Uses of hydroxyethyl cellulose

As a non-ionic surfactant, hydroxyethyl cellulose has the following properties in addition to the functions of suspending, thickening, dispersing, floating, bonding, film forming, water retention and providing protective colloid:

1. HEC is soluble in hot water 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-thermal gelation;

2. Compared with the recognized methyl cellulose and hydroxypropyl methyl cellulose, the dispersing ability of HEC is the worst, but the protective colloid ability is the strongest.

3. The water retention capacity is twice as high as that of methyl cellulose, and it has better flow regulation.

Precautions when using:

Since the surface-treated hydroxyethyl cellulose is powder or cellulose solid, it is easy to handle and dissolve it in water as long as the following items are paid attention to.

1. Before and after adding hydroxyethyl cellulose, it must be stirred continuously until the solution is completely transparent and clear.

2. It must be slowly sifted into the mixing tank, do not directly add a large amount of hydroxyethyl cellulose that has formed lumps or balls into the mixing tank.

3. Water temperature and PH value in water have obvious relationship to the dissolution of hydroxyethyl cellulose, so special attention must be paid.

4. Do not add some alkaline substances to the mixture before the hydroxyethyl cellulose powder is warmed by water. Raising the PH value after warming will help dissolve.

HEC uses:

1. It is generally used as a thickener, protective agent, adhesive, stabilizer, and additive for the preparation of emulsions, jellies, ointments, lotions, eye cleaners, suppositories and tablets, and is also used as a hydrophilic gel and skeleton Materials, preparation of matrix-type sustained-release preparations, and can also be used as a stabilizer in food.

2. Used as a sizing agent in the textile industry, and as an auxiliary agent for bonding, thickening, emulsifying, and stabilizing in the electronics and light industry sectors.

3. It is used as thickener and fluid loss reducer for water-based drilling fluid and completion fluid, and the thickening effect is obvious in brine drilling fluid. It can also be used as fluid loss reducer for oil well cement. It can be cross-linked with polyvalent metal ions to form a gel.

4. This product is used as a dispersant for the polymerization of petroleum water-based gel fracturing fluid, polystyrene and polyvinyl chloride, etc. by fracturing. It can also be used as an emulsion thickener in the paint industry, a hygrostat in the electronics industry, a cement anticoagulant and a moisture retention agent in the construction industry. Ceramic industry glazing and toothpaste binder. It is also widely used in printing and dyeing, textiles, papermaking, medicine, hygiene, food, cigarettes, pesticides and fire extinguishing agents.