PVC cable material zinc borate 2335 is a high-end specialized flame retardant and smoke suppressant additive developed and produced by Taixing. It is designed to solve the industry pain points of PVC cable insulation and sheath materials, such as "flame retardancy standards but excessive smoke, brittle mechanical properties, and high processing precipitation risks". Different from the shortcomings of poor compatibility between general zinc borate and PVC substrate, and limited smoke suppression effect, this product achieves a quadruple core breakthrough of efficient flame retardancy, ultimate smoke suppression, mechanical enhancement, and process adaptation. It can directly replace traditional toxic additives such as antimony oxide and is compounded with magnesium hydroxide and aluminum hydroxide for application in the fields of medium and low voltage PVC cables, mining PVC cables, and construction PVC wires. It is the core supporting material for PVC cable enterprises.
PVC exclusive oriented crystal form+dual functional group modification process
By using the hydrothermal method for precise temperature control of sheet-like crystal cultivation technology, low aspect ratio sheet-like zinc borate crystals adapted to the PVC molecular chain structure are directionally synthesized. The sheet-like crystals can form a "layered barrier network" in the PVC substrate, which not only improves the flame retardant and smoke suppression efficiency, but also avoids damage to the flexibility of the PVC material; The supporting epoxy ester based dual functional group grafting modification process constructs an active functional group layer on the crystal surface that highly matches the PVC molecular chain, strengthens the interfacial bonding force, and completely solves the industry problem of uneven dispersion and processing precipitation of inorganic additives in PVC substrates. The particle size of the product is precisely controlled within 2-5 μ m, and its compatibility with PVC substrate is improved by 60% compared to general zinc borate. The smoke suppression efficiency is increased by more than 70% compared to traditional flame retardant systems.
1. Fusion synergistic barrier flame retardant: During the combustion stage of PVC cable material, zinc borate 2335 is dehydrated step by step to absorb heat, and the released boronic ester components crosslink with PVC pyrolysis products, forming a dense glassy flame retardant carbon layer that covers the surface of the cable material to block oxygen and heat transfer, while suppressing the pyrolysis droplets of PVC material, helping PVC cable material easily pass UL 1581 VW-1 vertical combustion test and GB/T 18380 bundled combustion standard, eliminating the risk of flame spread.
2. Targeted smoke suppression, toxicity reduction, and deodorization: Boron containing gas phase components can accurately capture the hydrogen chloride gas and core components of smoke particles (carbon black, polycyclic aromatic hydrocarbons) generated during PVC combustion, cutting off the path of toxic smoke generation; Simultaneously suppressing the release of odors during PVC pyrolysis, reducing the smoke density (SDR) of PVC cable materials by more than 70%, and meeting the EN 50265 low smoke halogen-free standard for toxic gas concentration, significantly improving visibility and safety during fire evacuation.
3. Interface compatibility enhancement mechanics: The dual functional group modified layer forms physical entanglement and chemical cross-linking with PVC molecular chains, filling the interface gaps between inorganic additives and PVC substrates, and improving the tensile strength and elongation at break of PVC cable materials; The tensile strength retention rate of the PVC sheath material after addition is ≥ 92%, and the elongation at break is ≥ 300%, which solves the problem of PVC material brittleness and easy cracking caused by traditional flame retardants.
4. Anti precipitation and stable processing adaptation: The modified zinc borate 2335 is uniformly dispersed in the PVC substrate, without agglomeration or migration, and is suitable for the conventional extrusion processing temperature of 160-200 ℃ for PVC cable materials. It will not cause production defects such as additive precipitation, rough product surface, and broken wires due to high-temperature processing, improving cable production efficiency and finished product qualification rate.
1. Accurately adapt to PVC cable standards
-Double standard for flame retardancy and smoke suppression: When combined with aluminum hydroxide for PVC cable sheath material, the addition amount is only * * 8% -12% * *, which can replace 30% -50% antimony oxide, making the material reach UL 1581 VW-1 flame retardant level, reducing smoke density (SDR) by 70%, fully complying with EN 50265 low smoke halogen-free cable standard;
-Zero halogen, environmentally friendly and non-toxic: 100% halogen-free, antimony free, no heavy metals, no corrosive hydrogen chloride gas emissions during combustion
-Excellent special performance: outstanding aging resistance, after 1000 hours of UV aging test, the decay rate of flame retardant and smoke suppression performance is ≤ 5%; The anti-static performance meets the standard and can be used for the production of PVC cables for mining, which complies with the MT 818 mining cable safety standard.
2. Improve the mechanical properties of PVC cables
-Improve the flexibility and bending resistance of PVC cable materials, avoid sheath damage during cable laying, dragging, and low temperature environments, and reduce safety hazards such as leakage and short circuits;
-Excellent compatibility with PVC plasticizers, stabilizers and other additives, without affecting the weather resistance and acid alkali corrosion resistance of PVC materials, extending the service life of PVC cables to more than 15 years.
3. Process friendly and efficient, reducing the production cost of PVC cables
-Excellent compatibility with PVC resin, magnesium hydroxide, aluminum hydroxide and other substrate additives, without the need for additional dispersants or lubricants, reducing the comprehensive procurement cost of additives by 10% -15%;
-The decomposition temperature can reach up to 310 ℃, far exceeding the processing temperature of PVC cable material. It will not cause bubbles or yellowing of the product due to premature decomposition, thus improving production efficiency;
4. Stable and durable storage to meet global supply chain demands
-The product has stable chemical properties, with a moisture absorption rate of ≤ 0.3%. It can be stored for up to 5 years in a dry environment at room temperature, and does not require special moisture-proof packaging during transportation, reducing storage and logistics costs;
-After cross-border transportation simulation testing, there is no fluctuation in performance, ensuring stable supply and use of products in different climate regions around the world, without worrying about moisture and clumping issues during sea and land transportation.
Q1: What is the core difference between PVC cable material zinc borate 2335 and general zinc borate?
A1: General zinc borate has poor compatibility with PVC substrate, is prone to agglomeration and precipitation, and only focuses on flame retardancy; This product is an exclusive formula for PVC, using a sheet-like crystal structure and dual functional group modification, highly matching with PVC molecular chains. It has the triple effects of efficient flame retardancy, ultimate smoke suppression, and mechanical enhancement, and has no risk of precipitation.
Q2: Is it suitable for other PVC hard or soft products besides cables?
A2: Of course you can. The core mechanism is universal. In hard PVC profiles, it can provide flame retardancy and smoke suppression, and improve thermal stability; In soft PVC flooring and tarpaulins, it can also efficiently exert antimony free flame retardant and low smoke effects. The specific amount of addition needs to be adjusted according to the shape and performance requirements of the product.
If you are looking for PVC cable materials such as zinc borate 2335, PVC antimony free flame retardant, cable material specific zinc borate, low smoke halogen-free flame retardant, and mining PVC cable flame retardant, Taixing will be your best partner and we will offer the most favorable price for cooperation. Welcome to negotiate!
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