Effect of Sealant special carbon black particle size on sealant performance
Publish Time: 2024-06-03
In the production of sealants, carbon black is an important additive, and its particle size has a significant effect on the performance of sealants. The particle size of Sealant special carbon black is usually between 5-40 nanometers, and the selection of this range has been verified by many experiments and practical applications.
First, the size of carbon black particles directly affects the dispersibility of carbon black in sealants. Carbon black with smaller particle size is easier to disperse evenly in sealants, avoiding the occurrence of agglomeration, thereby improving the uniformity and consistency of sealants. This evenly dispersed carbon black can better play its reinforcing role and improve the strength and hardness of sealants.
Secondly, the size of carbon black particles also affects the cross-linking density of sealants. Smaller carbon black particles can be more evenly dispersed in sealants, forming more cross-linking points, thereby increasing the cross-linking density of sealants. This increased cross-linking density helps to improve the wear resistance and aging resistance of sealants and extend their service life.
In addition, the size of carbon black particles also affects the elastic modulus of sealants. Smaller carbon black particles can increase the elastic modulus of the sealant, making it more elastic and resilient. This is especially important for sealant products that require good sealing and impact resistance.
In summary, the particle size of Sealant special carbon black has many effects on the performance of the sealant. When choosing Sealant special carbon black, the appropriate particle size should be determined according to the specific application requirements and production process to give full play to the reinforcing effect of carbon black and improve the performance of the sealant.
