540 results about "Polypropylene composites" patented technology

The invention discloses a talcum powder filled regenerated polypropylene composite material and a preparation method thereof, and relates to the technical field of regenerated polypropylene. The talcum powder filled regenerated polypropylene composite material comprises the following raw materials in parts by mass: 100 parts of regenerated polypropylene, 15-18 parts of a nucleating agent, 8-10 parts of a cross-linking agent, 0.1-0.3 part of an initiator, 0.5-1 part of an antioxidant, 0.5-0.7 part of a light stabilizer and 1-2 parts of a lubricant. The regenerated polypropylene comprises a regenerated polypropylene master batch and a modified polypropylene master batch in a mass ratio of 1: (1-2); the nucleating agent comprises modified talcum powder and an organic carboxylate nucleating agent in a mass ratio of 50: (1-2). According to the regenerated polypropylene composite material provided by the invention, the mechanical property of regenerated polypropylene is remarkably improved, and the generation of volatile irritant gas after processing is reduced.

The invention discloses an interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material and a method. The interface covalently bonded core-shell structure boron nitride polypropylene composite dielectric material comprises a maleic anhydride grafted polypropylene matrix and a core-shell structure filler dispersed in the maleic anhydride grafted polypropylene matrix, the core-shell structure filler comprises hydroxylated boron nitride nanoparticles covalently grafted on a polymer shell layer on the surface of the core-shell structure filler; the polymer shell layer is polyglycidyl methacrylate; the epoxy group of the polymer shell layer reacts with the anhydride group of the maleic anhydride grafted polypropylene matrix to form a covalent bond. The invention has the characteristics of strong interface bonding force, uniform filler dispersion, and excellent comprehensive electrical properties and processability.

The invention discloses a bio-based polypropylene composite material, a preparation method of a vehicle door interior decorative plate structure, the vehicle door interior decorative plate structure and a vehicle, and relates to the technical field of vehicles, and the bio-based polypropylene composite material comprises, by mass, 38-42 parts of bio-based polypropylene; 35 to 40 parts by mass of homo-polypropylene; 7-10 parts by mass of a toughening agent; 2-3 parts by mass of a reinforcing agent; 10-20 parts by mass of a filler; 3-5 parts by mass of a compatilizer; and 0.3 to 0.5 part by mass of a lubricant. According to the technical scheme provided by the invention, the density of the decorative plate body can be reduced under the condition that the strength and the rigidity are ensured, namely, the weight of the decorative plate body is reduced, so that the carbon emission of the decorative plate body can be reduced while the light weight of the decorative plate body is realized.

The invention relates to a biaxially oriented polypropylene composite film for a capacitor and a preparation method of the biaxially oriented polypropylene composite film. The biaxially oriented polypropylene composite film is of an ABA three-layer structure; wherein the layer A is prepared from the following raw materials: PP, a nucleating agent and a composite filler of MAH-g-PP and nanoparticles; the layer B is prepared from the following raw materials: PET master batch, modified silicon dioxide and a brush polymer. According to the preparation method, the three-layer structure composite film is prepared, the layers are firmly combined through covalent bonds, hydrogen-bond interaction and the like, and the interlayer peel strength is remarkably improved; a nano particle filler with a high dielectric constant is introduced into the A-layer structure, so that the dielectric strength of the film is improved, and meanwhile, the film has relatively high anti-breakdown strength; and the layer B effectively improves the mechanical stability of the film material, and has higher mechanical property and material rigidity compared with the traditional PP film.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polypropylene composite material. The polypropylene composite material comprises the following components in parts by weight: 40-80 parts of copolymerized PP (polypropylene), 5-25 parts of POE (polyolefin elastomer), 5-25 parts of polyisobutene and 10-30 parts of filler, the number-average molecular weight of the polyisobutene is greater than 600. The POE elastomer, the polyisobutene and the filler are introduced into the copolymerized PP, so that the polypropylene composite material with low sink mark characteristic and good mechanical property can be obtained.

The invention discloses a preparation technology for preparing a high-strength PP composite material based on waste plastic regeneration, and belongs to the technical field of regenerated PP composite materials. Cleaning and crushing the separated polypropylene plastic, adding the crushed polypropylene plastic, the maleic anhydride grafted polypropylene, the composite flame-retardant powder, the reinforcing agent, the modified organic silicon resin and the antioxidant 1010 into an internal mixer, carrying out melt blending, and discharging to obtain the high-strength polypropylene composite material. The polypropylene fragments, the composite flame-retardant powder, the reinforcing agent and the modified organic silicon resin are subjected to melt blending, so that the flame retardance, the oxidation resistance, the tensile strength and the cantilever beam notch impact strength of the regenerated polypropylene are further improved.

The invention discloses a recycled modified polypropylene composite material preparation system and a resource recovery method, and relates to the technical field of high polymer material science and engineering. The raw material pretreatment module adopts near infrared spectrum classification, multi-stage cleaning, drying and crushing, and the moisture content is controlled to be less than 0.5%; the melt blending module melts the materials at 180-220 DEG C, modifiers and additives are added, and vacuum degassing is performed to remove impurities; adding a reinforcing agent into the modification reinforcing module, and performing ultrasonic dispersion and dynamic vulcanization; the molding processing module is used for manufacturing a product through extrusion, injection molding or calendaring; the quality detection module is used for detecting mechanical and thermal properties; the waste recovery module is used for crushing and melting granulation to realize a closed loop; the intelligent control module uses a PLC to coordinate each module. Integrated treatment of waste polypropylene is achieved, the purity of raw materials and the performance of a composite material are improved, the resource utilization rate is increased through closed-loop recycling, manual intervention is reduced through intelligent control, product stability is guaranteed, economic and environment-friendly benefits are achieved, and high-valued circulation of waste plastic is promoted.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof. The polypropylene composite material comprises the following components in parts by weight: 50-80 parts of polypropylene resin; 4-10 parts of high density polyethylene; 5-15 parts of a polyolefin elastomer; 10 to 20 parts of talcum powder; 1 to 4 parts of polypropylene grafted polysiloxane; and 0.05 to 0.3 part of a beta crystal form nucleating agent. According to the polypropylene composite material disclosed by the invention, polypropylene is grafted with high-molecular-weight polysiloxane, and a specific nucleating agent is added, so that the crystal form of polypropylene is optimized, a more uniform microstructure is formed, a large spherocrystal boundary is reduced, a more uniform dispersion environment is provided for silicone molecules, local enrichment is avoided, and the mechanical property of the polypropylene composite material is improved. Therefore, the injection molding floating problem is effectively improved, and meanwhile, the high scratch resistance of the material is guaranteed. The high-performance polypropylene composite material which has excellent scratch resistance and good appearance at the same time is realized.

The invention discloses an impact-resistant cross-linked polyolefin composite cable material and a preparation method thereof, belongs to the technical field of cable material processing, and aims to solve the technical problem that the impact resistance and flame retardance of a cable material in the prior art need to be further improved. The flame-retardant polypropylene composite material specifically comprises the following components in parts by weight: 60-80 parts of modified polypropylene, 20-25 parts of a modified flame retardant, 5-8 parts of modified magnesium hydroxide, 10-15 parts of an ethylene-octylene copolymer, 1-2 parts of a chain extender, 0.5-1 part of an initiator and 8-12 parts of an auxiliary additive. The cross-linked polypropylene, the modified flame retardant, the modified magnesium hydroxide, the ethylene-octylene copolymer and the auxiliary additive are added into a double-screw extruder for melt extrusion and granulation to obtain the composite cable material, so that the impact resistance and flame retardance of the cable material are improved, and the toughness of the cable material is also improved.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The polypropylene composite material is prepared from the following components in parts by weight: 44 to 60 parts of polypropylene resin, 5 to 15 parts of ethylene-vinyl alcohol copolymer, 10 to 25 parts of modified talcum powder and 15 to 25 parts of toughening agent. The polypropylene resin, the ethylene-vinyl alcohol copolymer, the modified talcum powder, the flexibilizer and the antioxidant are compounded, the compatibility of all the components is good, the compounded material has good bonding performance with other plastic materials (such as PMMA), meanwhile, the tensile strength and impact strength of the polypropylene composite material can be effectively improved, and the service life of the polypropylene composite material is prolonged. The requirements of automobile decorative parts on the adhesive property, the rigidity and the toughness can be met.

A composite material includes a plurality of polypropylene sheet layer unit groups that are sequentially stacked; each polypropylene sheet layer unit group comprises at least one of the same or different polypropylene sheet layer units, the structure of each polypropylene sheet layer unit is BiAiB′i; the structure of the polypropylene composite material is . . . i-th group, . . . second group, first group, second group, . . . i-th group, . . . ; the melting point of polypropylene composition Ai is greater than the melting point of polypropylene compositions Bi and B′i; and the average value of the melting points of all outer layers in the i-th group is greater than the average value of the melting points of all outer layers in an (i-1)th group. The polypropylene composite material has a very good tensile property and very good impact resistance, and also has good interlayer stripping strength at a relatively low hot-pressing temperature.

The invention relates to a high-fluidity injection molding polypropylene composite additive, which belongs to the technical field of high polymer material modification, and through the synergistic effect of a plurality of additives, on the premise of keeping the basic mechanical properties and thermal properties of polypropylene, the melt flow rate is obviously improved, and the processability is improved. Meanwhile, the problems of unbalanced performance, complex adding system and the like in the prior art are solved, and the effect is remarkable.

The invention discloses a high-rigidity and high-toughness polypropylene composite material and a preparation method thereof, the high-rigidity and high-toughness polypropylene composite material comprises 55-70 g of homo-polypropylene, 10-20 g of anti-impact co-polypropylene, 18-25 g of surface modified talcum powder, 3-6 g of chopped glass fiber, 8-12 g of ethylene-octylene copolymer, 3-5 g of maleic anhydride grafted polypropylene, 0.5-1.0 g of polyethylene wax, and 0.3-0.5 g of an antioxidant 1010 and 168 (1: 1) mixture. The invention realizes the following effects: 1, a robust rigid-tough balance design: a reinforcing system with high-content talcum powder as a main body and low-content glass fiber as an auxiliary is adopted to cooperate with a POE (ethylene-octylene copolymer) flexibilizer, so that good low-temperature impact toughness is maintained while the bending modulus stably reaches 2500MPa or above; 2, interface compatibility optimization: the interface combination of the inorganic filler and the matrix is improved through PP-g-MAH, and the dispersity and the mechanical property stability are improved; and 3, process control: through optimized temperature and vacuum degree control, degradation is prevented, good performance reproducibility is ensured, and industrial production is easy.

The invention relates to the technical field of high polymer material modification, in particular to a top whitening resistant polypropylene composite material as well as a preparation method and application thereof. The top whitening resistant polypropylene composite material is prepared from the following components in parts by weight: 60 to 80 parts of polypropylene resin, 20 to 30 parts of talcum powder, 5 to 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 0.1 to 0.5 part of beta crystal form nucleating agent, 3 to 8 parts of maleic anhydride grafted polypropylene, 0.3 to 1 part of composite antioxidant and 0.5 to 2 parts of zinc stearate. Through the synergistic effect of the hydrogenated styrene-butadiene-styrene block copolymer toughening system and the beta crystal form nucleating agent in a specific formula, high rigidity (the filling amount of talcum powder reaches 20-30 parts) is kept, and meanwhile, the top whitening resistance of the composite material is remarkably improved; the method is suitable for parts such as automobile dashboards and door plates which have strict requirements on surface quality.

The embodiment of the invention discloses a preparation method of flame-retardant fiber, which comprises the following steps: mixing a matrix material, a flame retardant, a compatilizer and a coupling agent to form a premix, the matrix material being polypropylene fragments or particles; putting the premix into a double-screw extruder to generate flame-retardant polypropylene composite material particles; the flame-retardant polypropylene composite material particles are subjected to chemical crosslinking, melting, spinning, cooling, stretching and winding to generate flame-retardant fibers.

The invention discloses a bio-based degradable continuous fiber reinforced polypropylene composite material and a preparation method thereof, and belongs to the technical field of high polymer material modification. The bio-based degradable continuous fiber reinforced polypropylene composite material is prepared from the following raw materials in parts by mass: 50 to 70 parts of polypropylene resin, 20 to 40 parts of bio-based degradable fiber, 5 to 10 parts of compatilizer, 1 to 3 parts of coupling agent and 0.5 to 2 parts of auxiliary agent. The bio-based degradable fiber is subjected to pretreatment and surface modification, and the compatilizer is added, so that the compatibility and interface bonding force of the bio-based degradable fiber and a polypropylene matrix are improved, the composite material has excellent mechanical properties and environmental protection performance, and the preparation method is simple and suitable for industrial production.

The invention provides a high-gloss antistatic polypropylene composite material as well as a preparation method and application thereof, and relates to the technical field of high-performance polypropylene materials. The polypropylene composite material provided by the invention comprises the following components in parts by weight: 70-89 parts of polypropylene; 8-20 parts of a composite conductive filler; 2-8 parts of a compatilizer; 0.4 to 1 part of an antioxidant; 0.3 to 1 part of a lubricant; wherein the composite conductive filler comprises a graphene coated mica sheet and an ionic liquid functionalized carbon nanotube in a mass ratio of (1.5-2): 1. Through the composite conductive filler and the structural design, the antistatic property, the mechanical property and the surface glossiness of the polypropylene material can be improved.

The invention relates to the technical field of flame-retardant high polymer materials, in particular to a high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material and a preparation method thereof. The invention provides a high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material. The high-temperature-resistant and high-humidity-resistant flame-retardant polypropylene composite material consists of polypropylene, a mixed silane modified intumescent flame retardant, a flame-retardant aid NOR 116 and a compatilizer According to the invention, bis [3-(trimethoxysilyl) propyl] amine / triacetoxyvinyl silane is mixed to modify an intumescent flame retardant, which is composed of piperazine pyrophosphate as a main flame retardant and melamine polyphosphate, aluminum hypophosphite or aluminum diethylphosphinate as a secondary flame retardant; a plurality of active silicon hydroxyl sites after silane hydrolysis are mixed, and single flame retardants are connected together to form a macromolecular intumescent flame retardant, so that the modified intumescent flame retardant is still difficult to migrate or separate out from a polypropylene matrix even under high-temperature and high-humidity conditions, and the weather resistance of flame-retardant polypropylene is greatly improved.

The invention relates to the technical field of modified polypropylene composite materials, in particular to a polypropylene composite material for thin-wall injection molding and a preparation method thereof.The polypropylene composite material is prepared from 70-85 parts of polypropylene, 1-15 parts of toughened branched resin, 3-5 parts of maleic acid copolymer, 5-10 parts of inorganic filler, 0.1-0.5 part of antioxidant and 0.1-0.5 part of light stabilizer; the toughened branched resin comprises carboxyl-terminated hyperbranched polyester and methoxyl polyethylene glycol, and the mass ratio of the carboxyl-terminated hyperbranched polyester to the methoxyl polyethylene glycol is 1: (2-4). According to the invention, impact energy is dispersed by toughening a branched structure in the branched resin, the energy absorption capacity is enhanced by an mPEG flexible chain, the impact toughness of the polypropylene composite material is remarkably improved through the synergistic effect of the two, and meanwhile, the tensile strength is maintained. The inorganic filler is matched to enhance the rigidity of the polypropylene composite material, so that the balance of toughness and rigidity is realized.

The invention discloses a modified bamboo fiber reinforced polypropylene composite material and a preparation method thereof, and belongs to the field of polypropylene composite materials, the modified bamboo fiber reinforced polypropylene composite material is characterized by comprising the following raw materials by mass: 1-10 parts of modified bamboo fiber, 80-90 parts of polypropylene, and 1-5 parts of a compatilizer. The modified bamboo fiber is prepared by modifying the surface of bamboo fiber by using acetic anhydride as an acetylation reagent and concentrated sulfuric acid and glacial acetic acid as a solvent system. Through acetylation modification of the bamboo fiber, the surface hydrophobic effect of the bamboo fiber is greatly improved, the bamboo fiber adapts to a polypropylene polymer non-polar material, and the interfacial compatibility between the bamboo fiber and polypropylene is improved. Fine fibers can be separated from the modified bamboo fibers through two screw extrusion processes under the shearing action of the screws and are uniformly dispersed in a polypropylene matrix, the fine fibers have the effect of a heterogeneous nucleating agent on polypropylene, the reinforcing effect of the bamboo fibers on the polypropylene is improved, and the composite material is endowed with more excellent mechanical performance and thermal stability.

The invention belongs to the technical field of modified plastics, and particularly relates to a high-reflection low-transmittance polypropylene composite material as well as a preparation method and application thereof. The invention provides a novel polypropylene composite material formula, which comprises homo-polypropylene, precipitated barium sulphate, hollow glass beads, maleic anhydride grafted polypropylene and a hyperbranched polymer dispersant, through selection and synergistic effect of the specific components, the reflectivity of the obtained polypropylene composite material is significantly improved, the light transmittance is greatly reduced, and the polypropylene composite material has a good application prospect. Good mechanical properties and high-whiteness surface appearance are kept, and the high-whiteness optical fiber can be widely applied to the field of various optical products.

The invention discloses a modified polypropylene composite material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials, and the modified polypropylene composite material is prepared by introducing a surface-activated two-dimensional functional filler, constructing a multiphase toughening system, designing a unique interface self-adaptive dynamic cross-linked network and combining a supercritical carbon dioxide assisted reactive extrusion process. And the technical bottlenecks of the traditional polypropylene composite material in the aspects of dimensional stability, rigidity-toughness balance and multifunctional integration are systematically solved. The composite material prepared by the invention has extremely low molding shrinkage rate (lower than 0.1%), excellent mechanical properties, efficient halogen-free flame retardance (UL-94V-0 level) and controllable antistatic performance. The preparation method is scientific in technological process and high in in-situ reaction efficiency, the efficient, continuous and green preparation process is achieved, and the method has remarkable industrial application value in the high-end fields of new energy automobiles, precision electronics, rail transit and the like.

The invention relates to the field of polypropylene composite materials, and particularly discloses a high-performance polypropylene composite material and a preparation method thereof. The high-performance polypropylene composite material is prepared from the following raw materials in parts by weight: 80 to 90 parts of polypropylene, 10 to 20 parts of polyethylene, 5 to 15 parts of glass fiber, 2 to 5 parts of nano clay, 0.5 to 1 part of coupling agent, 5 to 8 parts of potassium titanate whisker, 3 to 5 parts of heat-conducting filler and 1 to 3 parts of compatilizer. Through the synergistic effect of all the components, the prepared polypropylene composite material can be promoted to have relatively good strength and toughness, and meanwhile, the polypropylene material is endowed with heat-conducting property.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof. The polypropylene composite material comprises the following raw materials: polypropylene and an organic semiconductor master batch, the polypropylene composite material is prepared by adding the organic semiconductor master batch into the polypropylene, the polypropylene composite material is used for preparing the BOPP capacitor film, and then the BOPP capacitor film is used for preparing the thin-film capacitor, so that the high-temperature resistance of the thin-film capacitor can be remarkably improved.

The invention discloses a polypropylene composite material with high dielectric constant, high strength and high modulus as well as a preparation method and application thereof, and belongs to the technical field of polymer composite materials. According to the composite material, homo-polypropylene is used as a matrix and matched with a high-dielectric-constant composite filler, a modified reinforcing filler and a functional additive, and through reasonable component design and process optimization, the dielectric property and the mechanical property are synergistically improved. Wherein the barium titanate-graphene with the core-shell structure is used as a high-dielectric-constant composite filler, and an efficient dielectric path can be constructed in a polypropylene matrix; the epoxy resin modified chopped glass fiber can significantly enhance the mechanical strength and modulus of the material; the maleic anhydride grafted polypropylene effectively improves the interfacial compatibility of the filler and the matrix. The dielectric constant (10GHz) of the prepared composite material is greater than or equal to 8, the tensile strength is greater than or equal to 60 MPa, and the bending modulus is greater than or equal to 4000 MPa. The composite material has excellent dielectric properties and mechanical properties, and can be widely applied to the fields of electronic appliances, high-frequency communication, new energy automobiles and the like.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polypropylene composite material as well as a preparation method and application thereof. The polypropylene composite material is prepared from the following raw materials: polypropylene and a synergist, the synergist is prepared from the following raw materials: octachlorophosphazene and 2, 4 '-dihydroxybenzophenone. The phosphorus-nitrogen cyclic structure and the side chain phosphorus-chlorine bond of the octachlorophosphazene promote the octachlorophosphazene to easily react with 2, 4 '-dihydroxybenzophenone to generate a synergist, and the synergist not only has high flame retardant efficiency in polypropylene, but also can convert ultraviolet light of medium and long wave bands into harmless heat energy, has good ultraviolet light resistance, and can be used as a flame retardant for polypropylene. The material can be widely applied to the field of shell materials of household appliances, charging piles and other electronic appliances.

The invention provides a high-performance polypropylene plastic bucket material and a preparation method thereof, and belongs to the field of high-performance polypropylene plastic. The high-performance polypropylene plastic bucket material is prepared from the following raw materials in parts by weight: 100 parts of polypropylene resin, 8 to 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 3 to 8 parts of modified nano silicon dioxide, 2 to 5 parts of epoxy functionalized polypropylene, 3 to 10 parts of ethylene-vinyl acetate copolymer, 0.2 to 0.5 part of beta crystal form nucleating agent and 1.5 to 4 parts of hyperbranched dynamic cross-linking agent, the composition comprises the following components in parts by weight: 1-4 parts of maleic anhydride grafted polypropylene, 0.3-0.6 part of an antioxidant, 0.2-0.4 part of a hindered amine light stabilizer and 0.1-0.3 part of an ultraviolet light absorber. By constructing a multi-component and multi-network synergistically enhanced polypropylene composite material system, the problem that rigidity, toughness, long-term stability and weather resistance are difficult to consider at the same time is essentially and synergistically solved.

The invention discloses a preparation method and application of a modified glass fiber reinforced polypropylene composite material, and belongs to the field of high polymer materials. The modified glass fiber reinforced polypropylene composite material comprises the following raw materials in parts by weight: 33-76 parts of polypropylene resin; 20 to 50 parts of modified glass fiber; 2 to 8 parts of POE resin; 2-5 parts of a styrene thermoplastic elastomer maleic anhydride graft; the preparation method of the modified glass fiber comprises the following steps: dissolving a coupling agent containing double bonds in a solvent, adding glass fiber, taking out and drying to obtain glass fiber with double-bond functional groups on the surface; and adding the glass fiber containing the double-bond functional group on the surface, maleic anhydride, ethoxyamide wax and an initiator into a reaction kettle for grafting reaction, taking out after the reaction is finished, and drying to obtain the surface-coated modified glass fiber.

The invention discloses a low-odor regenerated polypropylene composite material as well as a preparation method and application thereof, and belongs to the technical field of polymer composite materials. Comprising the following raw materials in parts by mass: 10-78 parts of polypropylene, 10-50 parts of regenerated polypropylene, 0-20 parts of an inorganic filler, 2-15 parts of a toughening agent, 0.5-2 parts of an isocyanate coupling agent, 1-3 parts of an odor adsorbent, 0.1-0.5 part of an initiator and 0.5-2 parts of a processing aid. By adding an isocyanate coupling agent, in the extrusion granulation process, an isocyanate group (-NCO) and hydroxyl (-OH) or amino (-NH2) or carboxyl (-COOH)-containing micromolecules remaining in regenerated polypropylene or generated in the extrusion process are subjected to an addition reaction to form urea bonds or urethane bonds, and a plurality of micromolecules are cross-linked to form a macromolecular network; the small molecules with odor are captured, so that the content of emitted substances is reduced; in addition, small molecules are further adsorbed by cooperatively utilizing an odor adsorbent, and the low-emission regenerated polypropylene composite material is prepared.

The invention discloses a conductive carbon black composite material and application thereof in polypropylene plastic, and aims to solve the problems that carbon black in a traditional conductive carbon black / polypropylene composite material is easy to agglomerate, a dispersing agent is single in function and easy to migrate, polypropylene is easy to degrade and the like. The composite material is prepared by mixing 18-22 parts of conductive carbon black VXC72 and 9-11 parts of a lignin-polyethylene glycol graft at a high speed, wherein the graft is obtained by reacting lignin, polyethylene glycol and the like. And carrying out drying, mixing, extrusion and other processes on the mixture, polypropylene particles and the like in proportion to prepare the polypropylene plastic. The melt flow rate of the product is improved by more than 60%, the retention rate of tensile strength after 1000h of ultraviolet aging exceeds 80%, and when the filling amount of carbon black is 8-10%, the volume resistivity is stabilized at 10-10 omega.cm, the notch impact strength is improved by 40%, the anti-aging life is prolonged by more than two times, and the cost of the auxiliary agent is reduced.