Additives In Silicone Sealant Making | JCT Machinery

1. Control Rheology

Adding white carbon black can adjust the rheology of neutral silicone sealant so that it has appropriate fluidity and extrudability, making it easier to handle during construction.

2. Improve Anti-aging Properties

White carbon black can help reduce the aging rate of neutral silicone sealant, extend its service life, and enhance its resistance to ultraviolet rays, oxidation and chemical corrosion.

3. Filling Effect

As a filler, white carbon black is filled into the structure of silicone sealant, which can fill the gaps between colloids and increase the compactness of the colloid. This filling effect reduces the formation of cracks and defects, thus improving the overall mechanical strength of silicone sealant.

4. Increased Stretch Resistanct

High surface area and microstructure of white carbon black provide more friction area, making the silicone sealant more resistant to stretch. This means that when stressed, white carbon black filled silicone sealant can better resist rensile stress, thus increasing its mechanical strength.

5. Wear Resistance

The hardness and filling effect of white carbon black can improve the wear risistance of silicone sealant. White carbon black filled silicone sealant is more difficult to damage when exposed to friction of abrasion because the filler protects and supports it, thereby extending the life of silicone sealant.

1. Luoyang Lime Powder

Luoyang lime powder is produced from limestone calcined at high temperature. In the production of silicone sealant, Luoyang lime powder can be used as both a cross-linking agent and a catalyst to enhance the cross-linking reaction speed of silicone sealant.

2. Barite

Barite is a mineral containing calcium, sulfur, oxygen, carbon and other elements. It is one of the commonly used calcium powders in silicone sealant. Barite can not only promote the cross-linking reaction of silicone sealant, but also improve the heat resistance and wear resistance of silicone sealant.

3. Calcium Oxide

Calcium oxide is calcium powder derived from the decomposition of limestone at elevated temperatures and is a commonly used catalyst in silicone sealant. The addition of calcium oxide can increase the cross-linking reaction speed of silicone sealant and make the reaction proceed evenly.