Graphene and carbon black modified PP multifunctional conductive master batch

Abstract

The invention discloses a graphene and carbon black modified PP multifunctional conductive master batch. The preparation method of the graphene and carbon black modified PP multifunctional conductive master batch comprises the following steps: blending graphene powder, carbon black PP slices and other auxiliary raw materials for preparing the master batch, melting, and granulating by using a twin-screw machine. The conductive master batch material is prepared from the following components in percentage by mass: 40-45% of carrier resin PP, 20-25% of graphene powder, 15-20% of superconductive nano carbon black, 5% of a lubricant, 2% of an antioxidant, 3% of a dispersant and 2-6% of a flexibilizer. The prepared graphene and carbon black modified PP multifunctional conductive master batch has the resistance of 10, and has the functions of static resistance, far infrared resistance, 99% antibacterial / bacteriostasis, ultraviolet resistance, negative ion resistance, mite removal and the like. The conductive fiber can be widely applied to all walks of life of national defense, military industry and civil use and daily life of people, and has a very wide application prospect.

Description

Technical Field

[0001] The invention relates to the field of high-tech technology, and specifically describes that graphene and carbon black are used to modify PP materials to make them multifunctional and conductive. Background Art

[0002] Graphene is a two-dimensional crystal, composed of carbon atoms in sp2 hybrid orbits, forming a hexagonal honeycomb lattice of two-dimensional carbon nanomaterials. Graphene has excellent optical, electrical, and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine, and drug delivery. It is called "black gold" and "the king of new materials." Graphene and carbon black modified PP multifunctional conductive products: with high-quality antistatic, antibacterial / antibacterial rate of 99%, far-infrared, anti-ultraviolet, negative ion, mite removal and other functions. It has very broad application prospects in defense and military industry, various civilian industries: light industry, construction, electrical appliances, automobiles, packaging, medical equipment and other fields. Summary of the invention

[0003] The purpose of the present invention is to provide graphene and carbon black modified PP multifunctional conductive masterbatch.

[0004] The technical solution adopted by the present invention to solve the technical problem is: in terms of mass percentage, the conductive masterbatch material is composed of 40-45% of carrier resin PP, 20-25% of graphene powder, 15-20% of superconducting nano carbon black, 5% of lubricant, 2% of antioxidant, 3% of dispersant and 2-6% of toughening agent.

[0005] The carrier resin is PP chips.

[0006] The graphene is black graphene powder.

[0007] The filler is superconducting nano carbon black.

[0008] The lubricant is PE wax.

[0009] The antioxidant is antioxidant 1010.

[0010] The dispersant is YY-502A conductive and thermal conductive masterbatch super dispersant.

[0011] The toughening agent is POE.

[0012] The preparation method of the above-mentioned graphene and carbon black modified PP multifunctional conductive masterbatch comprises the following steps: Weigh PP chips, graphene powder, superconducting nano carbon black, PE wax, antioxidant, dispersant, toughening agent and other auxiliary materials according to weight ratio. Pour into high-speed mixer and mix and stir to make the materials evenly mixed and slightly polymerized. The temperature of high-speed mixer is 70-80 degrees and the stirring time is 20-30 minutes. After cooling for 10 minutes, crush in crusher to obtain well-mixed and evenly mixed materials.

[0013] The uniformly mixed materials obtained above are conveyed to a twin-screw extruder and melt-mixed in a main feeding hopper. The set temperature of the extruder is 200-260°C. After melt extrusion, drawing, cutting and drying in the twin-screw extruder, graphene and carbon black PP modified multifunctional conductive masterbatch is obtained.

[0014] The effective effects of the present invention are: it has the advantages of being suitable for preparing a variety of conductive products: graphene, carbon black modified PP multifunctional conductive masterbatch, with high-quality antistatic, antibacterial / antibacterial rate of 99%, far infrared, anti-ultraviolet, negative ion, mite removal and other functions. It has very broad application prospects in the fields of national defense, military industry, civil industry, light industry, construction, electrical appliances, automobiles, packaging, medical equipment, etc. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below in conjunction with specific implementation steps.

[0016] Implementation steps Graphene and carbon black modified PP multifunctional conductive masterbatch. In terms of mass percentage, it is composed of 45% carrier resin PP (polyamide), 23% graphene powder (particle size (D50) 3-6μm), superconducting nano carbon black (oil absorption value 170ml / 100g, STSA specific surface area 130m 2 / g. PH value 7.5, 45μm sieve residue ﹤25ppm) 15%, polyethylene wax (PE-WAX) 5%, antioxidant 10102%, dispersant (YY-502A) 2%, toughening agent POE 6%, other additives are silane coupling agent 2%. The composition is a graphene, carbon black modified PP multifunctional conductive masterbatch.

[0017] Preparation method: Weigh PP chips, graphene powder, superconducting nano carbon black, PE wax, antioxidant, dispersant, toughening agent and other coupling agent materials according to weight ratio. Pour into high-speed mixer and mix and stir to make the materials evenly mixed and slightly polymerized. The temperature of high-speed mixer is 70-80 degrees and the stirring time is 20-30 minutes. After cooling for 10 minutes, crush in crusher to obtain well-mixed and evenly mixed materials.

[0018] The above mixed materials are transported to the twin-screw extruder, melted and mixed in the main feeding hopper, and the set temperature of the extruder is 200-260℃. After the twin-screw extruder is melted, extruded, stretched, cooled, cut, dried, and made into particles, graphene and carbon black PP modified multifunctional conductive masterbatch are obtained. Then they are put into the oven for drying to consolidate the conductivity. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 : Graphene, carbon black PP modified multifunctional conductive masterbatch. Figure 2 : Graphene, carbon black PP modified multifunctional conductive masterbatch (resistance 10 to the fourth power ohm).

Claims

1. Claims Graphene and carbon black modified PP multifunctional black conductive masterbatch. Features: The composition of the raw material is as follows according to mass percentage: the raw material is composed of carrier resin PP40-45%, graphene powder 15-20%, filler superconducting nano carbon black 20-25%, lubricant 5%, antioxidant 2%, dispersant 3% and toughening agent 2-6%.

2. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The carrier resin PP (polypropylene) slices are: melting point 164~170℃, softening point (Vicat) 150℃, particle appearance ≤10 / kg, melt flow rate 2.0-4.0g / 10min, isotactic index % ≥95, tensile yield strength MPa ≥ 31, powder ash ppm ≤300, flexural modulus MPa ≥ 1200, yellow index ≤4, cantilever beam impact strength 23℃ J / m ≥ 28, Fisheye: 0.8mm≤15 / 1520cm 2 , 0.4mm≤40pcs / 1520cm 2 ,Polymer type:homopolymer.

3. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: Graphene black powder, particle size (D50) is 3-6μm, bulk density is 0.15-0.20g / ml, moisture content is ≤1.5%, carbon content is more than 95%, graphene microsheet thickness is less than 15nm, powder sheet resistance is 45mΩ·cm.

4. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The filler is superconducting nano carbon black: oil absorption value 170ml / 100g, STSA specific surface area 130m / g, pH value 7.5, 45μm sieve residue <25ppm, sulfur content <1%, ash content <0.15%.

5. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The lubricant is PE wax, which is polyhexene wax (PE-WAX), a kind of ultra-low molecular weight polyhexene, with a melting point of 90-100°C, a viscosity of <20mPa.s, a needle penetration of <5*10-1nm, and a density of 0.92-0.96g / cm3.

6. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The antioxidant is antioxidant 1010, chemical name: pentaerythritol tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], melting point: 100-115° C., content: ≥98%, density: 1.

15.

7. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The dispersant is YY-502A conductive and thermal conductive masterbatch super dispersant, which improves fluidity and mechanical properties. Melting point: low melting point ≥70°C, high melting point ≥130°C, viscosity: 300-400cps, decomposition temperature: ≥280°C, density: ≤0.92g / cm3.

8. The graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The toughening agent is POE. POE refers to polyolefin thermoplastic elastomer, a high-performance polyolefin, which can be used as a toughening agent. Density: 0.93g / cm3, melt index 4-6g / 10min, grafting rate 1.2%, moisture content 0.05%. Main function: toughening and compatibility.

9. The method for preparing graphene and carbon black modified PP multifunctional conductive masterbatch as claimed in claim 1, characterized in that: The following steps are involved: (1) Weigh PP chips, graphene powder, superconducting nano carbon black, PE wax, antioxidant dispersant, dispersant, toughening agent and other auxiliary materials as needed according to the weight ratio.

10. Pour into a high-speed mixer, mix and stir, and polymerize slightly. The temperature of the high-speed mixer is 70-80 degrees and the stirring time is 20-30 minutes. After cooling for 10 minutes, crush it in a plastic crusher to obtain a well-mixed and uniform material.

11. (2) The above-mentioned uniformly mixed materials are conveyed to a twin-screw extruder, melt-mixed in the main feeding hopper, and the set temperature of the extruder is 200-260°C. After melt extrusion, drawing, cutting, and drying in the twin-screw extruder, graphene and carbon black modified PP multifunctional black conductive masterbatch is obtained. Then, the materials are put into an oven for drying to consolidate the conductivity.

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