What Makes Zinc Borate 3.5 Hydrate the Ideal Flame-Retardant Additive for Modern Materials?
2025-12-04
As industries continue to demand safer, more durable, and environmentally friendly materials, Zinc Borate 3.5 Hydrate has become one of the most reliable multifunctional flame-retardant additives. At Shandong Taixing Advanced Material Co., Ltd., we supply high-purity Zinc Borate 3.5 Hydrate designed to support plastics, rubber, coatings, and wood composites. In this article, I explain why this material matters, its performance advantages, and how it improves various applications. I personally work with manufacturers using Zinc Borate 3.5 Hydrate, and I have seen how it significantly enhances flame resistance, smoke suppression, and durability.
Why Is Zinc Borate 3.5 Hydrate Important in Flame-Retardant Systems?
Zinc Borate 3.5 Hydrate plays a crucial role as a smoke suppressant, flame retardant synergist, and anti-tracking agent. It works especially well in halogen-free and low-smoke formulations, helping manufacturers meet stringent safety regulations.
Key Functions
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Enhances char formation
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Improves flame resistance
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Reduces smoke generation
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Provides anti-fungal and anti-corrosive properties
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Stabilizes PVC and polymer systems
Technical Parameters of Zinc Borate 3.5 Hydrate
| Parameter | Specification |
|---|---|
| Chemical Formula | 2ZnO·3B₂O₃·3.5H₂O |
| Appearance | White powder |
| ZnO Content | ≥ 37% |
| B₂O₃ Content | ≥ 48% |
| Moisture | ≤ 2.0% |
| Particle Size (D50) | 3–8 μm |
| Decomposition Temperature | ≥ 290°C |
How Does Zinc Borate 3.5 Hydrate Improve Material Performance?
1. Enhanced Flame Retardancy
Zinc Borate 3.5 Hydrate helps materials create a protective char layer, slowing down combustion and reducing heat release.
2. Excellent Synergy With Other Additives
It works with aluminum hydroxide (ATH), magnesium hydroxide (MDH), and antimony trioxide to achieve stronger flame-retardant effects.
3. Long-Term Stability and Durability
Because it also acts as a fungicide and anti-tracking agent, it improves the lifetime of plastics, wires, cables, and wood products.
Q&A Interaction
Q1: Why do I choose Zinc Borate 3.5 Hydrate for polymer applications?
A1: I choose it because it offers stable flame-retardant synergy and excellent thermal performance without compromising material strength.
Q2: How does Zinc Borate 3.5 Hydrate help my customers reduce smoke and toxicity?
A2: It releases water during decomposition, diluting combustible gases and reducing smoke density, something my clients value highly.
Q3: What benefits do I see when recommending Zinc Borate 3.5 Hydrate from Shandong Taixing Advanced Material Co., Ltd.?
A3: I see improved char formation, better electrical insulation, and higher customer satisfaction thanks to our consistent product quality.
Application Fields
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PVC wires & cables
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Engineering plastics (PA, PBT, PE, PP)
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Rubber products
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Wood composite materials
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Intumescent coatings
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Halogen-free flame-retardant formulations
Why Choose Shandong Taixing Advanced Material Co., Ltd.?
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Advanced production lines
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Stable quality and fine particle control
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R&D support for customized flame-retardant solutions
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Reliable global supply capability
Conclusion
Zinc Borate 3.5 Hydrate is an essential multifunctional additive enhancing flame resistance, smoke suppression, and durability across various industries. If you are looking for a trusted supplier with consistent quality, Shandong Taixing Advanced Material Co., Ltd. delivers professional, stable, and efficient support for your material formulations.
For pricing, technical guidance, or bulk supply—contact us anytime.