Halogen-Free Flame Retardant Cable Material Modifier

Halogen-Free Flame Retardant Cable Material Modifier

With technological advancements, there is an increasing demand for safety and reliability in confined and densely populated areas such as subway stations, high-rise buildings, as well as critical public facilities like ships and nuclear power plants. Consequently, there is an urgent need to develop new types of cables with low-smoke, halogen-free, and flame-retardant properties. In the early 1980s, developed countries worldwide began researching and producing low-smoke halogen-free flame-retardant materials and cables. Halogen-free flame-retardant cables have since seen rapid adoption and widespread use. In China, wire and cable manufacturers in cities such as Shanghai, Shenyang, Suzhou, Sichuan, Xiangtan, and Wuxi have successively developed flame-retardant power cables, flame-retardant mining rubber-sheathed flexible cables, flame-retardant shipboard cables, and other related products.

Modifiers are used in halogen-free flame-retardant filler-filled composite cable materials, such as aluminum hydroxide and magnesium hydroxide, to improve the compatibility and adhesion between the polyolefin matrix and inorganic flame retardants. They enhance the dispersion and compatibility of aluminum hydroxide and magnesium hydroxide, thereby maximizing the flame retardancy of the cable material, reducing smoke index, smoke emission, heat release, and carbon monoxide production, increasing the oxygen index, and improving drip resistance. These modifiers significantly enhance the mechanical and thermal properties of the material. Adding a small amount can further improve the composite material’s mechanical performance, increasing tensile strength and elongation, as well as thermal resistance and flame retardancy.

Common Applications:

1. Coupling Agent: Used for halogen-free flame retardants such as aluminum hydroxide and magnesium hydroxide to improve the compatibility and adhesion between the polyolefin matrix and inorganic flame retardants. Adding 8%–10% can further enhance the mechanical properties and thermal resistance of the composite material. Compared to common coupling agents such as silane, titanate, aluminate, and phosphate esters, it provides better improvement in the mechanical properties of polyolefin cable materials.
2. Dispersing Promoter: Used in polyolefin masterbatches, flame-retardant masterbatches, and degradable masterbatches. Due to its strong interaction with pigments, dyes, and flame retardants, it promotes the dispersion of these additives in the polyolefin carrier resin.
3. Bonding Promoter: Possesses high polarity and reactivity. Adding a small amount can significantly improve the paintability, adhesion, and compatibility of the material.

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