The use of epoxidized natural rubber for producing rubber seals of LPG tube valves

Hani Handayani, Mohammad Irfan Fathurrohman, Norma Arisanti Kinasih, Asron Ferdian Falaah

Abstract


Rubber seal of Liquifed Petroleum Gas (LPG) tube valves should fulfill Indonesian National Standard (SNI 7655:2010), which has high n-pentane resistance properties. This study aimed to design a rubber seal compound based on epoxidized natural rubber which fulfll SNI 7655:2010 requirements. The formulation of compound were designed by using epoxidized natural rubber with varied levels of epoxidation. Epoxidation reaction was occurred in an epoxidation reactor at 70 ºC for 6 hours with 0.75 mole/mole isoprene unit of hydrogen peroxide and 0.4 mole/mole isoprene unit of formic acid. Mechanical properties, ageing properties, and swelling performance in n-pentane of the modifed natural rubber were tested and the result compared to the minimum requirement of SNI 7655:2010. The result showed that the increasing in epoxidation level made natural rubber becomes more polar so it is more resistant to immersion in n-pentane. Epoxidized natural rubber with levels of 40% and 50% fulfilled specifcations for volume change in accordance with the quality requirements in SNI 7655:2010. The use of natural rubber created good elasticity to all level of epoxidized rubber where these properties are needed for rubber seal of LPG tube valve. However, the formulas of compound were less resistant to aging.

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References


Baker, C. S. L., & Gelling, I. R. (1979). Epoxidized natural rubber. In A. Wheelan, & K. S. Lee (Eds.), Developments in rubber technology (4th ed., pp. 87-117). Netherlands: Springer.

Baker, C. S. L., Gelling, I. R., & Newell, R. (1985). Epoxidized natural rubber. Rubber Chemistry and Technology, 58(1), 67–85. https://doi.org/10.5254/1.3536059

BSN (Badan Standardisasi Nasional). (2010). Standard Nasional Indonesia SNI 7655:2010 Karet perapat (rubber seal) pada katup tabung LPG. Jakarta, Indonesia: BSN.

Chakraborty, S., Kar, S., Ameta, R., Dasgupta, S., Mukhopadhyay, R., & Bandyopadhyay, S. (2010). Quantitative application of FTIR in rubber. Rubber World, 24(1), 33–39.

Choi, S., & Ha, S. (2009). Influence of the swelling temperature and acrylonitrile content of NBR on the water swelling behaviors of silica-filled NBR vulcanizates. Journal of Industrial and Engineering Chemistry, 15(2), 167–170. https://doi.org/10.1016/j.jiec.2008.09.016

Choi, S., Hwang, K., & Kim, B. (2005). Influence of bound polymer on cure characteristics of natural rubber compounds reinforced with different types of carbon blacks. Journal of Applied Polymer Science, 98(5), 2282–2289. https://doi.org/10.1002/app.22287

Handayani, H., Fathurrohman, M. I., & Kuncoro, I. (2011). Karakteristik sifat fisik dan ketahanan terhadap minyak dari karet alam epoksi. Jurnal Penelitian Karet, 29(1), 49–62. https://doi.org/10.22302/ppk.jpk.v29i1.111

Handayani, H., Fathurrohman, M. I., Kinasih, N. A., & Falaah, A. F. (2017). Karet alam epoksi sebagai bahan baku pembuatan komponen karet pada katup tabung dan regulator LPG. Jurnal Penelitian Karet, 35(2), 199–210. https://doi.org/10.22302/ppk.jpk.v35i2.416

Ismail, H., Majid, R. A., & Taib, R. M. (2014). Effects of dynamic vulcanization on tensile, morphological, and swelling properties of poly(vinyl chloride) (PVC)/epoxidized natural rubber (ENR)/(Kenaf core powder) composites. Journal of Vinyl & Additive Technology, 22(3), 206–212. https://doi.org/10.1002/vnl.21401

Kinasih, N. A., & Fathurrohman, M. I. (2016). Pengaruh kondisi reaksi terhadap karakteristik ketahanan karet alam epoksi dalam n-pentana. Jurnal Sains Materi Indonesia, 17(3), 102–109. https://doi.org/10.17146/jsmi.2016.17.3.4190

Mei, C., Yong‐Zhou, W., Guang, L., & Xiao‐Ping, W. (2012). Effects of different drying methods on the microstructure and thermal oxidative aging resistance of natural rubber. Journal of Applied Polymer Science, 126(6), 1808–1813. https://doi.org/10.1002/app.34300

Mostafa, A., Abouel-Kasim, A., Bayoumi, M. R., & El-Sebaie, M. G. (2009). Effect of carbon black loading on the swelling and compression set behavior of SBR and NBR rubber compounds. Materials & Design, 30(5), 1561–1568. https://doi.org/10.1016/j.matdes.2008.07.043

Okwu, U. N., & Okieimen, F. E. (2001). Preparation and properties of thioglycollic acid modified epoxidised natural rubber and its blends with natural rubber. European Polymer Journal, 37(11), 2253–2258. https://doi.org/10.1016/S0014-3057(01)00112-4

Oommen, Z., Nair, M. R. G., & Thomas, S. (1996). Compatibilizing effect of natural rubber-g-poly(methyl methacrylate) in heterogeneous natural rubber/poly(methyl methacrylate) blends. Polymer Engineering & Science, 36(1), 151–160. https://doi.org/10.1002/pen.10396

Roy, S., Bhattacharjee, S., & Gupta, B. R. (1993). Hydrogenation of epoxidized natural rubber. Journal of Applied Polymer Science, 49(3), 375–380. https://doi.org/10.1002/app.1993.070490301

Sengloyluan, K., Sahakaro, K., Dierkes, W. K., & Noordermeer, J. W. M. (2012). Use of epoxidized natural rubber as compatibilizer in silica-filled natural rubber compounds. Paper presented at 28th International Conference of the Polymer Processing Society, 1–4.

Surya, I., Maulina, S., & Ismail, H. (2018). Effects of alkanolamide and epoxidation in natural rubber and epoxidized natural rubbers compounds. IOP Conference Series: Materials Science and Engineering, 299, 012061. https://doi.org/10.1088/1757-899X/299/1/012061

Surya, I., Hayeemasae, N., & Ginting, M. (2018). Cure characteristics, crosslink density and degree of filler dispersion of kaolin-filled natural rubber compounds in the presence of alkanolamide. IOP Conference Series: Materials Science and Engineering, 343, 012009. https://doi.org/10.1088/1757-899X/343/1/012009

Tanrattanakul, V., Wattanathai, B., Tiangjunya, A., & Muhamud, P. (2003). In situ epoxidized natural rubber: Improved oil resistance of natural rubber. Journal of Applied Polymer Science, 90(1), 261–269. https://doi.org/10.1002/app.12706

ten Brinke, J. W., Debnath, S. C., Reuvekamp, L. A. E. M., & Noordermeer, J. W. M. (2003). Mechanistic aspects of the role of coupling agents in silica–rubber composites. Composites Science and Technology, 63(8), 1165–1174. https://doi.org/10.1016/S0266-3538(03)00077-0

Wang, H. M., Lv, X. R., & Wang, S. J. (2014). The swelling properties of nitrile rubber with different acrylonitrile contents in cyclohexane medium research. Advanced Materials Research, 936, 1942–1947. https://doi.org/10.4028/www.scientific.net/amr.936.1942




DOI: http://dx.doi.org/10.20543/mkkp.v37i2.6775

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