A kind of preparation method of porous graphene powder for automobile alloy material

Abstract

The invention discloses a preparation method of porous graphene powder for automobile alloy material. The method comprises the following steps of : step 1, adding the graphene oxide into the absoluteethyl alcohol, then adding the polyvinylpyrrolidone, and ultrasonically stirring to be completely dispersed to obtain the graphene oxide dispersion liquid; step 2, adding the graphene oxide dispersionliquid into a sealed reaction kettle for pressurization and heating reaction for 1-3 hours, and carrying out the gradient step-down cooling reaction to obtain mixed graphene oxide; step 3, adding themixed graphene oxide into the aluminum chloride solution, then stirring and introducing the ammonia gas until no precipitation is generated, filtering, and drying to obtain the aluminum hydroxide-coated composite graphene oxide precipitate; step 4, adding the composite graphene oxide precipitate into an organic solvent for aeration reaction for 1-3 hours, and then taking out and drying to obtainoxidized graphene precipitate; step 5, adding the graphene oxide to the ethanol water solution, adding the acid solution and the tea polyphenol, and performing ultrasonic reaction for 2-3 hours to obtain the porous graphene precipitate, and filtering and washing and drying to obtain the porous graphene powder.

Description

technical field [0001] The invention belongs to the field of automobile alloy materials, and in particular relates to a method for preparing porous graphene powder used in automobile alloy materials. Background technique [0002] The car spoiler, also known as the car tail, is an additional plate installed above the rear of the car. Its function is to reduce the lift of the rear of the car during driving and increase the grip of the rear wheels, thereby improving the stability of the car at high speed. [0003] Automobile spoiler belongs to the exterior parts of automobiles, and its material needs to have good cold and heat alternating, resistance to humidity and heat aging, impact resistance, chemical corrosion resistance, vibration resistance, weather resistance, scratch resistance, good dimensional stability, etc. . [0004] There are three types of car spoiler materials commonly used in the market: [0005] The first is FRP. The spoiler made of FRP is relatively close ...

AI Technical Summary

Problems solved by technology

[0005] The first is FRP. The spoiler made of FRP is relatively close to the body line. The disadvantage is that its structural design freedom is low and its molding processability is average;

[0006] The second type is aluminum alloy. The spoiler made of aluminum alloy has a strong metallic appearance, good diversion effect, high density of defects, and low degree of freedom in structural design;

[0007] The third is carbon fiber. The spoiler made of carbon fiber has high strength and high durability. The disadvantage is that it is expensive.

Although this technical solution provides a good impact resistance effect by using hollow glass microspheres as the filling substrate, the hollow glass microspheres have the problem that they are easily broken by impact and are easily damaged during use. Good capacitive and stable structure filling base material