methyl hydroxy ethyl cellulose-How to judge methyl hydroxy ethyl cellulose from water retention
From the water retention of methyl hydroxy ethyl cellulose, it can distinguish the advantages and disadvantages of methyl hydroxy ethyl cellulose. The water retention of methyl cellulose ethers under high temperature conditions is the key objective for different quality of methyl cellulose ethers. Factors such as gas temperature, temperature and wind pressure speed will affect the volatilization rate of water in cement mortar and gypsum-based products. Therefore, in different seasons, the water retention function of the product with the same amount of methyl hydroxy ethyl cellulose is a little different.
In the specific construction site, the amount of methyl hydroxy ethyl cellulose can be adjusted to adjust the water retention function of the slurry. Excellent methyl hydroxy ethyl cellulose products can effectively deal with water retention problems at high temperatures. In high-temperature seasons, especially in hot, dry and boring areas and thin-layer construction on the sunny side, high-quality methyl hydroxy ethyl cellulose is required to develop the water retention of the slurry.
High-quality methyl hydroxy ethyl cellulose can be uniformly and usefully dispersed in cement mortar and gypsum-based products, and encapsulate any solid particles, and form a layer of moist film, the water in the base gradually gradually When released, it hydrates with the inorganic cementing material and ensures the bonding strength and compressive strength of the material.
Therefore, in the high temperature summer construction site, in order to achieve the water retention function, it is necessary to fill in the high-quality methyl hydroxy ethyl cellulose product in sufficient quantity according to the formula, otherwise, it will be boring and too fast, resulting in insufficient hydration and reduced strength Quality problems such as, cracking, hollowing and falling are also difficult to fill and process. As the temperature drops, the amount of methyl hydroxy ethyl cellulose can be gradually reduced, and the same water retention function can be achieved.