Organic silicon compounds are widely used in the construction industry due to their unique physical and chemical properties. Among them, silicone adhesive, as an important building material, has become a common material in construction due to its excellent elasticity, weather resistance and bonding properties.

Silicone glue production process:

107 silicone rubber, silicone oil, white oil, nano calcium carbonate, white carbon black, etc. are put into the 5000L base material machine in batches according to proportion, stirred, dispersed and mixed, and then the material is the silicone glue base material, which is then ground by a three-roll grinder or a twin-screw mixer, and then the base material color paste additives are put into the 1100L glue making machine or static mixer in batches according to proportion, and then the material is discharged, which is the finished glue, and finally enters the packaging machine for packaging.

Classification of silicone sealants according to the number of components

According to the number of components of the product, silicone sealants for construction can generally be divided into two categories: single-component and two-component.

Single-component silicone sealants for construction are generally cured by reacting with moisture in the air. The curing process gradually proceeds from the surface to the deep layer. Therefore, its deep curing speed is relatively slow, and it has certain requirements for construction depth, width, ambient temperature, ambient humidity, etc., and is greatly affected by ambient humidity. Under normal circumstances, it takes 5-7 days to have a certain strength. If the best effect is to be achieved, it takes 7-21 days. Single-component is generally suitable for construction sites because of its ease of use.

Two-component silicone sealants for construction have two components, A and B. When used, the two components need to be mixed evenly first, and then the glue is injected into the glue-using part within a certain period of time. If the mixture exceeds a certain time, the sealant will solidify and cannot be used. Two-component generally takes 2-s days to reach strength. Two-component glue is generally suitable for insulating glass sealing in door and window factories because of its fast curing speed and deep curing.

Application of silicone adhesive in the construction industry

1. Building sealing

Silicone adhesive is widely used for sealing windows, door frames, curtain walls and other parts of buildings. It can effectively prevent the penetration of moisture and air, and reduce structural damage caused by moisture intrusion. In addition, the elasticity of silicone adhesive enables it to adapt to the thermal deformation of building materials, ensuring a long-lasting sealing effect.

2. Waterproofing projects

In humid environments such as bathrooms and kitchens, silicone adhesive is widely used in waterproofing construction. Its excellent waterproof performance can effectively avoid water leakage and moisture problems, and protect the overall structure and interior decoration of the building.

3. Adhesive materials

Silicone adhesive can be used not only as a sealant, but also as an adhesive, and is widely used in the bonding of various building materials, such as glass, metal, ceramics, etc. Its good bonding performance makes the combination between different materials more solid and improves the overall performance of the building.

4. Exterior wall coatings

Silicone adhesive can also be used as one of the components of exterior wall coatings to enhance the weather resistance and adhesion of the coatings, and improve the durability and aesthetics of the exterior walls of buildings.

How to choose the right silicone sealant

The price positioning of silicone sealants for construction is mainly determined by their use, and can be basically divided into structural sealants, weather-resistant sealants and neutral sealants. The prices are basically arranged in this order. Structural sealants generally have high requirements for strength and toughness; weather-resistant sealants have high requirements for high and low temperature resistance, UV resistance, corrosion resistance, and other properties; while neutral sealants are mainly based on gloss, elasticity and other requirements.

In general, silicone sealants, as an important application of organic silicon compounds, play an irreplaceable role in the construction industry. Despite some challenges, with the advancement of technology and changes in market demand, silicone sealants have broad future development prospects. Through continuous innovation and improvement, silicone sealants will continue to play their important role in the construction industry and provide guarantees for the safety, durability and beauty of buildings.