The best halogen-free flame retardant (HFFR) solutions for wire and cables: Aluminum hydroxide

In wire and cable applications, ATH (aluminum hydroxide) is commonly used as the HFFR (halogen-free flame retardant) material. HFFR materials are designed to reduce fire hazards, improve safety performance and minimize the production of toxic smoke in the event of a fire.

1. Enhance flame retardant performance, suppress smoke, enhance mechanical properties and environmental friendliness: ATH in HFFR materials effectively reduces the flammability of the material and enhances its flame retardancy. In addition to its role as a flame retardant, ATH can also be used as a filler in HFFR to enhance the material’s mechanical properties, such as tensile strength, hardness and wear resistance. In addition, ATH is non-toxic, odorless, environmentally friendly and safer for human health.

Below is a formula for HFFR compounds for reference:

2. HFFR formulations for wire and cable applications can contain ATH at levels ranging from 20% to 60% relative to the total weight of the formulation. However, it is important to note that the optimal addition amount may vary depending on the polymer matrix (e.g. PVC, PE, EVA, TPE, etc.), ATH particle size, required flame retardant level (e.g. UL94 v0, IEC standard) and specific application requirements.

3. Compared with other flame retardants, such as bromine antimony flame retardant and magnesium hydroxide flame retardant, the cost of aluminum hydroxide is lower, and good quality products also perform very well in wires and cables, and the large amount of addition in the formula can save raw materials and achieve the purpose of cost reduction.

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