Whether the quality of PCB ink is excellent or not cannot be separated from the combination of the above major components in principle. Excellent ink quality is the comprehensive embodiment of scientific formula, progressiveness and environmental protection. This is reflected in:

Viscosity is the abbreviation for dynamic viscosity. It is generally expressed in viscosity, that is, the shear stress of fluid flow divided by the Velocity gradient in the direction of the flow layer, and the International unit is Pa/s or mPa/s. In PCB production, it refers to the fluidity of ink generated by external forces.

Conversion relationship of viscosity units:

1Pa. S=10P=1000mPa. S=1000CP=10dpa. s

Plasticity refers to the ability of ink to maintain its pre deformation properties after being deformed by external forces. The plasticity of ink is beneficial for improving printing accuracy;

Thixotropy ink is gelatinous when standing, but its viscosity changes when being touched, also known as shake and sagging resistance;

Liquidity (Leveling) The degree to which ink unfolds in all directions under external force. The fluidity is the reciprocal of viscosity, which is related to the plasticity and Thixotropy of ink. If the plasticity and Thixotropy are large, the fluidity is large; If the liquidity is high, the imprint is easy to expand. Those with low fluidity are prone to networking and ink formation, also known as mesh patterns;

Viscoelasticity refers to the ability of ink to quickly rebound after being sheared and broken by a scraper. Require fast ink deformation speed and quick ink rebound to facilitate printing;