Hydroxypropyl methyl cellulose ether (HPMC) has the function of water retention and thickening in cement mortar and gypsum-based mortar, and 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, in each season, there are some differences in adding the same amount of hydroxypropyl methylcellulose ether (HPMC) products to maintain water efficiency.
In concrete pouring, the water locking effect can be adjusted by increasing and decreasing the fractional flow. The water retention rate of hydroxypropyl methyl cellulose ether at high temperature is the key index value to distinguish the quality of hydroxypropyl methyl cellulose ether.
High-quality hydroxypropyl methylcellulose (HPMC) products can effectively solve the problem of high-temperature water retention. In high temperature seasons, especially in hot and humid areas and chromatography construction, high-quality hydroxypropyl methylcellulose ether (HPMC) is needed to improve the water retention of the slurry.
High-quality hydroxypropyl methylcellulose ether (HPMC) is very well-proportioned, and its methoxyl and hydroxypropyl groups are evenly distributed on the molecular structure chain of methylcellulose, which can promote the generation of oxygen molecules on hydroxyl and ether bonds. The ability to work with covalent bonds.
It can effectively control the evaporation of water caused by hot weather and achieve a high water-locking effect. High-quality hydroxypropyl methylcellulose (HPMC) can be used in mixed mortar and plaster 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 organic matter and collagen to ensure the bonding strength and tensile strength.
Therefore, in order to save water on the construction site in hot summer, we must add high-quality hydroxypropyl methylcellulose (HPMC) products according to the recipe, otherwise, it will be due to lack of coagulation, reduced strength, Cracking, gas drum and other product quality problems caused by too fast drying.
This also increases the difficulty of construction for workers. As the temperature decreases, the amount of hydroxypropyl methylcellulose ether (HPMC) gradually decreases to achieve the same moisture content.