ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Thermooxidative degradation of an unsaturated polyester resin (1997)
    Springer
    Journal of thermal analysis and calorimetry 49 (1997), S. 183-191 
    Details
    ISSN: 1572-8943
    Keywords: kinetics ; thermooxidative degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The results of non-isothermal kinetic analysis of the thermooxidative degradation in air and oxygen of an unsaturated polyester resin are presented. It has been shown that the thermooxidative degradation in oxygen occurs at lower temperatures than the thermooxidative degradation in air. The kinetic parameters of the thermooxidative degradation depend on the heating rate and the oxygen pressure. Two straight lines of InAvs. E (A is the preexponential factor andE is the activation energy), characteristic for the compensation effect, have been obtained for the thermooxidative degradation in air and in oxygen respectively. The difference between the intercepts of these straight lines can be explained by dependence of the pre-exponential factor on the oxygen pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01987438
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Changes in the Mechanical Properties and Thermal Behaviour of LDPE in Response to Accelerated Thermal Aging (1998)
    Springer
    Journal of thermal analysis and calorimetry 53 (1998), S. 801-808 
    Details
    ISSN: 1572-8943
    Keywords: accelerated thermal aging ; LDPE ; mechanical properties ; thermooxidative degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The accelerated thermal degradation of low-density polyethylene (LDPE) was studied in air at atmospheric pressure and temperatures of 70, 80, 90 and 100°C. The changes in elongation at break, traction resistance and density as a result of accelerated thermooxidative degradation were followed. Thermal analysis curves (TG, DTG and DTA) of non-aged and thermally aged LDPE were recorded, and the thermal analysis results were compared with those relating to the variations in the elongation at break, the traction resistance and the density as a consequence of accelerated thermal aging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010186610454
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Estimation of Activation Energies for Thermooxidative Degradations of LDPE and NBR from Non-Isothermal and Isothermal DTA Data (1998)
    Springer
    Journal of thermal analysis and calorimetry 54 (1998), S. 765-773 
    Details
    ISSN: 1572-8943
    Keywords: activation energy ; isothermal kinetics ; non-isothermal kinetics ; thermooxidative degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Results obtained on the thermooxidative degradations of LDPE (low-density polyethylene) and NBR (nitrile-butadiene rubber) are presented. The activation energies for the thermooxidations leading to solid products were estimated. For LDPE, the activation energies obtained from non-isothermal data are in satisfactory agreement with those obtained from isothermal data. For NBR, the isothermal activation energy is ≉16% higher than the non-isothermal one. This difference is due to the morphological changes undergone by NBR during its heating at the rather high temperatures at which isothermal measurements were performed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010135702511
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...