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Three questions and three answers to hydroxypropyl methyl cellulose

2018-10-21 Hits:256

1, what are the main uses of hydroxypropyl methyl cellulose (HPMC)?

Answer: HPMC is widely used in building materials, coatings, synthetic resins, ceramics, medicine, food, textile, agriculture, cosmetics, tobacco and other industries. HPMC can be divided into building level, food grade and pharmaceutical grade. At present, most of the domestic building-grade, in the building-grade, putty powder consumption is very large, about 90% is used for putty powder, the rest is used for cement mortar and glue.

2, what are the main technical indicators of hydroxypropyl methyl cellulose (HPMC)?

Answer: hydroxypropyl content and viscosity, most users are concerned about these two indicators. Water with high hydroxypropyl content is generally better. Higher viscosity, water retention, relative (rather than absolute) is also better, and viscosity, in the cement mortar better use.

3, hydroxypropyl methyl cellulose (HPMC) is divided into several kinds. What are the differences in their uses?

Answer: HPMC can be divided into instant and hot-soluble, instant products, when cold water quickly dispersed, disappeared in the water, at this time the liquid has no viscosity, because HPMC is only dispersed in the water, no real dissolution. In about 2 minutes, the viscosity of the liquid becomes larger and larger, forming a transparent viscous colloid. Hot-soluble products, encountering cold water clumps, can quickly disperse in hot water, disappear in hot water, when the temperature drops to a certain temperature, viscosity slowly appears, until the formation of transparent viscous colloid. In this Zexu cellulose reminds us that heat-soluble mold can only be used in putty powder and mortar, in liquid glue and paint, there will be clumping phenomenon, can not be used. Instant type, a wide range of applications, putty powder and mortar, as well as liquid glue and paint, can be used, there is no taboo.