The advanges of HPMC & MHEC in dry mix mortar products
November 22nd 2024
It is well known that the change of hydroxypropyl methyl cellulose purity can be adjusted from the washing process, so how to control the production of hydroxypropyl methyl cellulose viscosity?
Usually the HPMC of hydroxypropyl methyl cellulose viscosity, purity and a wide range of requirements.Also replace the level, according to the application needs of the product.The viscosity has a certain influence on the gel temperature: the viscosity is low, the gel temperature is high;High viscosity, low gel temperature.Other indicators are the same, the purity of the product also has a certain impact on the gel temperature, high salt content, the gel temperature of the product will be reduced.
Add antioxidant, improve viscosity can use high degree of polymerization of hydroxypropyl methyl cellulose raw materials.Vacuumize and exhaust the air, charge nitrogen for protection, and also improve the viscosity of the product by micro-crosslinking the final product.Reduce the viscosity of hydroxypropyl methyl cellulose, can use low degree of polymerization of cellulose raw materials, alkalization process or etherification process to add oxidant, can also be through radiation viscosity.
Tags:
