MODIFIED CARBON BLACK AND PREPARATION METHOD THEREFOR

摘要

The present invention provides a modified carbon black, with an unsaturated coupling agent being grafted on the surface thereof. An unsaturated double bond on one end of the coupling agent is grafted on the surface of the carbon black to serves as a grafting group; and an active group on the other end serves as a crosslink group to retain a crosslinking function with rubber in the future. At least one coupling agent is selected from sulfur-containing compound, halogen-containing compound, nitrogen-containing compound, polyunsaturated compound. The present invention also provides an energy ball milling preparation method for the described product, and provides the formulas and preparation method of two kinds of sulfur-containing unsaturated coupling agent i.e., thioether and thiuram compounds for the described product. The modified carbon black could be crosslinked together with tire rubber. If the carbon black does not move, the rubber also does not move, thereby improving wet grip and driving safety. If the rubber moves, the carbon black also move, thereby reducing internal friction and saving oil, and reducing heat generated from the tire and prolonging the service life of the tire.

主权项

1. A modified carbon black, characterized in that its surface is grafted with an unsaturated coupling agent, one end of which is an unsaturated double bond served as a graft radical for the carbon black and the other end of which is an active radical served as a crosslink radical, retaining the function of crosslink with rubber in the future, wherein at least one unsaturated coupling agent is selected from sulfur-containing compounds having crosslink radical, halogen-containing compounds having crosslink radical, nitrogen-containing compounds having crosslink radical, or polyunsaturated compounds having crosslink radical, the said unsaturated coupling agent grafted onto the carbon black accounts for 0.2% to 20% of the total weight of the modified carbon black; such modified carbon black may be prepared using an energy ball milling method, whereby the carbon black surface is activated by energy and thence grafted with said unsaturated coupling agent.