gypsum retarder
NJ-803 is a high efficiency protein gypsum based retarder with the following characteristics:
It has very low dosage, excellent flow retention, can significantly prolong the setting time of gypsum, and has no adverse effect on strength.
It can be mixed with other additives and gypsum materials for a long time without changing its performance.
Suitable for systems such as gypsum based self-leveling, gypsum plaster mortar, gypsum board and other systems that need to control the setting time.
scope of application
Self-leveling gypsum base, joint-sealing gypsum, plaster mortar, plastering gypsum, gypsum board, gypsum components, gypsum adhesive, putty, gypsum masonry blocks, ceramic models
performance index
Homogeneity index | Product data |
apparent | Pale yellow powder |
Density, (kg/m3) | 400~500 |
pH value (1% aqueous solution) | 5.0~7.0 |
Fineness (200 mesh sieve residue),% | ≤3 |
Recommended dosage
The recommended dosage of this product in various systems is 0.2~1‰ of the system, which should be added according to the requirement of setting time, and the best dosage should be determined after test.
Packaging and storage
This product is wrapped in paper bags, 25kg/bag;
this product is not sensitive to temperature, but it is recommended that the storage temperature is 10~30℃;
store in a sealed storage, prevent moisture and pressure, and the storage time should not exceed 12 months.
technical support
- The company’s technical personnel provide consulting services in the preparation process of various formula systems;
- Technology tracking, in conjunction with the long-term optimization of the formulation system.