Hydroxypropyl methylcellulose is an important raw material for building materials, and it is widely used because of its excellent water retention and thickening properties. An important indicator of hydroxypropyl methyl cellulose is its viscosity. The low-viscosity cellulose has 40,000 to 50,000, and the high-viscosity hydroxypropyl methyl cellulose has different viscosities such as 10W, 15W, and 20W. Many customers will ask us “How much is the amount of hydroxypropyl methyl cellulose?” The difference is that the amount of product used is different, and the amount of addition of different product characteristics fluctuates. The following introduces the amount of hydroxypropyl methylcellulose in various industries. The amount of base cellulose and the choice of viscosity.
Building mortar and plastering mortar: The high water retention of hydroxypropyl methylcellulose can fully hydrate the mortar, significantly increase the bonding strength, and at the same time, it can appropriately increase the tensile strength and shear strength, which greatly improves the construction effect and improves Work efficiency. Building mortar and plastering mortar hydroxypropyl methylcellulose can choose 10W viscosity, the general dosage of plastering mortar is 2kg.
Vitrified microbead insulation mortar: Vitrified microbeads have higher requirements for hydroxypropyl methylcellulose, 15W or 20W viscosity hydroxypropyl methylcellulose, if you choose too low viscosity, it is easy to cause sagging problems , The amount of hydroxypropyl methylcellulose added is 3kg.
Water-resistant putty: Putty hydroxypropyl methyl cellulose mainly plays a role in water retention, adhesion and lubrication in water-resistant putty, avoiding cracks and dehydration caused by too fast water loss, while enhancing the adhesion of the putty and reducing the sag during construction Phenomenon, the construction is relatively smooth. Water-resistant putty uses hydroxypropyl methylcellulose of about 10W, and the addition amount is 3-5kg.