Prototype of Geocell from Natural Rubber: Effect of Dual-Phase Fillers on Physical Properties of Rubber Compounds Reinforced with Silica and Carbon Black

Abstract:

Geocell, a type of the geosynthetics, is normally used to improve natural geomaterial properties and performance because of confinement and confinement force. This work was an attempt to apply the solid natural rubber (NR) for producing the prototype of geocell with reinforcing the pavement structure of the road. There are three parts of all work in research, which consist of finding the optimal chemical formula, designing and producing the prototype and civil engineering testing of flexible pavement components. This research has emphasized and focused on finding the optimal chemical formula for the prototype production. The effect of silica-carbon black (CB) dual-phase filler on physical properties in terms of only static mechanical tests of the prototype was investigated. The total amount of hybrid reinforcing filler was fixed at 60 phr while the silica/CB ratios were 0/60, 10/50, 20/40, 30/30 and 40/20, respectively. Cure characteristic of the NR compound and physical properties in terms of static mechanical tests such as hardness, tensile and tear strengths of the NR vulcanizates were carried out. The results showed that time to 90% cross-linked (TC 90), hardness and tensile strength of the vulcanized rubber were increased with the increasing of silica content but not for its tear strength. Dispersion of the dual-phase filler in the prototype was reduced when the higher amount of silica in the dual-phase filler was employed as proved by images from the scanning electron microscope. There was only 60 phr CB that was selected as the optimal chemical formula for prototype production as the result of tensile and tear strength.

• Periodical: Key Engineering Materials (Volume 737)
• Pages: 572-577
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.737.572
• Online since: June 2017
• Authors: Sompatsorn Wongwilatnurak*, Surakit Tuampoemsab, Rapeephun Dangtungee
• Keywords: Carbon Black, Dual-Phase Filler, Geocell, Natural Rubber, Silica

References

[1] J. Han, Principles and practice of ground improvement, The United States of America, John Wiley & Sons, Inc., (2015).

[2] S. K. Shukla., J. H. Yin, Fundamentals of geosynthetic engineering, Taylor & Francis/Balkema, The Netherlands, (2006).

[3] B. Rodgers, Rubber compounding chemistry and applications, New York, Marcel Dekker, Inc., (2004).

[4] N. Rattanasom, T. Saowapark, C. Deeprasertkul, Reinforcement of natural rubber with silica/carbon black hybrid filler, Polymer Testing. 26 (2007) 369-377.

DOI: 10.1016/j.polymertesting.2006.12.003

[5] S. S. Choi, C. Nah, S. G. Lee, C. W. Loo, Effect of filler-filler interaction on rheological behaviour of natural rubber compounds filled with both carbon black and silica, Polym Int. 52 (2003) 23-28.

DOI: 10.1002/pi.975

[6] N. Rattanasom, S. Prasertsri, T. Ruangritnumchai, Polymer testing. 28 (2009) 8-12.

[7] S. S. Choi, C. Nah, B-W Jo, Properties of natural rubber composites reinforced with silica or carbon black: influene of cure accelerator content and filler dispersion, Polym Int. 52 (2003) 1382-1389.

DOI: 10.1002/pi.1232

[8] P.A. Ciullo, the rubber formulary, the United States of America, Noyes Publications/William Andrew Publishing, LLC, (1954).

[9] I. M. Ulfah, R. Fidyaningsih, D. A. Fitriani, D. A. Saputra, D. A. Winarto, L. A. Wisojodharmo, Influene of carbon black and silica filler on the rheological and mechanical properties of natural rubber compound, Proceedia Chemistry. 16 (2015).

DOI: 10.1016/j.proche.2015.12.053

[10] A. N. Gent, Engineering with rubber how to design rubber components, second ed., the United States of America, HanserGardner Publications Inc, (2001).

[11] A. Ciesielski, An introduction to rubber technology, first ed., the United Kingdom, Rapra Technology Limited, (1999).

[12] J. E. Mark, B. Erman, F. R. Eirich, Science and technology of rubber, third ed., the United States of America, Elsevier Inc.