Construction Chemical Thickener CMC

Carboxymethyl Cellulose (CMC for short) is an anionic water-soluble cellulose ether, which is made by alkalization and etherification modification of natural cellulose. Construction-grade CMC features excellent thickening, water retention, bonding and suspension properties, and is widely used in dry-mixed mortar, putty powder, tile adhesive and other building materials fields, significantly improving construction performance and finished product quality.

Application scenarios in the field of architecture

Putty powder

Function: Thicken and retain water, improve the smoothness of application, and reduce powder shedding during grinding.

Recommended addition amount: 0.1% - 0.3% (by weight of dry powder).

Tile adhesive

Function: Enhance adhesion, extend open time, and prevent tile slippage.

Recommended addition amount: 0.2% - 0.5%.

Gypsum-based mortar

Function: Regulate the setting time, reduce bubbles, and improve surface finish.

Self-leveling mortar

Function: Control fluidity and prevent bleeding and stratification.

Usage suggestions

Dissolution method

Dry-mixing method: Pre-mix with fillers (such as cement, quartz sand), and then add water and stir.

Pre-sol method: Slowly add CMC to cold water and stir until a transparent colloid is formed (avoid direct pouring to prevent caking).

Construction environment

The recommended temperature range is 5 to 40 degrees Celsius. Avoid excessive exposure to high temperatures and direct sunlight to prevent rapid evaporation of moisture.

Common Problem Solving

Agglomeration: Ensure that the stirring speed is ≥800 rpm, or switch to the pre-solubilization method.

Insufficient viscosity: Check the purity of CMC or increase the addition amount.