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排序方式: 共有69条查询结果,搜索用时 15 毫秒
1.
Jin Zhang Weiwei Lei Jurg Schutz Dan Liu Bin Tang Chun H. Wang Xungai Wang 《Journal of Polymer Science.Polymer Physics》2019,57(7):406-414
New multifunctional materials with both high structural and gas barrier performances are important for a range of applications. Herein we present a one‐step mechanochemical process to prepare molybdenum disulfide (MoS2) nanosheets with hydroxy functional groups that can simultaneously improve mechanical strength, thermal conductivity, and gas permittivity of a polymer composite. By homogeneously incorporating these functionalized MoS2 nanosheets at low loading of less than 1 vol %, a poly(vinyl alcohol) (PVA) polymer exhibits elongation at break of 154%, toughness of 82 MJ/m3, and in‐plane thermal conductivity of 2.31 W/m K. Furthermore, this composite exhibits significant gas barrier performance, reducing the permeability of helium by 95%. Under fire condition, the MoS2 nanosheets form thermally stable char, thus enhancing the material's resistance to fire. Hydrogen bonding has been identified as the main interaction mechanism between the nanofillers and the polymer matrix. The present results suggest that the PVA composite reinforced with 2D layered nanomaterial offers great potentials in packaging and fire retardant applications. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019 , 57, 406–414 相似文献
2.
Stefan Spange Frank Simon Heidrun Schutz Andrea Schramm Heinz Winkelmann 《高分子科学杂志,A辑:纯化学与应用化学》2013,50(11):997-1006
Abstract The preparation of cationically active oligo-p-methoxystyrene-silica composites by cationic interfacial polymerization is described. In addition to the effective preparation of the interfacial initiator, p-methoxybenzylium-hydrogen sulfate-silica, and p-methoxybenzylium-trifluoroacetate-silica, a procedure to yield new kinds of composites is reported. The outstanding properties of the “living” oligo-p-methoxy-styryl-hydrogen sulfate-silica is demonstrated by means of zeta potential measurements, solid-state 13C-NMR spectroscopy, UV/Vis spectroscopy, and electron scanning microscopy. 相似文献
3.
R. Ortega D. d'Enterria G. Martınez D. Baiborodin H. Delagrange J. Dıaz F. Fernández H. Löhner T. Matulewicz R. W. Ostendorf S. Schadmand Y. Schutz P. Tlusty R. Turrisi V. Wagner H. W. Wilschut N. Yahlali 《The European Physical Journal A - Hadrons and Nuclei》2006,28(2):161-171
Measured hard-photon multiplicities from second-chance nucleon-nucleon collisions are used in combination with a kinetic thermal
model to estimate the breakup times of excited nuclear systems produced in nucleus-nucleus reactions at intermediate energies.
The obtained nuclear breakup time for the 129Xe + natSn reaction at 50 A MeV is Δτ ≈ 100-300 fm/c for all reaction centralities. The lifetime of the radiating sources produced in seven other different heavy-ion reactions
studied by the TAPS experiment is consistent with Δτ ≈ 100 fm/c, such relatively long thermal photon emission times do not seemingly support the interpretation of nuclear breakup as due
to a fast spinodal process for the heavy nuclear systems studied. 相似文献
4.
J.P. Vivien Y. Schutz F.A. Beck E. Bozek T. Byrski C. Gehringer J.C. Merdinger 《Physics letters. [Part B]》1979,85(4):325-327
The multipolarity of the continuum transitions in 152Dy and 160Er has been deduced from γ-ray linear polarisation and angular distribution measurements. The yrast part for 160Er agrees with the predicted stretched E2 cascade. The statistical parts for both 152Dy and 160Er consist of a mixture of dipolar stretched and non-stretched transitions, predominantly of electrical character. Below 1.5 MeV, the data of 152Dy exhibit a different structure, and reveal a stretched M1 component in the low-energy region. 相似文献
5.
A perturbation wave solution of the Robinson-Trautman equations is proved to be a perturbation of the Schwarzschild black hole which describes an outgoing axial gravitational wave and corresponds to a special case of Chandrasekhar's algebraically special perturbation of the Schwarzschild metric. 相似文献
6.
F. A. Beck J. Dudek B. Haas J. C. Merdinger A. Nourreddine Y. Schutz J. P. Vivien Ph Hubert D. Dassié G. Bastin L. Nguyen J. P. Thibaud W. Nazarewicz 《Zeitschrift für Physik A Hadrons and Nuclei》1984,319(2):119-132
High spin states in the nucleus154Er have been reinvestigated using the123Sb(35Cl, 4n) reaction and a variety of spectroscopic techniques including excitation functions,γ-γ coincidences,γ angular distribution and linear polarization measurements. From the measured energies, relative intensities and transition multipolarities a new level scheme has been deduced up to an excitation energy of ~12 MeV and spin 36. An interpretation of the experimental results is given in terms of the deformed Woods-Saxon orbitals. Gigantic backbending (superdeformation) effect is studied theoretically within the cranking model. 相似文献
7.
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9.
Hoefman M Aphecetche L Bacelar JC Delagrange H Descouvemont P Diaz J d'Enterria D van Goethem M Holzmann R Huisman H Kalantar-Nayestanaki N Kugler A Lohner H Marques FM Martinez G Messchendorp JG Ostendorf RW Schadmand S Siemssen RH Simon RS Schutz Y Timmermans R Turrisi R Volkerts M Wagner V Weller H 《Physical review letters》2000,85(7):1404-1407