Induction of viscosity increase during polyglycol addition to isocyanates

Nemaniutė, Paulina; Bražinskienė, Dalia; Asadauskas, Svajus

doi:10.5281/zenodo.4778505

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2021

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“…Initial viscosity is important, especially when using PU adhesives in laminated packaging. Blends usually thicken up during the polymerization, but unexpected drop in viscosity could be occasionally observed [2]. In this study viscosity changes during polymerization are investigated for typical PU mixtures.…”

Section: Introductionmentioning

confidence: 99%

Advanced Materials and Technologies. Book of Abstracts of 23rd International Conference-School

2021

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The semilog relationship can predict approximate PU viscosity. • During early stages of polymerization the viscosity is highly dependent on shear, which is more evident at lower temperatures [4]. • Despite ongoing polymerization, viscosity seems to drop initially and then stagnate. • It remains unclear what causes such unusual tendencies of viscosity dependence on polymerization and shear. DISCLAIMER This presentation reflects only the views of the authors. European Commission, Research Executive Agency, and FTMC (Center for Physical Sciences and Technology) are not responsible for any use that may be made of the information it contains, see §29.5 of "H2020 General Model Grant Agreement" for details.

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Section: Introductionmentioning

confidence: 99%

Advanced Materials and Technologies. Book of Abstracts of 23rd International Conference-School

2021

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Induction of viscosity increase during polyglycol addition to isocyanates

Cited by 1 publication

References 0 publications

Advanced Materials and Technologies. Book of Abstracts of 23rd International Conference-School

Advanced Materials and Technologies. Book of Abstracts of 23rd International Conference-School

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