News

Asbestos sealing material has higher mechanical strength than non-asbestos sealing material.

(1) The surface of the asbestos fiber is attached with multivalent metal cations, which easily forms a strong interface with the negatively charged rubber on the surface, which improves the bonding strength of the rubber fiber, that is, the mechanical strength of the asbestos sealing material. The non-asbestos mineral fibers currently used are not as good as asbestos in direct affinity with the rubber matrix, so the bonding strength of rubber fibers is not as good as asbestos.

 (2) Asbestos fibers can be subdivided almost indefinitely, and the specific surface area is larger than that of non-asbestos mineral fibers, so the reinforcement effect is obvious.

 (3) The tensile strength of asbestos fiber is higher than that of non-asbestos fiber, so the reinforcing effect of asbestos fiber is obvious.