3737 results about "Chemical stability" patented technology

The invention discloses a silicon negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The silicon negative electrode material comprises a silicon material substrate and a coating layer coating the surface of the silicon material substrate, the coating layer comprises cyclized polyacrylonitrile and a fast ion conductor. According to the silicon negative electrode material provided by the invention, a uniform cyclized polyacrylonitrile and fast ion conductor coating layer is constructed on the surface of a silicon material matrix. The good electronic conductivity and elasticity of the cyclized polyacrylonitrile and the excellent ionic conductivity of the fast ion conductor are beneficial to buffering the volume expansion of the silicon carbon material, accelerating the lithium ion transmission kinetics and effectively improving the rate capability of the negative electrode material; the cyclized polyacrylonitrile has high chemical stability and strong compatibility with the silicon material and the sulfide solid electrolyte, and is used as a buffer layer between the silicon material and the sulfide solid electrolyte to avoid direct contact between the silicon carbon material and the sulfide solid electrolyte, inhibit interface side reaction and effectively improve the cycle stability of the battery.

The invention relates to the technical field of PVD coating, in particular to a PVD coating design quality control method based on machine learning. The method comprises the following steps: obtaining a coating substrate object, carrying out PVD coating design, and carrying out substrate PVD coating simulation based on the design to obtain related simulation data; analyzing mechanical property parameters by using the PVD coating simulation data of the base material, evaluating the mechanical property of the coating material in combination with the mechanical data, and generating dynamic stress response data of the coating layer through a stability test; evaluating based on the chemical stability of the base material coating film, and predicting the failure condition of the coating film layer by combining the dynamic stress response data of the coating film layer; and through comprehensive analysis of dynamic stress response data and failure data of the coating layer, the coating design is further optimized. According to the invention, through the quality control of PVD coating, the quality of the PVD coating is more perfect.

The present invention relates to a lithium-ion battery diaphragm modified by high-temperature fluorine-containing liquid crystal polymer and polyvinylidene fluoride, and a preparation method and application thereof. The lithium-ion battery diaphragm of the present invention comprises a base diaphragm and a modified coating coated on the surface of the base diaphragm, wherein the modified coating comprises a fluorine-containing liquid crystal polymer and polyvinylidene fluoride. The present invention forms a modified coating by mixing and dissolving the two materials in a suitable solvent, which significantly improves the thermal stability, chemical stability, mechanical strength and ionic conductivity of the diaphragm, thereby improving the safety performance and cycle life of the battery.

The invention relates to the technical field of silica gel cables, and discloses a silica gel cable with high reliability and high flexibility and a process thereof, and the silica gel cable comprises a conductor layer which is formed by hierarchically twisting a plurality of tinned copper wires with the diameter of 0.05-0.10 mm, and the twisting helical angle gradually changes from 25 degrees in the inner layer to 55 degrees in the outer layer; the insulating layer coats the conductor layer and comprises a silica gel material, a hydrogen-containing silicone oil cross-linking agent and a plasticizer, microcapsules with the particle size of 20-50 microns are dispersed in the silica gel material, a shell layer of each microcapsule is polyurethane, and a core layer of each microcapsule is a siloxane repairing agent containing a platinum catalyst; and a sheath layer. A hydrogen-containing silicone oil cross-linking agent in the insulating layer enables molecular chains to be cross-linked to form a net structure, the physical and chemical stability is enhanced, microcapsules are matched to endow a self-repairing function, a repairing agent is released when the cable is damaged, the self-repairing performance of the insulating layer is further guaranteed, damage is filled through a cross-linking reaction, insulation is recovered, the reliability of the cable is remarkably improved, and the service life of the cable is remarkably prolonged.

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention discloses a high-entropy alloy / nitrogen-doped carbon nano catalytic material and a preparation method and application thereof.The nano catalytic material comprises a high-entropy alloy composed of five non-noble metals including Fe, Co, Ni, Cu and Mn and nitrogen-doped carbon synthesized with the assistance of MOF, the non-noble metal high-entropy alloy serves as a main body material, the nitrogen-doped carbon serves as a carrier material, and the nitrogen-doped carbon serves as a carrier material. A non-noble metal high-entropy alloy is loaded on nitrogen-doped carbon to construct a novel nano catalytic material, and the novel nano catalytic material is used for activating peroxydisulfate to remove antibiotics in a water body. The catalyst has the advantages of excellent chemical stability, good reusability and the like and is a novel nano catalytic material with efficient catalytic performance and environment-friendly characteristics, and the preparation method has the advantages of being simple in operation process, green, environmentally friendly, economical, feasible and the like and can be used for large-scale preparation.

The invention discloses an organic electroluminescent compound and a luminescent device. The organic electroluminescent compound has a structure as shown in a formula (1). In the structure of the N-type compound provided by the invention, an electron-rich group formed by carbazole and phenyl connected with the carbazole is substituted by deuterium, and the deuterated P-type compound in the core region is matched, so that the chemical stability, photoelectric stability and thermal stability of the structure of the luminescent material can be effectively improved, the stability of a luminescent device using the material is further improved, and the service life of the luminescent device is prolonged; meanwhile, the N-type compound and the deuterated P-type compound in the core area can form a good Premix material, good P / N stability and mass production stability are achieved in the evaporation process, the formed Premix material has more balanced carrier mobility, the efficiency of a device is greatly improved, and the service life of the device is greatly prolonged. And # imgabs0 #.

The invention discloses a multifunctional composite material for mineralizing and storing CO2 based on fly ash and a preparation method of the multifunctional composite material. The material is prepared from high-activity fly ash subjected to plasma activation treatment, a nanoscale metal oxide catalyst, a metal organic framework, a functional organic ligand, an intelligent pH regulator, a solid suspension stabilizer and water. The preparation method comprises the steps of suspension preparation, high-pressure CO2 mineralization reaction in a reaction kettle, centrifugal separation and freeze drying treatment. The method is simple, the raw material cost is low, the prepared multifunctional composite material not only can remarkably improve the storage efficiency of CO2, but also can ensure that a stable carbonate product is generated, and the carbonate product has high specific surface area and excellent chemical stability, can be widely applied to the fields of high-end building materials, energy storage materials and fine chemical engineering, and has wide application prospects. And meanwhile, the high-added-value utilization of the industrial by-product fly ash is realized, and the dual purposes of reducing carbon emission and improving the utilization rate of solid wastes are achieved.

The invention provides a novel polynorbornene anion exchange ionomer containing a polar functional group as well as a preparation method and application of the novel polynorbornene anion exchange ionomer. The polynorbornene has excellent thermal stability and chemical stability. Meanwhile, the AEI main chain of the polynorbornene has no aryl group, so that the adsorption influence caused by the aryl group is avoided. The synthesized addition polynorbornene AEI in the form of quaternary ammonium salt can be dissolved in a low-boiling-point solvent, and it is ensured that a membrane electrode can be prepared through a solvent casting method. Besides the solubility of the AEI, the addition polynorbornene-based AEI in the form of quaternary ammonium salt is modified by utilizing a thiol-ene click reaction, an anion exchange ionomer containing a polar functional group can be prepared, the interaction between the AEI and an electrolytic catalyst is improved, the reaction is simple and easy to operate, the universality is high, and the method is suitable for industrial production. And the current density in the AEMWE system containing the AEI can be effectively improved.

The invention provides a preparation method of an hourglass type covalent organic framework (COF) composite membrane, and belongs to the field of gas membrane separation. According to the method, covalent organic framework nanosheets with different pore diameters and charge characteristics are utilized to construct the COF composite membrane with a unique hourglass structure through a vacuum-assisted layer-by-layer assembly technology, so that precise regulation and control on H2 and CO2 gas transmission behaviors are realized, and the prepared composite membrane shows remarkable H2 / CO2 separation selectivity and high permeation flux, and has a good application prospect. The chemical stability, the thermal stability and the mechanical flexibility are excellent. The invention provides a novel solution for efficient gas separation and energy storage application.

The invention belongs to the technical field of novel fluorescent materials, and particularly discloses application of a mechanical color change pyrenyl derivative in latent fingerprint fluorescence imaging and extraction. The mechanical color-changing pyrenyl derivative can be selectively combined with fingerprint residual substances under the excitation of ultraviolet light through the unique fluorescence response characteristic, so that potential fingerprints form high-contrast fluorescence imaging on smooth or rough surfaces (such as glass, metal, plastic and the like), and the mechanical color-changing pyrenyl derivative is compatible with conventional camera equipment to realize rapid acquisition. The compound design is based on a modular synthesis route, and has the advantages of simple and convenient synthesis process, controllable raw material cost, high reaction yield and the like. The product has excellent thermal stability and chemical stability, can be stored at normal temperature and does not need special treatment, and the practical application threshold is greatly reduced. Compared with a traditional fingerprint developing technology, the method has remarkable breakthroughs in the aspects of sensitivity, substrate adaptability and operation convenience, and an efficient, economical and environment-friendly novel solution is provided for the fields of criminal investigation, forensic identification and the like.

The invention provides a modified lithium sulfide solid electrolyte, a sulfide solid electrolyte, a preparation method thereof and a battery, and relates to the technical field of solid electrolyte materials. The preparation method of the sulfide solid electrolyte is different from a traditional doping technology, the high-stability sulfide solid electrolyte is prepared mainly through modification of lithium sulfide, the comprehensive performance of the sulfide solid electrolyte is improved, the ionic conductivity and chemical stability of the sulfide solid electrolyte are improved, and the service life of the sulfide solid electrolyte is prolonged. And the mechanical strength and the crack resistance are also obviously enhanced. The preparation method disclosed by the invention is simple, does not need to be carried out at high temperature, and does not need to use expensive raw materials and complex processes, so that the production cost is reduced, the application range of the sulfide solid electrolyte is expanded, and large-scale production and application of the sulfide solid electrolyte are favorably realized.

The invention relates to methods for synthesizing an engineered adsorbent suitable for the selective extraction of lithium from brine solutions. The invention describes the advantages of introducing mixed metal oxides into the crystal lattice of anatase titania precursor. The invention offers significant advantages, including high adsorption capacity of the ion sieve, enhanced chemical stability of the sorbent, and higher lithium selectivity.

The invention relates to the technical field of high polymer materials, in particular to a high-entropy alloy modified polyvinyl alcohol / polypyrrole composite hydrogel material as well as a preparation method and application thereof. Firstly, a polypyrrole aqueous solution is prepared through chemical oxidative polymerization, and high-entropy alloy nanoparticles are synthesized through a Joule thermal technology; and then mixing a polypyrrole aqueous solution, the high-entropy alloy nanoparticles and a polyvinyl alcohol aqueous solution, and adding a cross-linking agent and a catalyst to prepare the high-entropy alloy modified polyvinyl alcohol / polypyrrole composite hydrogel material. According to the composite hydrogel, under the synergistic effect of the high-entropy alloy, the light absorption performance is remarkably improved, wide-spectrum efficient absorption of ultraviolet rays, visible light and near-infrared light in a solar spectrum is achieved, and meanwhile the mechanical strength and chemical stability of the material are enhanced. The preparation process is simple, the cost is low, and the prepared composite hydrogel has wide application prospects in the fields of seawater desalination, wastewater treatment and the like as a solar interface evaporator.

The invention relates to the technical field of all-solid-state batteries, in particular to a halide sulfide double-layer coated positive electrode material and a preparation method and application thereof. The halide sulfide double-layer coated positive electrode material comprises a positive electrode material substrate, and a halide electrolyte coating layer and a sulfide electrolyte coating layer which sequentially coat the positive electrode material substrate. The halide electrolyte coating layer is located in the middle layer, compatibility with a positive electrode interface can be achieved by means of high oxidation resistance of the halide electrolyte coating layer, and the problem of the positive electrode interface occurring in sulfide electrolyte oxygenolysis is solved. The sulfide electrolyte coating layer is located on the outermost layer, air stability is excellent, processing in a dry environment can be met, and the problems that halide electrolyte is poor in chemical stability, cannot be processed and manufactured in an external environment and is high in density are solved. The halide sulfide double-layer coated positive electrode material has high interface stability and good chemical stability.

The invention discloses polyether-ether-ketone resin with adjustable molecular weight distribution as well as a synthesis method and application of the polyether-ether-ketone resin. The synthesis method comprises the following steps: preparing polyether-ether-ketone resin in the presence of carbonate and / or bicarbonate of alkali metal; wherein the carbonate and / or bicarbonate of the alkali metal comprises sodium carbonate and potassium carbonate, and the sodium carbonate has gradient particle size distribution. According to the invention, sodium carbonate with specific particle size distribution is used to regulate and control the reaction rate to be stable and continuous, so that the molecular weight distribution of the polymer presents a narrower distribution form. Therefore, the molecular structure is uniform, the molecular form is uniform, the physical and chemical properties, including mechanical strength, thermal stability and chemical stability, of the material can be improved, and particularly, the thermal stability of the material is improved most remarkably.

The invention relates to the technical field of composite pipes, and discloses a wear-resistant acid-corrosion-resistant environment-friendly anti-explosion PE pipe. The pipe adopts a multi-layer co-extrusion structural design, and comprises a wear-resistant inner layer, a reinforced middle layer and a protective outer layer. High-density polyethylene is used as a base material, silicon carbide particles and aluminum oxide particles with the surfaces subjected to multifunctional modification are combined to serve as reinforcing filler, and functional polyethylene is used as a base interface modification material, so that the problems that in a traditional pipe, particles and a base interface are low in bonding force, uneven in dispersion, prone to falling off and the like are solved. Carboxyl and unsaturated double bonds are introduced into the functionalized polyethylene through a maleic anhydride grafting technology, so that efficient chemical combination of particles and a matrix is realized, and the mechanical property and the chemical stability of the composite material are improved. The inner layer enhances wear resistance through high particle content, the middle layer provides support and corrosion resistance, and the outer layer improves weather resistance and protection performance of the pipe.

The invention discloses a high-weather-resistance bismuth vanadate coating and a preparation method thereof, and belongs to the technical field of inorganic pigment modification. The high-weather-resistance bismuth vanadate coating comprises bismuth vanadate matrix particles, and the surfaces of the bismuth vanadate matrix particles are sequentially coated with an amorphous aluminum oxide layer, a cerium oxide layer and a fluorinated silicon oxide layer. The amorphous aluminum oxide layer is formed in an atomic layer deposition mode; the cerium oxide layer is formed by hydrothermal treatment of a cerium source. The preparation technology has accurate and controllable technological parameters, is suitable for industrial production, can replace the traditional toxic pigment containing lead and cadmium, and meets the requirements of environmental regulations. The bismuth vanadate coating has excellent weather resistance and chemical stability, the service life of a product can be prolonged, the maintenance cost is reduced, and a reliable solution is provided for development of high-performance environment-friendly pigments.

The invention provides a positive active material with a lithium fluoride layer as well as a preparation method and application of the positive active material. The positive active material comprises a high-nickel ternary positive material and the lithium fluoride layer covering the surface of the high-nickel ternary positive material, and the thickness of the lithium fluoride layer is 10-100 nm. In the positive electrode active material with the lithium fluoride layer, the surface of the high-nickel ternary positive electrode material is covered with the lithium fluoride layer, and lithium fluoride has excellent chemical stability, conductivity and lithium ion transmission rate, so that the positive electrode active material is coated with the lithium fluoride layer with the thickness of 10-100nm, thereby ensuring that the positive electrode active material has relatively good ion transmission performance; the internal strain and phase change of the high-nickel ternary positive electrode material are inhibited, and the risk that the high-nickel ternary positive electrode material generates cracks is reduced; the interface performance is improved, and the active material is isolated from the electrolyte, so that the risk of side reaction between the high-nickel ternary positive electrode material and the electrolyte is reduced, and the high-nickel ternary positive electrode material is prevented from being dissolved and delithiated.

The invention discloses a compound with anti-tumor activity. The compound has a chemical structural formula as shown in a formula (I). The compound belongs to a novel tetracyclic triterpenoid natural product, has good fat solubility and chemical stability, and can be conveniently extracted from the rhizome of a herbal medicine Polygala fallax Hemsl. And prepared into an oral or injection form. The invention also provides a preparation method and application of the compound. The compound provided by the invention can obviously inhibit the growth of mouse lung cancer and reduce the volume and weight of tumor, and can be used for treating tumor diseases.

The invention discloses oil-based cooling liquid for a data center and a preparation method of the oil-based cooling liquid, and relates to the technical field of liquid coolant.The oil-based cooling liquid is prepared by taking base oil as a main component, adding a proper amount of heat-conducting filler, a dispersing agent, a coupling agent, an antioxidant, a corrosion inhibitor and a defoaming agent as auxiliary components and simply stirring and mixing; the cooling liquid is high in heat dissipation efficiency, good in fluidity, good in storage stability and chemical stability, low in volatility, high in safety and suitable for immersed cooling of the data center.

The invention discloses a chlorine-resistant and acid-resistant composite nanofiltration membrane and a preparation method thereof, and belongs to the technical field of membrane separation. A polyhydric alcohol or / phenol compound monomer containing no less than two hydroxyl groups is subjected to interfacial polymerization with cyanuric chloride, so that a relatively loose network structure can be formed, and selective separation of dye and salt is realized. As a hydrochloric acid (HCl) byproduct can be generated in the reaction process, an alkaline compound is added as an acid-binding agent to neutralize HCl and promote the interfacial polymerization reaction, the formed composite nanofiltration membrane structure does not contain amino groups and polyamide bonds sensitive to active chlorine, the reaction sites of the active chlorine are reduced, and the chlorine-resistant stability of the membrane is good. Meanwhile, the polymer film contains a triazine ring structure, and a formed ether bond has good chemical stability, so that the acid-resistant stability of the film is good. The prepared composite nanofiltration membrane has good nanofiltration separation performance, shows good chlorine-resistant and acid-resistant stability, and can be used for separation of dyes / salts.

The invention provides a preparation method of an environment-friendly high-performance gas barrier film, which is characterized in that a solution blending method is adopted to prepare a polyvinyl alcohol / nanocellulose / covalent organic framework nanosheet ternary composite system, and a coating method is adopted to prepare the high-performance gas barrier film under high-temperature evaporation. Multidimensional mixed nanocellulose and covalent organic framework nanosheets are introduced as functional fillers to form a stable intercalation structure with a polyvinyl alcohol matrix, so that the interfacial compatibility of the components is remarkably improved. The multi-component gas barrier film is endowed with high humidity resistance, chemical stability, high gas barrier property and the like by regulating and controlling the heat treatment temperature, the environment-friendly gas barrier film material shows good application prospects in the fields of chemical protective clothing and the like, and a new thought is provided for development of high-performance protective materials.

The invention provides a random copolymerization sulfonated phenyl polyphenyl ionomer material and a preparation method thereof, belongs to the technical field of proton exchange membrane materials of fuel cells, and aims to solve the technical problems of low conductivity and poor chemical stability of proton exchange membranes. The ionomer takes monomers I and II as raw materials, the raw materials are dissolved in a reaction medium of a polar solvent, a catalyst is added into a reaction system at the temperature of 70-100 DEG C, and the reaction continues for 3-6 h under the condition; pouring a reaction solution into a concentrated hydrochloric acid aqueous solution after the reaction is finished, separating out a precipitate, and filtering; and washing with concentrated hydrochloric acid and deionized water, and finally drying to obtain the target ionomer. The preparation method has the characteristics that the synthesis is simple, the cost is low, the molecular weight of the obtained polymer is high, the proton exchange membrane is good in conductivity, high in water absorption and the like, and the prepared proton exchange membrane has a wide application prospect when being used as a proton exchange membrane of a hydrogen fuel cell.

The invention relates to the technical field of three-step fine polishing methods for 19nm wafer regeneration, discloses a fine polishing method named'three-step fine polishing method for 19nm wafer regeneration ', and aims to solve the technical contradiction between macroscopic planarization and microscopic surface integrity of regenerated wafers in advanced process nodes. The method is characterized by comprising a first fine polishing step, a second fine polishing step and a third fine polishing step, and in each step, gradient decreasing polishing pad hardness, abrasive particle size and concentration, polishing pressure and pH value are adopted; and an on-line process monitoring and self-adaptive feedback control subsystem is used for assistance. By adopting the technical scheme, defects can be efficiently removed, damage can be repaired step by step, the wafer surface with ultralow defect density and excellent chemical stability is obtained, the requirements of the manufacturing process of 19nm and more advanced semiconductors are met, and the yield is increased.

The invention discloses a high-adhesiveness corrosion-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings. The powder coating is prepared from the following raw materials: modified epoxy resin, composite modified filler, a curing agent, a flatting agent, a dispersing agent, benzoin, sodium fluoride and the like. The epoxy resin is modified, amino is introduced to enhance the interaction with the grafted phosphate nano-silica, and BYK-163 is introduced, so that the compatibility is improved. In the composite modified filler, nano silicon dioxide A is grafted with a phosphate group, and can form a chemical bond with metal and quickly form a passive film; the nano silicon dioxide B is grafted with a fluorine-containing group, so that the coating is endowed with low surface energy and chemical stability, and long-acting protection is realized. Sodium fluoride destroys metal lattices at high temperature to form anchor points, and adhesive force is improved. The problem that a traditional powder coating is insufficient in adhesive force and corrosion resistance is solved, and the powder coating is suitable for metal protection in various complex environments and has wide application prospects.

The invention relates to the technical field of lithium-sulfur battery materials, and discloses a lithium-sulfur battery diaphragm preparation method, which comprises: 1, material preparation: using polyimide as a base material, boron nitride as a two-dimensional material, and deionized water as a solvent; step 2, substrate material pretreatment: placing a substrate film on a sample table of plasma treatment equipment, closing the equipment, vacuumizing to a set pressure, starting plasma treatment, setting power and time, taking out the film after the treatment is completed, and naturally airing; step 3, preparing dispersion liquid, namely weighing 0.5 g of boron nitride powder; according to the preparation method of the lithium-sulfur battery diaphragm, polyimide is selected as a base material and has excellent mechanical strength, thermal stability, chemical stability and electrical insulation performance, and the base material is chemically modified and physically treated in the preparation process; therefore, the effect of improving the mechanical strength and the thermal stability of the lithium-sulfur battery diaphragm can be achieved.

The invention discloses a preparation method and application of monolithic BiVO4 photocatalytic foamed ceramic. The method comprises the following steps: 1) preparing composite slurry containing BiVO4 powder, an organic additive and a reinforced phase; (2) uniformly attaching the composite slurry to the organic foam skeleton by adopting an impregnation method; 3) performing drying and heat treatment to remove organic components; and 4) performing high-temperature sintering to form the three-dimensional communicated porous structure. Through the structure-function integrated design, the problems that a traditional powder catalyst is difficult to recover, the activity of an immobilized catalyst is low and a supported catalyst is easy to fall off are solved. The obtained product is high in porosity, the compressive strength is larger than or equal to 0.1 MPa, the specific surface area is larger than or equal to 0.1 m < 2 > / g, visible light can be efficiently utilized for degrading emerging organic pollutants in water, and the degradation rate reaches 20-99%. The material has no nano-particle leakage risk, has excellent mechanical strength, chemical stability and engineering applicability, and provides a feasible scheme for large-scale application of a photocatalytic water treatment technology.

The invention discloses a nano-microporous composite aerogel material and a preparation process thereof, and belongs to the technical field of aerogel materials, the composite aerogel material comprises modified PTFE dispersion liquid, SiO2 sol, a magnetic hydrophobic modifier, self-repairing microcapsules, reinforced fibers and a surface modifier. The double-shell structure of the self-repairing microcapsule provides excellent mechanical strength and chemical stability, and the self-repairing microcapsule can crack and release the siloxane prepolymer core material during microcrack propagation. The PTFE dispersion liquid is pretreated through plasma-initiated graft polymerization, so that the interface bonding force between the reinforced fiber and the composite aerogel is remarkably improved. According to the treatment method, a chemical bonding layer is formed on the surface of the fiber, and the mechanical interlocking and chemical bonding force of an interface are enhanced, so that the layering phenomenon is avoided, and the stability of the material in a repeated impact environment is further improved.

The invention discloses a method for preparing activated carbon by using waste tire pyrolytic carbon black, which comprises the following steps of: selectively and dynamically screening and removing magnetic impurities, namely dynamically screening a pyrolytic product through an airflow grading device, separating out high-purity carbon black particles with the particle size of less than 10 microns, and removing metal impurities and residual steel wires by using a magnetic separation technology to obtain the activated carbon. And the purity of the carbon black reaches 95% or above. Therefore, the pore structure is optimized through combination of a wet method and high-temperature activation, the pore distribution is further maintained, regulated and controlled through freeze drying and solvent heat treatment, the specific surface area of the finally prepared activated carbon reaches 1500-2000 m < 2 > / g, and the pore volume retention rate reaches 90% or above; the technology not only effectively solves the problems of insufficient carbon black purity, unstable pore structure and high energy consumption in the prior art, but also remarkably improves the adsorption performance and chemical stability, so that the carbon black is widely applied to the fields of water treatment, gas adsorption, catalyst carriers and the like, and has the outstanding advantages of high efficiency, low consumption and environmental protection.