In the preparation of aluminum paste, each component serves a specific function that contributes to the overall performance and properties of the paste:
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Aluminum Powder:
- Function: The primary function of aluminum powder in the paste is to provide the desired metallic properties, such as conductivity and reflectivity. Aluminum is also reactive, which can aid in certain applications (like coatings) by enhancing adhesion when interacting with other materials. Additionally, it contributes to the paste's thickness and stability.
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Zinc Oxide:
- Function: Zinc oxide is often added for various reasons, including acting as a pigment, stabilizer, and UV absorber. In coatings, it helps improve weather resistance and durability. It can also enhance the anti-corrosive properties of the aluminum paste and help in optimizing the rheology (flow characteristics) of the paste.
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Liquid Paraffin:
- Function: Liquid paraffin serves as a binder and solvent in the aluminum paste. It helps to disperse the aluminum powder evenly throughout the paste, ensuring a consistent texture and application. Additionally, it can enhance the adhesion of the paste to substrates and improve the overall workability of the mixture.
In summary, aluminum powder provides metallic properties and reactivity, zinc oxide adds stability and protective characteristics, and liquid paraffin acts as a binder that aids in the dispersion and application of the paste. Together, they form a versatile material used in various applications including coatings, inks, and cosmetic formulations.