On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends

The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds. Two roles of DPG are well known to be: adsorption onto silica surface to reduce the acidic sites and second to boost the silanization reaction as secondary accelerator. Howe...

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Autores principales:	Jungmin Jin, Andries P.J. van Swaaij, Jacques W.M. Noordermeer, Anke Blume, Wilma K. Dierkes
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	1,3-Diphenylguanidine DPG Silanization Silica Silane TESPT Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/e006ab21821d473bb2f2ddfbe1ea0d7f
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spelling	oai:doaj.org-article:e006ab21821d473bb2f2ddfbe1ea0d7f2021-11-24T04:23:29ZOn the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends0142-941810.1016/j.polymertesting.2020.106858https://doaj.org/article/e006ab21821d473bb2f2ddfbe1ea0d7f2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941820320870https://doaj.org/toc/0142-9418The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds. Two roles of DPG are well known to be: adsorption onto silica surface to reduce the acidic sites and second to boost the silanization reaction as secondary accelerator. However, these two roles are in a way conflicting. When DPG molecules occupy the reactive silanol sites on silica by adsorption, then the access of silane molecules needed for silica-rubber coupling is blocked. Therefore, it may be assumed that there is another role DPG plays in silica filled rubber compounds. In order to evaluate another role which can reconcile these contradictory functions of DPG, a series of rubber compound mixings was performed with different DPG concentrations in the masterbatch and final stages. Additionally, a series of model reaction experiments has been done in combination with other ingredients, such as zinc oxide and stearic acid. According to the results a new role of DPG is observed: DPG possibly reacts with the silane coupling agent bis-(triethoxysilylpropyl)tetrasulfide (TESPT) and releases sulfur during the mixing process, which enhances filler-polymer coupling, but reduces cure rate and crosslink density.Jungmin JinAndries P.J. van SwaaijJacques W.M. NoordermeerAnke BlumeWilma K. DierkesElsevierarticle1,3-DiphenylguanidineDPGSilanizationSilicaSilaneTESPTPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106858- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	1,3-Diphenylguanidine DPG Silanization Silica Silane TESPT Polymers and polymer manufacture TP1080-1185
spellingShingle	1,3-Diphenylguanidine DPG Silanization Silica Silane TESPT Polymers and polymer manufacture TP1080-1185 Jungmin Jin Andries P.J. van Swaaij Jacques W.M. Noordermeer Anke Blume Wilma K. Dierkes On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
description	The aim of this study was to evaluate the various roles of 1,3-DiPhenyl Guanidine (DPG) in silica-reinforced rubber compounds. Two roles of DPG are well known to be: adsorption onto silica surface to reduce the acidic sites and second to boost the silanization reaction as secondary accelerator. However, these two roles are in a way conflicting. When DPG molecules occupy the reactive silanol sites on silica by adsorption, then the access of silane molecules needed for silica-rubber coupling is blocked. Therefore, it may be assumed that there is another role DPG plays in silica filled rubber compounds. In order to evaluate another role which can reconcile these contradictory functions of DPG, a series of rubber compound mixings was performed with different DPG concentrations in the masterbatch and final stages. Additionally, a series of model reaction experiments has been done in combination with other ingredients, such as zinc oxide and stearic acid. According to the results a new role of DPG is observed: DPG possibly reacts with the silane coupling agent bis-(triethoxysilylpropyl)tetrasulfide (TESPT) and releases sulfur during the mixing process, which enhances filler-polymer coupling, but reduces cure rate and crosslink density.
format	article
author	Jungmin Jin Andries P.J. van Swaaij Jacques W.M. Noordermeer Anke Blume Wilma K. Dierkes
author_facet	Jungmin Jin Andries P.J. van Swaaij Jacques W.M. Noordermeer Anke Blume Wilma K. Dierkes
author_sort	Jungmin Jin
title	On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
title_short	On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
title_full	On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
title_fullStr	On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
title_full_unstemmed	On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends
title_sort	on the various roles of 1,3-diphenyl guanidine in silica/silane reinforced sbr/br blends
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/e006ab21821d473bb2f2ddfbe1ea0d7f
work_keys_str_mv	AT jungminjin onthevariousrolesof13diphenylguanidineinsilicasilanereinforcedsbrbrblends AT andriespjvanswaaij onthevariousrolesof13diphenylguanidineinsilicasilanereinforcedsbrbrblends AT jacqueswmnoordermeer onthevariousrolesof13diphenylguanidineinsilicasilanereinforcedsbrbrblends AT ankeblume onthevariousrolesof13diphenylguanidineinsilicasilanereinforcedsbrbrblends AT wilmakdierkes onthevariousrolesof13diphenylguanidineinsilicasilanereinforcedsbrbrblends
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On the various roles of 1,3-DIPHENYL Guanidine in silica/silane reinforced sbr/br blends

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