Ethyl silicate CAS NO: 78-10-4 QM-Si28

Ethyl silicate is the core base material for manufacturing inorganic zinc-rich coatings. During curing, the silica network structure it forms bonds strongly with zinc powder, providing not only a physical barrier but also effectively preventing steel corrosion through electrochemical action (cathode protection). These coatings are widely used in marine engineering, bridges, large steel structures, and other fields with extremely high corrosion resistance requirements, exhibiting excellent chemical corrosion resistance and heat resistance.

In investment casting (lost-wax casting), ethyl silicate hydrolysate is a key binder for preparing the mold shell. It bonds firmly with refractory powders (such as quartz powder and zircon powder) to create a high-strength mold shell. During high-temperature calcination, the binder burns, leaving voids that give the mold shell good permeability. This process can produce precision castings with high dimensional accuracy, smooth surfaces, and complex shapes, making it the mainstream process for manufacturing key components such as aero-engine blades and turbine disks.

Ethyl silicate is a major precursor for preparing silica aerogels. Aerogel materials with extremely low density and excellent thermal insulation properties can be obtained through the sol-gel method, utilizing the three-dimensional network structure formed by hydrolysis and condensation, followed by drying. Furthermore, it is used to prepare silica nanoparticles and mesoporous materials, and is widely applied in catalyst supports and adsorbents. In the electronics industry, high-purity electronic-grade tetraethyl orthosilicate (TEOS) is an important silicon source in the chemical vapor deposition (CVD) process of semiconductor manufacturing, used to deposit silica insulating layers, and is one of the key materials for manufacturing integrated circuits.

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