A kind of UL94-5VA high flame retardant light heat aging resistance halogen-free environment-friendly flame retardant polypropylene material and preparation method thereof

Abstract

The invention discloses an environment-friendly high flame retardant and light-heat aging resistant halogen-free polypropylene material capable of meeting UL94-5VA and a preparation method of the polypropylene material. The polypropylene material comprises the following raw materials: polypropylene resin, a fire retardant, zirconium phosphate, heat insulating filling, a compatilizer, a primary antioxidant, an auxiliary antioxidant, an ultraviolet protection absorbent, a light stabilizer, an anti-drip agent and a lubricant. The invention further discloses the preparation method of the polypropylene material at the same time. The material does not use a glass fiber as a support and connecting material, and uses an ammonium polyphosphate expansion system as the fire retardant to be compoundedwith zirconium phosphate as a flame retardant synergist, and the prepared polypropylene material can pass UL94 1.8mm 5VA flame retardant testing. The benzotriazole uvioresistant absorbent is compounded with the hindered amine light stabilizer; the hindered phenol primary antioxidant is compounded with the phosphorus auxiliary antioxidant for a polypropylene product; and the prepared material hasexcellent light-heat aging resistance and can be used for a long time outdoors without performance loss.

Description

technical field [0001] The invention relates to a halogen-free environment-friendly flame-retardant polypropylene material capable of passing UL94-5VA, high flame-resistance, light-heat aging resistance, and a preparation method thereof. Background technique [0002] Polypropylene (PP for short), as one of the five general-purpose resins, has very good mechanical properties, processability and relatively high cost performance, and is widely used in many fields such as injection molding, film and fiber production . However, PP itself, as a kind of plastic, has the defect of being flammable, and flame retardant modification is required to obtain flame retardant PP products. However, for applications requiring relatively high flame retardancy, such as new energy vehicles, heater housings, and microwave oven housings, general flame-retardant modification methods cannot achieve it, and multi-component flame-retardant synergy is required to meet the requirements. At the same tim...

AI Technical Summary

Problems solved by technology

The disadvantage is that the wicking effect of the glass fiber and the damage to the carbon layer of the intumescent flame retardant will reduce the flame retardant performance

The flame retardant performance of the prepared material can only reach UL941.6mm V-0, and pentaerythritol is added as a char-forming agent, and the material will precipitate when it is passed through water, which will affect the flame retardant effect

Moreover, it is difficult to resist degradation caused by light during long-term outdoor use with only one light stabilizer

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