The role of the surfactant is to reduce the surface tension of the ink

2023-04-08 10:15:30

The effect of using a surfactant is to reduce the surface tension of the ink. High-quality printing can only be obtained when the contact angle between the ink drop and the paper is greater than 140, and the lower the surface tension of the ink, the larger the contact angle. In addition, the lower the surface tension of the ink, the more comprehensive the coverage of the writing substrate can be obtained, so as to improve the quality of writing and printing. However, it is difficult to form tiny uniform ink droplets if the surface tension is too low. Generally, the surface tension should be greater than 35 mN/m.

Cosmetic surfactants have been newly developed in recent years. They have higher and stricter requirements on products, such as anti-aging, skin moisturizing, wrinkle removal, whitening, etc. The active ingredients of cosmetics affect the metabolism of the body after being absorbed by the skin to achieve real beauty, and the effect must be felt or seen. Sodium pyrrolidone carboxylate (PCA) is a natural moisturizing factor in cosmetics, which has anti-aging and anti-wrinkle effects, so PCA is widely used in high-end cosmetics. Surfactants as emulsifiers are very important in the application of cosmetic emulsions, mainly focusing on nonionic surfactants and polymer emulsifiers. Cosmetic emulsions include double emulsions; W/O, O/W, liquid crystal phase, multiple emulsions; W/O/W, O/W/O, microemulsions, etc. The main products are facial cleanser, body lotion, cleansing milk and so on. There will be new products coming out in this field constantly.

Surfactants are a large class of substances. According to statistics, there are more than 1,000 types. In the future, new varieties will be researched and developed, and more than 150 types are commonly used. They are closely related to our lives, affecting and changing our lives.

Sodium tripolyphosphate (sodium tripolyphosphate) classification code GBl5.003, INS451 (i). Chemical structure: This product is a kind of amorphous water-soluble linear polyphosphate, terminated by Na2 PO4 at both ends, chemical formula Na5P3 O10, relative molecular mass 367.86. It is often used in food as moisture retention agent, quality improver, pH regulator, and metal chelating agent.