A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method

Zinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between...

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Autores principales:	Yalçın Ali, Gönen Mehmet
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	zinc borate fire retardant whisker hydrothermal method heterogeneous reaction Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/fbab21b484e04e679c8813dc747d3eb0
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spelling	oai:doaj.org-article:fbab21b484e04e679c8813dc747d3eb02021-12-05T14:10:55ZA novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method2191-021910.1515/mgmc-2021-0001https://doaj.org/article/fbab21b484e04e679c8813dc747d3eb02021-01-01T00:00:00Zhttps://doi.org/10.1515/mgmc-2021-0001https://doaj.org/toc/2191-0219Zinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between solid zinc oxide and boric acid solution. A stoichiometric amount of zinc oxide and 5.0% excess boric acid were used in experiments and the other parameters, mixing speed (1700 rpm), the solid-liquid ratio of 20%, and the amount of seed crystal (3.9% wt) were kept constant for all experiments. A 91.1% conversion was obtained at 120°C for 5 h of reaction time. Precipitated product was filtered and washed by hot water to remove the excess boric acid. Finally it was dried until reaching to a constant mass in an air circulating oven at 105°C. Powder products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR spectrum and XRD pattern of powders are consistent with data of the zinc borate given in the literature. According to SEM analysis, whiskers are less than 1 μm in diameter and their lengths are in the range of 1–10 μm.Yalçın AliGönen MehmetDe Gruyterarticlezinc boratefire retardantwhiskerhydrothermal methodheterogeneous reactionChemistryQD1-999ENMain Group Metal Chemistry, Vol 44, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	zinc borate fire retardant whisker hydrothermal method heterogeneous reaction Chemistry QD1-999
spellingShingle	zinc borate fire retardant whisker hydrothermal method heterogeneous reaction Chemistry QD1-999 Yalçın Ali Gönen Mehmet A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
description	Zinc borate having the formula of 4ZnO·B2O3·H2O has been used as a fire retardant for polymers requiring high processing temperatures since it has a high dehydration temperature (around 415°C). The effects of reaction time, reaction temperature were investigated on the heterogeneous reaction between solid zinc oxide and boric acid solution. A stoichiometric amount of zinc oxide and 5.0% excess boric acid were used in experiments and the other parameters, mixing speed (1700 rpm), the solid-liquid ratio of 20%, and the amount of seed crystal (3.9% wt) were kept constant for all experiments. A 91.1% conversion was obtained at 120°C for 5 h of reaction time. Precipitated product was filtered and washed by hot water to remove the excess boric acid. Finally it was dried until reaching to a constant mass in an air circulating oven at 105°C. Powder products were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR spectrum and XRD pattern of powders are consistent with data of the zinc borate given in the literature. According to SEM analysis, whiskers are less than 1 μm in diameter and their lengths are in the range of 1–10 μm.
format	article
author	Yalçın Ali Gönen Mehmet
author_facet	Yalçın Ali Gönen Mehmet
author_sort	Yalçın Ali
title	A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
title_short	A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
title_full	A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
title_fullStr	A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
title_full_unstemmed	A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method
title_sort	novel approach for the production of zinc borate (4zno·b2o3·h2o) using a single-step hydrothermal method
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/fbab21b484e04e679c8813dc747d3eb0
work_keys_str_mv	AT yalcınali anovelapproachfortheproductionofzincborate4znob2o3h2ousingasinglestephydrothermalmethod AT gonenmehmet anovelapproachfortheproductionofzincborate4znob2o3h2ousingasinglestephydrothermalmethod AT yalcınali novelapproachfortheproductionofzincborate4znob2o3h2ousingasinglestephydrothermalmethod AT gonenmehmet novelapproachfortheproductionofzincborate4znob2o3h2ousingasinglestephydrothermalmethod
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A novel approach for the production of zinc borate (4ZnO·B2O3·H2O) using a single-step hydrothermal method

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