With the increase of temperature, the water retention of hydroxypyl methylcellulose ether decreases, and the fineness also requires 20% to 60% of the particle size less than 63um, and the surface immediately dissolved to form a gel to wrap the material to prevent water molecules from continuing to penetrate, but in the application of actual data, MC requirements for dry mortar is powder. The better the water retention effect, now different HPMC manufacturers choose different methods and instruments to determine the viscosity of HPMC.
Hydroxypropyl methylcellulose as a cement mortar water retention agent and retarder, it makes the mortar can be pumped. Used as an adhesive in stucco, plaster, putty powder or other building materials to improve spreadability and extend service time. It can be used as emulsifier, binder, thickener and stabilizer in the food industry. Products can also be used as packaging materials for direct application in food, can also be used in petrochemical, paste tile, marble, building materials plastic decoration, paste reinforcement, and reduce cement consumption. The water-retaining property of hydroxypropyl methylcellulose can prevent the slurry from drying too fast after application and rupture, and enhance the strength after hardening.
Various problems can occur when you produce and use putty. Today, we will talk about mixing putty powder with water, mixing with an electric drill, putty will become thin, water will separate the problem. The root cause of this problem is the addition of hydroxypropyl methylcellulose in putty powder. What should we pay attention to after adding hydroxypropyl methylcellulose?