Anti-Tacking Properties of Zinc Stearate Emulsion for CMB Rubber Sheet Prepared by Heat Treatment Process
Jin-Bae Lee, Pei Qin, KiRyong Ha and WonSool Ahn
Department of Chemical Engineering, Keimyung University, Daegu, Korea
Abstract: CMB (carbon master batch) or FMB (final master batch) rubber sheet, which is compounded and stacked as sheets during the rubber manufacturing process, may become indivisible due to adhesion between sheets over time. Therefore, in the actual rubber process, various organic/inorganic solid powders or liquid surfactants as anti-tacking agent are applied to the surface of the rubber sheet to solve these problems. In the present study, we prepared an emulsion using TEA-oleate (triethanolamine oleate) as the emulsifier of the zinc stearate powder, and examined its properties necessary to be used as the anti-tacking agent. In the sample preparing process of the emulsion, a heat treatment process was introduced to further refine the zinc stearate powder. Changes in the emulsion stability, adhesion characteristics and heat treatment effects on the prepared samples were analyzed through DSC (differential scanning calorimetry), UTM (universal testing machine), and TGA (thermogravimetric analysis).
Keywords: Rubber, CMB, Anti-tacking, Peel Strength, Zinc Stearate, Heat Treatment.