Curing characteristics, mechanical and thermal properties of reclaimed ground tire rubber cured with various vulcanizing systems
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- 作者：Krzysztof Formela ; Dominik W?sowicz ; Magdalena Formela…
- 关键词：Reclaimed ground tire rubber ; Revulcanized reclaimed rubber ; Cross ; link density ; Vulcanization accelerator
- 刊名：Iranian Polymer Journal
- 出版年：2015
- 出版时间：April 2015
- 年：2015
- 卷：24
- 期：4
- 页码：289-297
- 全文大小：994 KB
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- 出版者：Springer Berlin Heidelberg
- ISSN：1735-5265
文摘
Ground tire rubber was thermo-mechanical reclaimed at 120?°C using a co-rotating twin screw extruder. The effect of vulcanizing system type on curing characteristics, static mechanical properties (tensile strength, elongation-at-break, hardness and resilience), dynamic mechanical properties and thermal properties of reclaimed ground tire rubber was investigated. Reclaimed rubber was cured using different types of vulcanization accelerators (MBT, TBBS, TMTD, DPG, CBS) commonly used in industry. Two ratios of vulcanization accelerator/sulfur [2:1 as conventional system and 1:2 as effective system (EV)] were used. Presented results indicate that static and dynamic mechanical properties of revulcanized reclaimed rubber depend strongly on vulcanizing system type. The highest cross-link density showed samples cured with TMTD which corresponds to ΔM values, glass transition temperature and equilibrium swelling degree of these products. The best processing and mechanical properties were estimated for revulcanized reclaimed rubber cured with conventional vulcanizing system based on TBBS and CBS accelerators. These results showed that reclaimed rubber obtained via low temperature extrusion is suitable for application in rubber compounds.