The Effect of Silane Coupling Agent on the Properties of Natural Rubber Filled with Waste Silicon Carbide

Abstract:

The effect of a silane coupling on curing characteristics, mechanical properties, abrasion behavior and swelling behavior of waste silicon carbide filled natural rubber compounds was investigated in the concentration 3%, 6%, 9%, 12% and 15% by weight of the particles. The waste silicon carbide content in this study was fixed at 30 phr in order to reveal the influence of silane-69 used to modify silicon carbide. The rubber compounds were prepared using a laboratory two roll mill with temperature maintained at 50°C. The curing characteristics of the composites were determined and the composites were vulcanized at 160°C using a hot press. The properties of the natural rubber compounds such as modulus at 200% elongation, stress at peak, hardness, abrasion resistance and swelling behavior were studied. Results indicate that the maximum torque of the natural rubber compounds increased with increasing silane-69 content whereas the silane-69 can be used without much effect on the scorch time and cure time. Increasing silane-69 content also gives natural rubber compounds better resistance towards swelling and increases the modulus at 200% elongation, tensile strength, hardness and abrasion resistance. The dispersion morphology of silicon carbide in the natural rubber composites was observed by scanning electron microscopy. The modified particles with improved interfacial adhesion between waste silicon carbide and natural rubber. Improvement in mechanical properties of the composites was obtained.

• Periodical: Key Engineering Materials (Volume 737)
• Pages: 236-241
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.737.236
• Online since: June 2017
• Authors: Apaipan Rattanapan*, Pornsri Sapsrithong, Surakit Tuampoemsab
• Keywords: Mechanical Properties, Natural Rubber, Silane Coupling Agent, Waste Silicon Carbide

References

[1] A. Rattanapan, S. Tuampoemsab, R. Dangtungee, Mechanical and morphological properties of silicon carbide filled polypropylene composites with PP-g-MA as compatibilizer, Adv. Mater. Res. 747 (2013) 39-42.

DOI: 10.4028/www.scientific.net/amr.747.39

[2] A. Rattanapan, N. Sornsuwit, R. Dangtungee, Rheological behavior and extrudate swell of polypropylene/silicon carbide composites, Adv. Mater. Res. 747 (2013) 595-598.

DOI: 10.4028/www.scientific.net/amr.747.595

[3] R. Dangtungee, A. Rattanapan, S. Siengchin, The effect of surface modifiers on the mechanical and morphological properties of waste silicon carbide filled high-density polyethylene, Int. J. Chem. Nucl. Mater. Metallurgical Eng. 9(1) (2015).

[4] A. Rattanapan, J. Paksamut, P. Pakeyangkoon, S. Tuampoemsab, Waste silicon carbide as filler for natural rubber compounds, Adv. Mater. Res. 979 (2014) 155-158.

DOI: 10.4028/www.scientific.net/amr.979.155

[5] C. M. Blow, C. Hepburn, Rubber Technology and Manufacture, second ed., Butterworth Secientific, London, (1982).

[6] H. Ismail, H. M. Hairunezam, The effect of a compatibilizer on curing characteristics, mechanical properties and oil resistance of styrene butadiene rubber/epoxidized natural rubber blends, Eur. Polym. J. 37(1) (2001) 39-44.

DOI: 10.1016/s0014-3057(00)00099-9

[7] H. Ismail, J. M. Nizam, H. P. S. Abdul Khalil, The effect of a compatibilizer on the mechanical properties and mass swell of white rice husk ash filled natural rubber/linear low density polyethylene blend, Polym. Test. 20(2) (2001) 125-133.

DOI: 10.1016/s0142-9418(00)00013-1

[8] D. Nwabunma, T. Kyu, Polyolefin Composites, Wiley New, Canada, (2008).

[9] N. Z. Noriman, H. Ismail, A. A. Rashid, Characterization of styrene butadiene rubber/recycled acrylonitrile-butadiene rubber (SBR/NBRr) blends: The effects of epoxidized natural rubber (ENR-50) as a compatibilizer, Polym. Test. 29(2) (2010).

DOI: 10.1016/j.polymertesting.2009.11.002

[10] P. Sae-oui, U. Thepsuwan, K. Hatthapanit, Effect of curing system on reinforcing efficiency of silane coupling agent, Polym. Test. 23(4) (2004) 397-403.

DOI: 10.1016/j.polymertesting.2003.10.002

[11] C. Thongpin, C. Sangnil, P. Suerkong, A. Pongpilaiprertti, N. Sombatsompop, The effect of excess silane-69 used for surface modification on cure characteristic and mechanical properties of precipitated silica filled natural rubber (PSi/NR), Adv. Mater. Res. 79-82 (2009).

DOI: 10.4028/www.scientific.net/amr.79-82.2171

[12] X. O. Zhong, H. Ismail, A. Abu Bakar, Curing characteristics, mechanical, morphological, and swelling assessment of liquid epoxidized natural rubber coated oil palm ash reinforced natural rubber composites, Polym. Test. 33 (2014) 145-151.

DOI: 10.1016/j.polymertesting.2013.11.007

[13] K. L. Pickering, S. Raa Khimi, S. Ilanko, The effect of silane coupling agent on iron sand for use in magnetorheological elastomers Part 1: Surface chemical modification and characterization, Compos. Part A. 68 (2015) 377-386.

DOI: 10.1016/j.compositesa.2014.10.005