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Shandong Dazhan Hongrui Fine Chemical Co., Ltd
Gypsum Retarder
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◉ Product Parameters

Principles:

Our retarder reduces the solubility of hemihydrate gypsum and slows down the dissolution rate of hemihydrate gypsum. The retarding ions are adsorbed on the surface of dihydrate gypsum crystals and combine these ions into the crystal to form a complex, it limits the diffusion of the example to the vicinity of the dihydrate gypsum crystal, thereby delaying the setting time of gypsum plaster

Specifications :

Item Testing

Gypsum-based products

Appearance

slightly yellow powder

Odor

slight protein smell or tasteless

Fineness:

≧95% (200 M)

Initial Agglomeration Time

6-18 mins (without gypsum retarder)


Suggested dosage(kg/T).


Model  Ⅰ

0.6-1.0%

With the above-mentioned dosage, solidifying time will be retarded for about 1.5 hours

Model  Ⅱ

1.0-1.5%

Model  Ⅲ

1.5-3.0%

RE: Experiment according to the type of gypsum and auxiliary materials, and the specific amount of addition is subject to the test data

Stability:

This retarder is compatible with hydroxypropyl methylcellulose, starch ether, latex powder, superplasticizer, etc., it has good dispersibility, water solubility,  and controllable gel time under control  meets construction requirements

Application:

It can be used for natural gypsum, desulfurized gypsum, phosphogypsum, and fluoro gypsum.The setting time of building gypsum after mixing with water is mostly 6-18 minutes(without gypsum retarder).

This retarder is suitable for plaster products such as plastering plaster, machine-sprayed plaster, gypsum-based self-leveling, gypsum putty, bonding plaster, and prefabricated gypsum components.

Storage: moisture-proof, store in a cool and dry place, open the bag and not use it, it should be sealed again, and the stacking time should not exceed 8 bags;

Shelf life:  12 months

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