Gypsum Retarders

Gypsum Retarders
Product Description
Gypsum retarder is a high performance and environmentally friendly protein-
based retarder that can slow down the setting time of gypsum plaster. Even
applied with small amounts, our high-efficiency gypsum retarder produces
excellent retardation effects with minimal loss of gypsum strength. With good
adaptability to various gypsums, the addition of our products can help adjust
the setting time to meet the specific product and job needs and allow for
proper application and finishing. When employed together with our water-
reducing admixture, it can help adjust the setting time and gypsum plaster
consistency in a more effective way.
Gypsum retarder is mainly used to slow down the curing process of gypsum by
inhibiting the crystal growth and nucleation of gypsum. Commonly used gypsum
retarders are organic acid salts, phosphates, sulfates, etc. These compounds
can combine with Ca2+ ions in gypsum to hinder the growth and formation of
gypsum crystals, thus slowing down the curing process of gypsum.

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