The main components of aluminum paste are energy flakes, solvents and additives. Although a layer of additives will be coated on the surface of the flakes during the grinding process of aluminum paste, due to the high activity of aluminum itself, if too much moisture is mixed into the production process of aluminum paste, it will still have a great impact on the storage performance, color performance and safety of the lead silver paste.
Under normal circumstances, the aluminum flakes in the silver paste maintain a high activity, and after surface coating and polishing, they show extremely high gloss. If the moisture content of the aluminum paste exceeds the standard, the aluminum flakes will quickly oxidize and denature, causing the color to become gray.
The impact on the storage of aluminum paste. Storage resistance is an important performance of the silver paste quality standard. If the moisture content of the aluminum paste exceeds the standard, or if moisture is also introduced during transportation and storage, the aluminum paste will slowly react with water and affect its normal storage.
The impact on the safety of aluminum paste, Rite A kind of active metal, the aluminum powder we use in production has a layer of aluminum oxide protection on the surface. During the production process, the aluminum oxide flakes on the surface of the product will be ground off, and then coated with additives, etc. If the water content in the product is too high, the aluminum may react 2A1+6H2O=2A1(OH)3+3H2(exothermic) . This reaction produces flammable hydrogen and releases heat, which can easily cause a fire. In a closed environment, an explosion may also occur. Therefore, from a safety perspective, the moisture content in the product must be controlled within a safe range.
Taking into account seasonal issues, and strict control of moisture is a particular concern in the production of aluminum paste in the spring and summer rainy seasons. In addition to routine testing of solvent procurement and storage, and moisture content of finished aluminum paste products, more attention should be paid to strengthening the waterproofing of the storage environment of solvent oil and aluminum powder raw materials, strengthening waterproofing inspections during the production of aluminum paste, and strengthening waterproofing of aluminum paste products during storage and transportation.
Safety is the survival foundation of aluminum paste supplier. Aluminum paste should pay close attention to the impact of moisture, conduct thorough investigations and monitoring, and prevent problems before they happen!