Structural sealants, with their excellent anti-aging, anti-fatigue, and anti-corrosion properties, as well as high-strength bonding ability, are widely used in the construction of structural components that need to withstand high loads. Their characteristics lie in their excellent load-bearing capacity and long service life.
Weather-resistant sealants, also known as all-weather sealants, possess excellent weather resistance, including anti-aging, anti-oxidation, and excellent toughness. This type of sealant maintains its stability in various environments and is often used in sealing, waterproofing, and UV protection applications.
1. Functional Differences: Structural sealants play a load-bearing role in structural components, transmitting the external and internal forces borne by the bonded materials. They are an ideal choice for bonding components such as glass, window frames, and stone.
In contrast, weather-resistant sealants do not directly bear loads; their core function is sealing. They are often used for sealing between components to ensure waterproofing. It is worth noting that although weather-resistant sealants have a certain degree of adhesion and can withstand a certain load, their original design purpose is not to transmit loads.
2. Price Difference: Structural adhesives are generally more expensive than equivalent weather-resistant adhesives. This is mainly because structural adhesives not only possess the sealing properties of weather-resistant adhesives but also have superior bonding capabilities, making them more effective.
3. Application Area Difference: Structural silicone sealant has a wide range of applications, primarily used for component reinforcement, anchoring, bonding, and repair. For example, it can be used to bond steel bars and carbon fiber for rebar reinforcement, crack repair, sealing, hole filling, road spike bonding, surface protection, and concrete bonding.
Weather-resistant silicone sealant, on the other hand, is mainly used for weather-resistant sealing of glass curtain walls. It is also suitable for metal (such as aluminum panels) and enamel curtain walls, as well as for weather-resistant sealing of ceiling construction joints.