The specific role of white corundum as a filler for rubber rollers
As a filler for rubber rollers, white corundum mainly improves the comprehensive performance of rubber rollers through its unique physical and chemical properties. The specific roles are as follows:
1. Enhance wear resistance and extend service life
White corundum has extremely high hardness (Mohs hardness level 9), which can significantly improve the wear resistance of the rubber roller surface and reduce the loss caused by friction. It is especially suitable for industrial scenes with high load operation (such as printing and textile machinery) to extend the replacement cycle of rubber rollers.
2. Improve surface properties and processing quality
Improve surface finish: As a fine filler (such as 1000-4000 mesh), white corundum can make the surface of the rubber roller more uniform and delicate, reduce defects during coating or printing, and ensure product texture.
Optimize anti-adhesion: Its chemical stability (acid and alkali corrosion resistance) can reduce the adhesion of residues on the surface of the rubber roller, making it easy to clean and maintain.
3. Improve hardness and compressive strength
White corundum particles can enhance the overall hardness and compressive strength of the rubber roller matrix, avoid deformation in high-pressure working environments (such as calender rollers and coating rollers), and ensure the stability of processing accuracy.
4. Improve high temperature resistance and anti-aging performance
White corundum has excellent thermal stability (high temperature resistance up to 2000℃), which can reduce the softening or aging of rubber rollers in high temperature environments and maintain long-term performance stability.
5. Particle size uniformity ensures production stability
The finely graded white corundum filler (such as 1000 mesh) has uniform particle distribution, which can avoid internal stress concentration of rubber rollers, reduce the risk of cracking, and ensure the consistency of batch production.
Note: In actual applications, it is necessary to select the appropriate mesh size according to the working conditions of the rubber roller (such as 1200 mesh for high-precision scenes), and control the addition ratio to balance hardness and elasticity.