Study on surface tension and wettability of Paper Water-Based Ink
Date：2024-01-22 From：Star Color
In the printing industry, water-based ink is gradually becoming the mainstream printing medium due to its environmental protection, safety and low toxicity characteristics.Among them, Paper Water-Based Ink is widely used in all kinds of printed matter because it is suitable for various paper materials and printing processes.However, the performance of paper water-based ink
is affected by many factors, among which surface tension and wettability are the key factors affecting its printing effect.This Paper will focus on the surface tension and wettability of paper Water-Based Ink, in order to provide reference for related research and application.
The relationship between surface tension and paper water-based ink
Surface tension is a fundamental physical property of liquids, which describes the mutual attraction between molecules on the liquid surface.In water-based paper inks, surface tension determines the fluidity and wetting ability of the ink during the printing process.The appropriate surface tension helps the ink spread evenly on the surface of the substrate material, and improves the clarity and color saturation of the printing.
In order to obtain the best printing results, it is necessary to understand the surface tension matching relationship between water-based paper inks and different paper materials.Usually, the surface tension of the water-based paper ink should match the surface energy of the paper to ensure that the ink can be spread smoothly on the surface of the paper.For some special papers, such as coated paper or special textured paper, it may be necessary to adjust the formula of the water-based paper ink to obtain the appropriate surface tension.
The relationship between wettability and printing effect
Wettability refers to the ability of a liquid to infiltrate a solid surface, which is closely related to surface tension.In the process of water-based paper ink printing, the wettability determines the contact Angle and spreading range of the ink and the paper surface.Good wettability helps to reduce the contact Angle between the ink and the paper surface and increase the spread area of the ink, thereby improving the color expression and clarity of the print.
In order to improve the wettability of water-based paper and ink, the following measures can be taken:
Optimize the ink formula: by adding additives such as wetting agents to reduce the surface tension of the ink and improve the wetting ability of the ink.
Control the printing environment: maintain the appropriate printing temperature and humidity to promote the fluidity and wettability of the ink during the printing process.
Select the right paper: Select the right paper material according to the use and requirements of the print to ensure good wetting of the ink and paper surface.
Control printing pressure: A reasonable printing pressure helps the ink to better wet the surface of the paper and improve the color effect and clarity of the print.
Experimental study on surface tension and wettability
In order to deeply understand the influence of surface tension and wettability of water-based paper ink on printing effect, we conducted a series of experiments.Different paper materials, surface tension measuring instrument and wettability measuring instrument were used in the experiment.By measuring the surface tension and contact Angle of different paper surfaces, and observing the spread of ink on different paper surfaces, we reached the following conclusions:
The appropriate surface tension can improve the wettability and spread area of the ink on the surface of the paper, thereby improving the color expression and clarity of the print.
The surface roughness of the paper has a certain effect on the wettability of the ink.Properly increasing the roughness of the paper surface can improve the adhesion and color saturation of the ink.
By adjusting the formula and printing process parameters of the water-based paper ink, the surface tension and wettability of the ink can be optimized, so as to obtain better printing results.
By studying the influence of surface tension and wettability of Paper Water-Based Ink on printing effect, we can better understand its performance characteristics and application range.In practical applications, printing enterprises can choose the appropriate water-based paper and ink and adjust the process parameters according to the characteristics of the substrate material and printing requirements to obtain the best printing effect.