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Silicone Adhesives: Potential Impact of Air Bubbles and Preventive Measures


Silicone adhesive is an efficient and environmentally friendly adhesive that is widely used in bonding and fixing various materials and fields. However, if bubbles appear during use, it may have a serious impact on the performance and quality of the product. This article will discuss the causes of bubbles in silicone adhesives and how to prevent and deal with this phenomenon.

1. The generation of bubbles

The generation of bubbles is usually caused by factors such as uneven mixing, insufficient stirring, uneven coating, and ambient temperature and humidity. In addition, the drying process of silicone adhesive may also lead to the formation of bubbles.

2. The influence of bubbles

Air bubbles can have a serious impact on the bonding strength, waterproofness and other protective properties of silicone adhesives. When bubbles appear on the bonding surface, it will lead to poor contact and thus affect the bonding strength. In addition, bubbles may cause air leakage on the bonding surface, further reducing the protective performance. If fixed components become loose within a short period of time, it may be caused by air bubbles.

3. Preventive measures

To avoid bubbles in silicone adhesives during use, users and manufacturers can take the following measures:

1. Ensure uniform mixing: When mixing silicone adhesive, a stirrer or other mixing tools should be used to ensure that the ingredients are fully mixed to avoid unevenness.

2. Pay attention to environmental conditions: Try to use silicone adhesive in an environment with suitable temperature and low humidity to reduce the generation of bubbles.

3. Even coating: When applying silicone adhesive, professional coating tools should be used to ensure even distribution of glue and avoid local accumulation.

4. Full drying: After using silicone adhesive, sufficient drying time should be given to ensure that the glue is completely solidified and to avoid bubbles caused by insufficient drying.

5. Check the product: Before use, users should check the silicone adhesive to confirm whether there are bubbles in the product. If there are bubbles, they should be dealt with or contact the manufacturer.

In short, understanding the causes and effects of bubbles and taking corresponding preventive measures will help ensure the effectiveness and service life of silicone adhesives. Therefore, both users and manufacturers should pay attention to this issue and take effective measures to prevent and deal with bubbles.

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