HQ-50 gas-phase silica physical and chemical parameters

Characteristics of low specific surface area gas-phase silica HQ-50

1. Gas phase white carbon black HQ-50 has extremely low thickening effect. This is the most direct result of low specific surface area (specific surface area (50 ± 10)). The smaller the specific surface area, the weaker the hydrogen bonding network that can be formed on the particle surface, resulting in significantly lower thickening ability than conventional gas-phase white carbon black.

2. It can achieve extremely high filling volume. Due to its extremely low specific surface area and low thickening effect, it brings a very practical advantage. Customers can significantly increase the amount of gas-phase silica powder in the formula, achieving high filling levels without making the rubber or liquid system difficult to process. This provides space for precise adjustment of the hardness, density, dielectric properties, or optical properties of the final product through the filling amount.

3. Has minimal interference with the rheological properties of the system. In coatings or liquid adhesives, conventional gas-phase white carbon black is often used to produce thixotropy. But when users do not want to significantly change the rheological behavior of the system and only want to utilize other functions of white carbon black (such as reinforcement and improvement of surface properties), gas-phase silica HQ-50 is an ideal choice.