Hydroxypropyl methylcellulose HPMC properties

Commonly used cellulose ethers include HEC, HPMC, CMC, PAC, MHEC and the like. Non-ionic water-soluble cellulose ether has adhesiveness, dispersion stability and water retention capacity, and is a commonly used additive for building materials. HPMC, MC or EHEC are used in most cement-based or gypsum-based constructions, such as masonry mortar, cement mortar, cement coating, gypsum, cementitious mixture, and milky putty, etc., which can enhance the dispersibility of cement or sand and greatly improve the Adhesion, which is very important for plaster, tile cement and putty. HEC is used in cement, not only as a retarder, but also as a water-retaining agent. HEHPC also has this application.

Hydroxypropyl methylcellulose HPMC products combine many physical and chemical properties into unique products with a variety of uses and properties:

Water retention: It can retain water on porous surfaces such as wall cement boards and bricks.

Film-forming: It can form a transparent, tough and soft film with excellent grease resistance.

Organic solubility: The product is soluble in some organic solvents, such as appropriate proportions of ethanol/water, propanol/water, dichloroethane and a solvent system composed of two organic solvents.

Thermal gelation: When an aqueous solution of a product is heated, a gel will form, and the formed gel will turn back into a solution when cooled.

Surface activity: Provides surface activity in solution to achieve the required emulsification and protective colloids, as well as phase stabilization.

Suspension: Hydroxypropyl methylcellulose prevents solid particles from settling, thus inhibiting the formation of sediments.

Protective Colloids: Prevent droplets and particles from coalescing or coagulating.

Water Soluble : The product can be dissolved in water in different quantities, the maximum concentration being limited only by the viscosity.

Non-ionic inertness: The product is a non-ionic cellulose ether that does not combine with metal salts or other ions to form insoluble precipitates.

Acid-base stability: suitable for use in the range of PH3.0-11.0.

Post time: Sep-22-2022