Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder
This paper represents the rheology of screen printing pastes based on BaTiO3 nanopowder. It is found that the pastes are shear thickened fluids with subsequent shear thinning under high shear rates. Different concentrations of plasticizer in organic binder lead to various conformations of ethyl cell...
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De Gruyter
2016-06-01
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Series: | Applied Rheology |
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Online Access: | https://doi.org/10.3933/applrheol-26-33274 |
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doaj-72249bae72454677a399858464be1b002021-09-06T19:41:56ZengDe GruyterApplied Rheology1617-81062016-06-01263111910.3933/applrheol-26-33274Rheology of Plasticized Screen Printing Pastes Based on Batio3 NanopowderUmerova Saide0Dulina Iryna1Ragulya Andrey2Konstantinova Tatiana3Glazunova Valentina4Frantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., 03142Kyiv, UkraineFrantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., 03142Kyiv, UkraineFrantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., 03142Kyiv, UkraineFrantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., 03142Kyiv, UkraineFrantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., 03142Kyiv, UkraineThis paper represents the rheology of screen printing pastes based on BaTiO3 nanopowder. It is found that the pastes are shear thickened fluids with subsequent shear thinning under high shear rates. Different concentrations of plasticizer in organic binder lead to various conformations of ethyl cellulose molecules that influence the type of adsorption between polymer molecules and nanoparticles. The flow loop shows intervals of shear rate corresponding to rheopexy, pseudoplasticity and thixo - tropy. The appearance of rheopexy indicates that the added amount of plasticizer may be insufficient to bind the majority of free functional groups of the polymer and the remaining groups are bound with BaTiO3 nanoparticles forming a strong structural network. But in the case of pseudoplastic structures, the polymer molecule exists in the conformation where almost all free functional groups are bound with the nanoparticle surfaces. The pseudoplastic properties of the system are caused by the structural polymer-polymer links. SEM and optical profilometry of the obtained films shows that plasticization lead to the formation of thin (less than 1 μm) smooth (Ra is equal to the size of individual BaTiO3 nanoparticle) printshttps://doi.org/10.3933/applrheol-26-33274pasterheologyrheopexypseudoplasticitythixotropy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Umerova Saide Dulina Iryna Ragulya Andrey Konstantinova Tatiana Glazunova Valentina |
spellingShingle |
Umerova Saide Dulina Iryna Ragulya Andrey Konstantinova Tatiana Glazunova Valentina Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder Applied Rheology paste rheology rheopexy pseudoplasticity thixotropy |
author_facet |
Umerova Saide Dulina Iryna Ragulya Andrey Konstantinova Tatiana Glazunova Valentina |
author_sort |
Umerova Saide |
title |
Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder |
title_short |
Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder |
title_full |
Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder |
title_fullStr |
Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder |
title_full_unstemmed |
Rheology of Plasticized Screen Printing Pastes Based on Batio3 Nanopowder |
title_sort |
rheology of plasticized screen printing pastes based on batio3 nanopowder |
publisher |
De Gruyter |
series |
Applied Rheology |
issn |
1617-8106 |
publishDate |
2016-06-01 |
description |
This paper represents the rheology of screen printing pastes based on BaTiO3 nanopowder. It is found that the pastes are shear thickened fluids with subsequent shear thinning under high shear rates. Different concentrations of plasticizer in organic binder lead to various conformations of ethyl cellulose molecules that influence the type of adsorption between polymer molecules and nanoparticles. The flow loop shows intervals of shear rate corresponding to rheopexy, pseudoplasticity and thixo - tropy. The appearance of rheopexy indicates that the added amount of plasticizer may be insufficient to bind the majority of free functional groups of the polymer and the remaining groups are bound with BaTiO3 nanoparticles forming a strong structural network. But in the case of pseudoplastic structures, the polymer molecule exists in the conformation where almost all free functional groups are bound with the nanoparticle surfaces. The pseudoplastic properties of the system are caused by the structural polymer-polymer links. SEM and optical profilometry of the obtained films shows that plasticization lead to the formation of thin (less than 1 μm) smooth (Ra is equal to the size of individual BaTiO3 nanoparticle) prints |
topic |
paste rheology rheopexy pseudoplasticity thixotropy |
url |
https://doi.org/10.3933/applrheol-26-33274 |
work_keys_str_mv |
AT umerovasaide rheologyofplasticizedscreenprintingpastesbasedonbatio3nanopowder AT dulinairyna rheologyofplasticizedscreenprintingpastesbasedonbatio3nanopowder AT ragulyaandrey rheologyofplasticizedscreenprintingpastesbasedonbatio3nanopowder AT konstantinovatatiana rheologyofplasticizedscreenprintingpastesbasedonbatio3nanopowder AT glazunovavalentina rheologyofplasticizedscreenprintingpastesbasedonbatio3nanopowder |
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1717765010885705728 |