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As an indispensable environmental-friendly additive in various fields, cellulose ether is often referred to as "industrial monosodium glutamate", which has excellent solution thickening properties, good water solubility, suspension or latex stability, film-forming properties, water retention, and adhesion. It is non-toxic and odorless, and is widely used in many fields such as building materials, medicine, food, textiles, daily chemicals, oil exploration, mining, papermaking, polymerization and aerospace.

The viscosity of HPMC is inversely proportional to the temperature, that is, the viscosity increases with the decrease of temperature. The viscosity of a product usually refers to the test result of its 2% aqueous solution at 20 ℃.

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HPMC with uniform reaction, methoxy and hydroxypropyl groups are uniformly distributed, and the water retention rate is high.

Excellent temperature stability: As a non-ionic thickener, the viscosity of HPMC-thickened surfactant system is relatively stable with temperature changes, while the system adding Nacl as a thickener will have a jelly phenomenon at low temperatures.

HPMC cellulose is a synthetic polymer chemically modified from natural cellulose. It is composed of part of the hydroxypropylmethyl (Hypromellose) groups in the natural polymer chain of cellulose. This compound is a white to off-white powder with good solubility in water to form a transparent colloidal solution.

1. The visual state of pure HPMC is fluffy and the bulk density is small, ranging from 0.3-0.4g/ml; the adulterated HPMC has better fluidity and heavier hand feel, which is obviously different from the original appearance.

In ready-mixed mortar, the addition amount of HPMC is very low, but it can significantly improve the performance of wet mortar and is a major additive that affects the construction performance of mortar. Reasonable selection of cellulose ethers of different varieties, different viscosities, different particle sizes, different viscosity degrees and added amounts will have a positive impact on improving the performance of dry mortar.

Hydroxypropyl methylcellulose is used as a water-retaining agent in cement mortar and retarder for mortar pumping.

Interior wall putty powder generally has a viscosity of 100,000. Cement mortar has higher requirements for adjustment, and a viscosity of 150,000 is easy to use. In addition, the most critical function of HPMC is to lock in water, followed by thickening.

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​Hydroxypropyl Methyl Cellulose (hereinafter referred to as HPMC) can be divided into instant type and slow-soluble type. Instant hydroxypropyl methylcellulose HPMC refers to the surface treatment using cross-linking agent during the production process, so that HPMC can be dissolved in cold water.