Hot water dissolution method:because HPMC does not dissolve in hot water,HPMC can be evenly dispersed in hot water in the initial stage,and then rapidly dissolved when cooled.Two typical methods are described as follows:
1)Put the required amount of hot water in the container and heat to about 70 degrees Celsius.Hydroxypropyl methylcellulose was gradually added under slow stirring,and the HPMC began to float on the surface of the water,and then gradually formed a slurry,which was cooled under stirring.
2)1.Add 1/3 or 2/3 of the required amount of water into the container and heat to 70℃,disperse HPMC according to the method of 1)to prepare hot water slurry;Then add the remaining amount of cold water to the hot water slurry,stir and cool the mixture.
Powder mixing method:HPMC powder is fully mixed with a large number of other powdery ingredients in a blender,and then dissolved with water.At this time,HPMC can be dissolved without agglomeration,because there is only a little HPMC powder in each tiny corner,which will dissolve immediately in water——Putty powder and mortar manufacturers use this method.[hydroxypropyl methylcellulose(HPMC)is used as thickener and water retaining agent in putty powder mortar.
冀ICP備2023042114號-1 
