Efficient smoke suppression zinc borate 2335 is a high-end functional flame retardant and smoke suppression additive developed based on directional flake crystal synthesis and amino epoxy dual functional group modification technology. It is designed to solve the industry pain points of high-end materials, such as "flame retardancy meeting standards but smoke exceeding standards, mechanical performance degradation, and insufficient weather resistance". Different from the performance shortcomings of conventional zinc borate, which is characterized by heavy flame retardancy and light smoke suppression, this product achieves a quadruple core breakthrough of efficient flame retardancy, ultimate smoke suppression, mechanical protection, and weather stability. It can be compounded with flame retardants such as phosphorus nitrogen series, expansion type, and hydroxides, and is widely used in engineering plastics, high-end communication cables, and interior coatings for rail transit.
Patent crystal structure control+dual functional group modification process
By using hydrothermal method for precise temperature control crystal growth technology, a high specific surface area sheet-like single crystal zinc borate substrate is directionally synthesized. The sheet-like crystals can form a "layered barrier network" inside the material, greatly improving smoke suppression and carbonization efficiency; The supporting amino epoxy bifunctional silane grafting modification process constructs a dual active group layer on the crystal surface, while strengthening the interfacial bonding with polar and non-polar substrates, solving the industry problem of narrow adaptability and large mechanical property loss of single functional group modifiers. The particle size of the product is precisely controlled within 2-5 μ m, with a specific surface area that is 60% higher than that of ordinary zinc borate. The smoke suppression efficiency is more than 75% higher than that of general modified zinc borate, and the synergistic flame retardant performance is simultaneously enhanced.
1. Targeted free radical quenching and smoke suppression: During the combustion stage, the boron containing gas phase components released by the decomposition of high-efficiency smoke suppressing zinc borate 2335 can target and capture reactive free radicals such as · OH and · H in the combustion chain, cutting off the generation path of toxic smoke (such as carbon monoxide and polycyclic aromatic hydrocarbons); At the same time, the sheet-like crystals adsorb smoke particles, reducing the material's smoke density (SDR) by more than 70% and the smoke generation rate (SPR) by 65%, meeting the strict requirements of low smoke and no visible black smoke.
2. Dense ceramicized carbon layer flame retardant: The boronic ester groups generated by decomposition crosslink with the molecular chains of the substrate, promoting the formation of a high-strength and high adhesion ceramicized carbon layer. This carbon layer can block oxygen and heat transfer in both directions, suppressing flame spread; At the same time, the carbon layer structure is dense and pore free, avoiding smoke penetration and dispersion, achieving a dual effect synergy of "flame retardant+smoke suppression", and helping the material easily pass high-end standards such as UL94 V-0 and EN 45545 HL3.
3. Interface compatibility and protective mechanical properties: The dual functional group modified layer forms physical entanglement and chemical cross-linking with the molecular chains of engineering plastics, cable materials, and other substrates, filling the interface gaps between inorganic additives and organic substrates to avoid material brittleness; The impact strength retention rate of ABS products after addition is ≥ 95%, and the elongation at break retention rate of cable sheath material is ≥ 92%, fully meeting the structural performance requirements of high-end products.
4. Weather resistance, anti-aging and extended life: the surface modified layer has excellent UV resistance and moisture resistance, which can resist outdoor exposure, high temperature and humidity and other adverse environmental erosion; After adding, the weather resistance of the product is improved by 50%, and the service life is extended to more than 15 years, suitable for long-term service scenarios such as rail transit and outdoor building materials.
1. Dual advantages of smoke suppression and flame retardancy, breaking through industry bottlenecks in performance
-Leading smoke suppression efficiency: When used in combination with phosphorus nitrogen flame retardants for ABS automotive interior parts, the smoke density (SDR) is reduced by 75%, and the release of toxic gases meets the GB/T 20285-2006 standard, meeting the strict requirements of ISO 6722 in the automotive industry;
-Flame retardant synergistic efficiency: The recommended addition amount is only 5% -10%, which can achieve UL94 V-0 flame retardant level for PC/ABS materials, increase the oxygen index to over 34%, and reduce the addition amount by 35% compared to general zinc borate;
-Anti dripping and anti spreading: During the melting and combustion stage of the material, it combines with the melt to form a high viscosity glassy composite, effectively preventing the melting dripping of materials such as PP and ABS, and eliminating the risk of secondary fire.
2. Zero halogen environmental protection
-100% halogen-free, antimony free, and heavy metal free, with no release of corrosive toxic gases such as hydrogen halides and cyanides during combustion
-Meets specialized standards such as EN 45545 for rail transit, UL 1581 for cable industry, IATF 16949 for automotive industry, and can be used in areas such as high-speed rail interior, high-end communication cables, and new energy vehicle components;
-The combustion residue is a stable and harmless inorganic compound that can be recycled and reused, meeting the circular economy requirements of the EU WEEE directive, and helping enterprises achieve green production.
3. Broad spectrum high-end adaptation
-Excellent compatibility with high-end substrates such as ABS, PC/ABS, PP, PE, XLPE, epoxy resin, etc., with uniform dispersion and no agglomeration, without the need for additional dispersants;
-The decomposition temperature can reach up to 310 ℃, and it can withstand high temperature processing environments of 200-300 ℃. It is suitable for various high-end processing technologies such as injection molding, extrusion, rolling, and coating, and will not cause product bubbles, yellowing, or color difference due to high temperature decomposition;
-It does not affect the subsequent precision processing steps such as coloring, electroplating, and coating of the product, and is suitable for products with strict appearance requirements such as white goods and high-end electronic components.
Q1: What is the core difference between high-efficiency smoke suppression zinc borate 2335 and general-purpose modified zinc borate?
A1: General modified zinc borate is mostly single crystal form and single functional group modified, with weak smoke suppression performance and high mechanical loss; This product is a directional sheet-like single crystal modified with dual functional groups, which improves smoke suppression efficiency by more than 75%, while also considering flame retardancy and mechanical protection, suitable for high-end material needs.
Q2: Does the "enhanced smoke suppression" feature of zinc borate 2335 sacrifice its classic flame retardant synergistic effect for efficient smoke suppression?
A2: Absolutely not, but rather enhanced. The core of its strengthening mechanism - more efficient catalytic carbonization and better glass barrier formation - is precisely the key to improving the flame retardant efficiency of condensed phases. In fact, smoke suppression and flame retardancy have reached a higher level of unity here: by efficiently fixing more carbon in high-quality carbon layers, it reduces smoke (solid carbon particles) and enhances fire barriers (carbon layer quality).
Q3: Will white or light colored cables and building materials with extremely high color requirements affect the color of the products?
A3: Efficient smoke suppression zinc borate 2335 has implemented stricter whiteness control (usually ≥ 96) and impurity removal in production. Its own color is whiter than many standard products. More importantly, its efficient catalytic effect can reduce the black smoke deposition pollution caused by incomplete combustion of polymers, and in some cases, even contribute to the residual lighter color on the surface of products after combustion. For color matching, it provides a purer and more stable neutral base.
If you are looking for high-efficiency smoke suppression zinc borate 2335, low smoke density ZB-2335, and smoke suppression enhanced zinc borate, Taixing will be your best choice, and we will offer the lowest price cooperation. Welcome to negotiate!
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