What is the viscosity characteristic of hydroxypropyl methyl cellulose aqueous solution?
Hydroxypropyl methyl cellulose has a broad prospect in the construction industry, and its excellent thickening and water retention properties make its application in the construction industry can not be ignored. But how much do we know about its excellence? Now let's talk about the viscosity properties of hydroxypropyl methyl cellulose aqueous solution.
Hydroxypropyl methyl cellulose aqueous solution simple introduction: English abbreviation HPMC non-ionic, water-soluble cellulose ether, the appearance of white or light yellow powder or granular material. Its tasteless, odorless, non-toxic, stable chemical properties of the product in water to form a smooth slightly transparent viscous liquid.
What are the factors affecting the viscosity of hydroxypropyl methyl cellulose aqueous solution?
1. Relationship with polymer: the viscosity of hydroxypropyl methyl cellulose aqueous solution is proportional to the polymer or molecular weight, and increases with the improvement of polymerization degree. This effect is more obvious in the case of low polymerization than in the case of high polymerization.
2. Relationship between viscosity and concentration: the viscosity of hydroxypropyl methyl cellulose in aqueous solution increases with the concentration of aqueous solution, and even a small concentration change can cause a large change in viscosity.
3. The relationship between viscosity and shear rate: The test shows that hydroxypropyl methyl cellulose has no significant change at low shear rate, and the viscosity decreases with the increase of shear rate.
4. The relationship between viscosity and temperature: hydroxypropyl methyl cellulose is greatly affected by temperature, and the viscosity decreases with the increase of temperature.
5. Other factors: the viscosity of hydroxypropyl methyl cellulose and various additives, solutions, PH values also have an impact.
When we do the lab test thing we need know about the the viscosity characteristicof hydroxypropyl methyl cellulose aqueous solution?
Post time: Mar-25-2022