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|Title:||Comparison of nano CaCO<sub>3 </sub>and flyash filled with styrene butadiene rubber on mechanical and thermal properties|
Shimpi, N G
|Abstract:||Different particle sizes (21, 15, 9 nm) of CaCO<sub>3 </sub>were synthesized by <i style="">in-situ</i> deposition technique and confirmed by X-ray diffraction method. The nano CaCO<sub>3</sub> was added from 0.1 wt % to 0.5 wt % in the styrene butadiene rubber (SBR). Rubber nanocomposties were compounded on two-roll mill and molded in compression molding machine. Mechanical properties such as tensile strength, elongation at break, modulus at 300 % elongation, hardness, specific gravity, swelling index, flame retardency and abrasion resistance were studied. These results were compared with flyash filled SBR. There was an improvement in properties of rubber nanocomposites because of uniform dispersion of nano CaCO<sub>3 </sub>particles in the matrix that intercalates the rubber chains. Hence degree of crosslinking increases multifold in comparison to commercial CaCO<sub>3</sub> and flyash.|
|ISSN:||0975-1084 (Online); 0022-4456 (Print)|
|Appears in Collections:||JSIR Vol.64(10) [October 2005]|
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