Understanding the Basic Concepts of Architectural Joint Sealants

Construction Joint Sealant is a paste material used for filling and sealing joints in building structures. It is composed of base glue, fillers, curing agents, and other components. Its main function is to cure into an elastic rubber material after use, adhering to the building substrate and providing sealing, waterproofing, and leakage prevention. Compared with other building adhesives, Construction Joint Sealant has significant differences in form and application, with its primary function being the filling and sealing of joints.

Different Types of Construction Joint Sealant

Construction Joint Sealant can be divided into two categories based on its function and application scenarios: structural building sealants and non-structural sealants. Structural building sealants, abbreviated as structural sealants, are used for structural bonding and sealing of building panels during the production of curtain wall units. Non-structural sealants are mainly used for the filling and sealing of joints, with relatively lower strength requirements but needing to have a certain level of elasticity and displacement capability to accommodate the thermal expansion and contraction of the substrate.

Classification and Curing Performance of Construction Joint Sealant

Construction Joint Sealant can be classified based on its chemical composition, with common types being polysulfide, polyurethane, and silicone. Additionally, it can be divided into single-component and dual-component packaging based on the packaging method. Single-component packaging refers to mixing all raw materials together and extruding them directly from the container during use. Dual-component packaging requires mixing the A and B components in a specific ratio before use, with curing achieved through a chemical reaction.

Construction Precautions

During the construction process, several key aspects need to be controlled. First is the cleanliness of the substrate surface, ensuring it is clean and free of moisture, dust, or other contaminants. Secondly, the size of the nozzle should be well controlled during the application to ensure that the sealant can fully fill the joint, leaving no gaps. Additionally, the environmental temperature and humidity should be within a suitable range during application to avoid excessive dryness or humidity that could affect the curing of the sealant.

Construction Joint Sealant plays an important role in the construction industry, providing reliable sealing and waterproofing for building structures. Choosing the right sealant and proper construction can help to enhance the quality and durability of building structures.

Comens New Materials Co., Ltd., as one of the leading construction adhesive suppliers in China's high-performance composite polyurethane adhesives industry, is committed to providing customers with high-quality Construction Joint Sealant products. We have advanced production technology and a strict quality control system to ensure the stability and reliability of our products. Whether in the field of structural building sealants or non-structural sealants, Comens is a trustworthy partner.