The advanges of HPMC & MHEC in dry mix mortar products
November 22nd 2024
Regarding the professional application method adopted by chemical products, it is necessary to attract the attention and attention of every operation operator, because this is the key to effective decision-making and the smooth completion of each construction project. If the method of making it is very likely to seriously affect the safe use of the product, for example, hydroxypropyl methylcellulose, which is currently very popular in various fields, let’s take a look at it together below.
The water retention of methylcellulose depends on its addition amount, viscosity, particle fineness and dissolution rate. Generally, if the addition amount is large, the fineness is small, and the viscosity is large, the water retention rate is high. Among them, the amount of addition has the greatest impact on the water retention rate, and the level of viscosity is not directly proportional to the level of water retention rate. The dissolution rate mainly depends on the degree of surface modification of cellulose particles and particle fineness. Among the above cellulose ethers, methyl cellulose and hydroxypropyl methyl cellulose have higher water retention rates.
Methylcellulose 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 occurs.
In terms of the correct use of hydroxypropyl methylcellulose we introduced to you above, it is necessary to attract the attention and attention of every operator, so as to better ensure the applicability of this chemical product.
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