Development of polyurethane dispersion based on aromatic isocyanat: influence of NCO/OH ratio on physico-mechanical properties of PUD

Autor:	A. Narimanov, T. Ketegenov, G.S. Irmukhametova, Grigoriy A. Mun, H. Rafikova, M. Zhangaliyev, Rinat Iskakov, E. S. Negim
Rok vydání:	2016
Předmět:	Contact angle chemistry.chemical_classification Viscosity chemistry.chemical_compound Materials science Chemical engineering chemistry Polymerization Ultimate tensile strength Polymer Prepolymer Tensile testing Polyurethane
Zdroj:	International Journal of Biology and Chemistry. 9:73-78
ISSN:	2409-370X 2218-7979
Popis:	Aqueous polyurethane dispersions (PUDs) were prepared by the prepolymer mixing technique solventfree using aromatic isocyanat[toluene diisocyanate (TDI)], poly(oxytetramethylene) glycol (PTMG), dimethylol propionic acid (DMPA). The properties of both the dispersion’s and casting polymer films were characterized byparticle size analyzer, viscosity and tensile tester. IR spectroscopy was used to check the end of polymerization reaction and characterization of polymer. The effect of NCO/OH molar ratio on the physico-mechanical properties of the polyurethanes was studied. Results showed that tensile strength, contact angle and average particle size increase with increase of NCO/OH molar ratios. Elongation at break and viscosity decrease with increase of NCO/OH molar ratios.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::133353921d628cb35958cf9a11603ed9 https://doi.org/10.26577/2218-7979-2016-9-1-73-78 Zobrazit plný text záznamu Plný text ve formátu PDF