Hydroxypropyl methylcellulose (HPMC for short) is a semi-synthetic compound made from lignin through chemical reactions such as oxidation, methylation and hydroxypropylation. It is a water-soluble polymer compound that can form a colloidal solution in water. Due to its good water solubility, viscosity adjustment performance and degradation performance, HPMC is widely used in construction materials, cosmetics, food, medicine and other fields.
Performance
The following are common performance indicators of hydroxypropyl methylcellulose:
Viscosity: Viscosity is one of the most basic performance indicators of hydroxypropyl methylcellulose, which can affect its rheological properties and use effects in applications such as coatings and cement mortar.
Solid content: The solid content of hydroxypropyl methylcellulose can affect its use effect and cost. The common solid content is 4%-12%.
Thermal stability: The thermal stability of hydroxypropyl methylcellulose in high temperature environments can affect its stability in high temperature environments.
Water solubility: The water solubility of hydroxypropyl methylcellulose can affect its dispersibility and rheological properties in applications such as water-based paints and cement mortars.
pH value: The pH value of hydroxypropyl methylcellulose has a certain influence on its stability and use effect.
Degree of esterification and hydroxypropionation: The degree of esterification and hydroxypropionation of hydroxypropyl methylcellulose can affect its use and performance in different applications.
Water absorption: The water absorption of hydroxypropyl methylcellulose can affect its solubility and use effect in dry powder materials.
Rheological properties: The rheological properties of hydroxypropyl methylcellulose in coatings, adhesives and other applications can affect its compatibility with other materials and use effects.
Beichao reminds you: Different types of hydroxypropyl methylcellulose may need to be tested for their specific properties, and the specific test methods and instruments may also vary due to different types of hydroxypropyl methylcellulose.
