1. Plastering Mortar for High-Absorption Substrates High-absorption substrates are typically represented by aerated concrete, and also include various lightweight partition boards, blocks, and similar materials. These substrates are characterized by rapid water uptake and prolonged absorption duration. For plastering mortars applied to such substrates, the following requirements should be met: Hydroxypropyl Methylcellulose (HPMC) water retention: […]
Hydroxypropyl methylcellulose (HPMC) dissolves readily in cold water, whereas dissolution in hot water presents difficulties. However, its gelation temperature in hot water is significantly higher than that of methylcellulose. Furthermore, its solubility in cold water represents a substantial improvement compared to methylcellulose. HPMC exhibits stability against acids and alkalis; its aqueous solution remains highly stable […]
The water retention of hydroxypropyl methylcellulose (HPMC) products can be affected by the following four factors, detailed below for reference only: 1. Viscosity Affects the Water Retention of Hydroxypropyl Methylcellulose When the viscosity of hydroxypropyl methylcellulose increases, its water retention rate also increases. However, once the viscosity reaches a certain level, the rate of increase […]
The wide application of hydroxypropyl methylcellulose (HPMC) is primarily due to its excellent water retention. The quality of HPMC directly affects its overall quality. The water retention performance of hydroxypropyl methylcellulose ether under hot and high-temperature conditions is one of the indicators for judging the quality of cellulose ethers. Humidity, temperature, wind speed, and wind […]
