highest, for 77% and 85%, respectively. It was proved that ion beam application improves phytoremediation and may be used to purify nutrient rich water bodies.

关键词： Ion beam treatment Aquatic macrophyte Ipomoea aquatica Forsk Nutrient-enriched waters Remediation capacity

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Tungsten-182.Mssbauer experiments at liquid nitrogen temperature

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Chinese Science Bulletin 2001年第9期46卷 732-734页

作者： HUANG Runsheng, LIU Bing, ZHANG Jinrong, LIU Cong & GAO Xuekui1. Physics Department of Nanjing University, Nanjing 2.0093. China 2. China institute of {2. energy, Beijing {3. China Physics Department of Nanjing University Nanjing China China institute of atomic {2. Beijing China

A good 182.a Mossbauer source and an apparatus designed specially were made. 182. transmission Mossbauer experiments were successfully carried out, both of the source and absorber at liquid nitrogen temperature. It wa... 详细信息

关键词： Mossbauer effect 182. Mossbauer effect.

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