Temperatute Dependent Flow Instabilities of Highly Filled Polymer Compounds

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F01%3A63500229" target="_blank" >RIV/70883521:28110/01:63500229 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Temperatute Dependent Flow Instabilities of Highly Filled Polymer Compounds
Original language description
Highly filled polymer compounds are used for production of hard-metal parts by metal injection moulding (MIM technology). Compounds of hard-metal carbide powder (40 - 55 vol. %) and multicomponent polymeric binder based on PE, EBA and paraffin were prepared by melt mixing at 180 °C. The melt flow was investigated at a temperature range from 140 °C to 200 °C using capillary rheometer operating flow at constant piston speed. At higher temperatures the highly filled compounds (above 45 vol. %) exhibited anunstable flow characterized by pressure oscillations at the shear rates above 1000 s-1. The onset of unstable flow depended on the filler content and temperature. The activation energy of the shear flow was strongly dependent on the shear rate and the filler content. The Arrhenius relation was valid for the compounds in the stable flow region only. Two different dependencies of pressure oscillations amplitude on temperature were observed: decrease (for 55 vol. %) and increase (for 50 vo
Czech name
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Czech description
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Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
The Polymer Processing Society - 17th, Annual Meeting
ISBN
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ISSN
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e-ISSN
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Number of pages
1
Pages from-to
10-10
Publisher name
PPS
Place of publication
Canada, Montreal
Event location
Canada, Montreal
Event date
May 21, 2001
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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