Halogen-free Flame Retardant for pp

The Halogen-free Flame Retardant for pp developed and produced by Taixing adopts the core technology of high-purity ammonium polyphosphate (APP) purification, melamine cyanurate (MCA) synergistic effect, and nano modification. With an addition amount of less than 30%, it can achieve UL 94 V-0 flame retardant for 1.6mm PP products, while maximizing the lightweight and toughness advantages of the substrate, completely free of halogens, heavy metals, and harmful additives. It provides a "high-performance, high compliance, low-cost" halogen-free flame retardant solution for fields such as new energy vehicles, electronics and electrical equipment, and building materials.

Core strengths

1. Phosphorus nitrogen synergistic flame retardant, achieving efficient flame retardant with low addition amount

-Adopting a high-purity APP (purity ≥ 99.8%)+MCA+nano aluminum hydroxide ternary synergistic formula, with halogen (Cl+Br) content ≤ 500ppm, fully meeting global halogen-free flame retardant standards.

-During combustion, a dual mechanism of "gas-phase free radical capture+condensed phase expansion into carbon" is triggered, forming a dense and continuous expanded carbon layer with an expansion rate of 15:1, effectively blocking the transfer of oxygen and heat. Adding 28% to 1.6mm thick PP products can stably achieve UL 94 V-0 level, with a limit oxygen index (LOI) of ≥ 33%, and the amount added is reduced by 15% -20% compared to traditional inorganic halogen-free flame retardants.

-No droplets, low smoke toxicity characteristics, combustion smoke toxicity meets the highest safety level of EU EN 13501-1:2024, smoke density (DS, 4 minutes) ≤ 170, no corrosive gas release, greatly improving safety in fire scenarios.

2. Nano composite modification, extremely compatible with PP substrate

-By using silane coupling agent KH-550+PP-g-MAH grafting double-layer coating technology, an affinity layer highly matched with PP molecular chains was constructed on the surface of flame retardant particles, which improved the interface compatibility by 65% and completely solved the industry pain points of uneven dispersion, agglomeration whitening, and surface pitting of traditional halogen-free flame retardants.

-The average particle size is precisely controlled within 2.0-2.5 μ m, with a particle size distribution span of ≤ 0.8 μ m. It is tightly bonded with the PP matrix, and the surface smoothness of the processed product can reach mirror level, suitable for scenarios with strict appearance requirements such as household appliance shells and automotive interior parts.

-Without the need for additional dispersants or compatibilizers, it can be processed by directly melting and blending with PP resin, without changing the parameters of existing extrusion and injection molding production lines. The processing torque is reduced by 25%, and the production efficiency is increased by 18%.

3. Low performance loss, ensuring the core mechanical advantages of PP substrate

-The mechanical properties of PP substrate are minimally affected, with a tensile strength retention rate of ≥ 93%, a notch impact strength of ≥ 5.5 kJ/m ², and a fracture elongation retention rate of ≥ 88%, perfectly solving the problem of material brittleness caused by high addition of traditional halogen-free flame retardants.

-The 1% thermal weight loss temperature is ≥ 320 ℃, and the processing temperature window is wide up to 180-230 ℃. It accurately matches the processing temperature of various substrates such as homopolymer PP, copolymer PP, and high impact PP, and there is no decomposition, yellowing, or gas release during high-temperature processing, avoiding defects such as bubbles and warping in the product.

-The water absorption rate is ≤ 0.5% (24-hour immersion test), far below the industry average level, effectively improving the weather resistance and long-term stability of the product. There is no discoloration or brittleness after 6 months of outdoor use.

Application scenarios

In the field of new energy vehicles

-Application: Automotive interior panels, door panel frames, battery casings, high-voltage wire harness sheaths

-Recommended formula: 72% high impact PP+25% halogen-free flame retardant+3% synergist

-Advantages: Low smoke toxicity characteristics comply with FMVSS 302 automotive interior flame retardant requirements, pass VOC and ELV testing standards, lightweight design helps reduce body weight, and adapts to the high safety needs of new energy vehicles

Electronic and electrical field

-Application: 5G base station casing, router casing, power adapter casing, home appliance control panel

-Recommended formula: 70% copolymer PP+28% halogen-free flame retardant+2% synergist

-Advantages: Halogen free environmental characteristics meet global access standards for electronic devices, with a smooth and defect free surface, temperature resistance suitable for long-term operation of electronic devices, and stable flame retardant performance up to UL 94 V-0 level

Building materials field

-Application: PP-R water supply pipe, flame-retardant ventilation duct, cable tray, building formwork

-Recommended formula: homopolymer PP 68%+halogen-free flame retardant 30%+synergist 2%

-Advantages: The flame retardant rating meets the B1 level requirements of the EU CPR building regulations, is resistant to acid and alkali corrosion, has a low water absorption rate to ensure long-term stability, and does not release corrosive gases

If you are looking for Halogen-free Flame Retardant for pp, high toughness halogen-free flame retardants PP, high flowability halogen-free flame retardants, high CTI halogen-free flame retardants, Taixing will be your best partner!