Raw material of rubber sealing strip:
product type water swelling seal is made of rubber as the substrate, and adding sodium bentonite, super absorbent resin, plasticizer, tackifier resin, antioxidant fillers such as mixing, extrusion and seal. The expansion rate is decided by the sodium bentonite has a swelling function for sodium bentonite. That is to say, the product of expansive water ingredients sodium bentonite water components determine the expansion rate in water.
With the expansion of bentonite, bentonite is a kind of natural montmorillonite as the main component of the clay, which belongs to a hydrous aluminum silicate clay mineral with a small amount of alkali and alkaline earth metals. Because it is not a pure substance has no chemical composition and chemical fixation. The main component of Bentonite for the three and two aluminum oxide and silicon dioxide containing a small amount of magnesium, calcium, potassium, sodium, iron and so on. Because of different components of different colors for the proportion of 2.6.