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Publikācija: Heat Shrinkable Behavior

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Publikācijas valoda English (en)
Nosaukums oriģinālvalodā Heat Shrinkable Behavior, Physico-Mechanical and Structure Properties of Electron Beam Cross-Linked Blends of High-Density Polyethylene with Acrylonitrile-Butadiene Rubber
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori I. Reinholds
Valdis Kaļķis
Remo Merijs-Meri
Jānis Zicāns
Agnese Ābele
Atslēgas vārdi HDPE/NBR composites; Electron beam; Mechanical properties; Thermal properties; Thermo-shrinkage stresses
Anotācija In this study, heat-shrinkable composites of electron beam irradiated high-density polyethylene (HDPE) composites with acrylonitrile-butadiene rubber (NBR) were investigated. HDPE/NBR blends at a ratio of components 100/0, 90/10, 80/20, 50/50 and 20/80 wt% were prepared using a two-roll mill. The compression molded films were irradiated high-energy (5 MeV) accelerated electrons up to irradiation absorbed doses of 100–300 kGy. The effect of electron beam induced cross-linking was evaluated by the changes of mechanical properties, gel content and by the differences of thermal properties, detected by differential scanning calorimetry. The thermo-shrinkage forces were determined as the kinetics of thermorelaxation and the residual shrinkage stresses of previously oriented (stretched up to 100% at above melting temperature of HDPE and followed by cooling to room temperature) specimens of irradiated HDPE/NBR blends under isometric heating–cooling mode. The compatibility between the both components was enhanced due to the formation of cross-linked sites at amorphous interphase. The results showed increase of mechanical stiffness of composites with increase of irradiation dose. The values of gel fraction compared to thermorelaxation stresses increased with the growth of irradiation dose level, as a result of formation cross-linked sites in amorphous PP/NBR interphase.
DOI: 10.1016/j.radphyschem.2015.12.002
Hipersaite: http://www.sciencedirect.com/science/article/pii/S0969806X15301304 
Atsauce Reinholds, I., Kaļķis, V., Merijs-Meri, R., Zicāns, J., Ābele, A. Heat Shrinkable Behavior, Physico-Mechanical and Structure Properties of Electron Beam Cross-Linked Blends of High-Density Polyethylene with Acrylonitrile-Butadiene Rubber. Radiation Physics and Chemistry, 2016, Vol.120, 56.-62.lpp. ISSN 0969-806X. Pieejams: doi:10.1016/j.radphyschem.2015.12.002
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