As its name implies, building sealant is a glue used in the construction industry to seal water. It is also called water swelling sealant, building water sealing paste, building water sealing glue and building sealing paste.
Building sealant is divided into single component and two-component building sealant. The water swelling sealant is a single component water sealing sealant, and the two-component building sealant is divided into polyurethane Building sealant and polysulfide building sealant.
Characteristics and application of water swelling sealant
Water swelling sealant is a single liquid type water swelling, moisture curing and elastic sealing sealant. It is also called water swelling sealant because of its good sealing and water stopping effect. Once hardened, the water swelling sealant will become a rubber elastomer with good resilience. After being immersed in water, its volume will expand and fill the gap to achieve sealing and water sealing effects. As a waterstop material around waterways for civil and construction projects, it can play an excellent role and has a wide range of uses.
Water swelling sealant package:
- Net content: 600ml/piece;
- Packing: 20 pieces/box in cardboard box.
Three bags of water swelling sealing adhesive
Synthetic components and application range of two-component polyurethane building sealant
The two-component polyurethane building sealant is a two-component reactive curing type, consisting of A and B. Component A is milky white or light color viscous polyurethane prepolymer, and component B is curing agent And auxiliary The black paste or liquid, which is mixed and dehydrated, has certain elasticity and cohesiveness after curing (component A: component B=10:0.8~1.2). This kind of sealant has high tensile strength, excellent elasticity, abrasion resistance, oil resistance and cold resistance, but its water resistance, especially alkali water resistance, is poor.
The two-component polyurethane building sealant is widely used in the connection and Construction joint Filling seal of. High road, bridge, airstrip, underground The Conduit . Connection sealing at joints and sealing of expansion joints and deformation joints of tunnels and buildings.
One barrel of group A and one barrel of group B two-component polyurethane sealant
Composition and application of polysulfide building sealant
Polysulfide building sealant is a sealant made of liquid polysulfide rubber as the main material, together with tackifying resin, vulcanizing agent, accelerator, reinforcing agent, etc. This product is a two-component paste, with obvious color difference between the two components, which is easy to mix evenly. The use ratio is A: B=100:8-12, which has good adhesion to metal, concrete and other materials. It can maintain good air tightness and water resistance under continuous expansion, vibration and temperature changes, and has good oil resistance, solvent resistance and durability.
The two-component polysulfide sealant is a complete and domestic waterproof material. In developed countries, polysulfide building sealant is used to seal the wall joints of middle and high rise buildings. Polysulfide waterproof sealant is suitable for long-term immersion building joint sealing, and has good bonding performance with the concrete. Two component polysulfide waterproof sealant has been used in some large reservoirs, reservoirs, sewage pools and underground projects in China.
