In fields such as electronic packaging, high-temperature conductive silver paste plays a crucial role in achieving good electrical connections and mechanical fixation. However, during the use of high-temperature conductive silver paste, wire drawing phenomenon occurs, which not only affects the appearance of the product but may also pose a potential threat to its performance. This article will delve into how to avoid the wire drawing phenomenon of high-temperature conductive silver paste, and present the findings of Advanced Institute (Shenzhen) Technology Co., Ltd
Research Platinum YB6001 High Temperature Conductive Silver AdhesiveAnalyze as an example.
1、 Reasons for the occurrence of wire drawing phenomenon
- Adhesive viscosity: When the viscosity of high-temperature conductive silver adhesive is too low, the adhesive is prone to form filamentous sagging during the dispensing process due to the effects of gravity and surface tension. For example, if the solvent of silver paste evaporates too much, causing its concentration to decrease, the viscosity will also decrease, thereby increasing the possibility of wire drawing.
- Glue dispensing parameters: Excessive dispensing speed, unstable pressure, and improper needle selection can all cause wire drawing phenomenon. If the dispensing speed is too fast and the amount of glue squeezed out in an instant is too large, it is difficult to form a stable shape in a short time, and it is easy to be pulled into threads; Unstable pressure can cause uneven extrusion of the adhesive and lead to wire drawing. In addition, if the inner diameter of the needle is too small, it will cause significant resistance when the glue is extruded, and when the glue is extruded, it may also form a wire drawing due to stress release.
- Temperature and humidity: If the ambient temperature is too high or the humidity is too high, it will affectHigh temperature conductive silver adhesiveThe performance has an impact. Excessive temperature can accelerate the evaporation rate of solvents in silver paste, leading to changes in viscosity and ultimately causing wire drawing; Excessive humidity may cause hydrolysis and other reactions in certain components of the silver paste, altering its properties and increasing the likelihood of wire drawing.
2、 Methods to avoid wire drawing phenomenon
- Optimize the formula of the adhesive solution:Advanced Institute (Shenzhen) Technology Co., LtdIn the research and development of YB6001 high-temperature conductive silver adhesive, the viscosity and thixotropy of the adhesive were optimized by precisely controlling the particle size, shape, and proportion of additives such as resin of the silver powder. Appropriate viscosity and thixotropy can ensure that silver adhesive can be smoothly extruded during the dispensing process, and can quickly and stably form after extrusion, reducing the occurrence of wire drawing phenomenon. The YB6001 high-temperature conductive silver adhesive from Yanbo brand adopts advanced formula design, which enables the silver adhesive to maintain good stability under different environmental conditions, effectively reducing the risk of wire drawing.
- Adjust dispensing parameters: When using YB6001 high-temperature conductive silver adhesive from Yanbo brand, it is necessary to adjust the dispensing parameters reasonably according to the actual situation. Firstly, the appropriate dispensing speed should be selected based on the viscosity of the adhesive. Generally speaking, for silver adhesives with higher viscosity, the dispensing speed can be appropriately reduced to ensure that the adhesive can be evenly extruded and stably formed. Secondly, to ensure the stability of the dispensing pressure, it can be achieved by regularly checking the pressure control system of the dispensing equipment. In addition, it is crucial to choose a needle with a suitable inner diameter. The needle should be selected based on the characteristics of silver glue and the required dispensing amount, which can ensure smooth extrusion of the glue without generating excessive stress.
- Control environmental conditions: In order to avoid wire drawing, it is necessary to strictly control the temperature and humidity of the usage environment. Advanced Institute (Shenzhen) Technology Co., Ltd. suggests usingResearch Platinum YB6001 High Temperature Conductive Silver AdhesiveControl the ambient temperature between 20 ℃ and 25 ℃, and the relative humidity between 40% and 60%. Under such environmental conditions, the performance of silver paste can remain stable, and the solvent evaporation rate is moderate, effectively reducing the occurrence of wire drawing phenomenon. At the same time, when storing silver paste, a dry and cool environment should be chosen to avoid changes in the performance of the silver paste due to environmental factors.
3、 Summary
The wire drawing phenomenon of high-temperature conductive silver paste is a key issue that needs to be closely monitored in practical applications. By optimizing the adhesive formula, adjusting dispensing parameters, and controlling environmental conditions, the occurrence of wire drawing can be effectively avoided. Advanced Institute (Shenzhen) Technology Co., Ltd. has fully considered these factors in the research and production process of YB6001 high-temperature conductive silver adhesive, providing users with high-quality products with stable performance and not easy to draw. In practical use, as long as users follow the correct method of operation, they can fully utilize the advantages of Yanbo brand YB6001 high-temperature conductive silver adhesive, ensure the smooth progress of electronic packaging and other work, and improve the quality and reliability of the product.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.
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