Gypsum Retarder (Powder)
Guudpoly Powder form gypsum retarder is a water-borne, vegetable protein-based, high-efficiency additive designed to precisely delay the setting time of gypsum products with minimizing effect to the final strength. serving as a sustainable alternative to animal protein and synthetic retarders.
Related Product & Application
Vegetable Protein vs Animal Protein
Sustainability & ethics: – Plant sources are renewable, cruelty-free, and have lower carbon footprint; animal protein relies on slaughterhouse by-products.
Consistency & odor: – Vegetable protein has uniform peptide chains, no putrid odor, and better batch-to-batch stability; animal protein may vary in quality and smell.
Safety & hygiene: – Lower risk of pathogens or contaminants; ideal for food-contact or indoor-sensitive applications.
Stable supply: – Plant raw materials are more abundant globally.
🌱 Core Advantages
Eco-friendly & Sustainable:– made from renewable plant sources, it is cruelty-free, biodegradable, and has a much lower carbon footprint than animal-protein or synthetic retarders. No unpleasant odor and non-toxic, ideal for green building and indoor use.
Linear & Predictable Setting Control:– Low dosage (0.05%–0.2% by weight of gypsum) delivers linear, proportional extension of setting time. It allows precise tuning of open time from 30 minutes to several hours with consistent, batch-stable performance.
Minimal Strength Loss:– Forms a protective colloidal film on gypsum crystals without altering crystal morphology. It slows hydration while preserving long-term strength—far better than citric acid or phosphate retarders that weaken gypsum noticeably.
Excellent Compatibility & Stability:– Fine, free-flowing powder disperses easily in dry gypsum mixes or mixing water. Stable across temperatures (works well even above 40°C) and compatible with all gypsum types (α/β-hemihydrate, flue-gas desulfurization gypsum).
Cost-effective & Reliable Supply:– Plant raw materials are abundant, globally available than animal-protein by-products.
🧱 Key Applications
Gypsum Plaster & Stucco: – Extends working time for hand/machinery spraying; improves surface finish.
Gypsum Self-leveling Flooring: – Maintains flowability, Maintains flowability for large flooring areas; prevents premature setting.
Gypsum Joint Compounds & Gypsum Adhesive: – Enhances workability and bond strength for interior finishing.
Gypsum Molds & Art Casting: – Enables intricate detailing with extended open time and minimal shrinkage.
Gypsum Board & Gypsum Blocks: – Optimizes production line speed, prevents premature setting, reduces breakage and ensures consistent quality.
Available Grade
|
Grade |
Chemical Base |
Type |
Function |
Note |
Application |
Technical Data Sheet |
|
Guudpoly GR41 |
Natural polymer |
Powder |
Retarder |
popular grade |
Gypsum plaster, Gypsum joint filler, Gypsum Art, Gypsum board |
|
|
Guudpoly GR42 |
Natural polymer |
Liquid |
Retarder |
popular grade |
Gypsum plaster, Gypsum joint filler, Gypsum Art, Gypsum board |
|
|
Guudpoly GR81 |
Natural polymer |
Liquid |
Retarder |
very high concentration |
Gypsum plaster, Gypsum joint filler, Gypsum Art, Gypsum board |
|
|
Guudpoly GR91 |
Natural polymer |
Liquid |
Retarder |
very high concentration |
Gypsum plaster, Gypsum joint filler, Gypsum Art, Gypsum board |
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