The Use of a Co-Filler Between Silica and Crumb Rubber in Natural Rubber Latex Foam Products
Abstract
This research studied the preparation and mechanical properties of natural rubber latex foam (NRLF) using silica and the mixture of silica with crumb rubber (CRM) as filler. By varying the amount of silica at the levels of 10, 20 and 30 phr, and the ratio between silica and CRM (silica/CRM) at the levels of 0.5/1.0, 0.75/0.75 and 1.0/0.5. From the experiment, it was found that silica can disperse and blend with natural rubber latex well. The mechanical properties, density, depression and compression set of NRLF were studied. The increase in the amount of silica resulted in significant decrease in tensile strength and elongation at break of the NRLF. On the other hand, the higher percentage depression and the percentage of the permanent set after pressing of the NRLF mixed with silica were increased. In the case of using silica and crumb rubber as filler in NRLF, it was found that the characteristics of foaming were uniform. It was found that the tensile strength properties were decreased with decreasing ratio of CRM. With the reduction in the ratio of CRM, the percentage of depression and permanent set were decreased. Keyword : silica ; crumb rubber ; natural rubber ; foam ; natural rubber latex foamsReferences
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Prasertsri, S., Kurakanok, K., Sukkapan, N., & Nuinu, P. (2016). Effect of Crumb Rubber/Calcium Carbonate Ratio on Mechanical and Thermal Properties of Ethylene-Propylene Diene Rubber/Epoxidized Natural Rubber Blends. Journal of Science and Technology, Ubon Ratchathani University, 18 (3), 50-59. (in Thai)
Putkham, A.I., Tanpaiboonkul, N., Ladhan, S., Chaiyachet, Y., Sukaranandana, K., & Putkham, A. (2017). Characterization of thermal and mechanical property of latex foam rubber mixed with silica aerogel-filler. Rajabhat Journal of Sciences, Humanities & Social Sciences, 18(2), 267-277. (in Thai)
Ramasamy, S., Ismail, H., & Munusamy, Y. (2012). Preparation and characterization of rice husk powder incorporated natural rubber latex foam. Advanced Materials Research, 626, 523-529.
Rattanapan, S., Artchomphoo, J. & Wichianchom. A. (2018). Effect of waste tire powder on the properties of natural rubber latex foams. The 9th Rajamangala University of Technology International Conference “RMUT Driving Innovationfor Thailand4.0”(Proceeding)
Rattanaplome, T. (2012). Latex foam reinforced by fly ash. The 13 th TSAE National Conference and the 5th TSAE International Conference : (TSAE 2012). 743-750. (in Thai)
Surya, I., Kudori, S. N. I. & Ismail, H. (2019). Effect of partial replacement of kenaf by empty fruit bunch (efb) on the properties of natural rubber latex foam (NRLF). Bioresources, 14(4), 9375-9391.
Tomyangkul, S., Pongmuksuwan, P., Harnnarongchai, W., & Chaochanchaikul, K. (2016). Enhancing sound absorption properties of open-cell natural rubber foams with treated bagasse and oil palm fibers. Journal of Reinforced Plastics and Composites, 35, 1-10.
Karim, A. F. A, Ismail, H., & Mohamad Ariff, Z. (2015). Properties and characterization of kenaf-filled natural rubber latex foam. Bioresources,11(1), 1080-1091.
Karim, A. F. A., Ismail, H., & Ariff, Z. M. (2018). Effects of kenaf loading and alkaline treatment on properties of kenaf filled natural rubber latex foam. Sains Malaysiana, 47(9), 2163-2169.
Kovuttikulrangsie, S., & Pethrattanamunee, N. (2006). Effect of calcium carbonate on making natural rubber sponge. The Thailand research fund (TRF). 137-143. (in Thai)
Kudori, S. N. I., Ismail, H., & Shuib, R. K. (2019). Kenaf core and bast loading vs. properties of natural rubber latex foam (NRLF). Bioresources, 14(1), 1765-1780.
Lim, H. M., Manroshan, S., & Geraghty, M. (2018). Oil palm trunk fibre filled natural rubber latex biocomposite foam. Journal of Rubber Research, 21(3), 182-193.
Moonchai, D., & Aiemrum, A. (2013). Effects of defatted rice bran on properties of natural rubber latex foam. KKU science journal, 41(4), 1019-1029. (in Thai)
Pinsanor, V., Junpoonsup, S., Patcharaphun, S., & Sombatsompop, N. (2003). Effects of silica, calcium carbonate, and SiO2/CaCO3 blends on properties of cellular nr compounds. Songklanakarin Journal of Science and Technology (SJST), 25, 75-90. (in Thai)
Prasertsri, S., Kurakanok, K., Sukkapan, N., & Nuinu, P. (2016). Effect of Crumb Rubber/Calcium Carbonate Ratio on Mechanical and Thermal Properties of Ethylene-Propylene Diene Rubber/Epoxidized Natural Rubber Blends. Journal of Science and Technology, Ubon Ratchathani University, 18 (3), 50-59. (in Thai)
Putkham, A.I., Tanpaiboonkul, N., Ladhan, S., Chaiyachet, Y., Sukaranandana, K., & Putkham, A. (2017). Characterization of thermal and mechanical property of latex foam rubber mixed with silica aerogel-filler. Rajabhat Journal of Sciences, Humanities & Social Sciences, 18(2), 267-277. (in Thai)
Ramasamy, S., Ismail, H., & Munusamy, Y. (2012). Preparation and characterization of rice husk powder incorporated natural rubber latex foam. Advanced Materials Research, 626, 523-529.
Rattanapan, S., Artchomphoo, J. & Wichianchom. A. (2018). Effect of waste tire powder on the properties of natural rubber latex foams. The 9th Rajamangala University of Technology International Conference “RMUT Driving Innovationfor Thailand4.0”(Proceeding)
Rattanaplome, T. (2012). Latex foam reinforced by fly ash. The 13 th TSAE National Conference and the 5th TSAE International Conference : (TSAE 2012). 743-750. (in Thai)
Surya, I., Kudori, S. N. I. & Ismail, H. (2019). Effect of partial replacement of kenaf by empty fruit bunch (efb) on the properties of natural rubber latex foam (NRLF). Bioresources, 14(4), 9375-9391.
Tomyangkul, S., Pongmuksuwan, P., Harnnarongchai, W., & Chaochanchaikul, K. (2016). Enhancing sound absorption properties of open-cell natural rubber foams with treated bagasse and oil palm fibers. Journal of Reinforced Plastics and Composites, 35, 1-10.
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Published
2021-01-04
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Research Article
