On hydroxypropyl methyl cellulose HPMC comprehensive performance detailed

Hydroxypropyl methyl cellulose is a kind of additive, also known as HPMC, is a kind of English abbreviation, HPMC in all walks of life have applications, has the title of industrial monosodium glutamate, in industry, especially building materials industry has an indispensable role, and the amount is also very large, the cellulose can be used as a preservative, retarding agent, binder, thickening agent, Cellulose ether plays a vital role in ceramic tile bonding dry powder mortar, high performance building putty, anti-crack putty for inner and outer walls, ordinary dry mixed mortar, high efficiency external wall insulation mortar, waterproof dry mixed mortar, self-leveling mortar, dry powder plastering adhesive, plaster plaster, scraping and whitening agent, thin layer joints and other materials. It has an important influence on the water retention, water demand, firmness and durability, retarding and construction performance of the mortar system.

Hydroxypropyl methyl cellulose HPMC products integrate many chemical and physical properties, with multi-functional and multi-purpose unique products, comprehensive properties are as follows:

1, excellent water retention performance: for many building materials, especially the wall cement board, as well as brick holes and other porous surface, has excellent moisture retention.

2, good bonding performance: this performance is mainly used in pigment, tobacco products, paper products adhesive, with stable performance.

3, organic solubility: hydroxypropyl methyl cellulose is soluble in some organic solvents, such as the appropriate proportion of ethanol/water, propyl alcohol/water, dichloroethane and two kinds of organic solvent system, has a good organic solubility.

4, with good film formation: can form a transparent and tough film on the surface, but also has good anti-grease performance.

5, the surface activity is relatively stable: in the solution to provide surface activity, can achieve the required emulsification and protection of colloid, at the same time has a relatively stable role.

6, good water solubility: can be applied to different components of water, fast dissolution, its high concentration is only limited by viscosity.

7. Hot gelation: that is to say, when aqueous solution is heated, it will form a gel, and the gel formed will become a solution again after cooling.

8, with the protection of colloidal performance: can prevent droplets and particles coalescence or condensation.

9, no taste, tasteless and odorless, can not be affected by metabolism, commonly used as additives for drugs or instruments, will not be metabolized in food or drugs, and will not provide heat.

10, PH stable: suitable for PH3.0 to 11.0 range of use.

11, with suspension characteristics: can prevent solid material precipitation, so can inhibit the formation of sediment.

12, with non-ionic inertia: hydroxypropyl methyl cellulose is a non-ionic cellulose ether, will not be combined with metal salts or other ions to produce insoluble precipitation.