Method for measuring the gel temperature of hydroxypropyl methyl cellulose ether HPMC

The measurement of the hydroxypropyl methylcellulose gel temperature uses an instrument, volumetric flask: 250 mL; Nessler colorimetric tube: 100 mL; thermometer: 0.1°C division. Method for measuring the gel temperature of hydroxypropyl methylcellulose HPMC: Weigh 0.5g of the dry sample (accurately to 0.0002g) into a 500mL beaker, continue to heat up until the solution has just …

The effect of hydroxypropyl methylcellulose in gypsum mortar

Features of gypsum-based hydroxypropyl methylcellulose products: 1. Improve the coating rate of gypsum base: Compared with similar hydroxypropyl methyl cellulose ether, the coating rate is significantly increased. 2. Application field and dosage: Lightweight plastering plaster for the bottom layer, the recommended dosage is 2.5-3.5 kg/ton. 3. Superior anti-sagging performance: no sagging during single-pass construction when …

Introduction to the properties of hydroxypropyl methylcellulose

Hydroxypropyl methyl cellulose (HPMC), also known as hypromellose, cellulose hydroxypropyl methyl ether, is made by using highly pure cotton cellulose as raw material and specially etherified under alkaline conditions. Got. Hydroxypropyl methyl cellulose has thermal gel properties and is easily soluble in cold water, but it will be difficult to dissolve in hot water. But …

What is the difference between HPMC and MC?

MC is methyl cellulose, which is made into cellulose ether by a series of reactions after the refined cotton is treated with alkali, using methyl chloride as the etherification agent. Generally, the degree of substitution is 1.6~2.0, and the solubility varies with the degree of substitution. Belongs to non-ionic cellulose ether. (1) The water retention …

Hydroxypropyl methylcellulose for construction

 Properties of hydroxypropyl methylcellulose for construction is soluble in water and some organic solvents. It can be dissolved in cold water. Its highest concentration is only determined by the viscosity. The solubility changes with the viscosity. The lower the viscosity, the greater the solubility. Hydroxypropyl methyl cellulose for salt-resistant construction is a non-ionic cellulose ether …