From the water retention of HPMC, to distinguish the advantages and disadvantages of HPMC

The water retention of methyl cellulose ether at high temperature conditions is an important indicator to distinguish the quality of methyl cellulose ether. Air temperature, temperature and air pressure speed will affect the volatilization speed of water in cement mortar and gypsum-based products. So in different seasons, adding hydroxypropyl methyl cellulose with the same amount of product water retention effect has some differences. In the specific construction, the water retention effect of the slurry can be adjuste by increasing or decreasing the amount of hydroxypropyl methyl cellulose. HPMC

Excellent hydroxypropyl methyl cellulose series products can effectively solve the water retention problem at high temperature. In the high temperature season. Especially in the hot and dry areas and the thin layer construction of the sunny surface. High-quality hydroxypropyl methyl cellulose is need to improve the water retention of the slurry. HPMC

High-quality methyl cellulose can be evenly and effectively disperse in cement mortar and gypsum-based products. And wrap all the solid particles, and form a layer of wetting film. The moisture in the base is gradually release for a long time, and the inorganic adhesive material hydration reaction, so as to ensure the strong bonding of the material.Degree and compressive strength. HPMC

Therefore, in the high temperature summer construction. In order to achieve the effect of water retention. It is necessary to add high-quality hydroxypropyl methyl cellulose products according to the formula. Otherwise, there will be too fast drying cause by insufficient hydration, strength reduction, cracking, empty drum and falling off and other quality problems. But also increase the difficulty of workers construction. As the air temperature drops, the added amount of water hydroxypropyl. HPMC

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