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文献名《Native and Non-native Teachers’ Perceptions of Error Gravity: The Effects of Cultural and Educational Factors》
出处：《The Asia-Pacific Education Researcher》
April 2017, Volume 26, Issue 1, pp 51–59
作者：Zhenhui ...
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ExportJavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page., May 2018, Pages 373-380Author links open overlay panelShow moreHighlightsoMechanical property of polyimides can be adjusted by changing in monomer configuration.oThermoplastic polyimide with 4.4′-ODA has a better wear and friction behavior under dry condition.oRelationships between wear rate and mechanical properties were analyzed by Spearman's rank correlation coefficient.AbstractA series of asymmetric polyimide (PI) films were prepared via polycondensation of 2,3,3′,4′-biphenyl-tetracarboxylic acid dianhydride (a-BPDA) with a pair of isomer 4,4′-oxydianiline (4,4′-ODA) and 3,4′-oxydianiline (3,4′-ODA). The effects of isomerism on the thermal stability, mechanical and tribological properties were systematically investigated. When molar fraction of 4,4′-ODA was increased in PI macromolecular chain, it had little significant effect on the nano-indentation hardness number and thermal stability. Furthermore, more of 4,4′-ODA monomer in PI increased the elongation at break but reduced the tensile strength, as well as it resulted in a lower coefficient of frictions(COFs). This evolution was related to macromolecular chain conformation caused by different monomer configurations. PI with a linear monomer (4,4′-ODA) resulted in a lower COFs and better wear-resistance.Graphical abstractKeywordsPolyimideIsomerismMechanical propertyFriction and wearChoose an option to locate/access this article:Check if you have access through your login credentials or your institution.ororRecommended articlesCiting articles (0)想下载springerlink上的一篇外文文献，求帮忙_百度知道
想下载springerlink上的一篇外文文献，求帮忙
题目：Criminal reconciliation in China: consequentialism in history, legislation, and practice十分感谢！
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请下载附件，望采纳答案文题：Criminal reconciliation in China: consequentialism in history, legislation, and practice作者：Wei Pei期刊：China-EU Law J
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Effect of single-walled carbon nanotubes and carbon nanofibers on the structure and mechanical properties of thermoplastic polyimide matrix filmsV. E. SmirnovaI. V. GofmanE. M. Ivan’kovaA. L. DidenkoA. V. KrestininG. I. ZverevaV. M. SvetlichnyiV. E. YudinComposites
The effects of additives of single-walled carbon nanotubes prepared via electric-arc synthesis and carbon nanofibers produced via gas-phase synthesis on the crystallization capacities and mechanical and electric properties of composite films of a thermoplastic polyimide (PI) matrix based on 1,3-bis-(3,3′, 4,4′-dicarboxyphenoxy)benzene and 4,4′-bis-(4-aminophenoxy)biphenyl after their uniaxial drawing and additional annealing are studied. The use of these fillers induces the heterogeneous nucleation of a crystalline phase of PI on the nanoparticle surface. A higher specific interface area in the case of addition of carbon nanotubes relative to that of carbon nanofibers leads to the formation of the crystalline structure of PI with a small crystallite size and high imperfection. Uniaxial drawing leads to the formation of a supermolecular structure that is optimum for crystallization during additional annealing and removes the kinetic hindrances to crystal growth. The properties of these fillers have a significant effect on the orientation of the nanoparticles and the matrix macromolecules during the uniaxial drawing of the films, which is accompanied by an increase in the elastic modulus with an increase in the draw ratio and the ability of the composite films to undergo orientational crystallization during additional annealing.Composite Film Polymer Science Series Draw Ratio Carbon Nanofibers Carbon Nanoparticles
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to check access.Unable to display preview.&1.F. W. J. Van Hattum, J. M. Benito-Romero, A. Madronero, and C. A. Bernado, Carbon 35, ).2.J. Sandler, M. S. P. Shaffer, T. Prasse, W. Bauhofer, K. Schulte, and A. H. Windle, Polymer 40, ).3.M. D. Frogley, D. Ravich, and H. D. Wagner, Compos. Sci. Technol. 63, ).4.V. E. Yudin, V. M. Svetlichnyi, G. N. Gubanova, A. L. Didenco, T. E. Suchanova, and V. V. Kudryavtsev, J. Appl. Polym. Sci. 83, ).5.V. E. Yudin, V. M. Svetlichnyi, G. N. Gubanova, A. L. Didenco, E. N. Popova, and T. E. Suchanova, Polyimides Other High Temp. Polym. 3, 229 (2005).6.J. T. Muellerleile, B. G. Risch, D. E. Rodrigues, G. L. Wilkes, and J. M. Jones, Polymer 34, 789 (1993).7.V. Ratta, A. Ayambem, R. Young, J. E. McGrath, and J. L. Wilkes, Polymer 41, ).8.V. E. Yudin, V. M. Svetlichnyi, A. N. Shumakov, D. G. Letenco, A. Y. Feldman, and G. Marom, Macromol. Rapid Commun. 26, 885 (2005).9.V. E. Yudin, V. M. Svetlichnyi, A. N. Shumakov, A. Y. Feldman, and G. Marom, Compos. Sci. Technol. 67, 789 (2007).10.V. E. Smirnova, I. V. Gofman, G. N. Gubanova, A.I. Grigor’ev, A. L. Didenko, V. E. Yudin, V. M. Svetlichnyi, and T. E. Sukhanova, Zh. Polim. Khim. 79, ).11.V. E. Smirnova, I. V. Gofman, I. P. Dobrovol’skaya, V. E. Yudin, V. M. Svetlichnyi, A. N. Shumakov, and A. L. Didenko, Deform. Razrush. Mater., No. 4, 11 (2008).12.A. V. Krestinin, Ross. Nanotekhnol. 2(5–6), 18 (2007).13.
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Polyimides: A Class of Thermally Stable Polymers, Ed. by M. I. Bessonov (Nauka, Leningrad, 1983) [in Russian].18.A. R. Bhattacharyya, T. V. Sreecumar, Tao Liu, Satish Kumar, L. M. Ericson, and R. H. Hause, Polymer 44, ).19.E. J. Garboczi, K. A. Snyder, J. F. Douglas, and M. F. Thorpe, Phys. Rev. E: Stat. Phys., Plasmas, Fluids, Relat. Interdiscip. Top. 52, 819 (1995).V. E. Smirnova1I. V. Gofman1E. M. Ivan’kova1A. L. Didenko1A. V. Krestinin2G. I. Zvereva2V. M. Svetlichnyi1V. E. Yudin11.Institute of Macromolecular CompoundsRussian Academy of SciencesSt. PetersburgRussia2.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovka, Moscow oblastRussia查阅其他相关文献
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