English: Hydroxypropyl Methyl Cellulose Abbreviation: HPMC, MHPC
Alias: Hypromellose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose,
2-hydroxypropylmethyl ether. Cellulose hydroxypropyl methyl ether Hyprolose;
CAS number: [9004-65-3]
Hydroxypropyl methyl cellulose is made of highly pure cotton cellulose as raw material, and is prepared by special etherification under alkaline conditions. The whole process is completed under automated monitoring and does not contain any animal organs, oils and other active ingredients.
This product is a non-ionic cellulose ether, white powder in appearance, odorless and tasteless, soluble in water and most polar organic solvents and appropriate proportions of ethanol/water, propanol/water, dichloroethane, etc. Diethyl ether, acetone, and absolute ethanol are insoluble, and swell into a clear or slightly turbid colloidal solution in cold water. The aqueous solution has surface activity, high transparency and stable performance. HPMC has thermal gel properties. The product solution forms a gel after heating, and then dissolves after cooling. The gel temperature of products with different specifications is different. The solubility changes with the viscosity. The lower the viscosity, the greater the solubility. There are certain differences in the properties of different specifications of HPMC. The dissolution of HPMC in water is not affected by the pH value. Granularity: The pass rate of 100 mesh is greater than 100%. Bulk density: 0.25-0.70g/ (usually about 0.4g/), specific gravity 1.26-1.31. Discoloration temperature: 180-200ºC, carbonization temperature: 280-300ºC. HPMC has the characteristics of thickening ability, salt drainage, pH stability, water retention, dimensional stability, excellent film-forming properties, and wide range of enzyme resistance, dispersibility and adhesion.
|Gel Temperature (ºC)||58-64||62-68||68-75||70-90|
|Ash Content (%)||≤5|
|Moisture Content (%)||≤5|
|Partical Size||Mesh 80|
|Viscosity (NDJ-1) 2%solution,20ºC||400-200000|
Construction industry: As a water-retaining agent and retarder for cement mortar, the mortar can be pumped. In plastering, gypsum, putty powder or other building materials as adhesives, improve the daub and extend the operating time. Use as stickup ceramic tile, marble, plastic adornment, stickup aggrandizement agent, still can reduce cement dosage. HPMC water retention performance so that paste in the application will not dry too fast and crack, enhance the strength after hardening.
Ceramic manufacturing industry: widely used as adhesive in ceramic product manufacturing.
|Tile adhesive||Cement mortar||Crack|