412 results about "Fiber matrix" patented technology

The invention relates to the technical field of epoxy resin composite materials, in particular to an epoxy resin-based composite material and a preparation method thereof. The epoxy resin-based composite material comprises modified carbon fibers and an epoxy resin base material impregnated on a modified carbon fiber matrix, and the epoxy resin base material comprises the following raw materials in parts by weight: 80-100 parts of epoxy resin, 4-18 parts of a toughening elastomer, 24-45 parts of a curing agent and 1-3 parts of an accelerant. The carbon fibers are subjected to surface grafting hyperbranched molecular modification, so that the interface action between the modified carbon fibers and an epoxy resin matrix can be remarkably enhanced, and meanwhile, the high strength and high temperature-resistant stability of the carbon fibers are utilized, so that the epoxy resin-based composite material has good toughening, reinforcing and temperature resistance improving effects.

The invention relates to a high-binding-force steel fiber for concrete applied to the technical field of steel fibers, on the basis that the steel fiber is bent for multiple times, a forked fiber matched with a steel fiber matrix is further arranged, the forked fiber and the steel fiber matrix can form a cross shape after being assembled, and when the steel fiber is combined with the concrete, the concrete can be in cross contact with the steel fiber, so that the steel fiber is formed. Compared with only bending treatment, even if the interior of the concrete is cracked and the steel fibers are stressed, the concrete is difficult to separate from the crossed steel fibers, and the crossed structure of the concrete and the steel fibers greatly improves the binding force with the concrete, so that the effect of improving the strength of the concrete is better; the crossed ends of the forked fibers and the steel fiber matrix can form'stone knots', so that the positions of the forked fibers are limited, the forked fibers and the steel fiber matrix are difficult to generate relative displacement, and the stability of the crossed steel fibers is effectively ensured.

This application discloses a heat-resistant protective member and a battery. The heat-resistant protective member includes a compound layer, and the compound layer includes a fiber matrix and a resin. The resin is dispersed in pores of the fiber matrix and / or a surface of the fiber matrix, and a volume proportion of the fiber matrix in the compound layer is 50% to 75%. In this way, the thermal shock when a battery cell is ignited and exploded can be resisted, and the structural integrity can still be maintained without being broken through under the thermal shock, thereby providing effective heat insulation and protection for a battery pack.

The invention relates to the technical field of composite fabrics, and discloses a preparation method of an antibacterial flame-retardant composite superfine fiber fabric, nylon 6 and low-density polyethylene are subjected to spinning, stretching and heat setting to obtain a fabric base layer, tris (2-chloroethyl) phosphate, p-dimethylaminobenzaldehyde and the like are used as raw materials, and the antibacterial flame-retardant composite superfine fiber fabric is prepared. Performing quaternization and amination reaction to obtain an antibacterial flame-retardant chain extender, and participating in synthesis of polyurethane to obtain a functional layer; the materials of all the layers are flatly laid according to the structure of the fabric base layer, the adhesive layer, the barrier layer, the adhesive layer and the functional layer, and the antibacterial flame-retardant composite superfine fiber fabric is obtained after hot-pressing compounding. The phosphorus and nitrogen elements and the Schiff base in the structure can block the exchange between the fiber matrix and oxygen and heat in the air, so that the flame-retardant effect is achieved; the quaternary ammonium salt cations interfere with metabolism of bacteria through electrostatic interaction, so that the bacteria die due to a'bacterial solution 'phenomenon, and an antibacterial effect is achieved.

The invention relates to the technical field of fibers, and discloses a preparation method of antibacterial modified fibers for textile fabrics, nylon 6 and copper-tea polyphenol-based hyperbranched polyamide are added into formic acid, the mixture is stirred and then spun by an electrostatic spinning machine, and the antibacterial modified fibers for the textile fabrics are obtained. The hyperbranched polyamide has good compatibility with nylon 6, contains a three-dimensional dendritic hyperbranched molecular chain, has a good toughening effect on nylon 6 fibers, and enables the fibers to maintain good breaking strength while improving the elongation at break of the fibers. The copper-tea polyphenol-based hyperbranched polyamide contains tea polyphenol active antibacterial substances and antibacterial copper ions, so that the antibacterial performance of the fiber is remarkably improved. Meanwhile, the copper ions, the tea polyphenol and the catechol-based hyperbranched polyamide form a tight and firm coordination effect, and the copper ions and the tea polyphenol are also difficult to elute from a fiber matrix, so that the fiber still keeps excellent antibacterial performance.

The invention relates to the technical field of polyester fibers, and discloses a waterproof antibacterial polyester fiber fabric and a preparation method thereof. A waterproof antibacterial copolyester polymer with a structure similar to that of PET polyester is obtained through esterification condensation polymerization of raw materials such as N, N '-di-Boc-S-methyl isothiourea and dimethyl terephthalate, the structure of the waterproof antibacterial copolyester polymer contains quaternary ammonium salt, guanidyl and a hydrophobic long-chain structure, the waterproof antibacterial copolyester polymer can be uniformly distributed in a polyester fiber matrix, migration of antibacterial groups is avoided, and the antibacterial property of the polyester fiber is improved. The antibacterial performance on bacteria is better exerted; the C-F bond energy is high, fluorine atoms are more easily embedded into a polymer, a channel for water molecules to migrate into a coating film is blocked, a stable protection layer can be formed on the surface of the fiber fabric, fibers are wrapped, moisture is prevented from permeating into the fibers, and therefore the waterproof effect is achieved; meanwhile, the hydrophobic layer also has certain durability and does not lose efficacy after being washed with water for many times.

The invention shows a lyocell fiber containing a matting agent whereby the matting agent comprises between 2 wt.-% and 5 wt.-% BaSO4 and less than 1 wt.-% TiO2, with respect to fiber weight, whereby the matting agent is incorporated in the fiber matrix in the form of particulates. The invention further concerns the use of said fiber for the production of a textile fabric and a textile fabric containing said fibers.

The invention belongs to the technical field of packaging carton production, and discloses a folding-resistant damp-proof packaging carton and a preparation method thereof. The folding-resistant moisture-proof packaging carton is prepared from the following raw materials in parts by weight: 70 to 80 parts of papermaking wood flour, 8 to 10 parts of filler, 30 to 40 parts of modified plant fiber, 20 to 30 parts of high-toughness plant fiber-based composite material, 8 to 10 parts of carboxymethyl cellulose and 1 to 2 parts of additive. According to the folding-resistant damp-proof packaging carton and the preparation method thereof, the defects that a packaging carton is prone to being affected with damp, cracks exist after being folded for multiple times, and the packaging carton is difficult to reuse are overcome. Through the modified plant fibers and the high-toughness plant fiber-based composite material, the folding resistance of the packaging carton is effectively improved, and meanwhile, the moisture resistance of the carton is also improved.

The invention relates to the technical field of heaters, in particular to a layered fabric heating battery cell, heating battery cell manufacturing equipment and a control system thereof.The layered fabric heating battery cell comprises warp yarn and weft yarn which are composed of conductive composite fibers, and the warp yarn and the weft yarn are woven into the layered fabric heating battery cell through a loom; the conductive composite fiber is prepared from a conductive material and a fiber matrix material in a laminating manner; according to the layered fabric heating cell provided by the invention, through uniform weaving of the flexible conductive composite fibers, heat is uniformly distributed in the fabric, the problem of local overheating or supercooling is avoided, and due to the fact that the resistance of the conductive composite fibers is relatively low, the electric energy consumption required by heating is reduced.

The present invention discloses a carbon fiber matrix composite structure grinding wheel and a manufacturing method thereof. The carbon fiber matrix composite structure grinding wheel comprises a carbon fiber matrix, a grinding wheel piece and a monofilament pre-tightening cloth. The grinding wheel piece is sleeved on the carbon fiber matrix, and the two are bonded by gluing. The monofilament pre-tightening cloth is wound on the carbon fiber matrix. The carbon fiber matrix composite structure grinding wheel of the present invention solves the problems of large mass, low specific strength and modulus, large inertia and poor vibration resistance of existing metal grinding wheels; the present invention also discloses a manufacturing method of a carbon fiber matrix composite structure grinding wheel, by which a carbon fiber matrix composite structure grinding wheel can be manufactured.

The invention discloses a fiber bragg grating deflection sensing system and a manufacturing method thereof, the fiber bragg grating deflection sensing system comprises a multi-layer carbon fiber belt reinforced matrix, the carbon fiber belt reinforced matrix is formed by superposing at least two layers of unidirectional carbon fiber prepreg belts or dry carbon fiber fabrics, and the at least two layers of carbon fiber belts are used for clamping a fiber bragg grating therebetween; a low-rigidity sensing window area is arranged on the carbon fiber belt reinforced matrix; the fiber bragg grating sensing unit comprises at least a plurality of fiber bragg gratings which are accurately and axially arranged between the at least two layers of carbon fiber prepreg tapes; the low-rigidity sensing window areas correspond to the fiber bragg gratings in number and position; the coating further comprises strong interface bonding glue; fiber leads at two ends of the fiber grating are led out from the end part of the sensing system; according to the system, the high rigidity of the cross-laid carbon fiber matrix in the measurement direction is matched with the strain concentration effect of the low-rigidity window area and the efficient strain transmission of the low-modulus glue to the FBG, so that high sensitivity and excellent linearity are realized through the combined action of the high rigidity, the strain concentration effect and the efficient strain transmission of the low-modulus glue to the FBG.

The invention belongs to the technical field of temperature-regulating and sweat-discharging materials, and particularly relates to a temperature-regulating and sweat-discharging material and application thereof in fibers and flocculus. The preparation method of the temperature-regulating and sweat-discharging material comprises the steps of surface modification of inorganic nanoparticles, preparation of a shell material solution, preparation of a core material solution and preparation of the temperature-regulating and sweat-discharging material. Finally, the phase-change microcapsule, namely the temperature-regulating and sweat-discharging material, which takes the phase-change material as a core and takes the composite material of the cross-linked polyvinylpyrrolidone / 2-acrylic acid-2-[[(butylamino)-carbonyl] oxo] ethyl ester copolymer doped with the inorganic nanoparticles as a shell is obtained. The temperature-regulating and sweat-discharging material is high in thermal conductivity and good in washable effect, can be added into a fiber matrix before spinning, can be used for preparing filling flocculus, and can be prepared into coating liquid to form a coating on the surface of a fabric in forms of hot rolling, spraying and the like; the fabric has potential application value in multiple fields such as work clothes, firefighter uniform, warmth retention articles, bedding articles, sportswear, shoes and hats and the like.

The invention relates to the technical field of flocking fibers, and discloses a fiber material for electrostatic flocking of an automobile spring and a preparation method thereof.The preparation method comprises the steps that a diamine monomer and a diacyl chloride monomer are subjected to a polymerization reaction and then react with KH550 modified mesoporous nano-silica, and polyamide modified mesoporous nano-silica is obtained; and finally, blending with nylon 66, melting and spinning to obtain the nylon fiber. The silicon dioxide contains a hollow mesoporous structure, and when sound waves enter the silicon dioxide, the sound waves can be reflected and scattered for multiple times in the internal hollow and pore channels, so that the energy of the sound waves is dissipated, and a good sound absorption effect is achieved. Meanwhile, a polyamide molecular chain grafted on the surface of the silicon dioxide contains a large number of hydrophobic alkyl long chains which are uniformly dispersed in a fiber matrix, so that the hydrophobicity of the fiber matrix can be improved, the water contact angle and the water resistance and waterproofness are improved, and good practical application is achieved in the aspects of electrostatic flocking fibers for automobile springs and the like.

The invention relates to the field of unmanned aerial vehicle materials, and discloses a modified carbon fiber material for an unmanned aerial vehicle, which comprises the following structural layers: a carbon fiber matrix; the Ni-Ti transition layer is deposited on the surface of the base body, the thickness of the Ni-Ti transition layer is 18-22 microns, and the mass ratio of Ni to Ti is 49.5: 50.5-50.5: 49.5; the nano composite coating covers the transition layer and comprises a nickel aminosulfonate matrix, nano alpha-Al2O3 and silicon carbide whiskers, the nano alpha-Al2O3 and the silicon carbide whiskers are dispersed in the nickel aminosulfonate matrix, the content of Al2O3 is 78-82 g / L, and the content of the silicon carbide whiskers is 14-16 g / L. Through the gradient composite interface structure design, cross-scale synergistic reinforcement of the metal matrix, the ceramic layer and the resin layer is achieved, the synergistic effect of chemical bonding and physical anchoring is further enhanced, and the material can still keep excellent interface stability in a thermal-mechanical coupling environment.

The invention relates to the technical field of battery negative electrode material preparation, in particular to a porous carbon fiber and a preparation method and application thereof. The porous carbon fiber comprises a porous carbon fiber matrix and lithium-loving functional particles, the porous carbon fiber matrix is provided with holes distributed in the surface and / or the interior of the porous carbon fiber matrix; the lithium-loving functional particles are distributed on the porous carbon fiber matrix in a surface loading and / or embedding manner, and the lithium-loving functional particles are loaded and / or embedded on the surfaces of at least part of holes; based on the total volume of the holes, the volume of the holes with the aperture smaller than or equal to 50 nm in the holes is not smaller than 70%. When the porous carbon fiber provided by the invention is applied to a battery, the problems of non-uniform lithium metal deposition, large volume expansion, poor stability, high cost and the like in the prior art can be improved.

The invention discloses an anti-ultraviolet high-flame-retardant polyester fiber and a preparation method thereof. The polyester fiber is prepared from the following raw materials in parts by weight: 100 parts of polyester chips, 20-60 parts of core-shell flame-retardant anti-ultraviolet particles and 2-4.5 parts of an anti-dripping agent. According to the invention, a porous alumina-titanium dioxide compound is used as a carrier, a magnesium hydroxide flame retardant, iron-doped carbon dots with photo-thermal performance and auxiliaries (an antioxidant and an ultraviolet light absorber) are combined with the carrier to construct a structural system loaded with multiple active components: functionalized flame-retardant particles, and then a polyurethane microporous membrane is coated, so that the flame-retardant polyurethane composite material is obtained. The core-shell type flame-retardant anti-ultraviolet particles are added into polyester fibers, so that the anti-ultraviolet performance and the flame-retardant performance of the polyester fibers can be remarkably improved. The polyester fiber provided by the invention can adaptively increase the release rate of the ultraviolet absorbent and the antioxidant when the ultraviolet property is enhanced in the environment, so that more optimized protection can be provided for a polyester fiber matrix at the moment.

The invention relates to the technical field of sand mold casting, and particularly discloses a gradient exhaust sand mold for an aluminum alloy thin-walled workpiece and a preparation method thereof.The sand mold comprises a cavity surface layer (with the hardness ranging from 90 HB to 95 HB), a transition layer (with the hardness ranging from 80 HB to 70 HB and a back sand layer (with the hardness ranging from 60 HB to 65 HB) which are arranged from inside to outside, and microporous ceramic exhaust rods (with the diameter ranging from 0.3 mm to 0.8 mm and the distance ranging from 1 mm to 3 mm) are embedded in the cavity surface layer; the exhaust rod is composed of a mullite fiber matrix and a nanometer gamma-AlO coating, the porosity is 40-50%, and the exhaust rod penetrates through the back sand layer to form a directional exhaust network. The preparation method comprises the following steps: mixing sand layer by layer (the cavity layer contains 1.0-1.5% of phenolic resin, and the back sand layer contains 0.4-0.6% of resin and 4-6% of starch); when sand is filled to the position 1-3 mm away from the surface of the cavity, an exhaust rod is implanted (the positioning precision is + / -0.1 mm); gradient compaction is carried out (the high pressure of a cavity is 3.0-4.0 MPa, the vibration of a transition area is 20-30 Hz, and the back sand airflow is 0.1-0.2 MPa); and carrying out microwave curing (2.5 to 3.5 kW, 60 to 120 s). The defects of hot cracks and air holes of the thin-wall part (smaller than or equal to 5 mm) are overcome synchronously, and the casting yield is increased to 95% or above.

This application discloses a heat-resistant protective member and a battery. The heat-resistant protective member includes a reinforcing layer, a functional layer, and a strengthening layer that are sequentially arranged; the functional layer includes a first resin and a filler dispersed in the first resin; and the reinforcing layer and the strengthening layer each include a fiber matrix. In the foregoing manner, thermal impact of a single battery during ignition and detonation can be resisted, and structural integrity under the thermal impact can still be prevented from being broken through, so as to provide effective heat insulation and protection for a battery pack.

The invention relates to the technical field of polyester fibers, and discloses a waterproof and antibacterial polyester fiber fabric and a preparation method thereof. N,N'-bis(2-hydroxyethyl)ethylenediamine, N,N'-di-Boc-S-methylisothiourea and the like are used as raw materials, and the raw materials are subjected to an esterification polycondensation reaction with dimethyl terephthalate to obtain a waterproof and antibacterial copolyester polymer having a structure similar to that of PET polyester. The waterproof and antibacterial copolyester polymer contains a quaternary ammonium salt, a guanidine group and a hydrophobic long chain structure, which can be evenly distributed in a polyester fiber matrix, thereby avoiding the migration of antibacterial groups and better exerting the antibacterial performance against bacteria. The C-F bond energy is high, and fluorine atoms are more easily embedded in the polymer, blocking the channel for water molecules to migrate into the inside of the coating film, and a stable protective layer can be formed on the surface of the fiber fabric to wrap the fiber and prevent water from penetrating into the inside of the fiber, thereby playing a waterproof role. At the same time, the hydrophobic layer also has certain durability and can withstand multiple washings without failure.

Material comprising a flexible porous hydrophilic polymer foam or fibre matrix comprising two matrix faces and therebetween a structural matrix framework defining a network of cells, having a cell network surface and therein a network of pores anda powder charge comprising antimicrobial additive and / or wound dressing additive,wherein said powder charge is comprised at said matrix face or faces and / or within said cell network or within said structural matrix frameworkand wherein said additive is micronized,wherein said micronized additive has single particle size population greater than or equal to 1 micron and / or has loss on drying (L.O.D) less than 2% and / orsaid powder charge additionally comprises and flowing agent and / or bulking agent wherein micronized additive is co-located with said flowing agent and / or bulking agent,method for the preparation thereof comprising micronizing said additive and dosing powder charge to said matrix or a reactive phase for the manufacture of said matrix,devices comprising said material and uses thereof.

Disclosed herein are embodiments of a non-woven hybrid-scale fiber matrix sheet which can be used to improve wound healing. The non-woven hybrid-scale fiber matrix sheet may be both microporous, due to the hybrid-scale fiber matrix, as well as macroporous through the addition of cuts or perforations in the hybrid-scale fiber matrix sheet. The micro and macroporous sheet can improve biological healing at a wound site.

The invention relates to the technical field of thermal insulation materials, in particular to a high-temperature-resistant aerogel composite material and a preparation method thereof. The high-temperature-resistant aerogel composite material is prepared from the following components in parts by weight: 15 to 35 parts of reinforced fiber matrix, 43 to 65 parts of silicon-aluminum-zirconium ternary aerogel network, 3 to 12 parts of functional nano filler, 2 to 8 parts of zinc borate flame-retardant component and 0.5 to 2 parts of surface hydrophobic modified layer. Wherein the reinforced fiber matrix is composed of aluminum silicate fibers, silicon carbide fibers and aluminum oxide nanofibers; the molar ratio of silicon to aluminum to zirconium in the silicon-aluminum-zirconium ternary aerogel network is 5: 2: 1; the functional nanofiller comprises aluminum oxide nanoparticles, titanium oxide nanoparticles, carbon nanotubes and boron nitride nanosheets; the zinc borate flame-retardant component is zinc borate; the surface hydrophobic modification layer comprises an inner methyltrimethoxysilane modification layer and an outer hexamethyldisilazane modification layer. The high temperature resistance and thermal shock resistance of the material are remarkably improved, a low-energy-consumption preparation process is adopted, and the material has excellent comprehensive performance.

The embodiment of the invention provides an insulating film and a preparation method thereof, an insulating composite film and a preparation method thereof, and electrical equipment, and relates to the technical field of expansion materials. The insulating film comprises a fiber matrix and an expansion compound, and the expansion compound is compounded in the fiber matrix. The insulating film can be prevented from being separated or cracked, and the electrical property and the mechanical property of the insulating film are improved.

The present disclosure provides a delivery system comprising a fibrous substrate with continuous pores and a composition homogenously bonded to the pores. The fibrous substrate comprises at least a predetermined percentage of cotton and one or more materials selected from the group of consisting spandex, nylon, silver and antimicrobial mesh. The composition comprises a predetermined percentage of beeswax and a predetermined percentage of mineral oil. The predetermined percentage of beeswax is greater than the predetermined percentage of mineral oil.

The invention relates to a fiber containing an elastic wall phase change microcapsule as well as a preparation method and application thereof, and relates to the field of composite fibers. The fiber containing the elastic wall phase change microcapsule comprises a fiber matrix and the elastic wall phase change microcapsule, the elastic wall microcapsule comprises a wall material and a core material, the wall material comprises a polyamide 66 / polyethylene glycol copolymer, and raw materials of the core material comprise polyimide aerogel and a polyethylene glycol phase change material. The fiber contains the elastic wall phase change microcapsule, and the problems that in the prior art, the microcapsule used by the phase change polyamide fiber is difficult to deform, the requirement for the particle size is strict, then a core material is prone to leakage, and the compatibility with raw materials of a fiber matrix is poor can be solved.

The invention relates to 42-47g / m < 2 > ultra-low basis weight corrugating medium paper and a production process thereof, and belongs to the technical field of packaging paperboards. Kaolin is introduced as a high-quality filler in the production process of the corrugating medium paper, and phthalimide is used as a modifier, so that the dispersity and stability of kaolin in a fiber matrix are effectively improved, the binding force between fibers is enhanced, and the overall structural strength and mechanical property of the corrugating medium paper are remarkably improved. Meanwhile, corn starch is treated by beta-amylase to prepare modified starch, so that the viscosity and the permeability of the modified starch are improved, the combination among fibers is further consolidated, and the tensile strength and the bursting strength of the corrugated medium paper are improved. Besides, polyethylene glycol and nanocellulose are added as a lubricant and a stabilizer, friction between fibers and filler is reduced, the flexibility and plasticity of paper are improved, and layering or precipitation of modified components is prevented, so that the production process is optimized, the production quantitation is reduced, and the economical efficiency and environmental friendliness of the material are improved.

The invention discloses a flame-retardant fiber and application thereof, the flame-retardant fiber comprises a flame-retardant fiber matrix and an organic-inorganic flame-retardant coating coated on the flame-retardant fiber matrix, and the organic-inorganic flame-retardant coating is formed by adopting an organic-inorganic phosphorus-containing flame retardant; according to the organic and inorganic phosphorus-containing flame retardant, hydroxylated carbon nanospheres are adopted as a core layer, a reaction product of bis (4-chlorphenyl) phosphoryl chloride and derivatives thereof and 4, 4 '-diaminodiphenyl sulfone and derivatives thereof is adopted as a shell layer, and the core layer and the shell layer are connected through acting force including covalent bonds and / or hydrogen bonds to form a core-shell structure; the flame-retardant fiber disclosed by the invention not only has an excellent flame-retardant effect, but also has better effects in other aspects such as antistatic property, spinnability, fiber system stability and the like, and is suitable for preparing flame-retardant textiles.

The invention belongs to the technical field of refractory thermal insulation materials, and provides a silicon dioxide-organic modified montmorillonite nanofiber membrane as well as a preparation method and application thereof. The method comprises the following steps: mixing tetraethyl silicate, absolute ethyl alcohol, water and hydrochloric acid, heating, and spinning to obtain a silicon dioxide nanofiber membrane; the silicon dioxide nanofiber membrane is soaked in an organic modified montmorillonite solution for ultrasonic oscillation and then dried, and the SiO2 / O-MMT nanofiber membrane is obtained. The SiO2 / O-MMT nanofiber membrane prepared through an electrostatic spinning method and an in-situ cross-linking method has good heat insulation and heat preservation capacity, ultrathin O-MMT nanosheets are distributed in a nano-porous SiO2 fiber matrix, O-MMT forms a solid structure in the porous matrix and is cross-linked with SiO2 fibers, the mechanical property of the ceramic membrane is improved through the synergistic effect of the O-MMT nanosheets and the SiO2 fibers, and the performance of the ceramic membrane is improved. Meanwhile, the thermal insulation performance of the ceramic fiber membrane is enhanced.

Disclosed is a media for capturing carbon dioxide from a gas stream of ambient air or industrial exhaust. The media includes a fiber matrix having fine fiber strands formed from at least one first polymer capable of capturing carbon dioxide through absorbance or adsorbance. The fine fiber strands have a first mean diameter of 5000 nm or less. Further, the media includes a plurality of nodules dispersed in the fiber matrix, and the plurality of nodules are made from a nodule material capable of capturing carbon dioxide through absorbance or adsorbance. The media can be configured for use in a carbon capture element of a carbon capture cell disposed within a carbon capture system, such as a direct air or point source carbon capture system.

The invention relates to the technical field of lithium batteries, in particular to a composite solid electrolyte membrane, a preparation method thereof and a lithium metal battery. The composite solid electrolyte membrane comprises a fiber porous matrix and a filling phase, the fiber porous matrix is of a three-dimensional porous structure formed by ordered arrangement and crosslinking of fiber matrixes, and pores of the fiber porous matrix are filled with the filling phase; a Hellman orientation factor fgt of the fibrous porous matrix; 0.5 part; the fiber matrix comprises a fiber material and a first functional additive, and the first functional additive is attached to the fiber material; the filling phase comprises a polymer material, a lithium salt and a plasticizer. According to the composite solid electrolyte membrane disclosed by the invention, the components and structures of the fiber porous matrix and the filling phase are optimized, so that the ordered fiber porous matrix and the filling phase can play a better synergistic effect; therefore, the composite solid electrolyte membrane has excellent performance in the aspects of high ionic conductivity, wide electrochemical window, long cycle life, high safety and the like.