Basic Characteristics and Core Functions of Two-Component Silicone Sealant

Two-component silicone sealant is a mixture of component A (base adhesive) and component B (curing agent) that cures after mixing. Its core functions can be summarized as follows:

1. High-Strength Bonding: Bond strengths to materials such as glass, metal, and concrete can reach 1.5-2.5 MPa (according to GB/T 14683-2017), far exceeding the 0.8-1.2 MPa of single-component products, making it particularly suitable for structural bonding.

2. Stability in Extreme Environments: With a temperature range of -60℃ to 200℃ and a service life exceeding 20 years under UV exposure (ASTM C794 test data), it is suitable for applications such as outdoor curtain walls and bridge expansion joints.

3. Dynamic Displacement Compensation: With an elastic recovery rate of >=90% (ISO 9047 standard), it can withstand ±50% joint displacement, addressing cracking caused by thermal expansion and contraction in buildings.

4. Chemical inertness protection: Resistant to acid, alkali and salt spray corrosion, commonly used for pipeline sealing in chemical plants or protection of marine equipment.