Hydroxypropyl Methylcellulose (HPMC) is a non-ionic cellulose ether widely used in construction, pharmaceutical, food, daily chemical and other industries. According to its viscosity, HPMC can be divided into low viscosity, medium viscosity and high viscosity grades. Among them, HPMC with a viscosity of 200000 mPa·s belongs to the high viscosity grade, has excellent consistency, film-forming and water retention properties, and has unique application value in many fields.
1. Basic characteristics
High viscosity HPMC (200000 mPa·s) is made from natural polymer cellulose and is modified by etherification. Its appearance is usually white or off-white powder with good fluidity and easy dispersibility. This type of HPMC can be quickly dispersed in cold water to form a transparent or translucent viscous solution. Its viscosity value refers to the dynamic viscosity measured in a 2% aqueous solution at 20°C, reaching 200000 mPa·s, showing extremely high consistency and rheological properties.
2. Main performance
Excellent water retention
High viscosity HPMC has strong water absorption and water retention capacity, especially in building materials, it can effectively prevent water from evaporating too quickly, and avoid cracking and strength loss caused by water loss.
Thickening and lubricity
HPMC with a viscosity grade of 200000 has a significant thickening effect, and even if the addition amount is low, it can significantly increase the viscosity of the solution or system. At the same time, it has good lubricity and construction properties, making the paint, putty and mortar smoother and easier to operate during the construction process.
Good film-forming property
This type of HPMC can form a tough, flexible and transparent film after drying, which helps to improve the wear resistance and adhesion of the coating.
Strong chemical stability
HPMC is a non-ionic polymer, which is relatively stable to acids and alkalis and is not easy to react with other chemical components, which makes it have good compatibility in complex formulas.
3. Application field
Construction industry
High viscosity HPMC is widely used in building materials such as dry mortar, tile adhesive, thermal insulation mortar, putty powder, etc. Its thickening and water retention functions can significantly improve construction performance, enhance adhesion and anti-slip properties.
Pharmaceutical industry
As a drug controlled release matrix and capsule shell material, high viscosity HPMC can be used as the main component of sustained-release preparations to prolong drug release time and improve bioavailability.
Food industry
Used as an emulsifier, stabilizer, suspending agent and thickener in food, such as in low-fat foods and baked products to improve texture and taste.
Daily chemical field
HPMC is used as a thickener and stabilizer in shampoo, facial cleanser, and lotion to improve product appearance and feel.
4. Usage and precautions
When using high viscosity HPMC, it should be slowly added to water at room temperature and dispersed while stirring to avoid agglomeration. After the dispersion system is formed in the initial stage, it needs to be left to stand for full hydration to eventually form a viscous and transparent colloidal solution. HPMC should not be mixed with strong acids and alkalis to prevent its molecular structure from being destroyed. In addition, the storage environment should avoid humidity and high temperature to prevent the product from agglomerating due to moisture and affecting performance.
High viscosity 200000 HPMC has become an indispensable functional material in many industries due to its excellent performance and adaptability in multiple fields. With the advancement of technology and the expansion of market demand, its application scope will be further expanded. Mastering its performance characteristics and correct use methods will better exert its effectiveness and significantly improve product quality and production efficiency.
Post time: Apr-25-2025