The main effect of HPMC on mortar construction

For modern building mortar, it is required to have suitable construction consistency and water retention, delay the loss of water in the mortar, prolong the operation time and open time (opening time), enhance wet viscosity and cohesion after setting and hardening, and crack resistance , the addition of SLEOCHEM’s cellulose ethers makes meeting these requirements a breeze. No matter in alkaline cement, lime system or neutral gypsum mortar system and in mortar system without cementitious material, cellulose ether can build up the required viscosity and consistency, moisturizing and mixing process of mortar with water. Wetting, sag resistance, slipperiness, etc., thus endow the mortar with perfect construction performance.

Component dispersion uniformity. Mainly improve the following performance:

Suspension stability

The increase in the viscosity and consistency of the mortar makes the particles of each component in the mortar suspend and disperse evenly and stably. For fluid mortar, the choice of low-viscosity cellulose ether can ensure that the suspension stability of the fluid mortar is increased without affecting the fluidity of the mortar, and the problem of bleeding and sedimentation of the mortar can be avoided.

Lubricity

Hydroxypropyl methylcellulose 9004 65 3 can increase the viscosity of the slurry, and air is brought into the mortar to form uniformly distributed micro-bubbles during the stirring process. The unique surface activity of cellulose ethers can increase the ability of mortar to form micro-bubbles. The appropriate viscosity of cellulose ether can maintain the stable existence of microbubbles. Introducing and maintaining an appropriate amount of micro-bubbles in the mortar slurry is like a ball bearing, which makes the mortar on the one hand pump, spray, spread, spread and smooth the mortar with elasticity; on the other hand, it can ensure that the mortar is applied, In the process of finishing and modeling, the spatula is not sticky (does not follow the knife), which greatly reduces the labor intensity of workers and easily obtains the surface effect required by the mortar, which is very important for putty, finishing mortar, and carving mortar.

Water Retention

HPMC 9004-65-3 enhances the ability of hydrophilic and water-locking through the adjustment of chemical structure such as etherification group and degree of etherification, so it has excellent ability to retain water, which can ensure that the water will not be absorbed by the mortar after it is applied to the wall. The substrate absorbs immediately, which ensures the construction properties of the mortar such as coating, carding, and finishing. Generally speaking, the water retention of cellulose ether is positively related to its viscosity and addition amount. The water retention of the mortar itself is related to the application thickness of the mortar layer. The mortar applied on the substrate will emit moisture into the air and be absorbed by the substrate. To determine the economical amount of cellulose ether added, the mortar layer should be considered. The influence of the application thickness, the water absorption of the substrate, and the construction environment on the water loss, so as to obtain an economical addition amount on the basis of ensuring the construction performance.

Wetting and Adhesion

SLEOCHEM HPMC (Hydroxypropyl Methyl Cellulose) can reduce the surface tension of the mortar, making the mortar very easy to spread and spread on the surface of various substrates. Wetting is the premise of bonding, and good wetting performance can better ensure the wet adhesion of mortar and various substrates and the exertion of later strength.

Excellent sag and sag resistance

The use of SLEOCHEM cellulose ether, HPMC, HEMC, HEC, etc., can give the mortar higher yield strength without affecting the sprayability and spreadability of the mortar. Even if it is sprayed or smeared very thickly at one time, it will not flow and slip; for tile adhesive, it can ensure that large-size or heavy-weight tiles do not slip. For the engraving mortar, its excellent formability can give the mortar good moldability.