Taixing is a factory that specializes in producing industrial grade zinc borate, which has excellent dispersibility, thermal stability, and compatibility with substrates, and almost does not affect the physical and mechanical properties of the final product. The synergistic effect of "1+1>2" with multiple flame retardant systems (especially aluminum hydroxide/magnesium) significantly reduces the total addition amount and optimizes costs. It is an ideal choice to replace traditional antimony based and halogen based flame retardants.
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project |
Specifications |
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chemical name |
Zinc Borate Hydrate |
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CAS |
[1332-07-6] / [12513-27-8](According to different crystal waters) |
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molecular formula |
2ZnO·3B₂O₃·3.5H₂O(Typical) |
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appearance |
Fine white flowing powder |
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Bulk density |
About 0.8-1.1 g/cm ³ |
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Dehydration starting temperature |
290 ° C, ensuring stability at most polymer processing temperatures |
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Average particle size (D50) |
2.5 ± 0.5 μ m (customized particle size can be provided according to customer requirements) |
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Boron content (B ₂ O3) |
≥ 48.0% |
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Zinc content (ZnO) |
≥ 37.0% |
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Loss on ignition (LOI, 600 ° C) |
≤ 13.5% |
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moisture |
≤ 1.0% |
1. Charcoal formation and barrier effect: Under flame attack, it rapidly decomposes, promoting the formation of a hard, porous expanded carbon layer in the polymer matrix, effectively isolating heat and oxygen from transferring inward, and preventing the escape of flammable volatile products.
2. Environmental safety: free of halogens and heavy metals (compliant with RoHS/REACH), low smoke, low toxicity, and no corrosive gas release during combustion. 3. Multi functionality: Simultaneously providing multiple protections such as flame retardancy, smoke suppression, carbonization, anti droplet and anti arc tracking.
4. Synergistic effect enhancement: When shared with ATH/MDH, zinc borate can lower its decomposition temperature, exert flame retardant effect in advance, and jointly build a stronger and more continuous carbon layer network.
Core strengths
·Smoke Suppression Master: significantly reduces the smoke density generated by materials during combustion (up to 40% or more), and improves evacuation visibility in fires.
·Anti melt droplet performance: enhances the strength of the carbon layer and prevents dangerous melt droplets from being generated during polymer combustion.
·Improvement of electrical insulation: Improve the arc tracing resistance (CTI value) of the final product, suitable for electrical and electronic materials.
·Anti corrosion function: The decomposition products have a certain anti-corrosion protection effect on the substrate.
1. Polymer composite materials
·PVC products: insulation and sheath materials for wires and cables, conveyor belts, floor leather, wallpaper. Suggested dosage: 5-15 phr.
·Engineering plastics: PA, PBT, PET are used for electronic and electrical connectors and casings. When used in conjunction with phosphorus nitrogen flame retardants, the effect is excellent.
·Elasticity and rubber: EPDM, NBR, silicone rubber are used for fireproof sealing strips, conveyor belts, and shock-absorbing components.
·Unsaturated polyester: fiberglass products (SMC/BMC), cooling towers, pipelines.
2. Wood and paper processing
·Used for producing flame-retardant plywood, fiberboard, and specialty paper.
·Pre dispersion: Industrial Grade Zinc Borate is recommended to mix it evenly with resin powder or other fillers at high speed in advance to achieve the best dispersion effect.
·Processing temperature: This product has high thermal stability and is suitable for typical extrusion (150-220 ° C) and injection molding (200-280 ° C) processes.
·Compatibility: Good compatibility with most polymers and additives. It is recommended to conduct a small-scale evaluation before finalizing the formula.
·Operation: It is recommended to operate in a well ventilated area, wear dust masks and goggles, and avoid inhaling dust.
·Storage: Store in a cool, dry, and ventilated warehouse, avoiding mixing with strong acids and oxidants.
Taixing welcomes your negotiations and cooperation to help you quickly solve material challenges.
Address
Lvye Road West, Diao Town Chemical Industry Park, Mingshui Economic & Technology Development Zone, Zhangqiu, Jinan, China
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