Hydroxyethyl cellulose essentials

First, product performance

1. HEC is soluble in hot or cold water, and does not precipitate at high temperature or boiling, so that it has a wide range of solubility and viscosity characteristics, and non-thermogelability;
2. The non-ionic type itself can coexist with other water-soluble polymers, surfactants and salts in a wide range, and is an excellent colloid thickener containing a high concentration of dielectric solution;
3, water retention capacity is twice as high as methyl cellulose, with good flow regulation;
4. The dispersing ability of HEC is the worst dispersing ability compare with the recognized methyl cellulose and hydroxypropyl methyl cellulose, but the protective colloid is the strongest.

Second, how to use

1. Add clean water to the vat with a high-cut agitator.
2. Start stirring at low speed and slowly sift the hydroxyethyl cellulose into the solution.
3. Continue stirring until all particles are wet.
4. Then, an antifungal agent, an alkaline additive or the like such as a pigment, a dispersing aid, and ammonia water are add.
5. Stir until all the hydroxyethyl cellulose is completely dissolved (the viscosity of the solution is significantly increased) before adding the other components of the formulation and grinding to the finished product.

Third, use attention

Since the surface treated hydroxyethyl cellulose is a powder or cellulose solid. As long as you pay attention to the following items, it is easy to operate and dissolve in dissolved water.

1. Before and after the addition of hydroxyethyl cellulose, it must be stirred constantly. Until the solution is completely clear and clear.

2. It must be slowly sieved into the mixing tank. Do not add the hydroxyethyl cellulose which has been formed into a block and a spherical shape directly into the mixing tank.

3. The water temperature and pH value in water have a significant relationship with the dissolution of hydroxyethyl cellulose, and special attention must be paid.

4. Never add some alkaline substances to the mixture before the hydroxyethyl cellulose powder is warmed by water. Increasing the pH after warming up will help dissolve.

5, as far as possible, add anti-fungal agents early.

6. When using the high viscosity type hydroxyethyl cellulose, the concentration of the mother liquor should not be higher than 2.5-3%. Otherwise the mother liquor is difficult to handle. The post-treated hydroxyethyl cellulose is generally not easily form into a block or a sphere. It also does not form water to form a poorly soluble globular colloid.

If you have any questions, you can send them to my email : tanyatao@qinahaochem.com

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