Title: Testing the applicability of LDPE/HNT composites for cable core insulation
Authors: Polanský, Radek
Kadlec, Petr
Slepička, Petr
Kolská, Zdeňka
Švorčík, Václav
Citation: POLANSKÝ, R., KADLEC, P., SLEPIČKA, P., KOLSKÁ, Z., ŠVORČÍK, V. Testing the applicability of LDPE/HNT composites for cable core insulation. Polymer testing, 2019, roč. 78, č. SEP 2019, s. 1-9. ISSN 0142-9418.
Issue Date: 2019
Publisher: Elsevier
Document type: článek
URI: 2-s2.0-85070730053
ISSN: 0142-9418
Keywords in different language: polymer-matrix composites (PMCs);halloysite nanotubes (HNTs);nanocomposites;electrical properties;thermal properties;broadband dielectric spectroscopy (BDS)
Abstract in different language: Composites prepared from low-density polyethylene (LDPE) and tubular halloysite nanotubes (HNTs) with different contents of HNTs were comprehensively tested. HNTs were utilized to suppress the intensity of heat release from the ignition of LDPE. The results revealed that the large polarity discrepancies and high levels of chemical inertness of LDPE and HNTs led to a reduced level of HNT dispersion in the polymer matrix. Nevertheless, even for small quantities of HNTs, differential scanning calorimetry (DSC) confirmed the decrease in the intensity of heat release during the LDPE/HNT thermal decomposition. Mechanical tests demonstrated that the presence of HNTs did not significantly influence the yield strength but did contribute to toughening of the LDPE matrix. Measurement of the dielectric properties revealed that the presence of HNTs also contributes to an increase in the number of permanent dipoles and charge carriers. However, the non-polar nature of the LDPE matrix can effectively suppress this disadvantage.
Rights: Plný text je přístupný v rámci univerzity přihlášeným uživatelům.
© Elsevier
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