Zinc Borate MonoHydrate has become one of the most widely used multifunctional flame retardant additives in plastics, rubber, coatings, and engineered materials. Its unique balance of thermal stability, smoke suppression, and cost-effectiveness has made it indispensable for manufacturers looking to enhance fire resistance without compromising material performance.
As demand for safer and more durable formulations grows, Zinc Borate MonoHydrate continues to stand out due to its chemical stability and strong synergy with halogen-free systems. Companies like Shandong Taixing Advanced Material Co., Ltd. offer industrial-grade solutions tailored to global manufacturing standards.
Zinc Borate MonoHydrate is valued for its ability to deliver flame retardancy, smoke suppression, and anti-tracking properties simultaneously. Its multifunctional behavior is especially important in industries where strict fire-safety regulations must be met.
Acts as a flame retardant and smoke suppressant
Improves char formation, creating a protective barrier
Provides anti-arcing and anti-tracking performance
Enhances thermal stability in polymer systems
Non-toxic and environmentally friendly
PVC, PE, PP, EVA, EPDM rubber
Engineering plastics
Wire & cable compounds
Coatings and adhesives
Intumescent systems
Wood-plastic composites
Manufacturers prefer Zinc Borate MonoHydrate because it works effectively at relatively low loading levels, maintaining mechanical properties while enhancing fire resistance.
Zinc Borate MonoHydrate improves fire resistance through several mechanisms:
During heating, the product promotes the formation of a dense, glassy protective char layer. This layer insulates the material from heat and oxygen, significantly slowing combustion.
The mono-hydrate form releases water at elevated temperatures, absorbing heat and reducing flame intensity.
Zinc Borate MonoHydrate works exceptionally well with:
Aluminum Hydroxide (ATH)
Magnesium Hydroxide (MDH)
Antimony Trioxide
Halogen-free formulations
This synergy boosts overall flame retardancy while minimizing smoke generation.
Below is a clear technical overview from Shandong Taixing Advanced Material Co., Ltd., presented in a simple and professional table.
| Parameter | Zinc Borate MonoHydrate (Typical Value) |
|---|---|
| Chemical Formula | 2ZnO·3B₂O₃·3.5H₂O |
| Appearance | White powder |
| Particle Size (D50) | 3–5 μm (customizable) |
| Purity | ≥ 99% |
| Moisture | ≤ 1.5% |
| Loss on Ignition | 13–15% |
| Melting Point | > 980°C |
| pH Value | 6.0–8.0 |
| Specific Gravity | 2.8–3.0 g/cm³ |
Excellent dispersion in polymer matrices
Stable in processing temperatures for most plastics
Strong compatibility with halogen-free flame retardant systems
Low water solubility, ensuring long-term stability
Zinc Borate MonoHydrate enhances both performance and cost efficiency across several sectors. Below is a detailed look at where it performs best.
Improves flame retardancy without compromising flexibility
Enhances insulation and anti-tracking properties
Works efficiently with ATH and MDH in halogen-free cables
Ideal for polyamides, polyesters, and polyolefins
Enhances char formation and suppresses dripping
Maintains mechanical strength under high heat
Improves resistance to combustion
Enhances electrical insulation
Suitable for EPDM, NBR, and SBR systems
Acts as both a flame retardant and preservative
Increases durability and weather resistance
Widely used in flooring, furniture panels, and protective coatings
A simple comparison helps illustrate its advantages.
| Feature | Zinc Borate MonoHydrate | Aluminum Hydroxide |
|---|---|---|
| Working Temperature | Higher | Lower |
| Smoke Suppression | Strong | Moderate |
| Synergy with Other FRs | Excellent | Limited |
| Required Dosage | Lower | Higher |
| Aspect | Zinc Borate MonoHydrate | Halogen-based |
|---|---|---|
| Environmental Impact | Environment-friendly | Not eco-friendly |
| Smoke Release | Very low | High |
| Char Formation | Strong | Weak |
| Regulations | Widely accepted | Strict limitations |
From the comparison above, it is clear that Zinc Borate MonoHydrate offers better cost-performance, environmental friendliness, and superior smoke suppression.
The typical dosage varies depending on the application:
3–15% for PVC and polyolefins
5–20% for rubber compounds
10–25% for halogen-free cable compounds
3–10% for wood plastic composites
Mixing can be done using standard equipment such as:
Twin-screw extruders
Internal mixers
High-speed mixers
To achieve the best dispersion and flame retardant performance, it is recommended to combine Zinc Borate MonoHydrate with synergistic additives provided by Shandong Taixing Advanced Material Co., Ltd.
It is used as a multifunctional flame retardant, smoke suppressant, and anti-tracking agent. Its primary applications include plastics, rubber, coatings, and wire & cable materials.
It releases water at high temperatures, promotes char formation, reduces smoke, and works synergistically with other flame retardants to enhance overall fire-retardant performance.
Dosage varies by material type. Typical usage ranges from 3% to 25%, depending on the polymer and required flame retardancy level.
Yes. It is non-toxic, halogen-free, and widely used in eco-friendly flame retardant systems to meet strict environmental regulations.
For high-purity Zinc Borate MonoHydrate and customized flame retardant solutions, please contact:
Shandong Taixing Advanced Material Co., Ltd.
We supply stable, high-performance materials suitable for global markets and industrial applications.
