目的 以二氧化硅为核、聚甲基丙烯酸甲酯为刷制备球形高分子刷，考察其作为包装纸防潮涂料主要成膜物质的性能。方法 采用“从表面接枝”技术，通过引发剂引发单体聚合生成甲基丙烯酸甲酯球形刷，利用FTIR和TEM对球形高分子刷的结构及形态进行表征，并考察其作为涂料成膜物质的应用性能。结果 合成的球形高分子刷具有良好的耐水性能，且在固含量达到40%以上时仍具有较低的粘度（64 mPa·s）。结论 该球形高分子刷具有高固低粘包装纸防潮涂料的应用价值。

The work aims to prepare the spherical polymer brushes with silicon dioxide as the core and polymethyl methacrylate as the brush, so as to investigate the properties of spherical polymer brushes when taken as the moisture-proof coating's main film-forming material of the packaging paper. With the technology of "grafting from the surface", the methyl methacrylate spherical brush was generated by initiating the monomer polymerization through the initiator. The structure and morphology of spherical polymer brush were characterized by FTIR and TEM, and the application performance of the spherical polymer brushes treated as the coating film-forming material was investigated. The synthetic spherical polymer brush had good water resistance and still had a low viscosity (64 mPa·s) at a solid content of over 40%. The spherical polymer brush has the application value in moisture-proof coating of packaging paper with high solid content and low viscosity.