The research on improving the hardness of coatings with silica in coatings is an in-depth and important topic. The following is a detailed analysis of the research:

1. Basic properties of silica

Silica, also known as precipitated hydrated silica, is a high-performance inorganic material. It has the characteristics of large specific surface area, strong adsorption, and stable chemical properties. These characteristics make silica have a wide range of application potential in coatings.

2. Mechanism of improving the hardness of coatings with silica

Network structure formation: Silica particles can form a tight network structure in the coating, which enhances the cohesion and mechanical strength of the coating, thereby improving the hardness of the coating.

Adsorption and fixation: The high specific surface area of silica can adsorb and fix other components in the coating, making the coating more uniform and dense, and also helps to improve the hardness.

3. Experimental data support

Experimental studies have shown that with the increase in the amount of silica added, the hardness of the coating shows a significant upward trend. This result verifies the effectiveness of silica in improving the hardness of the coating. At the same time, the wear resistance and scratch resistance of the coating have also been significantly improved.

4. Practical application cases

Take epoxy floor coating as an example. By adding an appropriate amount of silica, the hardness and various properties of the coating can be significantly improved. For example, under a specific ratio, the hardness of the epoxy floor material can reach 3H, the washing resistance can reach up to 7800 times, the water resistance is increased to 13 days, and the alkali resistance is increased to 7 days. These results show that the application of silica in coatings has broad prospects.

5. Prospects and suggestions

In-depth study of synergy: In the future, the synergy between silica and other additives can be further studied to further improve the comprehensive performance of the coating.

Optimize the ratio and process: By optimizing the ratio of silica and the coating preparation process, the hardness and wear resistance of the coating can be further improved.

Expand the application field: The application of silica in coatings is not limited to improving hardness, but also can explore its application potential in other properties, such as improving the weather resistance and aging resistance of coatings.

In summary, the research on improving the hardness of coatings by silica in coatings has important theoretical significance and practical application value. By deeply studying its mechanism, optimizing the ratio and process, and expanding the application areas, the development and progress of the coatings industry can be further promoted.