Hydroxypropyl MethylCellulose (HPMC)

Hydroxypropyl methyl cellulose (HPMC) has excellent thickening and can be used as an excellent concrete anti-dispersant. HPMC has been widely used in the construction industry. Anti-dispersion test Anti-dispersant is an important technical index to measure the quality of anti-dispersant.

HPMC is a water soluble polymer compound, also known as water soluble resin or water soluble polymer, is to increase the consistency of the mixing water by increasing the viscosity of the mixture, is a hydrophilic polymer material, can dissolve in water and form a solution or dispersion. It can be seen that when the amount of naphthalene series efficient water reducing agent increases, the incorporation of water reducing agent will reduce the anti-dispersion of newly mixed cement mortar.

This is because the naphthalene system efficient water reducing agent belongs to the surfactant, when the water reducer added to the mortar, water reducing agent in the surface of the cement particles surface with the same charge, the electric repulsion makes the cement particles form flocculation structure is separated, the water released in the structure, will cause part of the loss of cement water. At the same time, with the increase of HPMC mixing, the dispersion of new cement mortar is better and better.