The production process of hydroxypropyl methylcellulose is mainly a polysaccharide-based ether product produced by alkalinisation and etherification of cotton fibres (domestic). It is not charged itself and does not react with the charged ions in the gelling material, making it stable.
The price is also lower than other types of cellulose ethers, so it is mainly used in the construction industry: water-resistant putty powder, putty paste, tempering putty, paint glue and dry powder building materials such as masonry plastering mortar and dry powder insulation mortar.
The role of hydroxypropyl methyl cellulose(HPMC) in mortar
1.Hydroxypropyl methyl cellulose ether has excellent water retention properties and is widely used in a variety of mortars, including masonry mortars, plastering mortars and floor levelling mortars, to improve the water retention of mortars.
2.Hydroxypropyl methyl cellulose ether has a significant thickening effect, improving the construction performance and compatibility of the mortar, changing the fluidity of the product to achieve the desired appearance, and increasing the fullness of the mortar and the volume used.
3.Hydroxypropyl methyl cellulose ether can improve the adhesion and workability of the mortar, overcome the common problems of shelling and drumming of ordinary mortar, reduce falling material, save material and reduce costs.
4.Hydroxypropyl methyl cellulose ether has a certain retarding effect, which can ensure the operability of the mortar and improve the plasticity and construction effect of the mortar.
5.Hydroxypropyl methyl cellulose ether can introduce the right amount of air bubbles, which can greatly improve the frost resistance of the mortar and increase the durability of the mortar.
Cellulose ether is a combination of physical and chemical effects to play a role in water retention and thickening, and can produce substances that cause micro-expansion properties during hydration, thus making the mortar have certain micro-expansion properties, preventing the mortar from cracking due to shrinkage in the later hydration process and improving the service life of the building.
Landcel’s HPMC can better enhance the performance of mortars and supports the customisation of viscosity grades for different types of mortar additions. Please contact us if you would like to discuss your requirements.