The popular science knowledge：
Natural rubber has excellent comprehensive physical and mechanical properties, natural rubber has good elasticity at room temperature, this is because the molecular chain of natural rubber is amorphous at room temperature, molecular chain flexibility is good. Thermal aging natural rubber is high elastic body at room temperature, vitrification temperature is -72 degrees, slowly softened after heating, began to flow at 130-140 degrees, about 200 degrees began to decompose, 270 degrees violent decomposition.
Good processing performance, natural rubber due to high relative molecular weight, wide distribution of molecular weight, molecular chain is easy to break, coupled with a certain number of gel molecules in the raw rubber, so it is easy to plasticizing, mixing, calendering, pressing, molding and so on.
Post time: Apr-01-2022