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This article mainly describes the four production technologies and formulas of HPMC. Hydroxypropyl Methylcellulose (HPMC) or Hypromellose is a water-soluble non-ionic cellulose ether polymer. With good performance of thickening, dispersion, emulsification, suspension, adsorption, surface activity,

1. How to choose a suitable hydroxypropyl methylcellulose (HPMC) for different purposes?

In dry mix mortar, adding a little HPMC can significantly improve the performance of wet mortar. It can be seen that HPMC is a major additive that affects the construction performance of mortar.

In recent years, with the continuous development of external wall insulation technology, the continuous progress of cellulose production technology, and the excellent characteristics of HP cellulose itself, HP cellulose has been widely used in the construction industry.

Viscosity is an important parameter of HPMC performance. At present, different HPMC manufacturers use different methods and instruments to determine the viscosity of HPMC. The main methods are HaakeRotovisko, Hoppler, Ubbelohde and Brookfield.

The cold water instant type of hydroxypropyl methyl cellulose HPMC is surface-treated with glyoxal, and it is quickly dispersed in cold water, but it is not really dissolved. When the viscosity rises, the aqueous solution becomes clear. The hot melt type is not surface treated with glyoxal.

HPMC (Hydroxypropyl methylcellulose) is generally used in putty powder with a viscosity of 100,000 mPa.s(NDJ), while mortar requires a relatively high viscosity and should be selected with a viscosity of 150,000mPa.s to achieve the desired effect. The most important role of HPMC is water retention and thickening secondly. Therefore, in putty powder, it is okay […]

The use of cellulose ether HPMC in external thermal insulation mortar: cellulose ether plays a role of bonding and increasing strength in this material. The sand will be easier to coat, improve work efficiency, and have the effect of anti-sagging. Higher water retention performance can extend the working time of the mortar, improve shrinkage resistance and crack resistance, improve surface quality, and increase bonding strength.

1. What are the main uses of hydroxypropyl methylcellulose (HPMC)? HPMC is widely used in construction materials, coatings, synthetic resins, ceramics, pharmaceuticals, food, textile, agriculture, cosmetics, tobacco and other industries. HPMC can be divided into construction grade, food grade and pharmaceutical grade according to its usage. Currently, most Chinese domestic production is at the construction […]