Local process-dependent structural and mechanical properties of extrusion blow molded high-density polyethylene hollow parts

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F20%3A63526102" target="_blank" >RIV/70883521:28110/20:63526102 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/20:63526102
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0142941819316885" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142941819316885</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymertesting.2019.106314" target="_blank" >10.1016/j.polymertesting.2019.106314</a>

Result language
angličtina
Original language name
Local process-dependent structural and mechanical properties of extrusion blow molded high-density polyethylene hollow parts
Original language description
Although applied for several decades, production of hollow plastic parts by extrusion blow molding (EBM) is still over-dimensioned. To overcome this issue, a thorough investigation of the process-structure-property relationship is required. In this study, the local process-structure-property relationship for high-density polyethylene EBM containers is analyzed with differential scanning calorimetry and dynamic mechanic analysis microindentation. Local process-dependent crystallinity and complex modulus data at various processing conditions are supplemented with wide-angle X-ray diffraction and transmission electron microscopy (TEM). The crystallinities and the complex moduli clearly show lower values close to the mold side than at the inner side and the middle of the cross-section, which reflects the temperature gradient during processing. Additionally, the orientation of the polymer chain (c-axis) reveals a low level of biaxiality with a slight tendency towards transverse direction. The biaxiality increases for low mold temperature and high draw ratio. Finally, biaxiality is confirmed with TEM, which reveals no preferred lamellar orientation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/LO1504" target="_blank" >LO1504: Centre of Polymer Systems Plus</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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