Majalah Kulit, Karet, dan Plastik (Jul 2005)
Pengaruh oli bekas terhadap sifat karet riklim dan kualitas vulkanisatnya
Abstract
The objective of the research was to study the effect of the used-lube oils as reclaiming oil on the production of reclaim from waste rubber of tyre-retreading industry and quality of its vulcanizate. The amounts of the lube oils were varied from 2.5 to 15% with range of 2.5% per 100 parts of waste rubber weigh. Reclaiming of rubber was carried out in a vertical autoclave at 120o for 1 hour, and reclaimed rubber were milled by two-roll mills machine. Reclaimed rubbers were compounded with RSS I to evaluate physical properties of their vulkanizates. Generally, the physical properties of vulcanizates containing produced reclaimed rubber was better than the vulcanizates containing market reclaimed rubber. The vulcanizates containing reclaim with 5% used-lube oil performed the best physical properties i.e 103.18 kg/cm2 tensile strength, 405,25% elongation at break, 50 shore A hardness, 57.11 kg/cm2 tearing resistance, 1.04 g/cm2 density 1.13 mm3/kgm abrasion resistance, and resistance to 150,000 cycles flexing respectively. The reclaimed rubber with 5% used-lube oil has characteristics 38.77% rubber hydrocarbon, 26.46% carbon black, 25.98% acetone extract, and 6,55% ash contents respectively.
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