Functions of HPMC/HEC in Building Materials
Hydroxypropyl Methylcellulose (HPMC) can be divided into the products with surface treatment (cold-water dispersing type) and those without surface treatment (ordinary type).
In order to meet the needs of green and environmental protection, our company has specially developed and produced products in such brands as MC, Hydroxypropyl MethylCellulose powder, and Hydroxyethyl Cellulose, with high water-retention rate, good free-flowing property, fineness, good workability, convenience for dissolution and other features. It can apply to dry-mixed mortar, interior and exterior waterproof putty powder (paste), adhesive agents, joint mixture, interfacial agents, water-based paint, self-leveling agent, gypsum plaster and other new-type building materials. In the building materials like cement and gypsum, cellulose ether is an essential additive. The addition of MC, HPMC, and HEC helps to improve the following properties.
A. Water-Retaining Property
Hydroxypropyl MethylCellulose can enhance the water-retaining property and improve the bad hardening and cracking tendencies of cement and gypsum building materials resulting from drying quickly and short of water.
Hydroxypropyl MethylCellulose can enhance the plasticity of mortar and improve the workability and efficiency in construction projects.
C. Adhesive Property
Hydroxypropyl MethylCellulose can make mortar better attach to base material since the plasticity of mortar is enhanced.
D. Slip Resistance
Hydroxypropyl MethylCellulose can prevent slipping problem between mortar and the base material in construction projects as a result of its thickening effect .
The product should be packed in double bags, with an inner layer of polyethylene film bag and outer layer of coated woven bag, each containing 25kg net.
Keep the product away from moisture and water; don’t place together with other chemicals.