Cane trash-based composite filler, preparation method thereof and paper comprising composite filler

The invention discloses a cane trash-based composite filler. The cane trash-based composite filler is a compound with a core-shell structure, wherein cane trash powder granules are used as cores of the compound with the core-shell structure, a covering film grafted with cane trash powder particles and containing acrylamide copolymer is used as a shell layer of the compound with the core-shell structure, the cane trash powder particles are particles obtained by grinding cane trash into 30-200 meshes, and the covering film containing acrylamide copolymer is formed by copolymerizing monomers (a), (b) and (c). 本发明公开了种蔗渣基复合填料，所述蔗渣基复合填料是种具有核-壳结构的化合物，其中以蔗渣粉体颗粒作为该核-壳结构化合物的核，与蔗渣粉体颗粒接枝并含有丙烯酰胺系共聚物的包覆膜作为该核-壳结构化合物的壳层，所述蔗渣粉体颗粒为将蔗渣粉碎到30～200目后的颗粒，所述含有丙烯酰胺系共聚物的包覆膜壳层是通过单体(a)、(b)、(c)共聚合而成。