The expansion rate of water swellable water?
We all know that the product type of expansive water water is a water, waterproof material of self expansion. But when it comes to its water after why self expansion, you may have no answer. Today we explain in detail, seal water after why expansion. First we analyze the main component of it.
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.