目的 将实验室自制的白色松香胶作为纸内施胶剂应用在造纸行业。方法 采用皂化反应法和高速搅拌机搅拌均质的方法制备白色松香胶料，考察该施胶剂对废纸脱墨浆的施胶效果。结果 白色松香施胶剂的加入能够提高纸页的抗水性能，纸页的吸水量从未施胶脱墨浆的283.33 g/m2降低到34.17 g/m2。与未施胶废纸脱墨浆相比，白色松香胶施胶后纸页的抗张指数和撕裂指数分别提高了18.8%和2.4%。纸页强度性能也有所提高。结论 实验室自制白色松香胶的加入能提高废纸脱墨浆所抄纸的抗水性能，也能起到增强纸页强度的作用。

The work aims to apply in the papermaking industry the white rosin size prepared in the laboratory as paper sizing agent. White rosin size was prepared in the saponification reaction method and the method used for even stirring with high-speed mixer. The sizing effect of the sizing agent on the waste paper deinked pulp was examined. The results showed that the added white rosin size could improve the water resistance of the paper sheets and the quantity of absorbed water of the sheet was decreased from 283.33 g/m2 (for unsized deinked pulp) to 34.17 g/m2. Compared with unsized waste paper deinked pulp, tensile index and tear index of sheets applied with white rosin size had increased by 18.8% and 2.4% respectively. In addition, the strength performance of the sheets had also been improved. The addition of white rosin size self-made in laboratory can improve the water resistance of paper sheets made from waste paper deinked pulp and play the role in enhancing the strength of the sheets.