What is HPMC? hypromellose

2022-03-12

HPMC is the English abbreviation of Hydroxypropyl Methyl Cellulose, also known as methylhydroxypropyl cellulose. It is a synthetic chemical compound obtained from natural cellulose fibers through a series of chemical treatments.
HPMC has many excellent properties and a wide range of applications:

1. Water solubility: HPMC can quickly dissolve in water to form a colloidal and dense solution, which is very easy to mix with water. Therefore, it is widely used in water-based coatings, cement mortars, building materials and other fields.

2. Surfactant: HPMC contains hydroxyl and methoxy groups in its molecular structure, which gives it its function as a surfactant. It can form a protective layer on the interface and improve the stability and wettability of the material.
3. Thickening: HPMC has good thickening properties and plays a role in increasing viscosity and improving rheology in paints, glues and other fluids.

4. Adhesion: HPMC has good adhesion in paint, wall caulking, putty and other materials, which can enhance the adhesion of materials and improve durability.

5. Moisture retention: HPMC can absorb and retain moisture, and can form a water-retaining layer in materials such as wall coatings and cement mortars to reduce water evaporation and improve construction performance and durability of the coating.

6. Crack resistance: As an additive, HPMC can increase the toughness and elasticity of materials such as paint and putty, and reduce the risk of cracks and cracking.
HPMC is widely used in construction, coatings, medicine, food and personal care and other fields. In the construction industry, it is often used in exterior wall coatings, interior wall coatings, tile adhesives, cement mortars, putties and other building materials to improve the rheological properties of materials, enhance adhesion, improve crack resistance and provide good construction performance . Among other areas, it is also used in the manufacture of products such as pharmaceuticals, medical supplies, food emulsifiers and cosmetics.