CN113698757A - Preparation method of high-strength conductive polymer nanocomposite - Google Patents
Preparation method of high-strength conductive polymer nanocomposite Download PDFInfo
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Abstract
The invention belongs to the field of preparation of nano composite materials, in particular to a preparation method of a high-strength conductive polymer nano composite material, which aims at the problem that the existing nano composite material has poor strength and conductivity, and provides the following scheme, which comprises the following steps: s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30-40 parts of a reinforcing agent, 5-10 parts of a toughening agent, 5-10 parts of an impact resistance agent and 1-5 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer, the strength and the conductivity of the material are greatly improved, and the preparation method is simple.
Description
Technical Field
The invention relates to the technical field of preparation of nano composite materials, in particular to a preparation method of a high-strength conductive polymer nano composite material.
Background
The nano composite material is a composite system which takes a matrix such as resin, rubber, ceramic, metal and the like as a continuous phase, takes modifiers such as nano-sized metal, semiconductor, rigid particles and other inorganic particles, fibers, carbon nanotubes and the like as a dispersed phase, and uniformly disperses the modifiers in the matrix material by a proper preparation method to form a phase containing the nano-sized material, and the material of the system is called nano composite material.
The existing nano composite material has poor strength and conductivity, so a preparation method of a high-strength conductive polymer nano composite material is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects of poor strength and poor conductivity of a nano composite material in the prior art, and provides a preparation method of a high-strength conductive polymer nano composite material.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a high-strength conductive polymer nano composite material comprises the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30-40 parts of a reinforcing agent, 5-10 parts of a toughening agent, 5-10 parts of an impact resistance agent and 1-5 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing, metering the amount of raw materials entering the mixing device, recording data, discharging the mixture after mixing is finished, metering the discharged mixture, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, and finally adding graphene and acetylene black and stirring uniformly to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
Preferably, in S1, raw materials and nano copper wires are prepared, and the raw materials include the following materials in parts by weight: the conductive glass comprises, by weight, 35 parts of a reinforcing agent, 7 parts of a toughening agent, 7 parts of an impact resistance agent and 3 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black.
Preferably, in S2, adding carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano-silica, and quartz sand into a mixing device, stirring and mixing at a mixing speed of 300-.
Preferably, in S3, the nano calcium carbonate, the zinc oxide, the polyvinyl butyral, and the polybutadiene rubber are placed in a mixing device, stirred and mixed at a mixing speed of 350-.
Preferably, in the step S4, the ethylene propylene rubber, the high-density polyethylene, the polypropylene and the methyl methacrylate-butadiene-styrene copolymer are placed into a mixing device for stirring and mixing, wherein the mixing speed is 300-350r/min, and the mixing time is 20-30 min.
Preferably, in S5, the mixture obtained in S2 and S3 and the mixture obtained in S4 are stirred and mixed, and finally, the graphene and the acetylene black are added and stirred uniformly, wherein the mixing speed is 500-600r/min, and the mixing time is 50-60min, so as to obtain the mixed material.
Preferably, in S6, the step of manufacturing the nano copper wire mesh structure is as follows: adding nano copper wires into water, fully oscillating and dissolving, then adding a trihydroxymethyl aminomethane solution with the concentration of 2-5 mg/mL, adjusting the pH to 8.5 by using dilute hydrochloric acid, adding a dopamine solution with the concentration of 1-4 mg/mL, and fully stirring and reacting for 5-8 hours to obtain a nano copper wire solution coated with polydopamine; injecting the poly-dopamine-coated nano copper wire solution into a polytetrafluoroethylene tubular mold, freezing in liquid nitrogen at-196 ℃, placing the poly-dopamine-coated nano copper wire solution into a freeze dryer after the poly-dopamine-coated nano copper wire solution is completely frozen, and drying for 48-96 hours at the temperature of-10 ℃ to-50 ℃ and under the vacuum degree of 1.3-13 Pa to form a nano copper wire grid structure.
Preferably, in S3, the nano calcium carbonate, the zinc oxide, the polyvinyl butyral, and the polybutadiene rubber are placed in a mixing device, and are stirred and mixed, the stirring speed is monitored during stirring, the monitored stirring speed is compared with the set stirring speed, and an alarm is given if an error occurs in the comparison.
Preferably, in S2, the carbon fiber, the alumina fiber, the magnesium borate whisker, the polyurethane resin, the nano silica, and the quartz sand are weighed, the weighing data is recorded as data a, the discharged mixture is weighed, the weighing data is recorded as data B, and the data a is subtracted from the data B to obtain a value, which is the loss amount.
Preferably, in S6, the mixture is heated, the temperature of the mixture is monitored by a temperature sensor, and the monitored data is displayed on a display.
Carbon fiber: a specialty fiber consisting of carbon. The graphite fiber has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, is fibrous and soft in appearance, can be processed into various fabrics, and has high strength and modulus along the fiber axis direction due to the preferred orientation of the graphite microcrystalline structure along the fiber axis. The carbon fibers have a low density and thus a high specific strength and a high specific modulus. The carbon fiber is mainly used as a reinforcing material to be compounded with resin, metal, ceramic, carbon and the like to manufacture an advanced composite material. The specific strength and specific modulus of the carbon fiber reinforced epoxy resin composite material are highest in the existing engineering materials;
alumina fiber: the alumina fiber is a polycrystal inorganic fiber with alumina as the main component, and the main crystal form can be gamma-, delta-, theta-or alpha-alumina, and usually, the alumina fiber also contains about 5 percent of silicon dioxide for stabilizing the crystal phase and inhibiting the growth of crystal grains at high temperature. The alumina fiber is one of the latest super light high temperature heat insulating materials at home and abroad at present, soluble aluminum and silicon salt are prepared into colloidal solution with certain viscosity by a high-tech 'sol-gel' method, the solution is spun into a fiber blank by high-speed centrifugation, and then is converted into Al-Si alumina polycrystalline fiber by the processes of dehydration, drying and medium-high temperature heat treatment crystallization, and the main crystalline phase of the Al-Si alumina polycrystalline fiber is mainly corundum phase and a small amount of mullite phase, the chemical components are Al2O3(95%) + SiO2(5%), the fiber diameter is 3-7um, the monofilament length is 10-150mm, the appearance is white, smooth, soft and rich in elasticity, especially like absorbent cotton, the alumina fiber integrates the characteristics of crystal materials and fiber materials, the use temperature reaches 1450-1600 ℃, the melting point reaches 1840 ℃, the heat resistance stability is better, and the heat conductivity is 1/6 of common refractory bricks, the volume weight is only 1/25, the energy saving rate reaches 15-45%, the wettability of the alumina fiber and the metal matrix is good, the interface reaction is small, the mechanical property, the wear resistance and the hardness of the composite material are improved, and the thermal expansion coefficient is reduced;
magnesium borate whisker: magnesium borate whisker was first discovered in 1953 as a natural mineral, "suanite", in south korea. By the 60's of the 20 th century, flaky and prismatic magnesium borate crystals have been synthesized. The price of the composite material is only 1/20-1/30 of silicon carbide whiskers, the composite material is one of the most promising whiskers of the current composite materials, and the composite material has excellent performances of light weight, high strength, high elastic modulus, high hardness, high temperature resistance, corrosion resistance, good mechanical strength, good electrical insulation and the like;
polypropylene: is a polymer of propylene by addition polymerization. Is white wax-like material, and has transparent and light appearance. The chemical formula is (C3H6) n, the density is 0.89-0.91 g/cm3, the flame retardant is flammable, the melting point is 189 ℃, the softening temperature is about 155 ℃, and the use temperature range is-30-140 ℃. Can resist corrosion of acid, alkali, salt solution and various organic solvents at the temperature of below 80 ℃, and can be decomposed at high temperature and under the action of oxidation. The polypropylene is widely applied to the production of fiber products such as clothes, blankets and the like, medical instruments, automobiles, bicycles, parts, conveying pipelines, chemical containers and the like, is also used for packaging foods and medicines, and is a semi-crystalline thermoplastic plastic. The material has high impact resistance, high mechanical property and high toughness, and resists corrosion of various organic solvents and acid and alkali;
high density polyethylene: high Density Polyethylene (HDPE), as a white powder or granular product. The material is nontoxic and odorless, the crystallinity is 80-90%, the softening point is 125-135 ℃, and the use temperature can reach 100 ℃; the hardness, tensile strength and creep property are better than those of low-density polyethylene; the wear resistance, the electrical insulation, the toughness and the cold resistance are good; the chemical stability is good, and the paint is not dissolved in any organic solvent at room temperature, and is resistant to corrosion of acid, alkali and various salts;
polyurethane resin: polyurethane (PU), the full name of which is polyurethane, is a high molecular compound. This product was produced in 1937 by Otto Bayer et al. Polyurethanes fall into the two main categories of polyester and polyether. They can be made into polyurethane plastics (mainly foamed plastics), polyurethane fibers (China is called spandex), polyurethane rubber and elastomers, and are used as high polymer materials with the characteristics of high strength, tear resistance, wear resistance and the like;
the nano silicon dioxide is an inorganic chemical material and is commonly called white carbon black. Due to the superfine nanometer grade and the size range of 1-100 nm, the material has a plurality of unique properties, such as optical performance of resisting ultraviolet rays, and can improve the aging resistance, strength and chemical resistance of other materials;
the methyl methacrylate-butadiene-styrene copolymer can improve the transparency and impact resistance of the polymer and has higher strength. The rigidity is high, and the enough rigidity can be kept at 85-90 ℃. Good low temperature performance and good toughness at minus 40 ℃. The transparency is excellent, the light transmittance can reach 80-90%, and the oil resistance, weak acid resistance, weak alkali resistance, transparency and ultraviolet light aging resistance are outstanding advantages;
nano calcium carbonate, which is also called ultra-fine calcium carbonate. The standard name is ultrafine calcium carbonate. The most mature industry of nano calcium carbonate application is the plastic industry mainly applied to high-grade plastic products. Can improve the rheological property of the plastic master batch and improve the moldability of the plastic master batch. The composite material used as plastic filler has the functions of toughening and reinforcing, improves the bending strength and the bending elastic modulus of the plastic, the heat distortion temperature and the dimensional stability, and also endows the plastic with the heat hysteresis property. The nano calcium carbonate is used in ink products and shows excellent dispersibility and transparency, excellent gloss, excellent ink absorptivity and high drying property. The nano calcium carbonate is used as an ink filler in resin type ink, has the advantages of good stability, high glossiness, strong adaptability and the like, does not influence the drying performance of printing ink, and has the functions of toughening and reinforcing;
zinc oxide: is an inorganic substance, has a chemical formula of ZnO, and is an oxide of zinc. Is insoluble in water and soluble in acid and strong base. Zinc oxide is a commonly used chemical additive, and is widely applied to the manufacture of products such as plastics, silicate products, synthetic rubber, lubricating oil, paint, coating, ointment, adhesive, food, batteries, flame retardant and the like. The zinc oxide has large energy band gap and exciton constraint energy, high transparency and excellent normal temperature luminous performance, and is applied to products such as liquid crystal displays, thin film transistors, light emitting diodes and the like in the semiconductor field. In addition, the micro-particulate zinc oxide also begins to function in related fields as a nano material, which can improve corrosion resistance and tear resistance;
polybutadiene rubber: polybutadiene rubber is a general synthetic rubber obtained by polymerizing 1, 3-butadiene as a monomer, high cis-butadiene rubber is firstly synthesized in the United states in 1956, and industrial production of cis-butadiene rubber is realized in 1967 in China. In the synthetic rubber, the output and consumption of the polybutadiene rubber are second to that of the styrene butadiene rubber, and the polybutadiene rubber can toughen the rubber;
the ethylene propylene rubber is impact resistant.
Polyvinyl Butyral (PVB) is a product of condensation of Polyvinyl alcohol and butyraldehyde under acid catalysis. The PVB molecule contains longer branched chain, so that the PVB has good flexibility, low glass transition temperature and high tensile strength and impact strength. PVB has excellent transparency, good solubility, good light resistance, water resistance, heat resistance, cold resistance and film forming property. The functional group contained in the copolymer can perform various reactions such as saponification of phthalidyl, acetification and sulfonation of hydroxyl, and has high adhesion to materials such as glass and metal (especially aluminum). Therefore, the composite material is widely applied to the fields of manufacturing laminated safety glass, adhesives, ceramic stained paper, aluminum foil paper, electrical appliance materials, glass fiber reinforced plastic products, fabric treating agents and the like, becomes an indispensable synthetic resin material and can toughen.
Quartz sand: the quartz sand is an important industrial mineral raw material and a non-chemical dangerous article, is widely used in the industries of glass, casting, ceramics and fireproof materials, ferrosilicon smelting, metallurgical flux, metallurgy, building, chemical engineering, plastics, rubber, grinding materials, filter materials and the like, and is hard and wear-resistant;
graphene: graphene (Graphene) is a new material with sp hybridized connected carbon atoms tightly packed into a single-layer two-dimensional honeycomb lattice structure. The graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, is considered to be a revolutionary material in the future, and has good toughness, high strength, excellent electric conduction and optical properties;
acetylene black: acetylene black is carbon black obtained by continuously pyrolyzing acetylene with a purity of 99% or more, which is obtained by decomposing and refining by-product gas generated during pyrolysis of calcium carbide method or naphtha (crude gasoline). The inside of the reaction furnace is heated to a temperature of 800 ℃ or higher at which acetylene decomposition starts, and then acetylene is introduced to start thermal decomposition. Because of the exothermic reaction, the reaction can proceed automatically. To obtain stable quality, the reaction temperature should be kept around 1800 ℃. The temperature in the furnace can be controlled by a water-cooling jacket of the outer cylinder of the reaction furnace. Acetylene black is used as a negative electrode material of a nickel-metal hydride battery together with chromium oxide and an electrolyte. It has more developed crystal and secondary structure than furnace carbon black, so it is also more excellent in conductivity and liquid absorption. Because of less impurities such as heavy metal, the loss caused by self-discharge is small, the lithium ion battery is mainly used for a cathode of a nickel-hydrogen battery, and a Li battery is also used, so that the lithium ion battery has extremely low resistivity and excellent electrical conductivity, thermal conductivity and antistatic effect.
Compared with the prior art, the invention has the beneficial effects that:
the carbon fiber has high temperature resistance, friction resistance, electric conduction, heat conduction and corrosion resistance, and has high strength along the fiber axis direction; the alumina fiber can improve the mechanical property, the wear resistance and the hardness of the material; the magnesium borate crystal whisker has high strength, high temperature resistance, corrosion resistance and good mechanical strength; the polyurethane resin has the characteristics of high strength, tear resistance and wear resistance; the nano silicon dioxide can improve the ageing resistance, strength and chemical resistance of the material; the quartz sand can improve the hardness and the wear resistance, and the strength of the material can be improved by using the reinforcing agent;
the nano calcium carbonate has the functions of toughening and reinforcing; zinc oxide improves corrosion resistance and tear resistance; the polyvinyl butyral has good tensile strength and impact strength, and toughness is increased; the polybutadiene rubber can toughen, the toughening agent is used, the toughness of the material can be improved, and the strength of the material can be further improved by matching with the reinforcing agent;
the ethylene propylene rubber has impact resistance; the high-density polyethylene has high hardness, tensile strength and good impact resistance; the polypropylene has high impact resistance, high mechanical property and toughness, and can resist corrosion of various organic solvents and acid and alkali; the methyl methacrylate-butadiene-styrene copolymer can improve the impact resistance of a high polymer material, has higher strength, can increase the impact resistance of the material by using an impact resistance agent, and further improves the strength of the material by matching with a reinforcing agent and a toughening agent;
the graphene has good toughness, high strength and excellent electric and optical properties, can increase the strength and toughness while increasing the electric conductivity, has extremely low acetylene black resistivity, excellent electric conductivity, heat conductivity and antistatic effect, and can greatly improve the electric conductivity of the material;
the invention greatly improves the strength and the conductivity of the material and has simple preparation method.
Drawings
Fig. 1 is a schematic structural diagram of a method for preparing a high-strength conductive polymer nanocomposite provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a method for preparing a high-strength conductive polymer nanocomposite includes the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30 parts of reinforcing agent, 5 parts of toughening agent, 5 parts of impact resistance agent and 1 part of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing at the mixing speed of 300r/min for 30min, measuring the amount of raw materials entering the mixing device, recording data, discharging the mixed materials after mixing is finished, measuring the discharged mixed materials, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing for 30min at a mixing speed of 350 r/min;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing at the mixing speed of 300r/min for 20 min;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene and acetylene black, and uniformly stirring at the mixing speed of 500r/min for 50min to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
Example two
Referring to fig. 1, a method for preparing a high-strength conductive polymer nanocomposite includes the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: the material comprises 32 parts of a reinforcing agent, 6 parts of a toughening agent, 6 parts of an impact resistance agent and 2 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing at the mixing speed of 320r/min for 32min, measuring the amount of raw materials entering the mixing device, recording data, discharging the mixed materials after mixing is finished, measuring the discharged mixed materials, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing at the mixing speed of 370r/min for 32 min;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing at a mixing speed of 310r/min for 22 min;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene and acetylene black, uniformly stirring at the mixing speed of 520r/min for 52min to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
EXAMPLE III
Referring to fig. 1, a method for preparing a high-strength conductive polymer nanocomposite includes the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 34 parts of reinforcing agent, 7 parts of toughening agent, 7 parts of impact resistance agent and 3 parts of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing at the mixing speed of 340r/min for 34min, measuring the amount of raw materials entering the mixing device, recording data, discharging the mixture after mixing is finished, measuring the discharged mixture, and calculating the loss according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing at a mixing speed of 390r/min for 34 min;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing at the mixing speed of 330r/min for 24 min;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene and acetylene black, and uniformly stirring at the mixing speed of 540r/min for 54min to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
Example four
Referring to fig. 1, a method for preparing a high-strength conductive polymer nanocomposite includes the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 38 parts of reinforcing agent, 9 parts of toughening agent, 9 parts of impact resistance agent and 4 parts of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing at a mixing speed of 380r/min for 38min, measuring the amount of raw materials entering the mixing device, recording data, discharging the mixed materials after mixing is finished, measuring the discharged mixed materials, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing at a mixing speed of 430r/min for 38 min;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing at the mixing speed of 340r/min for 28 min;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene and acetylene black, and uniformly stirring at a mixing speed of 590r/min for 57min to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
EXAMPLE five
Referring to fig. 1, a method for preparing a high-strength conductive polymer nanocomposite includes the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 40 parts of reinforcing agent, 10 parts of toughening agent, 10 parts of impact resistance agent and 5 parts of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing at the mixing speed of 400r/min for 40min, measuring the amount of raw materials entering the mixing device, recording data, discharging the mixed materials after mixing is finished, measuring the discharged mixed materials, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing at the mixing speed of 450r/min for 40 min;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing at the mixing speed of 350r/min for 30 min;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene and acetylene black, and uniformly stirring at the mixing speed of 600r/min for 60min to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
Comparative example 1
The difference from the first embodiment is that: s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30 parts of reinforcing agent, 5 parts of toughening agent, 5 parts of impact resistance agent and 1 part of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductivity enhancer comprises graphene; s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, finally adding graphene, and uniformly stirring, wherein the mixing speed is 500r/min, and the mixing time is 50min, so as to obtain a mixture;
the rest is the same as the first embodiment.
Comparative example No. two
The difference from the first embodiment is that: s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30 parts of reinforcing agent, 5 parts of toughening agent, 5 parts of impact resistance agent and 1 part of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker and polyurethane resin; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black; and S2, adding the carbon fibers, the alumina fibers, the magnesium borate whiskers and the polyurethane resin into a mixing device, stirring and mixing at the mixing speed of 300r/min for 30min, metering the amount of the raw materials entering the mixing device, recording data, discharging the mixture after mixing is finished, metering the discharged mixture, and calculating the loss according to the two sets of data.
The rest is the same as the first embodiment.
Comparative example No. three
The difference from the first embodiment is that: s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30 parts of reinforcing agent, 5 parts of toughening agent, 5 parts of impact resistance agent and 1 part of conductive reinforcing agent, wherein the reinforcing agent comprises carbon fiber, alumina fiber, magnesium borate whisker, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate and zinc oxide; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black; s3, placing the nano calcium carbonate and the zinc oxide into mixing equipment, and stirring and mixing at the mixing speed of 350r/min for 30 min;
the rest is the same as the first embodiment.
Examples of the experiments
The materials prepared in the first to fifth examples and the first to third comparative examples are tested by the method specified in GB/T16491-2008, and the test data are as follows:
the test report of the high-strength conductive polymer nanocomposite is as follows:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A preparation method of a high-strength conductive polymer nano composite material is characterized by comprising the following steps:
s1, preparing raw materials and nano copper wires, wherein the raw materials comprise the following materials in parts by weight: 30-40 parts of a reinforcing agent, 5-10 parts of a toughening agent, 5-10 parts of an impact resistance agent and 1-5 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black;
s2, adding carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand into a mixing device, stirring and mixing, metering the amount of raw materials entering the mixing device, recording data, discharging the mixture after mixing is finished, metering the discharged mixture, and calculating the loss amount according to the two sets of data;
s3, placing the nano calcium carbonate, the zinc oxide, the polyvinyl butyral and the polybutadiene rubber into a mixing device, and stirring and mixing;
s4, putting ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer into mixing equipment, and stirring and mixing;
s5, stirring and mixing the mixture obtained in S2 and S3 and the mixture obtained in S4, and finally adding graphene and acetylene black and stirring uniformly to obtain a mixture;
s6, heating the mixture to make the mixture completely in a molten state, making the nano copper wires into a nano copper wire grid structure, and then injecting the mixture into the nano copper wire grid structure to obtain the high-strength conductive polymer nano composite material.
2. The method for preparing a high-strength conductive polymer nanocomposite as claimed in claim 1, wherein in S1, raw materials and nano copper wires are prepared, wherein the raw materials comprise the following materials in parts by weight: the conductive glass comprises, by weight, 35 parts of a reinforcing agent, 7 parts of a toughening agent, 7 parts of an impact resistance agent and 3 parts of a conductive reinforcing agent, wherein the reinforcing agent comprises carbon fibers, alumina fibers, magnesium borate whiskers, polyurethane resin, nano silicon dioxide and quartz sand; the toughening agent comprises nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber; the impact resistance agent comprises ethylene propylene rubber, high-density polyethylene, polypropylene and methyl methacrylate-butadiene-styrene copolymer; the conductive reinforcing agent comprises graphene and acetylene black.
3. The method as claimed in claim 1, wherein in S2, the carbon fiber, the alumina fiber, the magnesium borate whisker, the polyurethane resin, the nano silica, and the quartz sand are added into a mixing device, stirred and mixed at a mixing speed of 300-.
4. The method as claimed in claim 1, wherein in S3, the nano calcium carbonate, zinc oxide, polyvinyl butyral and polybutadiene rubber are mixed in a mixing device at a mixing speed of 350-.
5. The method as claimed in claim 1, wherein in S4, the ethylene propylene rubber, the high density polyethylene, the polypropylene, and the methylmethacrylate-butadiene-styrene copolymer are mixed by stirring in a mixing device at a mixing speed of 300-350r/min for 20-30 min.
6. The method as claimed in claim 1, wherein in S5, the mixture obtained in S2 and S3 and the mixture obtained in S4 are mixed by stirring, and finally the graphene and the acetylene black are added and stirred uniformly, with the mixing speed of 500-600r/min and the mixing time of 50-60min, to obtain the mixture.
7. The method for preparing a high-strength conductive polymer nanocomposite as claimed in claim 1, wherein in S6, the step of making the nano copper wire lattice structure is as follows: adding nano copper wires into water, fully oscillating and dissolving, then adding a trihydroxymethyl aminomethane solution with the concentration of 2-5 mg/mL, adjusting the pH to 8.5 by using dilute hydrochloric acid, adding a dopamine solution with the concentration of 1-4 mg/mL, and fully stirring and reacting for 5-8 hours to obtain a nano copper wire solution coated with polydopamine; injecting the poly-dopamine-coated nano copper wire solution into a polytetrafluoroethylene tubular mold, freezing in liquid nitrogen at-196 ℃, placing the poly-dopamine-coated nano copper wire solution into a freeze dryer after the poly-dopamine-coated nano copper wire solution is completely frozen, and drying for 48-96 hours at the temperature of-10 ℃ to-50 ℃ and under the vacuum degree of 1.3-13 Pa to form a nano copper wire grid structure.
8. The method of claim 1, wherein in step S3, the nano calcium carbonate, the zinc oxide, the polyvinyl butyral, and the polybutadiene rubber are mixed in a mixing device, the mixing speed is monitored during mixing, the monitored mixing speed is compared with the set mixing speed, and an alarm is given if an error occurs in the comparison.
9. The method of claim 1, wherein in step S2, the carbon fiber, the alumina fiber, the magnesium borate whisker, the polyurethane resin, the nano-silica, and the quartz sand are weighed, the weighing data is recorded as data a, the discharged mixture is weighed, the weighing data is recorded as data B, and the data a is subtracted from the data B to obtain a loss amount.
10. The method of claim 1, wherein in step S6, the mixture is heated, the temperature of the heated mixture is monitored by a temperature sensor, and the monitored data is displayed on a display.
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| CN117511110B (en) * | 2023-11-09 | 2024-05-10 | 山东方特管业有限公司 | Polypropylene composite material for cable sheath and preparation method thereof |
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