000			01886nam a2200181Ia 4500
008			220216s9999 xx 000 0 und d
100			_aSasidharan K
245		0	_aHaf/Silica/nanoclay ternary masterbatch abd haf/silica binary masterbatch from fresh natural rubber latex
260			_bRubber Chemistry and Technology _c2014
300			_a250-263
520			_aA process for production of carbon black/silica/nanoclay ternary filler masterbatch from fresh natural rubber (NR) latex was standardized. The fillers, nanoclay, carbon black, and silica were incorporated in fresh latex by a modified coagulation process. The latex, mixed with filler dispersions, coagulated immadiately on addition of acids. The coagulam containing fillers was dried at 70 degree C in an air oven to get the latex filler masterbatch, which was further processed in the conventional way. The masterbatch compounds containing only silica/carbon black showed a higher level of vulcanization compared with the corresponding dry mixes. The mechanical properties, such as tensile strength, modulus, tear strength, abrasion resistance and hardness increased with the proportion of nanoclay in the mixes up to 5 phr, and with a greater amount, the change was only marginal. Lower tan delta values were observed for all of the masterbatches containing nanoclay in the ranges of 3 to 10 phr compared with the control dry mix containing 25/25 carbon black/silica. The improvement in mechanical properties and dynamic properties shown by the masterbatches over the conventional mill-mixed compounds was attributed to factors related to filler dispersion, as evidenced from the data from dispersion analyzer images, X-ray diffractograms, and a higher level of vulcanization.
650			_aHaf/silica/nanoclay
650			_aNR latex
700			_aAlex R
700			_aKurian T
856			_uAbst only
942			_cJS
999			_c60211 _d60211