Highly Stable Phosphinate Flame Retardant

Highly Stable Phosphinate Flame Retardant--Aluminium Hypophosphite (Al (H2 PO2 )3 is kind of new type phosphorus flame retardant,It is a new generation of inorganic phosphorus based flame retardants modified through special processes, with a phosphorus content of ≥ 32% and a thermal decomposition temperature of ≥ 300 ℃ (increased by more than 20 ℃ compared to ordinary types). It has the characteristics of high temperature degradation resistance, water migration resistance, and excellent compatibility with substrates. It achieves high-level flame retardant effects such as UL94 V-0 level while maintaining material mechanical properties through the synergistic effect of gas-phase flame retardancy, condensed phase carbonization, and droplet suppression. It complies with EU RoHS, REACH, and GB/T 2408 standards and is suitable for high-end fields with strict stability requirements.Shandong taixing produce two type highly stable phosphinate flame retardant- : Aluminium Hypophosphite ( Low Sulfate Content,aht-220B ) and regular Aluminium Hypophosphite ( HT-220A) two type Aluminium Hypophosphite (Al (H2 PO2 )3.

Physical and Chemical Properties

Product Introduction:

1. Three core advantages, defining a new standard for stable flame retardancy

(1) Ultra high thermal stability, suitable for high temperature scenarios

Initial decomposition temperature ≥ 300 ℃: higher than ordinary aluminum hypophosphite (280 ℃) and most organic flame retardants. It does not decompose prematurely in high-temperature engineering plastics such as PA66 (processing temperature 280-300 ℃) and PPS (300-350 ℃) to avoid flame retardant failure or the formation of air pockets;

Long term heat resistance: After aging in an air atmosphere of 250 ℃ for 1000 hours, the flame retardant efficiency retention rate is ≥ 95%. It is suitable for long-term high-temperature scenarios such as automotive engine components and industrial high-temperature resistant pipelines.

(2) Strong chemical stability, resistant to environmental erosion

Low water solubility: The solubility is only 0.02g/100mL (25 ℃), which is better than the ordinary type (0.05g/100mL). It is not easily lost in humid environments such as sanitary ware and outdoor building materials, and its flame retardant performance is long-lasting and stable;

Chemical corrosion resistance: resistant to soaking in 30% sulfuric acid and sodium hydroxide solution for 24 hours, with a phosphorus content loss of ≤ 1%, suitable for special scenarios such as chemical equipment, battery electrolyte contact parts, etc.

(3) High compatibility and low impact, ensuring material performance

Nanoscale dispersion: particle size D50=1-2 μ m (ordinary type is 5-10 μ m), double coated with silane coupling agent, forming molecular level bonding with substrates such as PP, ABS, epoxy resin, etc., with a melt index fluctuation of ≤± 5%;

Mechanical performance retention rate: Adding 15% composite material, the tensile strength retention rate is ≥ 90%, and the elongation at break is ≥ 85% (usually 70-80% for ordinary flame retardants), suitable for high toughness demand scenarios (such as car bumpers, aerospace components).

2. Triple flame retardant mechanism, efficient flame and smoke suppression

Gas phase flame retardant: releases PO · free radicals at high temperatures, captures H · and OH · in the combustion chain reaction, and reduces the combustion rate by more than 60%;

Condensed phase flame retardant: forms a dense ceramic like carbon layer (with a 30% increase in thickness), increases the efficiency of blocking heat and oxygen transfer by 40%, and reduces the risk of melting and dripping;

Smoke suppression and toxicity reduction: During combustion, the amount of smoke released is reduced by 50%, the amount of CO generated is reduced by 35%, and the smoke density level (SDR) is ≤ 50, which meets high fire safety standards.

Key Advantage

High TGA: TGA(1%) ≥310℃

High Stable Quality:Purity mainly stable in 96.0%-97.5%

Application areas:

1. High temperature engineering plastics

Automotive industry: engine hood (PA66+GF), turbocharger components (PPS), adding 12-18% can pass UL94 V-0 level (0.8mm), resistant to oil corrosion (SAE 5W-30 immersion for 72 hours, performance retention rate ≥ 95%);

Electronic appliances: High frequency transformer frame (LCP), LED heat dissipation module (PPA), meets the hot wire test (GWIT ≥ 850 ℃), and can withstand high temperatures of 220 ℃ for a long time.

2. Materials for outdoor and humid environments

Building materials: PVC door and window profiles, PE-RT floor heating pipes, with a flame retardant rating of GB/T 8624 B1 after adding 8-12%, and a flame retardant efficiency retention rate of ≥ 90% after weathering (QUV aging for 2000 hours);

Bathroom products: ABS bathroom panels, PP bathtub components, resistant to hot water immersion (70 ℃/168h) with a phosphorus content loss of ≤ 0.5%, in compliance with GB 4706.1 (Home Appliance Safety Standard).

3. High end composite materials and special fields

Aerospace: drone body (carbon fiber reinforced PA6), aviation cable sheath (silicone rubber), passed FAR 25.853 (aviation material flame retardant test), with a combustion smoke toxicity level of SDR 1;

In the field of new energy: lithium battery casing (PC/ABS), charging pile module (PBT), with a flame retardant rating of UL94 V-0 and CTI ≥ 600V (anti leakage and anti trace).

Packaging :Net weight 25kg/bag, Compound paper-plastic bag and inner aluminum foil

Storage and Attention: Keep in dry, room temperature and moisture proof condition, preventing the heating.

Welcome to order

Choose high stability aluminum hypophosphite flame retardant to give your material triple stability guarantee of "high temperature resistance, water resistance, and strong compatibility"! Help your product break through performance limits.

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