yuebaohpmc

In order to make better use of this product, we need to understand its related knowledge and performance. Today we will first understand how to test the viscosity of this product, please be sure Read it carefully. The viscosity mentioned here refers to the apparent viscosity, which is an important index of hydroxypropyl methyl cellulose . Common measurement methods include rotational viscosity measurement, capillary viscosity measurement, and falling autumn viscosity measurement. Previously, the measurement method of hydroxypropyl methylcellulose was capillary viscosity method, using a Ubbelohde viscometer. The measurement solution is usually a 2% aqueous solution with the formula: V = Kdt. V is the viscosity, the unit is mPa.s, K is the constant of the viscometer, d is the density at constant temperature, t is the time from the top to the bottom through the viscometer, the unit is second s. The operation is more tedious in this way. If there is insoluble matter, it is easy to cause er...

How to measure water retention of Hydroxypropyl Methyl Cellulose? As a more commonly used additive in dry powder mortar, hydroxypropyl methylcellulose plays an important role in it. Due to its own structural characteristics, it can also ensure that the water in the mortar will not be lost. This is its water retention. As one of the basic indicators of this additive, it is also important to do its detection work before using it. So what methods can help us? (1) Vacuum method This method refers to the industry standard JC / T517-2005 "Stucco Plaster", and the test method is to refer to the original Japanese standard (JISA6904-1976). During the test, the mortar mixed with water was filled into the Buchner funnel, placed on a suction filter bottle, the vacuum pump was started, and the vacuum filtration was performed under a negative pressure of (400 ± 5) mm Hg for 20 min. Then based on the amount of water in the slurry before and after suction filtration, calculate the water rete...

Hydroxypropyl methylcellulose is playing an important role. Let's take a brief look at it today. The wet mix mortar is cement, fine aggregate, additives and water, and various components are determined according to the properties. After the mixing is measured at the mixing station according to a certain ratio, the mixture is transported to the place of use by a mixing truck and placed in a special container for storage, and the wet mixture is used within the specified time. Mortar can be pumped using hydroxypropylmethyl cellulose as a water retention agent and retarder for cement mortar. In the mortar as an adhesive, in order to improve spreadability and prolong operation time, HPMC's water retention will not cause the slurry to crack due to drying too fast after coating, and it will increase the strength after hardening. Water retention is an important property of cellulose HPMC, and is also the performance of many wet-mixed mortar manufacturers in China. Factors affecting t...

I don't know if you know about it. As a kind of cellulose, Hydroxypropyl Methyl Cellulose plays a non-negligible role in people's daily production and life. Among them, its water retention effect is worthy of praise, then you know What methods can be used to effectively improve the water retention effect of cellulose? Hydroxypropyl Methyl Cellulose in dry powder mortar, the addition of cellulose ether is very low, but it can significantly improve the performance of wet mortar, which is the main additive that affects the construction performance. At present, the cellulose ether used in cellulose in dry powder mortar is mainly cellulose ether (HPMC). Cellulose mainly plays a role in water retention, thickening and improving construction performance in dry powder mortar. Hydroxypropyl Methyl Cellulose HPMC does not participate in any chemical reactions and is used only as a supplement. Putty powder adds water to the wall. This is a chemical reaction. As a new substance is formed,...

Regarding the hottest chemical products in life, first of all, it is necessary to pay more attention and attention to the most critical advantages and performances, so as to ensure the availability of this product more effectively. This is the case with propyl methyl cellulose products. Due to the considerable performance of this chemical product in terms of stable performance, it has also successfully attracted many operators to use it vigorously. Here we will take a look at it together. Hydroxypropyl Methyl Cellulose (HPMC)  is a non-toxic, odorless, white flocculent powder with stable performance and easy solubility in water. Its aqueous solution is a neutral or alkaline transparent viscous liquid, soluble in other water-soluble gums and resins, and insoluble. In organic solvents such as ethanol. Hydroxypropyl Methyl Cellulose (HPMC) can be used as a binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, etc. Hydroxypropyl Methyl Cellulose (HPMC) ...

Hydroxypropyl Methyl Cellulose , also known as hypromellose and cellulose hydroxypropyl methyl ether, is made from highly purified cotton cellulose as a raw material and specifically etherified under alkaline conditions. The main purpose: 1. Construction industry: As a water-retaining agent and retarder of cement mortar, it makes the mortar pumpable. Used as a binder in plaster, gypsum, putty powder or other building materials to improve application and prolong operation time. It can be used to paste ceramic tiles, marble, plastic decoration, paste reinforcement, and reduce the amount of cement. HPMC's water-retaining properties prevent the paste from cracking because it dries too quickly after application, enhancing the strength after hardening. 2. Ceramic manufacturing industry: widely used as a binder in the manufacture of ceramic products. 3. Coating industry: as thickener, dispersant and stabilizer in coating industry, it has good compatibility in water or organic solvents. As...