Hexamethylenetetramine (HMTA) is the most commonly used catalytic curing agent for thermoplastic phenolic resins, and is widely used in the field of abrasive grinding. However, the cured resin exhibits greater brittleness due to the methylene linkage between the aromatic nuclei in structure. In this study, the sulfonamide derivatives(PTSA) was used to replace the hexamethylenetetramine for the curing of phenolic resin. The phenolic resin cured by PTSA and HMTA was characterized and analyzed by TGA, mechanical properties and impact test. The results show that the weight loss temperature of PTSA cured phenolic resin at 10% weight loss is 396 ℃, which is 24 ℃ higher than that of HMTA cured phenolic resin, and the heat resistance is excellent. The grinding ratio of super-hard abrasives made by using PTSA cured resin as binder is 36.18% higher than that of HMTA cured resin as binder.