A carbon-coated white carbon black

Abstract

The invention relates to a carbon-coated white carbon black. The carbon-coated white carbon black is prepared through the following steps: modifying the white carbon black by using starch, oligosaccharide, glycerinum and polyethylene glycol as raw materials, evenly coating silicon dioxide with a carbon layer, and carbonizing at a high temperature in an insert gas or anaerobic atmosphere to obtain a core-shell structure nano-powder with silicon dioxide as a core and carbon as a shell. Compared with the traditional white carbon black, the carbon-coated white carbon black is covered with a unique carbon coating layer so that the white carbon black has electric conductivity, the structural property of the white carbon black is improved and the compatibility of the white carbon black with rubber is improved, and when the carbon-coated white carbon black is applied to a tire, the tire has the characteristics of improved slippery resistance, low generation of heat by friction and the like. The new material carbon-coated white carbon black has the advantages of simple preparation process and use of simple and easily available raw materials; the prepared carbon-coated white carbon black has excellent properties, meets various performance indexes of the white carbon black for rubber, and thus has good economic benefit.

Description

Technical field

[0001] The invention relates to a carbon-coated white carbon black. Specifically, it relates to a method for preparing a novel core-shell structured nano-silica. The method of the invention is simple and efficient, and meets the requirements of energy saving and environmental protection. Background technique

[0002] White carbon black is precipitated silica, also known as hydrated silica, and its molecular formula is SiO 2 ·NH 2 O, has a special surface structure (with surface hydroxyl and adsorbed water), special particle shape (small particles, large specific surface area, etc.) and unique physical and chemical properties. Therefore, white carbon black has an important inorganic silicon compound with excellent properties such as porosity, high dispersibility, light weight, good chemical stability, high temperature resistance, non-combustibility, and good electrical insulation. Such characteristics make white carbon black widely used in rubber, plastics, coati...

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