The reinforced filling system of rubber is essentially a filler, and the filler is divided into a reinforcing filler and an inert filler. Reinforcing fillers can improve the abrasion resistance, tear resistance, tensile strength, core strength, swelling resistance and other properties of rubbers. They are also called reinforcing agents; inert fillers are called compatibilizers, just to save Raw rubber is added to reduce the cost and improve the processing technology without significantly affecting the behavior of rubber products. It is also called filler.

Reinforcing agent is also a reinforcing filler, which has a reinforcing effect. The more active the reinforcing filler, the better the reinforcing effect. It can significantly improve the mechanical properties and anti-aging properties of rubber products, including abrasion resistance and tear resistance. Strength, tensile strength and other indicators. Common reinforcing agents include fine particle carbon black, white carbon black, and silicate.

Filler is a substance that can increase the volume of rubber products and reduce production costs. It can also improve rubber processing technology compared with reinforcing agents, but it has little effect on various physical properties of rubber products. The main purpose is to reduce the cost of rubber. Common fillers in rubber products are clay, light calcium, talc, and silicon-aluminum carbon black.