Do You Konw The Diffrences between PU Water Swelling Sealant And General PU Sealant ?

The difference between water expansion sealing glue and single-component polyurethane sealant is mainly in the following aspects: 

1. Principle: Water expansion sealing glue is a water sealing material that can expand and block water flow in water, and its main components are

polymer materials and water-absorbing materials. The single-component polyurethane sealant is a sealing material that is dried and cured in the air, and its main component is polyurethane resin.

2. Construction environment: water expansion sealing adhesive is suitable for underwater construction, while single-component polyurethane sealant is suitable for sealing and bonding in various indoor and outdoor environments. 

3. Characteristics: water expansion sealing glue can expand and block water flow in water, and has good water resistance and durability, but its adhesion in dry environment is poor. Single-component polyurethane sealant has good adhesion and durability, but it does not have the characteristics of water expansion.