کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
830132 1470351 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinforcing effect of reclaim rubber on natural rubber/polybutadiene rubber blends
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Reinforcing effect of reclaim rubber on natural rubber/polybutadiene rubber blends
چکیده انگلیسی

Mechanochemically devulcanized ground rubber tire (GRT) was revulcanized in a composition with natural rubber (NR) and polybutadiene rubber (PBR). Reclaiming of GRT was carried out by tetra methyl thiuram disulfide (TMTD) in the presence of spindle oil, a paraffin base rubber process oil. The cure characteristics and tensile properties of NR/PBR compounds were investigated. Results indicate that the minimum torque and Mooney viscosity of the NR/PBR compounds increase with increasing reclaim rubber (RR) loading whereas the scorch time remains unaltered but optimum cure time exhibits a decreasing trend due to the presence of active crosslinking sites in the reclaim rubber. The (re)vulcanization of different NR–PBR/RR blends was found to give a new low cost product with adequate properties. The mechanical properties before and after aging of NR–PBR/RR blend system and different proportions of carbon black loaded NR–PBR/RR blend system were studied. Tensile strength increases with increasing the proportion of reclaim rubber, but for all the vulcanizates the values are less than those of the control formulation. Thermogravimetric analysis of RR, NR–PBR and different NR–PBR/RR vulcanizates was carried out in order to get thermal stability of the vulcanizates. The effects of variations of RR loading on dynamic mechanical properties like loss tangent, storage and loss modulus were studied.

Figure optionsDownload as PowerPoint slideHighlights
► A new elastomer product is developed by blending of reclaim rubber with fresh rubber at various proportions.
► The improved mechanical properties of blend vulcanizates are due to the enhanced interfacial interaction between reclaim and fresh rubber.
► The DMA studies indicated that blend vulcanizates had lower internal friction losses of molecular chain.
► The SEM studies indicated that blend vulcanizates had better interface coherence and homogeneity between the reclaim rubber and matrix.
► Isothermal aging test reveals that the aging performance of reclaim rubber containing vulcanizates is superior to fresh rubber vulcanizates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design - Volume 46, April 2013, Pages 142–150
نویسندگان
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