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How does silicone sealant ensure effective bonding?

In practical use, the bonding performance of silicone sealant is its fundamental and crucial property, as it directly affects the durability of the seal and even the safety of building components. This requires a strong adhesive force to be developed through the interaction between the sealant and the substrate being bonded.

Choosing the right sealant

Since the invention of silicone sealants, there has been significant development in the past 80 years, resulting in a wide variety of silicone sealants available today. When selecting a sealant, compatibility between the sealant and the substrate should be given top priority. It is necessary to choose the appropriate sealant based on the specific characteristics of the substrate.

HOMEY silicone sealants offer various product series, such as 860 Multi-Use Sealant, 966 Weatherproof Sealant for Curtain Walls, 650 General Silicone for Doors and Windows, 977 Glass Panel Sealant, 988 Structural Sealant for Curtain Walls, and more. Each product series is designed for specific substrates, and it is important to choose the appropriate sealant based on the substrate being bonded.

For accurate selection, it is recommended to refer to the detailed instructions provided by HOMEY for each product. These instructions will provide information about the suitable substrates for each sealant. Before use, it is essential to carefully read and understand the instructions to ensure proper application.

A clean substrate surface is extremely important

The presence of dust and dirt reduces the contact area between the sealant and the substrate surface, which can lead to stress concentration and premature failure of the sealant under load. Oil contamination can cause the sealant to dissolve and lose effectiveness. Rain, snow, or frost can prevent proper adhesion of the sealant. Therefore, it is important to clean the substrate surface before applying the sealant, ensuring it is clean and dry to achieve optimal adhesion of the sealant.

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The caulking joint should be set appropriately

When applying sealant, in addition to ensuring that the width and depth of the joint are reasonable, it is crucial to avoid three-sided adhesion. This is because three-sided adhesion severely hampers the displacement capability of the sealant, leading to excessive internal stress and potential cracking.

The submerged environment is not suitable for use

Although the curing of silicone sealant involves the participation of water, due to its structural composition, it cannot be immersed in water for a long time. This is because prolonged immersion can dissolve and extract the components of the sealant, thereby altering the composition and structure of the sealant, inevitably leading to a decrease in its performance.

Protection is necessary before complete curing

Regardless of the type of sealant, it is extremely fragile before it is completely cured. Once it is fully cured, its durability and weather resistance become very strong, and all its excellent properties can be fully utilized. Therefore, during the period from applying the sealant to complete curing, it is advisable to avoid any situations that would put stress on the sealant.

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To ensure smooth application of the adhesive, it is recommended that everyone conduct compatibility and adhesion tests before purchasing the adhesive. Before applying a large amount of adhesive, it is advisable to perform a small-scale adhesive test. Additionally, it is important to regularly inspect the adhesive during use at fixed time intervals.

HOMEY has a professional service team that provides professional compatibility and adhesion testing services based on customer requirements. If there are any issues during the usage, our team of experts will be available to provide immediate assistance and solutions. We are committed to addressing any concerns or difficulties our customers may encounter. If you have any adhesive needs, please feel free to contact us!

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