Hydroxyethyl Methylcellulose (HEMC) is widely used in the building materials industry and is used in large amounts. Cellulose ether can be used as a retardant, water-retaining agent, thickener and binder. Cellulose ether plays an important role in ordinary dry mixed mortar, exterior wall insulation mortar, self-leveling mortar, plastering adhesive mortar, ceramic tile bonding mortar, putty powder, interior and exterior render, waterproof mortar, thin-layer joints and other materials. They have an important effect on the water retention, water requirement, solidity, retardation and workability of the dry mix mortar system.

Hydroxyethyl Methylcellulose (HEMC) is generally used in the production of interior and exterior wall putty powder with a viscosity of 100,000. Cellulose ether with a viscosity of 200,000 is commonly used in tile adhesives, plaster, masonry mortar, Cellulose ether with a viscosity of 400 is commonly used in self-leveling. This product has good water retention effect, good thickening effect and stable quality.

Hydroxyethyl Methylcellulose (MHEC) products combine many physical and chemical properties to become unique products with multiple uses. The various properties are as follows:

Water retention, film formation, organic solubility

thermal gelation, surface activity suspension

Protective colloid, adhesive, water soluble

Non-ionic, acid-base stable, tasteless and odorless

Application of Hydroxyethyl Methylcellulose (HEMC) in spray mortar

Let’s talk about the entire construction process of spray mortar: mixing, pumping and spraying.

First of all, we need to ensure that the compound additives for spray mortar are mainly used to optimize the quality of the mortar on the basis of reasonable formula and qualified raw materials. This is mainly to improve the pumping performance of the mortar.

Therefore, under normal circumstances, spray mortar composite additives are composed of water-retaining agents and pumping agents. Hydroxyethyl Methylcellulose (HEMC) can not only increase the viscosity of the mortar, but also improve the fluidity of the mortar, thereby reducing the occurrence of segregation and bleeding. When workers design composite additives for spray mortar, they need to add some stabilizers in time to slow down the delamination of the mortar.

Compared with the traditional mortar mixed on site, spray mortar mainly introduces  Hydroxyethyl Methylcellulose (HEMC) which plays a role in optimizing the performance of the mortar and directly promotes the efficiency of the newly mixed mortar. The water retention rate will also become higher and it will have good working performance. The best thing about it is its high construction efficiency and good quality of mortar after molding, which can well reduce the occurrence of hollowing and cracking.