(HPMC)Characteristics of hydroxypropyl methylcellulose products specially used for buildings

Solust in water and some organic solvents can be dissolve in cold water, its highest concentration is only determined by the viscosity. The solubility changes with the viscosity, the lower the viscosity, the greater the solubility.HPMC

Salt resistance: the special hydroxypropyl methyl cellulose for construction is non-ionic cellulose ether. And it is not a polymeric electrolyte, so in the presence of metal salt or organic electrolyte, it is relatively stable in the aqueous solution. But the excessive addition of electrolyte, can cause gel and precipitation.HPMC

Surface activity: Because the aqueous solution has the surface activity function. It can be use as a colloidal protective agent, emulsifier and dispersant.

Thermal gel construction special hydroxypropyl methyl cellulose water solution when heated to a certain temperature. Becomes opaque, gel, forming precipitation, but in continuous cooling, is restore to the original solution state. And the temperature of the gel and precipitation mainly depends on their lubricant, help suspension agent, protective colloid, emulsifier, etc.HPMC

Mbiotic resistance: good mildew resistance, good viscosity stability in long-term storage.

PH stability: the viscosity of the hydroxypropyl methylcellulose water solution specially use for construction is almost not affecte by acid or base. And the PH value is relatively stable in the range of 3.0 to 11.0. Shape retention Because the highly concentrated aqueous solution of the special hydroxypropyl methylcellulose for the building has a special viscoelastic energy compare with the aqueous solution of other polymers. Its addition has the ability to improve the unchanged shape of the extrusion ceramic products.

Water retention: the building special hydroxypropyl methyl cellulose has the hydrophilic nature and the high viscosity of its aqueous solution. Which is a high efficiency water retention agent.

Other characteristics: thickener, film-forming agent, adhesive, lubricant, auxiliary levitation agent, protective colloid, emulsifier, etc.


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