In the field of electronic manufacturing, printing of gold conductor paste is an important process step. The consistency of brightness after printing directly affects the appearance quality of the product. Advanced Institute (Shenzhen) Technology Co., Ltd. has conducted in-depth research in this field and is usingResearch Platinum YB8113 Gold Conductor PasteDuring the process, a large amount of experimental data and practical experience were accumulated.
Factors affecting the brightness of printed gold conductor paste
Composition of slurry
- Gold powder characteristics
- Research Platinum YB8113 Gold Conductor PasteThe main components include gold powder, organic carrier, etc. The particle size, shape, and distribution of gold powder have a significant impact on brightness. Experimental data shows that when the average particle size of gold powder is within the range of 1-3 μ m, the brightness after printing is relatively high and uniform. If the particle size of gold powder is greater than 3 μ m, the surface roughness increases, the scattering of light is enhanced, and thus the brightness is reduced. For example, when the particle size is 2 μ m, the brightness value is 95%, while when the particle size is 4 μ m, the brightness value drops to 85%.
- The influence of organic carriers
- The type and content of organic carriers can also affect brightness. The experimental results showed that when the content of binder in the organic carrier increased from 10% to 15%, the brightness after printing slightly decreased. This is because an increase in the content of the binder will cover the surface of the gold powder, affecting light reflection. For example, when the adhesive content is 10%, the brightness value is 90%, but when the content is 15%, the brightness value drops to 88%.
Printing process parameters
- Printing pressure
- Printing pressure is one of the key parameters. Experimental data shows that when the printing pressure is within the range of 0.3-0.5MPa, the brightness after printing is relatively consistent. When the printing pressure is 0.2MPa, the printing is uneven and the brightness value is only 80%; When the printing pressure reaches 0.6 MPa, the slurry is excessively squeezed and the brightness value drops to 75%.
- printing speed
- Printing speed is equally important. Within the speed range of 5-10mm/s, the consistency of brightness is good. When the printing speed is 3mm/s, the slurry stays on the screen for too long, the drying is uneven, and the brightness value is 82%; When the printing speed is 15mm/s, the slurry cannot be evenly spread out in time, and the brightness value drops to 78%.
Dry conditions
- drying temperature
- The drying temperature has a significant impact on the consistency of brightness. Experimental data shows that when the drying temperature is 60 ° C, the drying process is slow and the brightness value is 80%; At a drying temperature of 120 ° C, although the drying speed is fast, impurities are generated and the brightness value drops to 75%. regardingResearch Platinum YB8113 Gold Conductor PasteThe drying temperature is more suitable between 80-100 ° C, and the brightness value can reach over 90%.
- Dry environment humidity
- The humidity in a dry environment cannot be ignored. Drying in an environment with a relative humidity of 40% -60% results in consistent brightness after printing. When the relative humidity is higher than 70%, water is mixed into the slurry, and the brightness value drops to 80%; When the relative humidity is below 30%, the drying speed is too fast and the brightness value drops to 75%.
Strategy for maintaining consistent brightness
Optimize the slurry formula
- Adjust the ratio of gold powder to organic carrier
- According to the research results of Advanced Institute (Shenzhen) Technology Co., Ltd., the formula of YB8113 gold conductor paste can be fine tuned. For example, without affecting the conductivity, adjusting the ratio of gold powder to organic carrier can increase the gold powder content appropriately, while optimizing the particle size distribution of gold powder, controlling the average particle size within the ideal range of 1-3 μ m to improve brightness and maintain consistency.
- Choose adhesive with low viscosity and high transparency
- Screen the components in the organic carrier, select low viscosity and high transparency binders, and control the content at around 10% to reduce the negative impact on brightness.
Accurately control printing process parameters
- Using high-precision printing equipment
- Using high-precision printing equipment, the printing pressure is precisely controlled between 0.3-0.5MPa, and the printing speed is between 5-10mm/s.Advanced Institute (Shenzhen) Technology Co., LtdIn actual production, by introducing advanced printing pressure sensors and speed controllers, the error of printing pressure is controlled within ± 0.05MPa, and the error of printing speed is controlled within ± 1mm/s, effectively improving the consistency of brightness.
- Regularly calibrate and maintain printing equipment
- Regularly calibrate and maintain printing equipment to ensure a constant distance between the screen and the printing substrate. For example, when using YB8113 gold conductor paste for printing, the distance between the screen and the substrate should be kept between 1-2mm to ensure printing uniformity and maintain consistent brightness.
Standardize drying conditions
- Adopting intelligent drying equipment
- Using intelligent drying equipment, the drying temperature is precisely controlled between 80-100 ° C, and the relative humidity is between 40% and 60%. Experimental data from Advanced Institute (Shenzhen) Technology Co., Ltd. shows that by using drying equipment with temperature and humidity feedback control system, the fluctuation of drying temperature can be controlled within ± 5 ° C and the fluctuation of relative humidity can be controlled within ± 10%, greatly improving the consistency of brightness.
- Ensure even air circulation in a dry environment
- During the drying process, ensure even air circulation in the drying environment to avoid local overheating or excessive humidity. For example, by arranging ventilation openings and air circulation devices reasonably, the temperature and humidity distribution in the dry environment can be made more uniform, thereby ensuring consistent brightness of the printed gold conductor paste.
conclusion
Through in-depth analysis of the factors affecting the brightness of gold conductor paste after printing, combined with the work of Advanced Institute (Shenzhen) Technology Co., LtdResearch Platinum YB8113 Gold Conductor PasteBased on experimental data and practical experience, we can maintain the consistency of brightness by optimizing the slurry formula, accurately controlling printing process parameters, and standardizing drying conditions to meet the requirements of appearance quality. The effective implementation of these strategies requires continuous monitoring and adjustment during the production process to ensure that the appearance quality of the product meets high standards.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.
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