Views: 29 Author: Yida Cellulose Publish Time: 21-07-2022 Origin: Site
Gypsum retarder is a common additive in gypsum-based building materials, which can effectively prolong the construction open time. Most common retarder in gypsum has three types: organic acids and their soluble salts, alkaline phosphates and special retarders such as proteins. The organic acids and their soluble salts are mainly citric acid, sodium citrate, tartaric acid, potassium tartrate, acrylic acid and sodium acrylate, etc. Among them, citric acid and its salts are the most studied and the most effective. Citric acid and its salts can achieve a strong retardation effect when the dosage is very small.
Gypsum plaster retarder ingredients are not used, the effect is differen.Under the same dosage, the strength loss rate of citric acid and sodium polyphosphate is much higher than that of protein. With the increase of dosage, the strength loss rate of citric acid and sodium polyphosphate shows a linear upward trend. The retardation time is similar, and the strength loss rate is nearly 4 times higher than that of proteins. Adding appropriate amount can be made into gypsum mortar, plastering gypsum, bonding gypsum, caulking gypsum and other gypsum products. Obtain an effective setting delay, thereby creating better conditions for construction.
When it comes to construction chemicals, many people will immediately think of industrialized countries like the United States and Germany. It has to be admitted that Germany has a leading position in the field of chemicals. But this does not mean that all chemicals have to be purchased in Germany. As a professional manufacturer of gypsum retarder, Yida gypsum retarder from China has reached the world's top level, with an annual output of 100,000 tons, stable product quality and low price.
There are many components of gypsum retarder, such as: gluconate, hydroxycarboxylate, inorganic salt, phosphate, lignosulfonate and so on. Each product has its own advantages and disadvantages. Compared with citric acid, Hebei Yida's gypsum retarder has less effect on the strength of gypsum and can reduce the amount of gypsum.
YIDA is currently the world's top construction chemical manufacturer, with more than 80,000 square meters of factory buildings and more than 500 employees. The gypsum retarder produced by YIDA has high purity, good delay effect and low price, and is sold to more than 40 countries and regions around the world. We can send you free samples for testing.