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The viscosity of hydroxypropyl methylcellulose HPMC is inversely proportional to the temperature, that is, the viscosity increases as the temperature decreases. We usually say that the viscosity of hydroxypropyl methylcellulose HPMC refers to the test result of hydroxypropyl methylcellulose HPMC at a temperature of 20% in a 2% aqueous solution.

Especially in summer, construction is very frequent in this season, and there is a large demand for cellulose. Manufacturers must also do a good job of moisture-proof storage while mass production. When storing cellulose in summer, we should pay attention to moisture prevention,

You may be unfamiliar when it comes to hydroxypropyl methyl cellulose, but when it comes to cement, mortar, and concrete, everyone is familiar with it. Hydroxypropyl methyl cellulose is an important additive in cement, mortar, and concrete. Let’s take a look at hydroxypropyl. What are the effects of methyl cellulose on the properties of cement, mortar and concrete.

The most important characteristic of hydroxypropyl methylcellulose is its water retention capacity in building materials. Maintain sufficient water in the mortar for a long time to meet the workability, and water also plays a role of lubrication and mixing in the inorganic composition. In this way, the thin layer mortar is easy to be combed or the plaster mortar is easy to be leveled repeatedly. In addition, due to the addition of cellulose in the mortar, the wall does not need to be wetted, so it can be constructed more efficiently.

Hydroxypropyl methylcellulose is easily soluble in cold water, but hot water will dissolve it. However, its gelation temperature in hot water is significantly higher than that of methyl cellulose. The dissolution in cold water is also much better than methyl cellulose.

Putty powder is generally 100,000 yuan, but the mortar is more demanding, and it takes 150,000 yuan to work. Moreover, the most important role of HPMC is water retention, followed by thickening. In putty powder, as long as the water retention is good and the viscosity is lower (70,000-80,000),

In the ready-mixed mortar, the addition amount of HPMC is very low, but it can significantly improve the performance of the wet mortar and is a major additive that affects the construction performance of the mortar.

Let’s first analyze the common quality problems of redispersible latex powder, as well as the common methods and harms of poor manufacturers to reduce costs:
How to distinguish or distinguish the quality of redispersible latex powder? To find a way, start with analysis:

The film of redispersible latex powder is elastic and tough, and it is in the rigid framework formed by the hydration of cement mortar. Between cement mortar particles and particles, it has a function similar to a movable joint, which can withstand high deformation loads, reduce stress, and improve tensile and bending resistance.