What are the methods to improve the wear resistance of abrasive resin block?
Publish Time: 2025-04-21
Modification of raw materials of abrasive resin block is one of the key ways. In terms of chemical modification, cashew nut shell oil-modified phenolic resin can improve its flexibility and friction performance, but the improvement in heat resistance is not obvious; cashew nut shell oil-melamine-modified phenolic resin has both toughening and heat resistance effects, but there are problems with insufficient in thermal decomposition temperature and stability of raw material components. In addition, the introduction of boron element for boron modification can significantly improve the heat resistance of phenolic resin. The principle is that the B-O bond energy is much greater than the C-C bond energy, which significantly increases the thermal decomposition temperature of the resin, and it is easy to form a honeycomb structure of boron carbide insulation layer at high temperature, which prevents heat from diffusing into the material and further improves thermal stability.Filling and reinforcement of abrasive resin block is also extremely important. Adding inorganic fillers such as calcium carbonate and clay can improve the toughness of phenolic resin while maintaining heat resistance, thereby enhancing wear resistance. The use of reinforcing materials such as glass fiber, glass cloth and asbestos can improve the brittleness of phenolic resin, so that the resin block can withstand greater external forces during the grinding process without being easily damaged.The process optimization of abrasive resin block has a significant effect on improving wear resistance. During the curing process of phenolic resin, strict control of molding conditions or post-curing conditions, such as appropriate temperature, pressure and time, can fully cure the resin to form a denser structure and improve its wear resistance. The use of thermoplastic phenolic resin methylenetetramine curing system and careful design of the structure of the modifier and phenolic resin curing material can also improve the toughness and heat resistance of phenolic resin at the same time, thereby enhancing the wear resistance of the resin block.Structural design should not be ignored either. Reasonable design of the structure of abrasive resin block, such as increasing its contact area with the grinding material and optimizing the heat dissipation channel, can improve grinding efficiency and heat dissipation effect, and reduce the wear of the resin block caused by local overheating.Surface treatment is also an effective means to improve wear resistance. Coating the surface of the abrasive resin block, such as applying a wear-resistant coating, can form a protective film on the surface of the resin block, reduce direct wear during grinding, and extend the service life of the resin block. In addition, polishing the surface of the resin block to reduce surface roughness can also reduce friction resistance during grinding and improve wear resistance.
