Optimization of EPDM reclaim in EPDM compounds
Material type:
TextPublication details: Rubber Science 2015Description: 286-293Subject(s): Summary: Ethylene-propylene rubbers (EPDM) continue to be one of the most widely used and fastest growing synthetic rubbers being used in specialty and general-purpose applications. In this study, EPDM-reclaim has been used as partial replacement for virgin EPDM, which eventually reduce the production cost, provided the material properties do not deteriorate significantly. Characterisation of vulcanisates illustrate the addition of up to ten parts of EPDM reclaim to virgin rubber do not significantly deteriorate vulcanisate properties. Tensile, tear, and hardness properties were maintained almost as that of the virgin EPDM vulcanisate. Also, there is no drastic increase in heat build-up after reclaim addition. There is only a marginal reduction in thermal stability with the incorporation of EPDM reclaim. The above results were well supported by swelling analysis and dispersion study which show that as the reclaimed rubber content increases, the level of dispersion gradually deteriorates. From the findings it may be concluded that incorporation of up to 10 parts reclaimed EPDM is justifiable in EPDM vulcanisates.
| Item type | Current library | Vol info | Status | |
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Journals
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RRII Library Rubber technology | Volume 28, Issue 3 | Journals |
Ethylene-propylene rubbers (EPDM) continue to be one of the most widely used and fastest growing synthetic rubbers being used in specialty and general-purpose applications. In this study, EPDM-reclaim has been used as partial replacement for virgin EPDM, which eventually reduce the production cost, provided the material properties do not deteriorate significantly. Characterisation of vulcanisates illustrate the addition of up to ten parts of EPDM reclaim to virgin rubber do not significantly deteriorate vulcanisate properties. Tensile, tear, and hardness properties were maintained almost as that of the virgin EPDM vulcanisate. Also, there is no drastic increase in heat build-up after reclaim addition. There is only a marginal reduction in thermal stability with the incorporation of EPDM reclaim. The above results were well supported by swelling analysis and dispersion study which show that as the reclaimed rubber content increases, the level of dispersion gradually deteriorates. From the findings it may be concluded that incorporation of up to 10 parts reclaimed EPDM is justifiable in EPDM vulcanisates.
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