Why add hydroxypropyl methyl cellulose in mortar?
Hydroxypropyl methylcellulose (
HPMC) is a kind of non-ionic cellulose ether prepared by a series of chemical processing from natural high molecular material refined cotton.Mainly used in construction industry: water-resistant putty powder, putty paste, toughened putty, coating glue and masonry plaster mortar, dry powder insulation mortar and other dry powder building materials.
Hydroxypropyl methylcellulose (
HPMC) ether with good performance can significantly improve the construction performance, pumping and spraying performance of mortar, and is an important additive in mortar.
1, hpmc cellulose ether has excellent water retention performance, widely used in various mortars, including masonry mortar, plastering mortar and ground leveling mortar, to improve the bleeding of mortar.
2, hpmc cellulose ether has significant thickening effect, improve the construction performance and workability of mortar, change the flow of products, achieve the desired appearance effect, improve the full mortar and use volume.
3, hpmc cellulose ether because it can improve the viscosity and operability of mortar, overcome the common problems of ordinary mortar, such as shell, empty drum, reduce the fall, save materials, reduce costs.
4, hpmc cellulose ether has a certain retarding effect, can ensure the operating time of mortar, improve the plasticity of mortar and construction effect.
5, hpmc cellulose ether can introduce appropriate amount of bubbles, can greatly improve the frost resistance of mortar, improve the durability of mortar.
6, cellulose ether is a combination of physical and chemical action to play the role of water retention and thickening, in the hydration process can produce the material that causes micro-expansion performance, so that the mortar has a certain micro-expansion performance, to prevent the mortar in the late hydration process caused by shrinkage cracking, improve the service life of the building.
