Halogen Free PP Flame Retardant Filler

The halogen free pp flame retardant filler produced by Taixing adopts phosphorus nitrogen synergistic effect+nanocomposite modification technology. Through high-purity purification of ammonium polyphosphate (APP) and synergistic compounding of layered double hydroxide (LDH), it can achieve UL 94 V-0 flame retardant of 1.6mm PP products with only 25% -30% addition amount, while maximizing the lightweight and toughness advantages of the substrate, completely free of halogens, heavy metals and harmful additives, providing a triple core guarantee of "environmental compliance, efficient flame retardant, and low damage performance" for fields such as electronics and electrical, new energy vehicles, and building materials.

Core strengths

1. Phosphorus nitrogen synergistic system, low addition, high flame retardant efficiency

-Adopting high-purity ammonium polyphosphate (APP, purity ≥ 99.7%)+melamine cyanurate (MCA)+nano zinc borate ternary synergistic formula, with bromine, chlorine and other halogen content ≤ 500ppm, fully meeting the halogen-free standard requirements.

-During combustion, a dense and tough expanded carbon layer (with a carbon expansion rate of 14:1) is formed through the dual action of "gas-phase free radical capture+condensed phase expansion into carbon". Adding 28% to 1.6mm PP products can stably achieve UL 94 V-0 level, with a limit oxygen index (LOI) of ≥ 33%, far superior to the flame retardant efficiency of traditional inorganic fillers with an addition amount of over 40%.

-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) ≤ 180, no corrosive gas release, greatly improving fire escape safety.

2. Nano composite modification, extremely compatible with PP substrate

-The double-layer coating technology of silane coupling agent+PP-g-MAH grafting is adopted to construct an affinity layer on the surface of the filler that matches the PP molecular chain. The interface compatibility is improved by 65%, solving the industry pain points of uneven dispersion and white aggregation of traditional halogen-free fillers.

-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 to the PP matrix, and the processed product surface is smooth and free of blemishes, suitable for scenarios with strict appearance requirements such as home appliance casings and automotive interiors.

-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 30%, and the production efficiency is increased by 20%.

3. Low performance loss, ensuring the core advantage 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 ≥ 5.8kJ/m2, and a fracture elongation retention rate of ≥ 90%, perfectly solving the problem of material brittleness caused by high addition of traditional halogen-free fillers.

-The 1% thermal weight loss temperature is ≥ 320 ℃, and the processing temperature window is wide up to 180-230 ℃, which accurately matches the processing temperature of various substrates such as homopolymer PP, copolymer PP, and high impact PP. High temperature processing has no decomposition, yellowing, or gas release.

-The water absorption rate is ≤ 0.6% (24h), far below the industry average, effectively avoiding warping and cracking problems after product molding. It has excellent weather resistance and has no discoloration or brittleness after six months of outdoor use.

Application scenarios

In the field of new energy vehicles

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

-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

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

Electronic and electrical field

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

-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 flame retardant performance certified by UL 94 V-0 level

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

Building materials field

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

-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

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

Medical and daily use fields

-Application: Reusable surgical tray, child safety seat frame, flame-retardant turnover box

-Advantages: Low extractable content meets medical and daily safety standards, high toughness and impact resistance, and maintains V-0 flame retardant effect even after 20 high-pressure sterilization cycles (121 ℃)

-Recommended formula: 73% medical grade PP+26% halogen-free flame retardant filler+1% synergist

If you are looking for halogen-free polypropylene flame retardant, halogen-free PP flame retardant filler, environmentally friendly flame retardant polypropylene, high toughness halogen-free flame retardant PP, high fluidity halogen-free flame retardant, low-density halogen-free flame retardant PP, halogen-free V-0 polypropylene, phosphorus nitrogen synergistic PP flame retardant filler, new energy vehicle PP flame retardant filler, environmentally friendly halogen-free PP flame retardant, Taixing will be your best partner, and we will provide the most favorable price cooperation!