The standard definition of rubber products

The pores of this kind of porous material should be throughout the whole material. According to the different structure of the pores, it can be divided into closed pores (the pores are not connected to each other), and open pores (the pores are not completely separated from each other by the pore wall). , with a certain degree of associativity) and mixed pores (both open-pore and closed-pore structures). Accordingly, microporous rubber mainly includes two types of expanded rubber and sponge rubber. Due to different usage habits, the meaning of "sponge rubber" in domestic scientific literature does not distinguish the opening and closing mechanisms of cells.