Application of hydroxypropyl methylcellulose in gypsum-based self-leveling mortar.
1. Introduction Gypsum-based self-leveling mortar is a building material widely used in the construction industry, with excellent performance and wide application prospects. However, its liquidity and stability have always been the focus of attention. In this article, we will introduce a new type of additive, hydroxypropyl methylcellulose (HPMC), and its application in gypsum-based self-leveling mortars. Low-viscosity hydroxypropyl methylcellulose
2. Characteristics of hydroxypropyl methylcellulose.
Hydroxypropyl methylcellulose is a white or yellowish powder with the following properties:
1.Thickening: HPMC can significantly increase the viscosity and yield stress of gypsum-based self-leveling mortars, improving their flowability.
2.Water retention: HPMC is able to absorb and retain moisture, control the curing process of gypsum-based self-leveling mortar, and improve its strength and stability after curing.
3.Crack resistance: HPMC can enhance the toughness of gypsum-based self-leveling mortar and prevent it from cracking during use.
4.Environmental protection: HPMC is a natural cellulose, biodegradable, in line with environmental protection requirements.
3. Application of hydroxypropyl methylcellulose in gypsum-based self-leveling mortar.
The addition of hydroxypropyl methylcellulose to gypsum-based self-leveling mortars can significantly improve their properties. Specifically, it is manifested in the following aspects:
1.Fluidity: The addition of HPMC can increase the viscosity of gypsum-based self-leveling mortar, making it have better fluidity during construction. At the same time, the water retention of HPMC can also prevent the segregation of mortar during transportation and construction.
2.Curing time: HPMC can control the curing time of gypsum-based self-leveling mortar, so that it can cure quickly under the appropriate temperature and humidity conditions, and improve the construction efficiency.
3.Strength and stability: The reinforcing effect of HPMC can improve the strength and stability of gypsum-based self-leveling mortar, so that it has better performance during load bearing and use.
4.Durability: HPMC can enhance the durability of gypsum-based self-leveling mortar, making it have good anti-aging performance and weather resistance during use.
IV. Conclusions. As a new type of additive, hydroxypropyl methylcellulose has a wide application prospect in gypsum-based self-leveling mortar. Its thickening, water retention, crack resistance and environmental protection can significantly improve the performance of gypsum-based self-leveling mortar, and improve its construction efficiency and service life. With the rapid development of the construction industry, the application of hydroxypropyl methyl cellulose in gypsum-based self-leveling mortar will have a broader market prospect.