How to remove bubbles from the conductive silver gel during the preparation process of touch screen?

In the preparation process of conductive silver gel for touch screens, removing bubbles from the gel is a key step to ensure product quality and performance. This article will explore the preparation process of Advanced Institute (Shenzhen) Technology Co., LtdYB6009 touch screen conductive silver adhesive from Yanbo brandSome effective methods are used to remove bubbles.

1. Choose appropriate dispersing equipment

Advanced Institute (Shenzhen) Technology Co., Ltd. used efficient dispersing equipment, such as TRILOS three roll grinder, in the preparation of YB6009 touch screen conductive silver adhesive for the research platinum brand. This device disperses silver powder more evenly in the resin matrix through the squeezing and shearing action of three rollers, and also helps to remove bubbles.

2. Optimize dispersion process parameters

The dispersion process parameters have a significant impact on the uniformity of silver powder dispersion and the removal of bubbles.Advanced Institute (Shenzhen) Technology Co., LtdThrough extensive experiments, the dispersion process parameters, such as dispersion time, dispersion temperature, and dispersant dosage, were optimized to ensure uniform dispersion of silver powder in the resin matrix while avoiding the generation of bubbles.

3. Use appropriate dispersants

Dispersant is one of the key factors in controlling the uniformity of silver powder dispersion, and also affects the removal of bubbles. Advanced Institute (Shenzhen) Technology Co., Ltd. has selected efficient dispersants that can reduce the surface tension of silver powder, promote the dispersion and stability of silver powder in the resin matrix, and reduce the formation of bubbles.

4. Control the quality of raw materials

The quality of raw materials also has a significant impact on the dispersion uniformity of silver powder and the removal of bubbles. Advanced Institute (Shenzhen) Technology Co., Ltd. strictly controls the quality of raw materials during the preparation process, including the purity, particle size, and shape of silver powder, to ensure that the silver powder is more evenly dispersed in the resin matrix and reduce bubbles.

5. Subsequent processing and defoaming

After preparing the conductive silver paste, further processing is required, such as defoaming, to remove the bubbles generated during the mixing process and ensure the quality and stability of the product. The specific method includes using a slurry impurity removal device for filtration and vacuuming to eliminate residues and bubbles in the silver slurry.

6. Vacuum pump defoaming technology

A defoaming device for conductive silver paste used in touch screens, which generates negative pressure through the operation of a vacuum pump, causing the bubbles in the conductive silver paste to rupture due to inconsistent internal and external pressures, achieving the purpose of defoaming.

7. Stirring blades and needles for defoaming

The electric motor drives the rotating shaft to rotate, and the stirring blades cut and eliminate bubbles in the conductive silver paste.Conductive silver adhesiveDue to the centrifugal motion generated by stirring, it hits the inner wall of the defoamer, and the spikes on the inner wall of the defoamer will eliminate the bubbles in the conductive silver gel that hit the inner wall of the defoamer.

8. Shear force of defoamer for defoaming

The electric motor drives the defoaming cylinder to rotate, utilizing the change in diameter of the defoaming cylinder from large to small and the shear force generated during movement to defoam. The spikes on the spike plate defoam the bubbles in the conductive silver paste flowing out through the defoaming cylinder.

9. Pressure gauge monitoring

The defoamer is equipped with a pressure gauge, which can monitor the pressure changes during the defoaming process in real time to ensure the defoaming effect.

10. Comprehensive defoaming technology

Combining various defoaming technologies mentioned above, Advanced Institute (Shenzhen) Technology Co., Ltd. is preparingYB6009 touch screen conductive silver adhesive from Yanbo brandAt that time, comprehensive defoaming technology was adopted to ensure the quality and performance of conductive silver paste, meeting the needs of electronic products such as touch screens.

Through the above methods, Advanced Institute (Shenzhen) Technology Co., Ltd. can effectively remove bubbles in the conductive silver adhesive of touch screens, improve the conductivity and overall quality of the product.

The above data is for reference only, and specific performance may vary due to production processes and product specifications.