The choice of HPMC viscosity

Mostly in wall putty, we will generally suggest 100,000, mpa.s viscosity, but the mortar is required to be higher, it is necessary to use 150,000 mpa.s or more. Moreover, the most important role of hydroxypropyl methyl cellulose is to retain water, followed by thickening. In wall putty, as long as the water retention is good, the viscosity is lower (70,000-80,000 mpa.s), it is also possible. Of course, if the viscosity is larger, the relative water retention is better. When the viscosity exceeds 100,000mpa.s, the effect of viscosity on water retention is not too obviously.