Preparation method of gelated plant powder porous filter stick

The invention relates to a gelated plant powder porous filter stick and a preparation method thereof. The preparation method comprises the steps of preparation of mixed sol, gelation of the mixed sol, pre-freezing, vacuum drying and the like. The gelated plant powder porous filter stick has the characteristics of good permeability, high porosity, low density and low heat conductivity coefficient, can effectively reduce harmful substances in cigarette smoke, and has remarkable tar and harm reducing effects. 本发明涉及一种凝胶化植物粉末多孔滤棒及其制备方法，该制备方法包括混合溶胶的制备、混合溶胶凝胶化、预冷冻与真空干燥等步骤。本发明凝胶化植物粉末多孔滤棒有良好的通透性，高孔隙率、低密度和低导热系数的特点，它能够有效地降低卷烟烟气中的有害物质，具有显著降焦减害效果。