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KMID : 1024520100190030365
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Journal of the Environmental Sciences
2010 Volume.19 No. 3 p.365 ~ p.370
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A Study on Recycling of EPDM Reclaimed Rubber
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Jang Do-Hee
Kim Ji-Hoon
Kim Young-Joo
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Abstract
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In this study, we carried out the evaluation of EPDM(Ethylene Propylene Diene Monomer ) reclaimed rubber mixing with natural rubber at various mixing ratio to reuse as rubber filler. The scorch time and moony viscosity was analyzed to evaluate the effect of cure behavior. And also, we analyzed the tensile strength, the elongation at break and cure time to evaluate the variation of cure behavior. As the results, the scorch time and optimal cure time was decreased according to the increasing of EPDM reclaimed rubber. However, the moony viscosity was increased at each mixing ratio. In case of the added EPDM reclaimed rubber was 20 phr(parts by weight per 100 parts by weight of rubber), the hardness and specific gravity was increased a little. The hardness and specific gravity was increased in rapidly under 40 phr of the added EPEM reclaimed rubber. The tensile strength and elongation at break of the compound of natural and EPDM reclaimed rubber was rapidly decreased compared with its natural rubber when the ratio of adding EPDM reclaimed rubber was over 40 phr.
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KEYWORD
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EPDM, Scorch time, Moony viscosity, Tensile strength, Cure behavior
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