Applications of HPMC in the Construction Industry for Enhancing Performance and Durability
1、Hydroxypropyl methyl cellulose can provide viscosity and can be used as anti-settlement additive.
2、Hydroxypropyl methylcellulose can enhance the flowability and pumpability, thus improving the floor efficiency.
3、Hydroxypropylmethylcellulose can control water holding capacity, thus greatly reducing cracking and shrinkage.
Cellulose ether has a slow setting effect on mortar. With the increase of cellulose ether content, the setting time of mortar is prolonged. The retarding effect of cellulose ether on cement slurry mainly depends on the degree of substitution of alkyl group, which is not much related to its molecular weight. The lower the degree of alkyl substitution, the higher the hydroxyl content, the more obvious the retarding effect. And the higher the content of cellulose ether, the more obvious the retarding effect of the composite film on the early hydration of cement. Therefore, the more significant the retarding effect is.