Based on article published in the November/December issue of European Rubber Journal magazine.
The dynamic nature of the rubber fillers market is highlighted by new entrant Hiller Carbon, a third-generation, family-run supplier of speciality carbon products with its roots in the coal-mining industry of eastern Kentucky.
While the main application for its speciality carbons is in electric furnace steel mills, its Crown Black extending filler for rubber compounds have become a significant part of Hiller’s plans to diversify into new markets.
The main selling point of the 325 mesh product is low density, explains Jordan Hiller, sales manager, industrial carbons at Hiller Carbon. It has, he said, a specific gravity of 1.3, compared to 1.8 for most carbon black grades.
“This can equate to a saving of 20-30 percent versus using standard blacks,” said Hiller, pointing to company information showing estimated savings for EPDM compounds of around 25 percent and in SBR formulations of around 10 percent.