白炭黑表面改性研究现状及进展

Research Status and Development of Precipitated Silica Surface Modification

白炭黑是橡胶工业中非常重要的补强剂,目前市场上主要是采用沉淀法进行生产。但沉淀法生产的白炭黑直接应用时效果较差,在工业应用前大多需要进行改性处理。通过分析国内外白炭黑改性技术研究现状,归纳总结出了表面接枝改性、偶联剂改性、离子液改性、大分子界面改性及并用改性5种白炭黑改性技术的特点,其中偶联剂改性为目前工业应用上的主要改性工艺,而其他改性工艺由于生产成本、改性效果、产品稳定性等因素暂未实现大规模工业应用。

Silica was a very important reinforcing agent in rubber industry and it was produced by precipitation method principally at present.Because of the direct application effect was unsatisfactory,the precipitated silica needed modification treatment before industrial application.By analyzing the domestic and international research status of the precipitated silica modification,the features of surface grafting modification,coupling agent modification,ionic liquid modification,macromolecule interfacial modification and blend modification were summarized.In these modification technologies,the coupling agent modification was the most widely used at this stage,while other modification technologies had yet to achieve large-scale industrial applications because of production cost,modification effect,product stability and so on.