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Hydroxypropyl methylcellulose, also called hpmc, is used in many industries and can be used as a variety of additives. Among them, hydroxypropyl methylcellulose is most commonly used in the construction industry. It has very good performance, good water retention, thickening, and construction performance. Let us focus on the water retention of hydroxypropyl methylcellulose:

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.

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.

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.

MC is methyl cellulose, which is made into cellulose ether by a series of reactions after the refined cotton is treated with alkali, using methyl chloride as the etherification agent. Generally, the degree of substitution is 1.6~2.0, and the solubility varies with the degree of substitution. Belongs to non-ionic cellulose ether.

When you produce and use putty, there will be various problems. Today we are talking to you that after you mix the putty powder with water, when you stir it with an electric drill, the putty will become thinner and the water will separate. Seriously, the root cause of this problem is the hydroxypropyl methyl cellulose added in the putty powder. Let us understand the principle of action together.

Speaking of hydroxypropyl methylcellulose, people first think of putty powder, mortar, tile glue, etc. Hydroxypropyl methylcellulose as an additive for putty powder, mortar, tile glue can improve construction performance and improve workability.

We all know that putty powder is made by mixing Calcium hydroxide powder,Calcium hydroxide powder, hydroxypropyl methylcellulose and water.

Many mortar and putty powder factories commonly use fire to detect hydroxypropyl methylcellulose, because this is the easiest and most convenient method. Here, SLEO Cellulose tells you that burning cellulose can only detect ash, not water retention.