HPMC for Construction Mortar
Hydroxypropyl methyl cellulose (INN: Hypromellose), also simplified as hypromellose (hydroxypropyl methylcellulose, abbreviated as HPMC), is a species of non-ionic cellulose ether. It is a semi synthetic, inactive, viscoelastic polymer, often used as a lubricant in Ophthalmology, or as an adjunct or excipient in oral medicine. As a food additive, HPMC may play the following roles: emulsifier, thickener, suspending agent and substitute for animal gelatin.
Hydroxypropyl Methyl Cellulose is a natural polymer cellulose as raw material, made of a series of chemical processing and non-ionic cellulose ether. They are an odorless, tasteless non-toxic white powder in cold water swelling into a clear or slightly muddy colloid solution. A thickening, binding, dispersing, emulsifying, film, suspension, adsorption, gel, surface activity, such as maintaining water and protective colloid properties.
HPMC Physical & chemical properties:
1.Appearance:white or off-white powder,smelless and tasteless.
2.Particle size:the passage rate of 100 meshes is more than 98.5%;and of 80 meshes is 100%.
3.Bulk density:0.25-0.70g/cm3.
4.Soluble in water and some organic solvents,such as appropriate proportio of ethanol/water,acetone/water,and trichloroethane etc.Solution has surfactant peculiarity.PH value does not affect solubility in water.
The Application:
hpmc cellulose widely used in construction and building materials,Tile Adhesive,Cement Based Plaster,Exterior Heat Insulation System ( EIFS ),Self-leveling,Crack Filler,Gypsum Based Plaster
l. used as adhesives, thickeners, water-binding agents, emulsifiers, film-forming reagents, dispersing agents and stabilizers in the pharmaceutical industry
2. used as adhesive and water-binding agents in building industry.
3. used as thickeners, dispersing agents and stabilizers in paint, printing and ink industry.
4. used in plastic industry for forming release agents, softeners, lubricants and so on.
5. used in the leather and paper industries, fruit and vegetable fresh-maintaining and textile industry and so on.
Specifications
|
Items |
HPMC |
|
Methoxyl content (-OCH3) w/% |
20.0-28.0 |
|
Hydroxypropyl content (-OCH2CHOOHCH3),w/% |
5.0-11.0 |
|
Gelling temperature(°C) |
55-80 |
|
Moisture content, w/% |
MAX 1% |
|
Residue on ignition, w/% |
MAX 1.5% |
|
Lead(Pb), ppm |
MAX 2 |
|
Arsenic (As), ppm |
MAX 2 |
|
Heavy metal |
MAX 20 |
|
Viscosity (mpa.s) |
5-200000 |
