Optimization of mixing conditions for silica-reinforced natural rubber tire tread compounds

Research output: Contribution to journalArticleAcademicpeer-review

65 Citations (Scopus)

Abstract

The dump temperature and mixing interval between rubber, silica, and silane coupling agent for silica-filled natural rubber (NR) tire tread compounds using bis-triethoxysilylpropyl tetrasulfide (TESPT) as silane were optimized. The dump temperature turns out to be the key parameter governing the properties of the silica-filled NR compounds. The increase in viscosity of the compounds by changing the dump temperature from 100 to 150 °C indicates that inevitably some cross-linking of NR occurs by sulfur contained in TESPT, simultaneous with the silanization reaction between silica and silane. However, the viscosity decreases again when dump temperatures above 150 °C are applied, indicating a dominant occurrence of degradation of the NR molecules. The results are in good agreement with bound rubber contents. The overall properties indicate that a dump temperature in the range of 135–150 °C and a silica–silane–rubber mixing interval of 10 min are the most appropriate mixing conditions for silica-filled NR compounds with TESPT as coupling agent.
Original languageEnglish
Pages (from-to)277-294
Number of pages18
JournalRubber chemistry and technology
Volume85
Issue number2
DOIs
Publication statusPublished - 2012

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Rubber
Tires
Silicon Dioxide
Silica
Silanes
Coupling agents
Temperature
Viscosity
Sulfur
Degradation
Molecules

Keywords

  • METIS-292959
  • IR-83137

Cite this

@article{b0ee126c23fc4bfdae734d43fba18885,
title = "Optimization of mixing conditions for silica-reinforced natural rubber tire tread compounds",
abstract = "The dump temperature and mixing interval between rubber, silica, and silane coupling agent for silica-filled natural rubber (NR) tire tread compounds using bis-triethoxysilylpropyl tetrasulfide (TESPT) as silane were optimized. The dump temperature turns out to be the key parameter governing the properties of the silica-filled NR compounds. The increase in viscosity of the compounds by changing the dump temperature from 100 to 150 °C indicates that inevitably some cross-linking of NR occurs by sulfur contained in TESPT, simultaneous with the silanization reaction between silica and silane. However, the viscosity decreases again when dump temperatures above 150 °C are applied, indicating a dominant occurrence of degradation of the NR molecules. The results are in good agreement with bound rubber contents. The overall properties indicate that a dump temperature in the range of 135–150 °C and a silica–silane–rubber mixing interval of 10 min are the most appropriate mixing conditions for silica-filled NR compounds with TESPT as coupling agent.",
keywords = "METIS-292959, IR-83137",
author = "Wisut Kaewsakul and Kannika Sahakaro and Dierkes, {Wilma K.} and Noordermeer, {Jacobus W.M.}",
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language = "English",
volume = "85",
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journal = "Rubber chemistry and technology",
issn = "0035-9475",
publisher = "American Chemical Society",
number = "2",

}

Optimization of mixing conditions for silica-reinforced natural rubber tire tread compounds. / Kaewsakul, Wisut; Sahakaro, Kannika; Dierkes, Wilma K.; Noordermeer, Jacobus W.M.

In: Rubber chemistry and technology, Vol. 85, No. 2, 2012, p. 277-294.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Optimization of mixing conditions for silica-reinforced natural rubber tire tread compounds

AU - Kaewsakul, Wisut

AU - Sahakaro, Kannika

AU - Dierkes, Wilma K.

AU - Noordermeer, Jacobus W.M.

PY - 2012

Y1 - 2012

N2 - The dump temperature and mixing interval between rubber, silica, and silane coupling agent for silica-filled natural rubber (NR) tire tread compounds using bis-triethoxysilylpropyl tetrasulfide (TESPT) as silane were optimized. The dump temperature turns out to be the key parameter governing the properties of the silica-filled NR compounds. The increase in viscosity of the compounds by changing the dump temperature from 100 to 150 °C indicates that inevitably some cross-linking of NR occurs by sulfur contained in TESPT, simultaneous with the silanization reaction between silica and silane. However, the viscosity decreases again when dump temperatures above 150 °C are applied, indicating a dominant occurrence of degradation of the NR molecules. The results are in good agreement with bound rubber contents. The overall properties indicate that a dump temperature in the range of 135–150 °C and a silica–silane–rubber mixing interval of 10 min are the most appropriate mixing conditions for silica-filled NR compounds with TESPT as coupling agent.

AB - The dump temperature and mixing interval between rubber, silica, and silane coupling agent for silica-filled natural rubber (NR) tire tread compounds using bis-triethoxysilylpropyl tetrasulfide (TESPT) as silane were optimized. The dump temperature turns out to be the key parameter governing the properties of the silica-filled NR compounds. The increase in viscosity of the compounds by changing the dump temperature from 100 to 150 °C indicates that inevitably some cross-linking of NR occurs by sulfur contained in TESPT, simultaneous with the silanization reaction between silica and silane. However, the viscosity decreases again when dump temperatures above 150 °C are applied, indicating a dominant occurrence of degradation of the NR molecules. The results are in good agreement with bound rubber contents. The overall properties indicate that a dump temperature in the range of 135–150 °C and a silica–silane–rubber mixing interval of 10 min are the most appropriate mixing conditions for silica-filled NR compounds with TESPT as coupling agent.

KW - METIS-292959

KW - IR-83137

U2 - 10.5254/rct.12.88935

DO - 10.5254/rct.12.88935

M3 - Article

VL - 85

SP - 277

EP - 294

JO - Rubber chemistry and technology

JF - Rubber chemistry and technology

SN - 0035-9475

IS - 2

ER -