How to determine the application proportion of acetone in ink thinner formula?

How to determine the application proportion of acetone in ink thinner formula?

Acetone is a common organic compound with a chemical formula of Cincreased, which is widely used in industrial production and daily life. Especially in the field of ink manufacturing, acetone is often used as a diluent to adjust the viscosity, fluidity and printing performance of the ink. The application ratio of acetone in the ink thinner formulation is not fixed, but needs to be determined according to the specific ink type, printing process and use environment. This paper will analyze in detail the application ratio determination method of acetone in ink thinner formulation from many aspects.

1. Basic principles for determining the proportion of acetone applications

in the formulation of ink thinner formula, the proportion of acetone needs to consider the following factors:

1.1 ink types and uses

different types of inks have different requirements for thinners. For example, solvent-based inks typically require a higher proportion of diluent to reduce viscosity, while water-based inks may have lower diluent requirements. Used for printing packaging, advertising printing or fine printing ink, the proportion of the diluent will also be different. Therefore, in determining the proportion of acetone, we must first clarify the specific use and type of ink.

1.2 Printing Materials and Surface Characteristics

one of the functions of acetone as a diluent is to help the ink penetrate the surface of the printing material better, thereby improving the adhesion. The surface characteristics of different materials (such as paper, plastic, metal, etc.) vary greatly, and the proportion of acetone needs to be adjusted according to the absorption of the material and the permeability of the ink. Generally, when the surface of the material is rough or the water absorption is strong, the proportion of acetone can be appropriately increased.

Volatility and Construction Conditions of 1.3 Acetone

acetone has a high volatility, which is a double-edged sword when diluting the ink. Although volatility helps to dry the ink quickly, it may also cause the ink to solidify too quickly during the construction process, affecting the printing effect. Therefore, when determining the proportion of acetone, it is necessary to comprehensively consider the temperature, humidity and printing speed of the printing environment.

2. The specific application ratio of acetone in the ink diluent formulation

proportion of acetone in 2.1 regular ink thinner formulations

in most cases, the proportion of acetone in the ink thinner is usually between 5% and 30%. This range is not absolutely fixed, but is adjusted according to the viscosity of the ink, the printing speed and the required drying time. For example:

• quick-drying ink: The proportion of acetone is higher, usually between 15%-25%, to speed up the drying speed of the ink.
• slow drying ink: The proportion of acetone is low, usually between 5% and 10%, to extend the working time of the ink.

Adjustment of Proportion of Acetone under Special Conditions of 2.2

under some special conditions, the proportion of acetone needs to be specially adjusted:

• high temperature and high humidity environment: The volatility of acetone will be affected, causing the ink to dry slowly. At this time, the proportion of acetone may be appropriately increased to enhance the fluidity of the ink.
• low temperature and low humidity environment: The volatility of acetone is enhanced, which may cause the ink to cure too quickly. At this time, the proportion of acetone should be appropriately reduced to avoid the problem of blocking or uneven drying during the printing process.

3. Experiments and tests to determine the proportion of acetone applications

in order to ensure that the proportion of acetone in the ink thinner formula is scientific and reasonable, it usually needs to be verified by experiments and tests. The following are commonly used test methods:

3.1 Viscosity Test

the viscosity of the ink directly affects the printing effect. By adjusting the proportion of acetone, the change of ink viscosity can be observed, and the appropriate proportion can be selected to make the viscosity meet the printing requirements.

3.2 drying time test

the proportion of acetone affects the drying speed of the ink. Through experiments, the drying time under different acetone ratios can be determined to ensure the smooth progress of the printing process.

3.3 printing effect test

finally, it is necessary to evaluate the effect of acetone ratio on ink performance through actual printing tests, including indicators such as adhesion, gloss, and color reduction.

4. Safety and environmental considerations

when determining the application ratio of acetone, it is also necessary to consider its safety and environmental protection. As a flammable organic solvent, acetone has certain volatility and toxicity. Therefore, in actual operation, the proportion of acetone used should be reduced as much as possible, and corresponding ventilation and protective measures should be taken to ensure the safety of operators and environmental sustainability.

Summary

the proportion of acetone in the ink thinner formulation is a problem that requires comprehensive consideration of many factors. From ink type, printing material to construction conditions, every detail can affect the proportion of acetone. Through scientific experiments and tests, and combined with the actual use of the environment to adjust, can work out a reasonable proportion of acetone, so as to improve the printing performance and use of ink. It is also necessary to give full consideration to safety and environmental protection to ensure the safety of the production and use process.