china methyl cellulose and Hydroxypropyl Methyl Cellulose manufacturer
MC is methyl cellulose. after a series of reactions with refined cotton after alkali treatment with chlorinated methane as etherification agent, they made refined cotton in to cellulose ether methyl cellulose
(1) The water retention of methyl cellulose depends on following: added amount, viscosity, particle fineness and dissolution speed.generally, water retention will be higher if the add amount is higher, fineness is smaller,Among them, the addition amount has the greatest influence on the water retention rate, and the viscosity is not proportional to the water retention rate.methyl cellulose and hydroxypropyl methyl cellulose have higher water retention rates.
(2) Methyl cellulose is soluble in cold water, and it will be difficult to dissolve in hot water. Its aqueous solution is very stable in the range of pH=3~12. It has good compatibility with starch, guar gum, etc. and many surfactants. When the temperature reaches the gelation temperature, gelation will appear
(3) The change of temperature will seriously affect the water retention rate of methyl cellulose. Generally, the higher the temperature, the worse the water retention. If the mortar temperature exceeds 40℃, the water retention of methyl cellulose will be significantly worsened, which will seriously affect the workability of the mortar
(4) Methyl cellulose has a significant effect on the workability and adhesion of the mortar. The "adhesion" here refers to the adhesive force felt between the worker's application tool and the wall substrate, that is, the shear resistance of the mortar. The adhesion is large, the shear resistance of the mortar is large, and the force required by the workers in the use process is also large, and the workability of the mortar is poor. In cellulose ether products, the adhesion of methyl cellulose is at a medium level