Differences in Chemical Composition: Granular and powdered rubber accelerators have essentially the same chemical composition, consisting of various organic compounds, including vulcanizing agents, activators, vulcanization accelerators, and antioxidants. However, granular rubber accelerators typically contain auxiliary components such as binders and lubricants to achieve better molding and processing results.
Differences in Physical Morphology: Compared to powdered rubber accelerators, granular rubber accelerators have larger particle sizes, higher densities, and smaller surface areas. Due to the stronger bonding between particles, granular rubber accelerators offer better flowability and uniformity, making them suitable for automated feeding and batching systems in large-scale production processes. Powdered rubber accelerators require powdering to achieve good flowability and uniformity, leading to certain cost and production process limitations.
Differences in Applications: Due to their better flowability and uniformity, granular rubber accelerators are commonly used in automated feeding and batching systems in large-scale production. In some specialized processes, such as injection molding and extrusion, granular rubber accelerators can achieve superior processing results and are easier to mix with other raw materials. Powdered rubber accelerators are easier to use in small-batch production and trials because they can be metered and mixed more precisely.
