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  • thermal conductivity  (18)
  • DSC
  • Seismology
  • Springer  (19)
  • Copernicus
  • Oxford University Press
  • 1990-1994  (19)
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Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 272 (1994), S. 633-654 
    ISSN: 1435-1536
    Keywords: Crystallization ; overall kinetics ; transcrystallinity ; polymer ; spherulite ; DSC ; PA 6-6
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An experimental and theoretical investigation of the overall crystallization kinetics of thin polymer films containing transcrystalline regions on their surfaces is presented. DSC experiments on polyamide 6-6 show that typical features of crystallization curves can be associated with the occurrence of transcrystallinity. In order to interpret these experimental results, a theoretical model is built within the frame of overall crystallization kinetics theories. It makes it possible to correlate the thickness of transcrystalline zone both to the crystallization temperature, the shape of the peak and the density of nuclei within the polymer. Computer simulation is also used to describe the different steps of structure development within a thin film containing transcrystalline regions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 14 (1993), S. 1119-1130 
    ISSN: 1572-9567
    Keywords: thermal conductivity ; toluene ; transient hot-wire ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new instrument is presented to measure the thermal conductivity of polar and electrically conducting liquids based on the transient coated hot-wire method. The performance of the apparatus has been assessed with toluene and water, which are recognized as standard reference materials for nonpolar and polar fluids, respectively. New results are reported fort the thermal conductivity of these liquids between 298 and 370 K and at pressures slightly above the saturation. The results show that the instrument is capable of an accuracy better than ±0.5%, while the precision and reproducibility are better than ±0.3%.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 14 (1993), S. 1119-1130 
    ISSN: 1572-9567
    Keywords: thermal conductivity ; toluene ; transient hot-wire ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new instrument is presented to measure the thermal conductivity of polar and electrically conducting liquids based on the transient coated hot-wire method. The performance of the apparatus has been assessed with toluene and water, which are recognized as standard reference materials for nonpolar and polar fluids, respectively. New results are reported fort the thermal conductivity of these liquids between 298 and 370 K and at pressures slightly above the saturation. The results show that the instrument is capable of an accuracy better than ±0.5%, while the precision and reproducibility are better than ±0.3%.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 12 (1991), S. 17-25 
    ISSN: 1572-9567
    Keywords: hard-sphere theory ; isopentane ; thermal conductivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper reports the results of new, absolute measurements of thermal conductivity of isopentane in the temperature range 307–335 K at pressures up to 0.4 GPa. The experimental data have an estimated uncertainty of ±0.3%. The density dependence of the thermal conductivity along the various isotherms has been represented with the aid of a single universal equation derived for a series of alkanes and based upon the hard-sphere model of dense fluids. An even more general prediction scheme for the thermal conductivity of liquids developed initially for normal alkanes is found to predict the present data within ±5%.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 11 (1990), S. 863-873 
    ISSN: 1572-9567
    Keywords: diffusion ; hard-sphere theory ; n-alkanes ; thermal conductivity ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Thermal conductivity, viscosity, and self-diffusion coefficient data for liquid n-alkanes are satisfactorily correlated simultaneously by a method based on the hard-sphere theory of transport properties. Universal curves are developed for the reduced transport properties λ *, η *, and D * as a function of the reduced volume. A consistent set of equations is derived for the characteristic volume and for the parameters R λ, R η, and R D, introduced to account for the nonsphericity and roughness of the molecules. The temperature range of the above scheme extends from 110 to 370 K, and the pressure range up to 650 MPa.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 13 (1992), S. 223-235 
    ISSN: 1572-9567
    Keywords: dilute gas ; thermal conductivity ; thermal diffusivity ; transient hot wire
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new treatment of the effect of the work of compression upon thermal conductivity measurements by the transient hot-wire technique is presented. The new analysis improves upon those given earlier and leads to quite a different result. The result makes it clear that the dilute gaseous state need not be excluded from the range of thermodynamic states in which accurate measurements are made owing to this effect, in contrast to the conclusions of earlier work.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 12 (1991), S. 837-854 
    ISSN: 1572-9567
    Keywords: diffusion ; helium ; thermal conductivity ; thermal diffusion ; transport properties ; virials ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Second virial coefficients and transport properties of helium are presented based on a state-of-the-art interatomic potential which was constructed with the use of a multiproperty fit. The experimental potential employed to produce these properties accurately reproduces a wide range of bulk and microscopic data and agrees well with ab initio calculations which were not available at the time of its construction. Virial coefficients of 3He and 4He are presented from 2 to 600 K, and transport properties of pure 3He and 4He gases and 3He-4He mixtures are presented from 5 to 6000 K.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 13 (1992), S. 895-905 
    ISSN: 1572-9567
    Keywords: benzene ; diffusion ; ethylbenzene ; hard-sphere theory ; mesitylene ; thermal conductivity ; toluene ; viscosity ; xylene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A previously described method, based on consideration of hard-sphere theory, is used for the simultaneous correlation of the coefficients of self-diffusion, viscosity, and thermal conductivity for benzene, toluene, o-, m-, and p-xylene, mesitylene, and ethylbenzene in excellent agreement with experiment, over extended temperature and pressure ranges. Values are given for the roughness factors R D , R η, and R λ, and the characteristic volume, V 0, is expressed as a function of both carbon number and temperature.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 12 (1991), S. 937-942 
    ISSN: 1572-9567
    Keywords: alkanones ; alkyl ethers ; thermal conductivity ; transient hot wire
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New absolute measurements, by the transient hot-wire technique, of the thermal conductivity of some alkyl ethers and alkanones are presented. The alkyl ethers studied are tert-butyl methyl ether, di-iso-propyl ether and di-butyl ether, while the alkanones studied are 2-butanone, 4-methyl pentan-2-one, and 2-octanone. The temperature range examined was 295–350 K, and the pressure atmospheric. The overall uncertainty in the reported thermal conductivity data is estimated to be better than ±1%, an estimate confirmed by the measurement of the thermal conductivity of water.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    International journal of thermophysics 13 (1992), S. 269-281 
    ISSN: 1572-9567
    Keywords: diffusion ; hard-sphere theory ; n-alkanes ; thermal conductivity ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Recent accurate measurements of the self-diffusion coefficient for n-hexadecane and n-octane and of the viscosity coefficient for n-heptane, n-nonane, and n-undecane over wide pressure ranges have been used to provide a critical test of a previously described method, based on consideration of hard-sphere theory, for the correlation of transport coefficient data. It is found that changes are required to the universal curve for the reduced viscosity coefficient as a function of reduced volume and, also, to the parameters R D, R η , and R λ which were introduced to account for effects of nonspherical molecular shape. The scheme now accounts most satisfactorily for the self-diffusion, viscosity, and thermal conductivity coefficient data for all n-alkanes from methane to hexadecane at densities greater than the critical density.
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