Hydroxyethyl cellulose (HEC) is a white or pale yellow, tasteless, non-toxic fibrous or powdered solid, prepared by alkaline cellulose and ethylene oxide (or chloroethanol) by etherification reaction, belongs to non-ionic soluble cellulose ethers.
HEC, coating, coating, construction, medicine, food, textile, paper and polymer polymerization has been widely used in thickening, suspension, dispersion, emulsification, adhesion, film formation, protecting water and providing protective colloids.
40 Visual screening rate + 99%; softening temperature: 135-140 C; performance density: 0.35-0.61g/m1; decomposition temperature: 205-210C Slow combustion speed: balanced temperature content: 23C; 6%84%rh. Hydroxyethyl cellulose, as a nonionic surfactant, has the following properties besides thickening, suspension, adhesion, floating, film formation, dispersion, water retention and providing protective colloids.
1. HEC is soluble in hot water or cold water, high temperature or boiling does not precipitate, so that it has a wide range of soluble and viscosity characteristics, and non-thermal gel;
2. Its non-ionic type can coexist with other water-soluble polymers in a large range, surfactants and salt, and it is an excellent colloidal thickener agent containing high concentration of electrolyte solution;
3. The dispersion ability of HEC is the worst compared with the recognized methylcellulose and hydroxypropyl methylcellulose, but it has the strongest ability to protect colloids.
Added directly during production
1. Add clean water to the large bucket of the mixer.
2 Start stirring at low speed and slowly sieve hydroxyethyl cellulose into the solution.
4. Then add lightning protection agent, alkaline additives, such as pigments, dispersing additives, ammonia water.
5. Stir until all hydroxyethylcellulose is completely dissolved (the solution viscosity increases significantly) before adding other components in the formula and grind until formed So far.