High glow wire flame retarding reinforced PPO/PA alloy and preparation method thereof

Abstract

The present invention relates to a high glow wire flame retarding reinforced PPO / PA alloy and a preparation method thereof. The alloy comprises by weight: 10-30% of PPO, 10-50% of PA, 3-10% of a compatibilizer, 5-15% of a halogen based flame retardant, 2-10% of an intumescent flame retardant, 1-8% of an inorganic flame retardant, 0.2-3% of a smoke suppressant, 10-40% of alkali-free glass fiber, 2-10% of a flexibilizer, 0.2-2% of a charring agent, 0.2-0.5% of an antioxidant, and 0.2-1.0% of a lubricant. The present invention also relates to the preparation method of the alloy, comprising: weighing each component as a weight ratio, putting into a high-speed mixer to mix the material for discharging, and extruding for granulation by a twin-screw extruder. The invention has the advantages that: smoke emission of the alloy is small, the alloy can fully meet the product with a thickness above 0.8mm, the temperature of the glow wire GWIT is no less than 850 DEG C, flame retarding is at UL94-V0 grade, the alloy is in accordance with VDE requirements, fully meets the requirements of injection molding process and meets the EU RoHS, IEC non-halogenation and Reach regulatory requirements, is low in cost, good in dimensional stability, and easy to dye, and has good market prospects.

Description

technical field [0001] The invention relates to a PPO / PA alloy material and a preparation method thereof, in particular to a high glow wire flame-retardant reinforced PPO / PA alloy and a preparation method thereof. Background technique [0002] Polyphenylene oxide (PPO) has good mechanical properties, chemical stability, dielectric properties, heat resistance and flame retardancy, and is a high-performance thermoplastic engineering plastic. However, the molecular chain of PPO is relatively rigid and is very sensitive to notch impact. At the same time, due to its high melt viscosity, it cannot be injection molded, which greatly limits its application. PPO is rarely used alone, and more than 90% of commercial products are blended with other polymers or chemically modified. As one of the toughest thermoplastic engineering plastics with excellent performance and widely used, nylon has good processing fluidity and is easy to process and shape; due to the amide bond in its molecul...

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Problems solved by technology

[0003] At present, there are few studies on flame-retardant reinforced PPO / PA alloy materials. Therefore, the present invention provides a product with a small amount of smoke release, which can fully meet the glow-wire temperature GWIT≥850°C of a product with a thickness of 0.8mm or more, and a flame-retardant UL94-V0 grade. , in line with VDE requirements, and fully meet the requirements of injection molding process, better flame retardancy than other flame-retardant reinforced polyphenylene ether alloys on the market, lower cost, better dimensional stability, and easy to dye, has a good market prospect

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