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YIDA LEAD
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Product Name：Gypsum retarder
Appearance：Powder
Water content /%：5 or less
Water solubility：soluble
Color：Smell Light yellow, no odor
Fineness：100-150 mesh
pH Value：7-9
Density of volume：0.30 0.40 g/ml
Gypsum mortar
Bonded gypsum
Caulking plaster
Gypsum block
Gypsum wall board
Gypsum powder
YIDA LEAD® Gypsum Retarder is a very professional chemical agent with good adsorption performance,chemical performance and precipitation performance. With proper addition, Gypsum mortar, whitewash Gypsum, bonding Gypsum, caulk Gypsum and other Gypsum products can achieve effective setting delay, thus creating better conditions for construction.
(1) The retarder with the selected dosage must be evenly mixed with gypsum powder or the retarder must be completely dissolved in water before the gypsum powder is added
(2) According to the initial setting time of gypsum powder itself, the amount of gypsum retarder should be added if the initial setting time is long; otherwise, the amount of retarder should be reduced
(3) The amount of gypsum retarder is decided according to the proportion of gypsum powder in gypsum mortar. If the proportion of gypsum powder is large, the amount of retarder should be added, otherwise the amount of retarder should be reduced
(4) The amount of gypsum retarder should be added according to the required operation time of gypsum mortar. If the operation time is long, the amount of retarder should be added; otherwise, the amount of retarder should be reduced
Yida can make the best use of retarder according to your gypsum powder products.
HPMC hydroxypropyl methyl cellulose is usually used in gypsum mortar to improve the performance of gypsum products. Our gypsum specific modified HPMC also has excellent properties.
25kg double lined packing, user can specify the packing.
It should be stored in a cool and dry place, slightly hygroscopic, and must be well protected from moisture and high temperature to avoid clumping or caking.
If the product is not used up, the packaging must be tightly sealed to prevent the intrusion of moisture in the air.
A1: Gypsum Retarder is an additive used to slow down the setting time of gypsum. It is primarily employed in the production of gypsum-based building materials such as plastering gypsum, bonding gypsum, gypsum putty, and gypsum products.
A2: The main types of Gypsum Retarder include organic acids and their soluble salts (e.g., citric acid, sodium citrate, tartaric acid, potassium tartrate, acrylic acid, and sodium acrylate), alkaline phosphates (e.g., sodium hexametaphosphate, sodium polyphosphate), and protein-based retarders. Among them, citric acid and its salts are the most studied and effective, requiring only small doses to achieve significant retarding effects.
A3: The incorporation of Gypsum Retarder can affect the strength of gypsum to some extent. Generally, as the dosage of retarder increases, the strength of gypsum (both dry and wet strength) tends to decrease. For example, the strength reduction is more pronounced with citric acid compared to polyphosphate and borax at the same dosage. Proper dosage control is crucial to balance retarding effects and strength requirements.
A4: Here are some key usage recommendations for Gypsum Retarder:
Dosage: Typically, the dosage of Gypsum Retarder in hemihydrate gypsum ranges from 0.03% to 0.5%, depending on specific needs and gypsum type.
Mixing: Ensure even mixing to avoid localized high or low concentrations.
Temperature Consideration: As ambient temperature increases, the dosage of Gypsum Retarder may need to be adjusted appropriately.
Compatibility: Different types of Gypsum Retarder may be more suitable for specific gypsum products and applications. It is recommended to conduct trials before use.
Storage: Store Gypsum Retarder in a dry, cool, and well-ventilated area to maintain its stability and activity.
Product Name：Gypsum retarder
Appearance：Powder
Water content /%：5 or less
Water solubility：soluble
Color：Smell Light yellow, no odor
Fineness：100-150 mesh
pH Value：7-9
Density of volume：0.30 0.40 g/ml
Gypsum mortar
Bonded gypsum
Caulking plaster
Gypsum block
Gypsum wall board
Gypsum powder
YIDA LEAD® Gypsum Retarder is a very professional chemical agent with good adsorption performance,chemical performance and precipitation performance. With proper addition, Gypsum mortar, whitewash Gypsum, bonding Gypsum, caulk Gypsum and other Gypsum products can achieve effective setting delay, thus creating better conditions for construction.
(1) The retarder with the selected dosage must be evenly mixed with gypsum powder or the retarder must be completely dissolved in water before the gypsum powder is added
(2) According to the initial setting time of gypsum powder itself, the amount of gypsum retarder should be added if the initial setting time is long; otherwise, the amount of retarder should be reduced
(3) The amount of gypsum retarder is decided according to the proportion of gypsum powder in gypsum mortar. If the proportion of gypsum powder is large, the amount of retarder should be added, otherwise the amount of retarder should be reduced
(4) The amount of gypsum retarder should be added according to the required operation time of gypsum mortar. If the operation time is long, the amount of retarder should be added; otherwise, the amount of retarder should be reduced
Yida can make the best use of retarder according to your gypsum powder products.
HPMC hydroxypropyl methyl cellulose is usually used in gypsum mortar to improve the performance of gypsum products. Our gypsum specific modified HPMC also has excellent properties.
25kg double lined packing, user can specify the packing.
It should be stored in a cool and dry place, slightly hygroscopic, and must be well protected from moisture and high temperature to avoid clumping or caking.
If the product is not used up, the packaging must be tightly sealed to prevent the intrusion of moisture in the air.
A1: Gypsum Retarder is an additive used to slow down the setting time of gypsum. It is primarily employed in the production of gypsum-based building materials such as plastering gypsum, bonding gypsum, gypsum putty, and gypsum products.
A2: The main types of Gypsum Retarder include organic acids and their soluble salts (e.g., citric acid, sodium citrate, tartaric acid, potassium tartrate, acrylic acid, and sodium acrylate), alkaline phosphates (e.g., sodium hexametaphosphate, sodium polyphosphate), and protein-based retarders. Among them, citric acid and its salts are the most studied and effective, requiring only small doses to achieve significant retarding effects.
A3: The incorporation of Gypsum Retarder can affect the strength of gypsum to some extent. Generally, as the dosage of retarder increases, the strength of gypsum (both dry and wet strength) tends to decrease. For example, the strength reduction is more pronounced with citric acid compared to polyphosphate and borax at the same dosage. Proper dosage control is crucial to balance retarding effects and strength requirements.
A4: Here are some key usage recommendations for Gypsum Retarder:
Dosage: Typically, the dosage of Gypsum Retarder in hemihydrate gypsum ranges from 0.03% to 0.5%, depending on specific needs and gypsum type.
Mixing: Ensure even mixing to avoid localized high or low concentrations.
Temperature Consideration: As ambient temperature increases, the dosage of Gypsum Retarder may need to be adjusted appropriately.
Compatibility: Different types of Gypsum Retarder may be more suitable for specific gypsum products and applications. It is recommended to conduct trials before use.
Storage: Store Gypsum Retarder in a dry, cool, and well-ventilated area to maintain its stability and activity.
