Polypropylene thermoplastic elastomer composite material and preparation method thereof

Abstract

The invention provides a polypropylene thermoplastic elastomer composite material. Raw materials of the composite material comprises, by weight, 40-70 parts of polypropylene, 8-15 parts of an elastomer POE, 5-10 parts of a liquid silicone rubber, 2-3 parts of nanometer cerium oxide powder, 1.5-3.2 parts of nano-ceramic powder, 13-20 parts of carboxylated nitrile rubber, 0.6-1.3 parts of a cross-linking agent, 3-9 parts of a compatibilizer, 1.2-3.1 parts of an antioxidant, 1.5-2.5 parts of a coupling agent and 2.5-3 parts of a filler. The prepared polypropylene thermoplastic elastomer compositematerial has a high mechanical strength and an excellent low-temperature impact resistance, the low-temperature notch impact strength at -40 DEG C reaches 5.81-6.34 KJ/m<2>, and the product has a smooth surface and a good scratch resistance.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a polypropylene thermoplastic elastomer composite material and a preparation method thereof, belonging to the field of polymer modification and processing. Background technique [0002] Due to the rich source of polypropylene raw materials and low price, its excellent mechanical strength and processability, it is widely used in various fields such as automobiles, electrical appliances, daily necessities and furniture packaging. Polypropylene plastic is one of the non-metallic materials commonly used in passenger cars. The amount of polypropylene plastic used in mid-level cars has accounted for 12% to 15% of the weight of the vehicle. Polypropylene has become one of the automotive plastics, with rapid development and application. One of the largest and most frequently used plastics. [0003] As an important component of the body system, automotive interiors have broad market ...

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Problems solved by technology

[0004] CN107696517A provides a preparation method and application of a thermoplastic elastomer / foamed polypropylene composite material, which extrudes a thermoplastic elastomer film through a screw extruder, and then drafts and rolls it together with a foamed polypropylene substrate to form a thermoplastic The elastomer / foamed polypropylene composite material has a simple preparation method and high production efficiency, but the two phases of the thermoplastic elastomer and polypropylene cannot be completely fused, and the tensile strength of the prepared thermoplastic elastomer / foamed polypropylene composite material not tall

[0005] CN108276725A provides a polypropylene nanocomposite material with ultra-high fluidity, high rigidity and high impact resistance and its preparation method. The components contain 15%-25% elastomer toughening agent, and the notched impact strength of the composite material can reach 37KJ / m2, the tensile modulus reaches 1850MPa, but the composition of the composite material contains a large amount of inorganic fillers, which makes the material easy to age and produce fine lines, which affects the service life of the material, and the low-temperature impact strength is not high

[0006] CN106046546 provides a kind of preparation method of low-VOC glass fiber reinforced polypropylene retarded combustion composite material, adds a large amount of hollow glass microspheres and glass fiber to improve mechanical strength in polypropylene resin, adds nanometer photocatalyst simultaneously to catalyze and degrade VOC in the car, but , the hollow glass beads of this composite material have a particle size of 1-3mm, and at the same time, flashes or surface peeling are easy to occur after injection molding, and the surface friction resistance of the product is large, and it is easy to scratch

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