الفهرس 
Aim of the WorkOnly 14 pages are availabe for public view
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Abstract
Recycling of worn tires currently configurates a highly important concern due to the huge compile amounts and the negative impacts on environment.
Reclaimed rubber powder (RRP) was treated by the addition of glycidyl methacrylate (GMA) to impart desired properties suitable for various applications, such as oil resistance. The produced GMA-RRP was mixed with nitrile-butadiene rubber (NBR) or ethylene propylene diene monomer (EPDM) in various compositions. The blends were irradiated with gamma radiation doses of 50 to 250 kGy. The compounding of the blend-factors has been elaborated on utilizing FTIR and scanning electron microscopy (SEM). Different properties of the synthesized unirradiated and irradiated blends such as, tensile strength, elongation at break, hardness, oil uptake behavior in motor and brake oils, and thermal stability were investigated with respect to the RRP content. Results showed that tensile strength, hardness and oil uptake increase with increasing NBR or EPDM content in the blend. It has been shown that Ts increased with dose. Similarly, hardness values, reported for the same composition, apparently increased with dose within the range 50- 250 kGy. The residual mass % of blends obviously increased upon the incorporation of incremental RRP. The swelling percentage steadily decreased with increasing radiation dose due to the radiation - induced crosslinking.
The reinforcement material (kaolin powder, 5–20 wt %) was added to the blend (50/50/2) wt%. Tensile, elongation and hardness parameters of the blends were investigated with various feed ratios of kaolin at variable gamma radiation dose. The thermal stability of a variety of composites was determined using thermogravimetric analysis (TGA). The morphological studies by SEM revealed that incorporation of kaolin up to 15 wt% resulted in an improvement of properties of the developed NBR or EPDM/RRP/GMA/kaolin. The results emphasize significant improvement under conditions of enforcement and irradiation conforming a novel composite engineering material