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Generally the viscosity is proportional to the water retention viscosity under 100,000.but viscosity more than 100,000 water retention rate basically does not increase.so not viscosity more quality better.

It depends on your usage

RDP has extremely outstanding bonding strength, improve the flexibility of mortar and have a long opening time, give the mortar excellent alkaline resistance, improve the mortar adhesion, flexural strength, water resistance, plasticity, wear resistance and construction, in the flexible anti-crack mortar more has a strong flexibility.

Hydroxypropyl methyl cellulose is generally used in degreasing coating/wall putty with a viscosity of 100,000, while cement mortar has relatively high requirements for viscosity, and it is better to choose a viscosity of 150,000. The most important role of hydroxypropyl methyl cellulose is water retention, followed by thickening.

In ready-mixed mortar, the addition of cellulose ether is very low, but it can significantly improve the performance of wet mortar, which is a major additive affecting the construction performance of mortar. the important role of HPMC in mortar is mainly in three aspects, one is the excellent water retention capacity, the second is the effect on mortar consistency, and the third is the interaction with cement.

In the mortar why people on water retention requirements are so high, water retention good mortar has what outstanding advantages, let me introduce to you, the importance of mortar water retention.

High water retention can make cement fully hydrated, significantly increase bond strength, and can appropriately improve tensile strength and shear strength, greatly improve the construction effect, improve work efficiency.

With the development of modern building constructions, cellulose ether is being widely used in cement products. Cellulose ether is formed by the etherification of cellulose or one or more etherifying agents and dry grinding. SLEO cellulose ether products include HPMC,and HEMC, multi-purpose additives widely used in cement products. Factors related to the properties of cellulose ethers are becoming a hot topic in the industry.

With the active development of the ceramic tile industry, ceramic tiles of various textures, materials, and specifications emerge in an endless stream. However, no matter how beautiful the tiles are, if the wrong materials are selected, the effect will not last. For the performance requirements of tile adhesive materials, the most important thing is the adhesion and the durability of the bonding.

What are the differences between tile adhesive and tile adhesive on the back?