Will the water retention of hydroxypropyl methylcellulose be different in different seasons?
Will the water retention of hydroxypropyl methylcellulose be different in different seasons?
Cellulose ether hpmc has the function of water retention and thickening in cement mortar and gypsum-based mortar, which can effectively improve the adhesion and vertical resistance of mortar materials.
Factors such as gas temperature, temperature and air pressure rate have a detrimental effect on the rate of evaporation of moisture from cement mortar and gypsum based products. Therefore, there are some differences in adding the same amount of HPMC products to maintain water efficiency in each season.
In concrete pouring, the water locking effect can be adjusted by increasing and decreasing the fractional flow. The water retention rate of methyl cellulose ether at high temperature is the key index value to distinguish the quality of methyl cellulose ether.
High-quality
HPMC products can effectively solve the problem of high-temperature water locking. In high temperature seasons, especially in hot and humid areas and chromatography construction, high-quality HPMC is needed to improve the water retention of slurry.
High-quality HPMC is very well-proportioned, and its methoxyl and hydroxypropyl groups are evenly distributed on the molecular chain of cellulose, which can enhance the ability of oxygen molecules to form covalent bonds on hydroxyl and ether bonds.
It can effectively control the evaporation of water caused by hot weather and achieve a high water-locking effect. High-quality methylcellulose HPMC can be used in mixed mortar and plaster of paris crafts.
Encapsulate all the solid particles to form a moist film, and the moisture in the routine will be released slowly for a long time, and react with inorganic substances and collagen materials to ensure the bonding strength and tensile strength.
Therefore, in the hot summer construction site, in order to achieve the effect of water saving, we must add high-quality HPMC products according to the recipe, otherwise, it will be caused by lack of solidification, reduced strength, cracking, gas drum and other product quality problems. Causes dryness too quickly.
This also increases the difficulty of construction for workers. As the temperature decreases, the amount of HPMC added gradually decreases to achieve the same moisture content.
