Views:3 Author:Site Editor Publish Time: 2019-12-19 Origin:Site
HPMC:It is an important variety of nonionic cellulose mixed ether. It is odorless, tasteless and non-toxic. The finished product is white powder or loose fiber, and the particle size is passed through the 80-mesh sieve. It doesn't react with heavy metals. Different proportions of methoxy and hydroxypropyl content in the finished product, different viscosity, will become a variety of different properties. HPMC is actually a kind of epoxy methane oxygen c ring (methyl) modified methyl cellulose, so it has a similar methyl cellulose soluble in cold water can dissolve, can not soluble in hot water features, solubility in organic solvent is better than that of water soluble, it can soluble in anhydrous methanol and ethanol, can also dissolve in chlorinated hydrocarbons, such as methylene chloride, trichloroethane, acetone, isopropyl alcohol, diacetone alcohol and other organic solvents.
HPMC is a highly pure cotton cellulose as raw material, under alkaline conditions by special etherification and preparation.White or whitish powder.HPMC decreases with the decrease of methoxide content, increase of gel point, decrease of water solubility and decrease of surface activity.HPMC has thickening ability, salt resistance, low ash powder, pH stability, water retention, dimensional stability, excellent film forming, and a wide range of enzyme resistance, dispersion and adhesion.Therefore, for cement and plaster based motors, will be your best choice. It's white or off-white powder ,non-toxic tasteless, and readily soluble in hot or cold water. HPMC also used for ceramics, tobaccos and detergents, etc.
Hydroxypropyl methyl cellulose is divided into two kinds of ordinary hot soluble cold water instantly soluble. Hydroxypropyl methyl cellulose uses are 1, Gypsum series In the gypsum series of products, cellulose ethers are mainly used to retain water and increase smoothness. Together they play a cer
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