High temperate-resistant nanometer fire resistance-enhanced PA6 composite material and preparation method thereof

Abstract

The invention relates to a high temperate-resistant nanometer fire resistance-enhanced PA6 composite material and a preparation method of the composite material, belonging to the technical field of a material. The composite material comprises the following components in percentage by weight: 30-70% of nylon, 10-25% of main fire retardant, 3-12% of subsidiary fire retardant, 0.5-5% of nanommt, 10-30% of glass fiber, 2-12% of graft toughening modifier, 0.2-1% of antioxygen and 0.2-1% of lubrication dispersant. A preparation method of the composite material comprises the following steps of: taking each component according to weight percent; and putting each component into a high-speed mixing machine for 3-5min, discharging to obtain a mixture, controlling machining temperature of a double-screw extruder at 220-240 DEG C, and controlling the rotational frequency of screws at 180-600 revolutions per minute, putting the mixture into the double-screw extruder to carry out pelleting in an extruding way, so that the composite material is obtained. The invention has the following beneficial effects that the heat distortion temperature of the composite material is larger than 210 DEG C (1.82 M Pa), the shock resistance of the material is enhanced, compared with the conventional material, the water absorption ability is reduced to be at about 30%, and the composite material is higher in oxidation resistance, processing fluidity and environmental performance.

Description

technical field [0001] The invention relates to a composite material in the field of material technology and a preparation method thereof, in particular to a high temperature resistant nano [0002] Flame-retardant reinforced PA6 composite material and preparation method thereof. Background technique [0003] Polyamide has good mechanical strength and rigidity, and is also very good in wear resistance. These advantages make polyamide widely used in many fields such as automobile parts, mechanical parts, electrical and electronic, and its consumption is the first among the five major engineering plastics. It replaces traditional metal materials in many applications. [0004] However, due to the poor heat resistance and acid resistance of polyamide, and the high water absorption rate, the products prepared from it have poor dimensional stability and poor low temperature impact resistance. These shortcomings limit the application of polyamide. Due to the uniform dispersion of...

AI Technical Summary

Problems solved by technology

In the past, the flame retardant reinforced products of nylon used the traditional flame retardant system, the flame retardant was added in a large proportion, and the impact resistance of the material decreased; in some special occasions, flame retardant materials with excellent mechanical properties and which can be used at higher temperatures products; but at present, there are very few high-temperature-resistant nano-flame-retardant reinforcing materials, which cannot meet the needs of practice

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