造纸填料级碳酸钙的酸稳定改性

Acid-Stabilization Modification of Calcium Carbonate Filler

未经改性处理的碳酸钙用作造纸填料时,对纸料体系的pH值具有较强的依赖性,往往不适用于酸性、弱酸性及近中性抄纸体系,其应用范围具有一定的局限性。碳酸钙的酸稳定改性可进一步拓展其应用领域,具有十分重要的意义。文章阐述了目前国际上出现的造纸填料级碳酸钙的主要酸稳定改性技术和适用场合,指出了相关研究及应用的重要意义。

As an important category of inorganic materials, calcium carbonate has been extensively applied in many industries. The application of calcium carbonate as the filler in papermaking is strongly dependent upon the pH value of the furnish system. It is not suitable for use in acidic, slightly acidic systems and pseudo neutral papermaking process. Therefore, acid-stabilization modification of calcium carbonate filler is of great significance for extending its application fields and improvement of performance. In this paper, the principal emerging acid-stabilization modification techniques of calcium carbonate filler were briefly reviewed, and the importance of relevant studies and application was discussed.