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High-quality hydroxypropyl methyl cellulose can be uniformly and effectively dispersed in cement mortar and gypsum-based products, and wrap all solid particles, and form a layer of wetting film. The moisture in the base is gradually released over a long period of time.

Redispersible latex powder is usually white powder, and its composition mainly includes:

Nowadays, there are more and more hydroxypropyl carboxymethyl cellulose sales markets, and the prices are not balanced. How to easily and quickly determine the quality of hydroxypropyl methyl cellulose has long become a crucial issue! So how to judge the quality of hydroxypropyl methylcellulose?

Although there is only one word difference between putty powder and putty paste, there is also a big difference. Putty powder is a basic leveling material, while putty paste is a wall decoration material. One table and one lining play different roles. Function, the editor will analyze the difference between putty powder and putty paste for you below.

The use of mortar as an insulation material in building construction can improve the insulation performance of the outer wall insulation layer, reduce indoor heat loss, and avoid uneven heating between rooms, so it has been widely used in building construction.

1. The pure hydroxypropyl methyl cellulose HPMC looks fluffy and has a small bulk density, ranging from 0.3-0.4/ml; while the fake hydroxypropyl methyl cellulose has better fluidity and feels better It is heavy, which is significantly different from the original appearance.

Instant HPMC disperses quickly in cold water and disappears in the water. At this time, the liquid has no viscosity, because HPMC is only dispersed in water without real dissolution. In about 2 minutes, the viscosity of the liquid gradually increased, forming a transparent viscous colloid.

Generally, in the synthesis of hydroxypropyl methylcellulose, the refined cotton cellulose is treated with alkali solution at 35-40°C for half an hour, squeezed, the cellulose is crushed, and appropriately aged at 35°C, so that the resulting alkali fiber is averagely polymerized The degree is within the required range.

The first step in the production of redispersible polymer powders is the production of polymer dispersions, also known as emulsions or latexes.  the water-emulsified monomers (stabilized by emulsifiers or macromolecular protective colloids) react with initiators to start emulsion polymerization.