Alternative secondary accelerator for silica-filled natural rubber formulations

Wisut Kaewsakul; Kannika Sahakaro; Wilma K. Dierkes; Jacobus W.M. Noordermeer

Alternative secondary accelerator for silica-filled natural rubber formulations

Wisut Kaewsakul, Kannika Sahakaro, Wilma K. Dierkes, Jacobus W.M. Noordermeer

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Abstract

Dithiophosphate (DTP) displays a good efficiency towards improved overall properties of silica-reinforced natural rubber compounds, when it is used as secondary accelerator in a sulfenamide primary accelerated sulfur vulcanization system. Comparing DTP with diphenylguanidine (DPG), DTP is more reactive and gives lower reversion leading to a lower amount required for vulcanization and better aging properties. An increase of chemically bound rubber content accompanied with a lowered Payne effect is obtained when secondary accelerator is used. A potential coupling ability of DTP can be postulated. The optimal amounts of DTP and DPG are approximately 0.8 and 1.1 phr, i.e. 1.4 and 2.0 wt% relative to silica content, respectively.

Original language	English
Pages (from-to)	33-38
Number of pages	6
Journal	KGK Kautschuk, Gummi, Kunststoffe
Volume	66
Issue number	9 (2013)
Publication status	Published - 2013

Keywords

METIS-299841
IR-88394

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http://www.kgk-rubberpoint.de/texte/anzeigen/4636/Alternative-Secondary-Accelerator-for-Silica-Filled-Natural-Rubber-Formulations

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title = "Alternative secondary accelerator for silica-filled natural rubber formulations",

abstract = "Dithiophosphate (DTP) displays a good efficiency towards improved overall properties of silica-reinforced natural rubber compounds, when it is used as secondary accelerator in a sulfenamide primary accelerated sulfur vulcanization system. Comparing DTP with diphenylguanidine (DPG), DTP is more reactive and gives lower reversion leading to a lower amount required for vulcanization and better aging properties. An increase of chemically bound rubber content accompanied with a lowered Payne effect is obtained when secondary accelerator is used. A potential coupling ability of DTP can be postulated. The optimal amounts of DTP and DPG are approximately 0.8 and 1.1 phr, i.e. 1.4 and 2.0 wt% relative to silica content, respectively.",

keywords = "METIS-299841, IR-88394",

author = "Wisut Kaewsakul and Kannika Sahakaro and Dierkes, {Wilma K.} and Noordermeer, {Jacobus W.M.}",

year = "2013",

language = "English",

volume = "66",

pages = "33--38",

journal = "KGK Kautschuk, Gummi, Kunststoffe",

issn = "0948-3276",

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number = "9 (2013)",

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TY - JOUR

T1 - Alternative secondary accelerator for silica-filled natural rubber formulations

AU - Kaewsakul, Wisut

AU - Sahakaro, Kannika

AU - Dierkes, Wilma K.

AU - Noordermeer, Jacobus W.M.

PY - 2013

Y1 - 2013

N2 - Dithiophosphate (DTP) displays a good efficiency towards improved overall properties of silica-reinforced natural rubber compounds, when it is used as secondary accelerator in a sulfenamide primary accelerated sulfur vulcanization system. Comparing DTP with diphenylguanidine (DPG), DTP is more reactive and gives lower reversion leading to a lower amount required for vulcanization and better aging properties. An increase of chemically bound rubber content accompanied with a lowered Payne effect is obtained when secondary accelerator is used. A potential coupling ability of DTP can be postulated. The optimal amounts of DTP and DPG are approximately 0.8 and 1.1 phr, i.e. 1.4 and 2.0 wt% relative to silica content, respectively.

AB - Dithiophosphate (DTP) displays a good efficiency towards improved overall properties of silica-reinforced natural rubber compounds, when it is used as secondary accelerator in a sulfenamide primary accelerated sulfur vulcanization system. Comparing DTP with diphenylguanidine (DPG), DTP is more reactive and gives lower reversion leading to a lower amount required for vulcanization and better aging properties. An increase of chemically bound rubber content accompanied with a lowered Payne effect is obtained when secondary accelerator is used. A potential coupling ability of DTP can be postulated. The optimal amounts of DTP and DPG are approximately 0.8 and 1.1 phr, i.e. 1.4 and 2.0 wt% relative to silica content, respectively.

KW - METIS-299841

KW - IR-88394

M3 - Article

VL - 66

SP - 33

EP - 38

JO - KGK Kautschuk, Gummi, Kunststoffe

JF - KGK Kautschuk, Gummi, Kunststoffe

SN - 0948-3276

IS - 9 (2013)

ER -

Alternative secondary accelerator for silica-filled natural rubber formulations

Abstract

Keywords

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