Introduction:
Precipitated hydrophobic silica is a unique material with excellent wetting properties and high hydrophobicity. Its wide range of applications includes lubricants, electronic devices, paper, coatings, and inks. Mastering the preparation processes and technologies of precipitated hydrophobic silica is crucial for the development of the materials industry. This article will introduce the properties, preparation methods, and the significance and paths of technology transfer for precipitated hydrophobic silica.
I. Properties of Precipitated Hydrophobic Silica
Precipitated hydrophobic silica is a porous nanomaterial covered with a special silicone protective layer. This material has extremely low surface energy and high hydrophobicity. Its porous structure provides a large specific surface area, which provides excellent wetting and adsorption properties. Precipitated hydrophobic silica also has high charge and excellent stability, making it an ideal choice for the preparation of high-performance lubricants and color enhancers.
II. Preparation Methods of Precipitated Hydrophobic Silica
1. The most common preparation method is wet synthesis. A certain amount of silane is dispersed in a solvent to form a suspension. By controlling parameters such as reaction temperature, reaction time, and additives, the hydrolyzed silane particles precipitate and self-assemble with surfactants to form a hydrophobic silane film. Appropriate post-treatment (such as washing, drying, and grinding) yields precipitated hydrophobic silica
2. Another commonly used preparation method is the sol-gel method. This method first prepares an organosilica sol, which is then gelled by adjusting conditions such as pH, water volume fraction, and a specified precipitation time. High-temperature calcination and acid washing remove the organic film, resulting in precipitated hydrophobic silica.
III. The Significance of Precipitated Hydrophobic Silica Technology Transfer
Mastering the preparation technology of precipitated hydrophobic silica is of great significance to the development of the materials industry.
Precipitated hydrophobic silica can serve as an ideal alternative to high-performance lubricants, improving friction and wear properties. In various mechanical equipment and industrial applications, the use of high-quality lubricants can reduce friction loss and energy consumption, extending equipment life. Therefore, the transfer of precipitated hydrophobic silica technology will enhance the scientific and technological level and product quality of the lubricant industry.
Precipitated hydrophobic silica has broad application prospects in electronic devices. Its high chargeability and porous structure can improve the performance and stability of electronic devices. For example, in batteries, capacitors, and sensors, precipitated hydrophobic silica can increase the contact area between electrodes and electrolytes, enhancing energy conversion efficiency and sensor accuracy.
Precipitated hydrophobic silica can also be used in paper, coatings, and inks. In papermaking, its application in coatings can improve paper smoothness and gloss, and improve ink uniformity. Its use in coatings and inks can provide excellent color enhancement and anti-settling properties.
IV. Pathway for Precipitated Hydrophobic Silica Technology Transfer
Precipitated hydrophobic silica technology transfer can be achieved through various channels:
1. Scientific and technological exchange conferences and exhibitions: Organizing relevant scientific and technological exchange conferences and exhibitions provides a platform for technology transfer. This can attract domestic and international experts, scholars, and business representatives, fostering collaboration and technological exchange.