Water-based pen is usually used on paper, and it is easy to erase when used on whiteboard or sample. Oily pens are generally used for sample signatures or other permanent marks. Oily pens are difficult to wipe, but they can be cleaned with alcohol.
Pens used to be used as signature pens, but now they are gradually replaced by gel pens. Therefore, all such pens are collectively referred to as: signature pens.
Expanding data to ensure the good stability of ink is one of the most critical technologies of neutral ink.
First of all, it is necessary to ensure the efficient dispersion of pigments, promote the stability of highly dispersed pigments without agglomeration, and at the same time, it is necessary to overcome the adhesive tape wrapped in neutral ink and destroy the reasonable dispersion of pigments, which is the stability guarantee of the system.
According to the unique characteristics of pigment, raw materials with appropriate color, loose particles, low polymerization degree and easy dispersion should be selected as the color base of ink, and dispersing and grinding pigment is the first step to ensure the stability of ink and an important link in the manufacture of neutral ink.
The color paste used is also a dispersed system, which is often unstable. When the dispersant coated or adsorbed by pigment particles is competitive by other substances or its charge performance is damaged, the pigment particles are easily pulled by external forces, which will lead to unstable situations such as aggregation, sedimentation and even deposition and stratification among pigment particles.
Thickener is soluble in water and forms its own system with other solvents and additives. When this system is miscible with the color paste system, there is a compatibility problem with the color paste system, which leads to the stability problem of neutral ink.
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