225 results about "Graphite composite" patented technology

The invention discloses a high-initial-efficiency fast-charge graphite composite material and a preparation method thereof, the composite material is of a core-shell structure, the core is graphite, and the shell is lithium sulfonate / lithium molybdate and an amorphous carbon coating layer thereof; the mass ratio of the shell is 5-15 wt% according to the mass ratio of the composite material being 100%. The preparation method comprises the following steps: adding a molybdenum compound into a solvent to prepare a solution, adding graphite oxide, an inorganic lithium salt and a carbon nanotube conductive solution, reacting for 2-12 hours at the temperature of 50-120 DEG C, filtering, carbonizing filter residues to obtain a lithium molybdate conductive agent coated graphite material, and depositing a lithium sulfonate derivative on the surface of the lithium molybdate conductive agent coated graphite material by an atomization method to obtain the lithium molybdate conductive agent coated graphite material. The electron and ion conductivity of the material can be improved, and the rate and the first efficiency of the material can be improved.

The invention discloses a silicon carbide power module packaging structure with low thermal resistance and low stress, and belongs to the technical field of semiconductor devices. The packaging structure comprises a metal substrate; the insulating ceramic layer is arranged on the metal substrate; the circuit layer is arranged on the insulating ceramic layer; the lower surface of the silicon carbide chip is connected with the circuit layer through a first interface layer; the composite heat dissipation stress buffer layer is arranged on the upper surface of the silicon carbide chip through a second interface layer; the copper clamp is connected with the upper surface of the composite heat dissipation stress buffer layer through a third interface layer; and the composite heat dissipation stress buffer layer is made of a copper-graphite composite material. According to the invention, the junction temperature of the silicon carbide chip can be greatly reduced, the overall thermal resistance is reduced, the surface stress of the chip is reduced, the warping phenomenon of the chip in the working process is effectively improved, and the long-life reliability of the power module under the long-term thermal cycle working condition is ensured.

The invention belongs to the field of negative electrode materials, and particularly relates to a silicon-graphite composite material, a preparation method and application thereof and a lithium ion battery, the preparation method comprises the following steps: mixing and slurrying silicon powder, graphite and a composite functional additive, and then carrying out ball milling modification to obtain primary composite particles; the composite functional auxiliary agent comprises an auxiliary agent A, an auxiliary agent B and an auxiliary agent C; the primary composite particles and a carbon source liquid phase are compounded and then subjected to spray drying and heat treatment, or spray pyrolysis is directly carried out, and secondary composite particles are prepared; and carrying out modification treatment on the secondary composite particles prepared in the step 2 in a surface modification liquid, and then carrying out low-temperature annealing at 150-300 DEG C to prepare the silicon-graphite composite material. The surface modification liquid is an organic solution in which conductive lithium salt and an auxiliary agent D are dissolved. Based on the combined control of the preparation process and the structure, the silicon-based negative electrode material with ultra-long cycle life and excellent low-temperature fast charging performance can be obtained.

The invention discloses an electroplated part, an electroplated part manufacturing method and a connector. The electroplated part comprises a base material; a nickel plating layer formed on the surface of the base material; the tin-graphite composite plating layer is formed on the nickel plating layer; the nickel plating layer is formed on the base material, the tin-graphite composite plating layer is formed on the nickel plating layer, the tin plating layer is formed on the tin-graphite composite plating layer, the nickel plating layer serves as a bottom plating layer of the base material, the tin plating layer serves as an outer plating layer of the base material, and the tin-graphite composite plating layer serves as a middle plating layer of the base material. According to the invention, the graphite particles exposed from the tin-graphite composite coating are partially or completely wrapped by the outermost tin coating, so that the graphite particles are not easy to fall off, the wear resistance and corrosion resistance of the electroplated part are improved, and the service life of the electroplated part is prolonged. In addition, the plating layer structure also has a relatively low friction coefficient, so that the insertion and extraction force of the electroplated part in the use process can be greatly reduced.

The invention relates to the technical field of valves, discloses a dry shaft type two-way sealing high-performance butterfly valve and aims to solve the problems that in the prior art, a valve rod is corroded and abraded, high-temperature and high-pressure sealing fails, and traditional dry shaft isolation is fragile. The three-eccentric butterfly valve is characterized by comprising a three-eccentric butterfly plate, an elastic metal valve seat and a main shaft isolation assembly. The elastic metal valve seat is composed of a corrugated spring ring and a stainless steel / flexible graphite composite sealing layer, and bidirectional zero leakage is achieved. The dry shaft isolation assembly comprises an isolation sleeve, an inner side dynamic sealing piece, a bearing assembly and a medium blocking cavity, and complete isolation of the valve rod and a medium is achieved. By the adoption of the technical scheme, long-term reliable dry shaft isolation and excellent two-way zero-leakage sealing performance can be achieved, and the maintenance cost is reduced.

The invention discloses a method for converting CO2 into a nitrogen-doped composite carbon material in one step by using molten salt, and belongs to the technical field of carbon material preparation and carbon dioxide resource utilization. The method disclosed by the invention comprises the following steps: S1, mixing LiCl, KCl, KOH and a nitrogen source to form a LiCl-KCl-KOH-nitrogen source system; s2, carrying out first heating and heat preservation on the LiCl-KCl-KOH-nitrogen source system in an inert atmosphere to remove moisture, then carrying out second heating to form molten salt, then introducing CO2 gas to generate carbonate ions, and meanwhile, carrying out electrolysis to obtain a cathode product; and S3, after the molten salt is slowly cooled, taking out a cathode product, and sequentially carrying out washing, vacuum drying and annealing to obtain the gradient nitrogen-doped multilevel structure graphite composite carbon material. The prepared material has multiple nano structures, high specific surface area and high nitrogen content, shows excellent rate capability and long cycle stability in electrochemical energy storage application, and has a wide application prospect.

The invention relates to a preparation method of manganous-manganic oxide / graphite nano-enzyme for sensitive detection of L-cysteine, a green synthesis strategy is adopted, a mechanochemical method is combined to develop a novel Mn3O4 / graphite composite material which is low in cost, high in activity and easy to synthesize in macroscopic quantity, and the prepared product has relatively high catalytic activity and can be applied to the detection of L-cysteine. Compared with the prior art, the method has the advantages that oxidase-like activity is obviously improved, the Michaelis constant Km is 0.132, the maximum reaction rate Vmax is 0.998 * 10 <-7 > M <-1 > s, high-sensitivity and visual analysis and detection of L-Cys can be realized at normal temperature, the detection interval is 1-40 [mu] mol / L, and the detection limit is 0.361 [mu] mol / L.

The utility model relates to the technical field of batteries, in particular to a direct cooling plate assembly and a power battery. The direct cooling plate assembly comprises a direct cooling plate and a graphite composite soaking film, a refrigerant flow channel is distributed in the direct cooling plate for refrigerant circulation, the graphite composite soaking film is laid on the surface of one side of the direct cooling plate, and the direct cooling plate is attached to the battery module through the graphite composite soaking film. When the temperature of the battery module rises, the heat of the battery module can be transferred to the direct cooling plate through the graphite composite soaking film, so that the refrigerant is subjected to phase change to absorb a large amount of heat, and the quick cooling of the battery module is realized. Meanwhile, the graphite composite soaking film has a high heat conductivity coefficient in the plane direction and has a good temperature uniformizing effect, so that the consistency of the surface temperature of the direct cooling plate is effectively improved, the temperature difference between battery cells of the battery module is reduced, the temperature consistency of the battery module is improved while efficient heat dissipation of the battery module is achieved, and the service life of the battery module is prolonged. The use safety and the cycle life of the battery module are improved.

The invention relates to the technical field of lithium ion battery manufacturing, and discloses a preparation method of a silicon-containing silicon oxide-phenolic resin-artificial graphite composite negative electrode material, which comprises the following steps: grafting phytic acid on the surface of silicon-containing silicon oxide to construct a protonated acidic site, mixing modified silicon-containing silicon oxide, phenolic resin and artificial graphite, and keeping at a constant temperature to obtain the silicon-containing silicon oxide-phenolic resin-artificial graphite composite negative electrode material. Preferentially carrying out pre-polycondensation by utilizing phytic acid catalysis interface resin to form a gel layer, and rapidly removing a solvent to obtain a precursor; according to the preparation method disclosed by the invention, interface chemical anchoring is established before solvent volatilization by utilizing a dynamic competitive mechanism, so that the problem of stripping of resin and active particles caused by solvent volatilization in a traditional process is solved, and the structural stability and the electric conduction continuity of the material in a battery circulation process are improved.

The invention discloses a phase change energy storage and thermochromism cable overheat protection structure, which belongs to the technical field of cables, and comprises a conductor and a sheath layer, the sheath layer is arranged on the outer side of the conductor, a gradient phase change layer is arranged between the conductor and the sheath layer, the gradient phase change layer is made of paraffin / expanded graphite composite phase change material and coats the outer surface of the conductor, and the outer surface of the gradient phase change layer is coated with a thermochromism layer. The gradient phase change layer can absorb overload heat; the sheath layer comprises a base material, a thermochromic pigment and butyl stearate, the thermochromic pigment takes the base material as a matrix, and the color of the sheath layer is changed along with the change of the temperature. According to the invention, the gradient phase change layer is arranged between the conductor and the sheath layer, so that when a traditional cable is overloaded, the temperature of the conductor rises quickly, the protection response of a circuit breaker and the like lags behind, and the temperature rise cannot be inhibited at the initial stage of abnormal temperature. The gradient phase change layer is arranged to absorb heat, 30% of overload heat can be absorbed, peak temperature rise of the conductor is reduced, the temperature rise rate is reduced, the temperature rise process is obviously delayed, and the hysteresis defect of action of the circuit breaker is overcome.

The invention provides a weather-resistant matte PE material and application thereof in wind power and photovoltaic power generation, and relates to the technical field of PE materials. The weather-resistant matte polyethylene material comprises the following components in parts by weight: high-density polyethylene; 18 to 23 parts of an ethylene-octylene copolymer (POE); 8-15 parts of a nanometer laminated titanium dioxide / graphite fluoride composite weather-resistant filler; the thickness of the graphite fluoride sheet layer is 10-30nm; the ultraviolet response type matte regulating agent is prepared from spirooxazine photochromic molecules and surface hydroxylation needle-shaped aluminum oxide particles. By reasonably proportioning high-density polyethylene (HDPE), ethylene-octylene copolymer (POE), nano composite filler, ultraviolet response type matte regulating agent, high-energy light-harvesting inhibiting particles and damp-heat-resistant synergist, the material can obviously delay yellowing, pulverization and crack formation under the conditions of long-term outdoor wind and rain, ultraviolet radiation and temperature cycle; the comprehensive weather resistance is superior to that of the existing PE material.

The present invention belongs to the technical field of batteries and discloses a lithium-ion battery, which includes a positive electrode plate and a negative electrode plate. The active material of the positive electrode plate includes lithium cobaltate single crystal, and the active material of the negative electrode plate includes graphite and silicon particles mixed therein. The positive electrode plate further includes a lithium supplement agent, and the lithium supplement agent is Li2NiO2. The mass percentages X1 and Y1 of lithium cobaltate and Li2NiO2 in the positive electrode plate material satisfy: X1 + Y1 ≥ 90%, 0% < Y1 / (X1 + Y1) ≤ 6%. The present invention aims at a battery system with a single crystal lithium cobaltate positive electrode and a silicon-graphite composite negative electrode. By introducing Li2NiO2 as a lithium supplement agent into the lithium cobaltate positive electrode, it can solve the problem of low initial Coulomb efficiency of the negative electrode caused by the silicon-graphite negative electrode and give full play to the advantage of high volume energy density of this system.

The application provides a preparation method of graphene, and belongs to the technical field of graphene. The application comprises the following steps: step 1: preparing an electrolysis environment required by an electrolysis experiment: a graphite electrode, a prepared electrolyte, and a low-temperature environment; step 2: inserting the graphite electrolysis into the electrolyte with a proper electrode spacing and connecting a direct-current power supply, and waiting for a period of time to observe the stability; step 3: placing the electrolysis device built in step 2 into a low-temperature constant-temperature tank, setting a low-temperature temperature and a constant time, taking out part of the electrolysis slurry at a time for freeze-drying and then testing XRD, judging the quality of the graphene slurry, and obtaining graphene slurry with a 1-3 layer content of more than 70%; and step 4: obtaining graphene dry material after collecting and purifying the graphene slurry in step 3, namely graphene. The application prepares graphene by a low-temperature electrolysis experiment, so that more graphene can be prepared.

The invention provides a microcrystalline graphite composite material and a preparation method thereof, and relates to the technical field of lithium batteries, the microcrystalline graphite composite material comprises a core layer, a transition layer coated on the surface of the core layer, and a coating layer coated on the surface of the transition layer; the core layer comprises first microcrystalline graphite; the transition layer comprises second microcrystalline graphite and first amorphous carbon which are mixed with each other; the coating layer comprises second amorphous carbon; the second microcrystalline graphite is nitrogen-doped microcrystalline graphite, and the particle size of the second microcrystalline graphite is smaller than that of the first microcrystalline graphite. According to the composite material, a nitrogen-doped small-particle-size transition layer is used for constructing a gradient structure, stress is relieved, strength is enhanced, crushing and stripping are inhibited, and the compaction density is improved; and meanwhile, conductive transmission is optimized, and circulation and rate capability are synergistically improved.

The present application relates to the technical field of battery negative electrode material, and particularly relates to a starch-based hard carbon composite graphite negative electrode material, a preparation method and application thereof. The starch-based hard carbon composite graphite negative electrode material is obtained by mixing and fully grinding expanded graphite and esterified starch and then carbonizing. The starch-based hard carbon composite graphite material realizes large-capacity storage of lithium ions through the synergistic effect of biomass hard carbon and graphite, and promotes the reaction kinetics. The starch-based hard carbon composite graphite negative electrode material prepared by the present application exhibits large lithium ion storage capacity and good charge / discharge rate in a wide potential window. In addition, the capacity retention rate can still be above 90% after 100 cycles in the cycle test. The material realizes a technical breakthrough of high capacity and high rate performance in the lithium ion battery negative electrode.

The application discloses a lithium niobate-coated graphite composite negative electrode material and a preparation method and application thereof. x NbO y , wherein 0 ‑ 1 S / cm-10 ‑8 S / cm; the thickness of the lithium niobate is 0.01 nm-200 nm; and the lithium niobate-coated graphite composite negative electrode material is applied in a lithium ion battery, so that the rate performance of the lithium ion battery can be effectively improved, and the fast charging performance is improved.

The invention discloses a pre-lithiated graphite composite material and a preparation method thereof, a pre-lithiated silicon-carbon composite material, a pole piece and a lithium ion battery. The pre-lithiated graphite composite material comprises graphite and a lithium-containing composite material, the lithium-containing composite material comprises a lithium-containing substance and a porous carbon coating layer arranged on the surface of the lithium-containing substance, the lithium-containing composite material is dispersed in the graphite, and at least part of the lithium-containing composite material and at least part of the graphite are connected together through an amorphous carbon skeleton; the lithium-containing substance comprises a lithium elementary substance and / or a lithium-containing compound. The lithium ion battery obtained by taking the pre-lithiated silicon-carbon composite material obtained from the pre-lithiated graphite composite material as a negative electrode material has excellent cycling stability, capacity performance and first effect, and is excellent in safety performance.

The invention relates to the field of ferrous metallurgy and high-temperature material engineering, in particular to a preparation method and application of a silicon steel annealing furnace roller surface coating based on a double-hollow graphite electrode plasma arc melting diamond-graphite composite coating. A current loop is formed, so that plasma arcs are generated between the electrodes; diamond powder, graphite powder and modified zirconium oxide powder are mixed, nickel-based self-fluxing alloy powder is added, and mixed powder is obtained; argon serves as carrier gas, and the mixed powder is fed into a plasma arc area through a double-hollow graphite electrode; the surfaces of the mixed powder particles are activated and are metallurgically bonded with the surface of a partially molten roller base material by utilizing high temperature and high energy generated by a plasma arc, and a diamond-graphite composite coating is formed on the surface of the roller in a cladding manner; and carrying out post-treatment on the diamond-graphite composite coating according to requirements.

This invention relates to the field of battery material preparation technology, and particularly to a high-capacity ultra-fast charging graphite composite anode material, its preparation method, and its application. The graphite composite anode material comprises, from the inside out: a graphite core, a hierarchical porous hard carbon layer, and graphene quantum dots; the graphene quantum dots are distributed within the pores and on the surface of the hierarchical porous hard carbon layer. Through a carefully designed gradient structure, this invention significantly improves the reversible capacity and cycle stability of the material while ensuring high initial coulombic efficiency.

The invention discloses a graphite composite material and a preparation method thereof, and a lithium ion battery, and relates to the technical field of battery preparation, the graphite composite material comprises an inner core and a coating layer at least partially coating the surface of the inner core; the material of the inner core comprises modified graphite, the modified graphite contains a doping element and a phosphorus simple substance, and the doping element comprises at least one of a boron element, a nitrogen element and a sulfur element; in the direction away from the inner core, the coating layer comprises a first carbon coating layer and a second carbon coating layer, and the first carbon coating layer comprises heteroatom elements. The graphite composite material provided by the invention has relatively high lithium ion migration rate and compaction density, so that the graphite composite material has relatively high dynamic performance and energy density.

The present invention belongs to the technical field of wave-absorbing materials, and provides an organic modified expanded graphite composite polymer wave-absorbing material and a preparation method therefor. The wave-absorbing material comprises conductive polymer foam particles and modified expanded graphite attached to the surface of the conductive polymer foam particles. 0.5-20 kg of modified expanded graphite is attached to the surface per cubic meter of the conductive polymer foam particles. The absorption principle of the organic modified expanded graphite composite polymer wave-absorbing material of the present invention lies in that electromagnetic waves are converted into heat to be dissipated, and when the conductive polymer foam particles are of a ring structure, due to large surface area of the particles, more organic modified expanded graphite can be adhered without affecting particle compression molding, which not only significantly increases the oxygen index, but also, thanks to the ring structure, enhances the tolerance power of the ring polymer wave-absorbing material to exceed 2500 W during high-power testing, and the heat dissipation effect thereof is superior to that of a wave-absorbing material pressed from solid foam particles.

This application relates to the field of lithium-ion batteries, disclosing a graphite composite anode material, its preparation method, anode sheet, and a lithium battery. The anode material comprises graphite, a conductive metal, and graphene quantum dots; the graphite forms the matrix core, coated with the conductive metal, and the graphene quantum dots coat the conductive metal. This application employs vapor deposition of the conductive metal, which can uniformly form a highly conductive metal layer on the graphite surface, improving charge / discharge capacity, enhancing charge transport performance and conductivity, resulting in a significant improvement in rate performance. Simultaneously, the simple evaporation of organic solvents allows for the uniform coating of nanoscale graphene quantum dots onto the metal / graphite composite material surface, effectively mitigating volume changes during charge / discharge and thus enhancing the rate performance and cycle stability of the composite material. Furthermore, using oil-based needle coke and pitch to prepare the graphite material can also improve the overall electrochemical performance of the anode material.

The invention discloses an SPS preparation method and application for sintering and connecting TZM and graphite by using titanium hydride powder in the field of connection of TZM / graphite dissimilar materials, and particularly relates to a TZM / graphite composite material obtained by performing sintering diffusion connection on the TZM and graphite dissimilar materials by using the titanium hydride powder as a middle layer material through an SPS technology. The method has the following advantages that the titanium hydride powder serves as an interlayer material, compared with existing used titanium powder or titanium foil, the titanium hydride powder is environmentally friendly and low in component content, the titanium hydride powder can release hydrogen and generate elemental titanium within the temperature range of 400-800 DEG C, oxidation of titanium can be reduced while a base metal oxide layer can be removed, interdiffusion and solid solution of interface Mo and Ti atoms are promoted, and the service life of the interface Mo and Ti is prolonged. And a good metallurgical bonding interface is formed through reaction with the graphite side, and the TZM / graphite composite material which is free of crack defects, high in interface bonding strength and good in durability is obtained.

The utility model provides a novel flame-retardant and high-temperature-resistant civil air defense door, which belongs to the technical field of civil air defense engineering protection equipment and comprises a door frame, a composite door leaf, a rotating handle and a handle. The composite door leaf is composed of an anti-impact layer, a support, a heat-insulation flame-retardant layer and an inner layer, the anti-impact layer is made of a 2mm cold-rolled steel sheet, a first sealing groove is formed in the edge of the inner side of the door frame, and a second sealing groove is formed in the edge of the inner side of the door frame and located on the side face of the first sealing groove. The surface of the impact-resistant layer is coated with a high-temperature-resistant ceramic coating, so that the temperature is not easy to rise quickly in case of fire, the heat-insulating and flame-retardant layer is formed by composite filling of a 50-80mm ceramic fiber board and expanded graphite, the ceramic fiber board can provide a heat-insulating function, and the expanded graphite expands in case of high temperature to form a compact carbonized layer to isolate oxygen, so that the fire is not easy to break out, and fire spreading is prevented; and the structural stability and the protection performance in a high-temperature environment are realized.

The invention provides a graphite composite polar plate rapid mold pressing feeding device which comprises a supporting platform and a press platform, a servo motor and a feeding box are arranged on the supporting platform, the servo motor drives the feeding box to move left and right on the supporting platform, a lower mold is arranged on the press platform, and the upper surface of the supporting platform is flush with the upper surface of the lower mold. The feeding box moves to the position above the lower die and enables the graphite composite powder in the feeding box to fall into the lower die, an upper die is arranged above the lower die, and the pressing machine downwards presses the upper die into the lower die to press the graphite composite powder into the graphite composite polar plate. The feeding box with the hollow bottom and the open upper portion is adopted, the mold cavity can be rapidly filled with graphite composite powder through gravity, the powder can be rapidly supplemented from the containing hopper, the volume of the fed powder is controlled through the volume of the mold cavity of the lower mold, and operation is easy and rapid; by adopting the method of fully paving the mold with the powder, the flowing of the graphite composite powder can be reduced, and the layering phenomenon among different components in the flowing process of the composite material can be reduced at the same time.

The utility model relates to the technical field of pipeline equipment, and discloses a graphite composite inner ribbed tube structure which comprises a ribbed tube shell, a first conducting ring is fixedly connected to the right side of the inner surface of the ribbed tube shell, and a second conducting ring is fixedly connected to the left side of the inner surface of the ribbed tube shell. According to the utility model, the ribbed tube shell, the first conducting ring, the second conducting ring, the metal net and the composite lining layer are arranged, the net-shaped design of the metal net can be equivalent to a metal shielding net, and the graphite on the outer layer of the composite lining layer can be used as a grounding point; the metal net and the composite lining layer can form an equipotential body, so that the potentials of all positions in the metal net are the same, electromagnetic wave radiation of the surrounding environment and electromagnetic signals sent by other equipment can be isolated outside the metal net, and it is guaranteed that the interior of the metal net is not affected by an external electric field; and fire or discharge caused by flowing of the fluid at different potential positions is avoided.

The invention discloses a bendable silicon-graphite composite anode for a lithium ion battery cell. The anode includes a current collector, a lithium accepting host material, and a transition layer sandwiched between the current collector and the lithium accepting host material. The transition layer is in direct contact with the current collector and the lithium-accepting host material. The transition layer includes a graphite active material and a binder. The lithium-accepting main body material is a silicon layer with uniform thickness. The current collector is a metal foil with the thickness smaller than that of a traditional anode current collector.

The invention relates to a multistage sandwich structure silicon carbon material based on lignin carbon as well as a preparation method and application of the multistage sandwich structure silicon carbon material. The preparation method comprises the following steps: firstly, dissolving ammoxidation lignin in water, mixing the ammoxidation lignin with nano silicon with positive charges on the surface to realize electrostatic adsorption, and calcining and pre-carbonizing at low temperature to obtain a lignin carbon coated silicon composite material Si-C; then embedding the lignin carbon coated silicon composite material Si (at) C into expanded graphite through ball milling to obtain a lignin carbon coated silicon embedded expanded graphite composite material Si (at) C-EG; and finally, carrying out ball-milling mixing on asphalt and the Si-coated C-EG composite material, and carrying out high-temperature calcination to soften and permeate the asphalt between expanded graphite layers to form a closed macroporous sandwich structure, so that a space is effectively provided to relieve volume expansion, and the multistage sandwich structure silicon-carbon material based on lignin carbon is obtained. Through verification, the silicon-carbon composite material prepared by the invention has excellent cycling stability and rate capability, and the constructed multi-stage sandwich structure can effectively relieve volume expansion of silicon. The lithium ion half-battery assembled by the lignin carbon-based multistage sandwich structure silicon carbon material prepared by the invention has excellent cycling stability and charge transfer capability.

A method for the production of a silicon-graphite composite material, the method comprising subjecting a silicate containing graphite material to a magnesiothermic reduction process and thereby producing a silicon-graphite composite material. The method further provides for the production of a silicon and graphite composite material without the need for pre-synthesis of the silicate containing graphite material.

The invention relates to the technical field of composite films, and particularly discloses a high-adhesion colored high-brightness composite film packaging material which structurally comprises a bottom film layer and a colored layer compounded on the surface of the bottom film layer, the colored layer is formed by coating and drying a colored coating containing a modified carbon black / crystalline flake graphite compound, polyketone resin, an oily acrylic acid-organic silicon composite resin solution and the like, the modified compound has a composite coating structure of a titanium hydroxyl compound and a silane coupling agent, and the bottom film layer is selected from a specific film and is subjected to corona treatment. The compatibility and the interface bonding force of a compound and resin are enhanced through a composite coating structure, all the components synergistically improve the color development, the brightness and the stability, and an optimized preparation process is matched, so that the material has high glossiness, excellent adhesive force and wear resistance and is suitable for the field of cigarette packaging.