HPMC hydroxypropyl methyl cellulose manufacturer producer factory supplier exporter
What is the main use of HPMC?
HPMC can be divided into: construction grade, food grade and medical grade by use.
HPMC is widely used in building materials, coatings, synthetic resins, ceramics, medicine, food, textile, agriculture, cosmetics, tobacco and other industries.
At present, most of the domestic construction grade, in the construction grade, putty powder dosage is large, about 90% is used to make putty powder, the rest is used to make cement mortar and glue.
What are the main raw materials of HPMC?
HPMC main raw materials: refined cotton, chloromethane, propylene oxide. Other raw materials are, tablet alkali, acid, toluene, isopropanol and so on.
- HPMC is divided into several kinds, what are the differences in uses?
HPMC can be divided into instant and heat soluble type.
Instant products, in cold water quickly dispersed, disappeared in the water, at this time the liquid has no viscosity, because HPMC is just dispersed in the water, there is no real dissolution. About 2 minutes, the viscosity of the liquid slowly increases, forming a transparent viscous colloid. Wide application range, in putty powder and mortar, and liquid glue and paint, can be used, there is no taboo.
Hot soluble products, in cold water, can be quickly dispersed in hot water, disappear in hot water, when the temperature drops to a certain temperature, viscosity slowly appears, until the formation of transparent viscous colloid. Can only be used in putty powder and mortar, in liquid glue and paint, there will be a group phenomenon, can not be used.
What are the main technical indicators of HPMC?
Hydroxypropyl content and viscosity, most users are concerned with these two indexes.
Hydroxypropyl content is high, water retention is generally better.
Viscosity, water retention, relative (but not absolute) is also better, and viscosity, in cement mortar better use some.
How much viscosity is suitable for HPMC?
The most important role of HPMC is water retention, followed by thickening.
Putty powder is generally 100000 cps can be. As long as the water retention is good, the viscosity is low (70,000-80000), it is also possible, of course, the viscosity is larger, the relative water retention is better, when the viscosity is more than 100,000, the viscosity has little effect on the water retention.
The requirement in MORTAR IS some taller, WANT GENERALLY 150 THOUSAND just to be good to use.
Glue application: need instant products, high viscosity.
Post time: Apr-28-2024