As the surface treated hydroxyethyl cellulose is a powder or cellulose solid, it is easy to operate and dissolve it in water as long as the following matters are noted.
1. Before and after adding hydroxyethyl cellulose, it must be continuously stirred until the solution is completely transparent and clear.
2. It must be slowly sieved into the mixing drum. Do not add large quantities of hydroxyethyl cellulose or directly into the mixing drum.
3. Water temperature and PH value in water have obvious relationship with the dissolution of hydroxyethyl cellulose, and special attention should be paid.
4. Never add some alkaline substances into the mixture before the hydroxyethyl cellulose powder is soaked by water. It is helpful to improve the PH value after warm penetration.
5. Antimildew agent shall be added as early as possible.
6. When using high viscosity type HEC, the concentration of the mother liquor should not be higher than 2.5-3%, otherwise the mother liquor is difficult to operate. Hydroxyethylcellulose after post-treatment is generally not easy to form blocky or globular, and will not form insoluble globular colloid after adding water.
