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Evaluation of planar and uniaxial extensional viscosities for different polyolefins
for planar and uniaxial extensional viscosity measurements by using standard twin bore extensional viscosities and its maximum is shifted to the higher strain rates extensional viscosity within w...
BK - Mechanika tekutin
- 2013 •
- O
Rok uplatnění
O - Ostatní výsledky
Analysis of entrance pressure drop techniques for extensional viscosity determination
extensional viscosity data determination from entrance pressure drop measurements has been precise extensional viscosity measurements for polymer melts in comparison with conventional orifice dies. Moreover, it ha...
CD - Makromolekulární chemie
- 2009 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Planar extensional viscosity measurements for LDPE polymer melt by using novel orifice die design and Cogswell model
proposed and tested for planar extensional viscosity measurements of extrusion coating uniaxial extensional viscosity data and different strain hardening level in both viscosities has been identified. It ...
CD - Makromolekulární chemie
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Determination of uniaxial extensional viscosity for polyolefins by improved entrance pressure drop measurements
In this work, specially designed zero-length dies were used for the entrance pressure drop measurements with the aim to determine uniaxial extensional viscosity and the results were compared with the extensional rheology de...
CD - Makromolekulární chemie
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
Improvement in Techniques to Determine Extensional Rheology from Entrance Flows
The results show that the 'entrance viscosity' (entrance pressure drop divided by the shear rate) strongly depends on the shape of the steady extensional viscosity, the L to improve the capability of the entrance techniques...
CD - Makromolekulární chemie
- 2002 •
- D
Rok uplatnění
D - Stať ve sborníku
Measurement and modeling of planar and uniaxial extensional viscosities for LDPE polymer melt
been used in order to determine planar and uniaxial extensional viscosities bore capillary rheometr. It has been revealed that the uniaxial extensional viscosity/uniaxial extensional strain hardening is h...
CD - Makromolekulární chemie
- 2012 •
- D
Rok uplatnění
D - Stať ve sborníku
Development and testing of novel orifice die design for extensional viscosity measurements
extensional viscosity measurements for polymer melts in comparison with conventionallyIn this work, novel patent pending orifice die design for precise extensional viscosity data determination from entrance pressu...
CD - Makromolekulární chemie
- 2009 •
- D
Rok uplatnění
D - Stať ve sborníku
Measurements and modeling of temperature-strain rate dependent uniaxial and planar extensional viscosities for branched LDPE polymer melt
hardening occurrence in both uniaxial and planar extensional viscosities and its maximum to be higher in comparison with the planar extensional viscosity within wide range utilized for temperature-strain rate depe...
CD - Makromolekulární chemie
- 2016 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Evaluation of Planar and Uniaxial Extensional Viscosities for Linear and Branched Polyolefins
In this work, planar and uniaxial extensional viscosities for linear and branched polyolefins has been determined through entrance pressure drop technique on conventional twin bore capillary rheometer by using novel circular and rec...
CD - Makromolekulární chemie
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Modeling of shear and uniaxial extensional viscosities in very wide deformation rates for linear isotactic polypropylene meltblown grades
In this work, shear and uniaxial extensional viscosity data, experimentally constitutive equations, which utilizes infinite shear viscosity as the material parameter. It was shown that Giesekus model has no capability to de...
Polymer science
- 2020 •
- D
Rok uplatnění
D - Stať ve sborníku
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