Dendritic silver coated copper powder is an important electronic material with high electrical conductivity, thermal conductivity, thermal conductivity, electrical conductivity, and wear resistance. It is widely used in fields such as electronics, computers, communications, and automobiles. Let's take a detailed look at the properties, applications, and preparation methods of dendritic silver coated copper powder.
1、 Nature
The dendritic silver coated copper powder is mainly composed of two metal elements, silver and copper, with a ratio of 70:30, and is a composite material. This material has high conductivity and thermal conductivity, low electrical resistivity, good thermal stability, and is not easily oxidized or melted after heating. It has good corrosion resistance and can be used in an oxidizing atmosphere. In addition, dendritic silver coated copper powder has high hardness and wear resistance, and can be used to make touch screens, conductive adhesives, conductive inks, and other products.
2、 Application
Due to its excellent conductivity and thermal conductivity, dendritic silver coated copper powder is widely used in various fields. The following are the main application scenarios of this material:
In the field of electronics, dendritic silver coated copper powder can be used as a conductive adhesive for the production of electronic components, integrated circuits, and flat panel televisions.
2. Mechanical industry: It can be used for surface coating of metal materials to increase their wear resistance and conductivity, and is widely used in fields such as automotive manufacturing, machine manufacturing, and aerospace.
3. Medical field: Dendritic silver coated copper powder can be used to produce medical electrodes, such as electrocardiogram electrodes and blood oxygen sensors.
4. Environmental protection field: When mixed with other materials, it can be made into conductive ink for use in the field of environmental protection.
3、 Preparation method
1. Chemical reduction method: Mix silver nitrate and copper nitrate together and add a reducing agent. After the reaction is complete, filter to obtain dendritic silver coated copper powder.
2. Thermal decomposition method: Mix silver and copper metal solutions together, then heat treat to form dendritic silver coated copper powder.
Both of the above methods require professional production equipment and technology, and the preparation process requires controlling the reaction temperature, rate, and amount of reducing agent to ensure that the prepared dendritic silver coated copper powder has good performance.
4、 When purchasing secondary encapsulation paste for chip resistors, the following points should be noted:
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Choose a reputable and legitimate manufacturer for procurement to ensure product quality.
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Confirm product specifications and performance: Before purchasing, it is necessary to understand the product's specifications, performance, scope of use, and other information, and match them with actual needs to ensure that they can meet the usage requirements.
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Pay attention to product prices: You should pay attention to the price of the product and compare it with the quality and performance of the product to avoid blindly pursuing low prices and resulting in a decline in quality.
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Pay attention to product storage conditions: The secondary encapsulation slurry of chip resistors is a chemical and needs to be stored under dry, ventilated, light proof, water proof, acid and alkali proof conditions, and strictly used according to the manufacturer's required shelf life.
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Require suppliers to provide technical support: When selecting suppliers, priority should be given to those who can provide technical support and after-sales service, in order to promptly solve problems that arise during use.
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