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1. Air-entraining. Hydroxypropyl methyl cellulose ether hpmc has strong air-entraining properties, while hydroxypropyl starch ether has no air-entraining properties.

Extract 2.0g of hydroxypropyl methylcellulose HPMC sample dried to constant weight into a beaker, add 98ml of 80~90℃ hot water to make a 2.0% (g/g) solution, stir for about 20min, then put in ice Cool in the bath for 50min, continue to mix during the cooling process, remove air bubbles,

The wet-mixed mortar is cement, fine aggregate, additives and water, and various components are determined according to the performance. After measuring and mixing in a certain proportion at the mixing station, the mixture is transported to the place of use in a special container for storage, and the wet mix is ​​used within the specified time.

1. The redispersible latex powder affects the strength of the putty powder. Adding the redispersible latex powder to the putty powder and mortar can increase its strength, and it has a great help in improving the hardness.

Adding hydroxypropyl methylcellulose to cement can slow down the hydration of cement. So what do you know about its principle? Let’s take a look at hydroxypropyl methyl cellulose to delay the hydration of cement. principle.

The redispersible latex powder is usually white powder, and the redispersible latex powder is usually white powder. But there are a few other colors. Ingredients include: polymer resin: located in the core part of the rubber powder particles, and is also an important component of the redispersible latex powder to play a role.

Hydroxypropyl content and viscosity, most users care about these two indicators. The higher the hydroxypropyl content, the better the water retention. Viscosity is higher, water retention is relatively (rather than absolute) is better, and viscosity is higher, it is better used in cement mortar.

The viscosity of hydroxypropyl methylcellulose HPMC, which we usually say, refers to the result of its 2% aqueous solution at a temperature of 20 degrees Celsius. The viscosity of hydroxypropyl methyl cellulose is mainly divided into four categories: low viscosity, medium and low viscosity, medium viscosity and high viscosity. Different viscosities have different uses.

The shallow admixture, which plays a key role in improving the performance of building dry-mix mortar, accounts for more than 40% of the material cost in dry-mix mortar. Most additives in the domestic market are supplied by foreign manufacturers, and the reference dosage of products is also provided by the suppliers.