On-line, non-Newtonian capillary rheometry for continuous and in-line coatings production
نویسندگان
چکیده
Moving from traditional batch production into in-line or continuous coatings requires accurate on-line quality control instruments. The aim of the present work was to investigate principle non-Newtonian capillary rheometry for purposes. In investigation, three series acrylic-based viscoelastic coating samples with different types and concentrations pigments thickening agents were used, rheological measurements compared results obtained so-called Stormer viscometer an advanced off-line rheometer. A detailed analysis potential measurement implications also conducted. For shear stresses 15.0 350.0 Pa (the upper boundary), novel rheometer found provide in good quantitative agreement when sample holding time, thereby history, properly controlled. At a stress between 1.0 (lower boundary) Pa, not as good, difference 15% 74%. resolution sufficiently high allow detection rheology changes associated variations formulations pigment volume modifier concentrations. summary, fast evaluation rheology, capillarity has been demonstrated be varied robust technique.
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ژورنال
عنوان ژورنال: Journal of Coatings Technology and Research
سال: 2021
ISSN: ['1547-0091', '2168-8028']
DOI: https://doi.org/10.1007/s11998-020-00447-9