490 results about "Polymethyl methacrylate" patented technology

The invention discloses a waterproof long-lasting oil-control gel composition and a preparation method thereof, and belongs to the technical field of cosmetics. The composition comprises 4-6 parts of an oil absorption compound A, 9-13 parts of an oil absorption compound B and 70-95 parts of a gel matrix, wherein the oil absorption compound A is prepared from mesoporous silica and poloxamer 407, and the aperture of the oil absorption compound A is 5-10 nm; the oil absorption compound B is prepared from polymethyl methacrylate microspheres, isododecane and polyglycerol-3 diisostearate, and the pore diameter of the oil absorption compound B is 150 to 300 nm. According to the invention, through dual mechanisms of temperature response and volatilization driving, a dynamic gradient structure of bottom layer small aperture-surface layer large aperture is formed at skin temperature, and directional migration of grease is realized; meanwhile, the surface property transformation of the material after oil absorption is creatively utilized, a hydrophobic membrane is formed on the surface of the polymethyl methacrylate microsphere, a self-enhanced waterproof barrier is constructed, the unique effect that the more oil is absorbed, the more water is resisted is achieved, the problem of makeup removal caused by sebum and sweat can be effectively solved, and the makeup lasting time is remarkably prolonged.

The invention relates to the technical field of ceramic materials, in particular to a preparation method of a diatomite-based porous ceramic material and application of the diatomite-based porous ceramic material in wastewater pollutant treatment. The preparation method of the diatomite-based porous ceramic material comprises the following steps: mixing a basic raw material, a sintering aid, a pore forming agent and a binder, performing compression molding to obtain a green body, and sintering the green body, the basic raw materials comprise 80-85% of diatomite, 5-10% of kaolin, 0-5% of feldspar and 5-10% of sodium silicate; the mass of the sintering aid is 5% higher than that of the basic raw material; the mass of the pore-forming agent is 25-45% of that of the basic raw material, and the pore-forming agent is selected from one or more than two of crystalline flake graphite, polymethyl methacrylate and spherical graphite. By controlling the composition and dosage of the basic raw materials, the sintering aid and the pore-forming agent, a micro-nano hierarchical pore structure is formed, mechanical properties and permeability are improved at the same time, and good filtration and interception performance on pollutants in wastewater is achieved.

The invention belongs to the technical field of concrete, and particularly relates to green high-strength concrete and a preparation method thereof.The preparation method comprises the steps that an organic phase-change material with the phase-change temperature being 0-10 DEG C is taken and packaged with a polymethyl methacrylate shell, and organic microcapsules are prepared; taking an inorganic phase-change material with the phase-change temperature of 50-95 DEG C, and packaging the inorganic phase-change material with a urea-formaldehyde resin shell to prepare an inorganic microcapsule; the organic microcapsules and the inorganic microcapsules are mutually combined to form microcapsule pairs; coating the micro-capsule exterior with a silicon dioxide shell to obtain phase change particles; and mixing the phase change particles into the concrete to obtain the high-strength concrete. The green high-strength concrete disclosed by the invention contains two phase change materials with different phase change temperatures, so that heat can be stored during internal temperature rise, and the temperature rise rate in the concrete is effectively reduced; meanwhile, the low temperature of the outer wall needs to be relieved, the freezing damage influence is relieved, the internal and external temperature difference is reduced, caused thermal stress is reduced, and therefore the cracking risk is reduced.

The invention relates to a renewable industrial flue gas carbon dioxide adsorbent and a preparation method thereof. The method comprises the following steps: S1, mixing alkali metal, an aluminum oxide precursor, silicon oxide and a first solvent, or mixing an alkali metal solution, the aluminum oxide precursor, the silicon oxide and an optional second solvent, and then molding the mixed material to obtain microsphere particles; s2, mixing the microsphere particles and organic amine, and carrying out first loading treatment and drying treatment to obtain an organic amine loaded material; s3, roasting the organic amine-loaded material, mixing the obtained roasted material with a carrier material, and carrying out second loading treatment, so as to obtain the carbon dioxide adsorbent, the carrier material is selected from at least one of polystyrene-polyacrylic acid-polyethylene oxide, polymethyl methacrylate-b-polystyrene, zirconium oxide and a porous ceramic material. The carbon dioxide adsorbent is relatively high in adsorption capacity and relatively good in selectivity, reproducibility and stability; and large-scale industrial production and application are facilitated.

The invention relates to a preparation method of a water electrolysis hydrogen production composite electrode based on a zwitterionic polymer binder. According to the method, a traditional ionic binder Nafion is replaced with a zwitterionic polymer polysulfobetaine methacrylate, an electrode-electrolyte interface is optimized through a unique electrically neutral hydration layer structure, the rapid desorption behavior of bubbles is enhanced, and efficient transmission of reaction ions is also promoted; and regulating and controlling the mass ratio of the PSBMA binder to the catalyst by using a spraying process. The invention aims to overcome the defects of high cost, insufficient mass transfer and poor interface stability of the existing Nafion binder, and provides the composite electrode taking PSBMA as the binder and the preparation method of the composite electrode, and the provided composite electrode is simple in preparation process and controllable in cost, and has good popularization and application prospects.

The invention belongs to the technical field of electrocatalytic nitrate reduction catalysts, and particularly relates to a graded porous hollow carbon fiber catalyst with synergistic monatomic iron and ferric oxide clusters as well as a preparation method and application of the graded porous hollow carbon fiber catalyst. The preparation method specifically comprises the following steps: stirring polyacrylonitrile and polymethyl methacrylate in an organic solvent to obtain a spinning precursor solution; the preparation method comprises the following steps: taking ferrous sulfate heptahydrate and 1, 10-phenanthroline as ligands, and stirring in an organic solvent to obtain a metal organic ligand; the preparation method comprises the following steps: stirring a spinning precursor solution and a metal organic ligand, obtaining a metal precursor-loaded composite fiber through an electrostatic spinning technology, and then carrying out pre-oxidation and high-temperature pyrolysis to obtain the composite fiber. The prepared carbon fiber has good conductivity and a unique hollow hierarchical porous structure, transmission of reactants is greatly promoted while more active sites are exposed, the carbon fiber serves as a monatomic synergistic cluster catalyst carrier, rapid transmission of electrons is facilitated, and the electro-catalysis efficiency is effectively improved.

The invention discloses heat-resistant polymethyl methacrylate, a preparation method thereof and an optical film. The heat-resistant polymethyl methacrylate comprises a methyl methacrylate repetitive unit, a glutarimide repetitive unit and an N-methyl methacrylamide repetitive unit, and the sum of the number of the glutarimide constitutional unit and the number of the N-methyl methacrylamide constitutional unit is 1-20 mol% of the total number of the constitutional units. The glutarimide structural unit can be obtained by further cyclization reaction of an N-methyl methacrylamide structural unit, and the cyclization rate can be increased to 80-90% by adding a cyclization accelerator such as triethylamine, so that the thermal stability of the resin is improved, and the water absorption rate is reduced. The material can be used for preparing an optical film, has excellent heat resistance and moisture resistance, and is suitable for the field of optical display.

The invention relates to the technical field of new energy automobile power battery thermal management, in particular to a hydrated salt phase change microcapsule for a power battery and a preparation method of the hydrated salt phase change microcapsule. According to the specific technical scheme, hydrated salt serves as a core material, methyl methacrylate serves as a shell material monomer, the monomers are polymerized on the surfaces of hydrated salt liquid drops to form a polymethyl methacrylate shell layer through an interfacial polymerization method, effective packaging of a phase change material (hydrated salt) is achieved, and the microcapsule with high phase change latent heat, low leakage rate and long cycle life is obtained. In addition, other doped auxiliary materials are deposited on an oil-water interface to improve the heat conductivity of the microcapsule. And mixing the microcapsules with heat-conducting oil to prepare suspension liquid, and driving the suspension liquid to circularly flow between the power battery packs by a peristaltic pump. According to the invention, microcapsules and liquid cooling heat dissipation are combined to provide a new thought and practical and effective temperature control and heat dissipation effects for a heat management scheme of the power battery pack.

The invention relates to the technical field of polymer optical materials, in particular to an optical-grade polymethyl methacrylate material and a preparation method thereof, and the optical-grade polymethyl methacrylate material comprises the following raw materials in parts by weight: 95-105 parts of methyl methacrylate, 200-240 parts of a composite liquid medium, 1.5-2.5 parts of a composite additive and 0.08-0.12 part of an initiator. According to the invention, the composite additive is used as a main material and the composite liquid medium is used as an auxiliary material, so that the heat resistance and the size stability of the material are synergistically improved, powder in the composite additive is uniformly dispersed in a methyl methacrylate matrix to form a compact physical support skeleton, and the powder is matched with a treating agent and a methyl methacrylate molecular chain to form strong chemical bond combination; the composite liquid medium optimizes the flowability of a polymerization system, reduces polymerization internal stress residues, avoids material deformation caused by internal stress release at high temperature, and enhances high-temperature stability.

The application discloses a quinoline small molecule blended modified polymer dielectric material and a preparation method and application thereof, and belongs to the technical field of capacitor films. The preparation raw materials comprise quinoline derivatives, polymethyl methacrylate, styrene-methyl methacrylate copolymer, polyetherimide, polypropylene and N-methyl pyrrolidone solution, and the preparation steps comprise blending and film preparation. The blending solution or eutectic mixture is prepared through blending, and the polymer dielectric film is prepared through a flow casting method or bidirectional stretching. The prepared quinoline small molecule blended modified polymer dielectric film has excellent electrical properties, can reduce the leakage current of the polymer material, has high DC breakdown field strength, high energy storage density and low energy loss, and is easy to realize large-scale production.

The invention provides a porous conductive fiber, an intelligent fabric and a preparation method thereof, and belongs to the technical field of intelligent fabrics. The preparation method of the porous conductive fiber comprises the following steps: preparing a spinning solution from a conductive material, a thermoplastic elastomer and a template agent, and preparing the porous conductive fiber by combining a spinning method and a sacrifice template method; the conductive material is selected from at least one of a graphene material, an MXene material, a carbon nanotube material and a metal organic framework material; the template agent is selected from at least one of sodium chloride, cube sugar, starch, Janus particles, colloidal silica oxide, cellulose and polymethyl methacrylate. The porous conductive fibers and the hydrophobic elastic porous fibers are woven and integrated into the intelligent fabric. The porous conductive fiber prepared by the invention has relatively high strength, a wide stretching range and relatively high toughness; the intelligent fabric has good self-powered sensing performance, air permeability, washing resistance, cycle durability and one-way wet permeability, and can be worn by a human body and used for detecting human motion.

The invention belongs to the technical field of gas sensors, and discloses a portable ratio fluorescent film sensor for visual detection of oxygen as well as a preparation method and application of the portable ratio fluorescent film sensor. According to the sensor, polymethyl methacrylate is used as a base material, a carbon dot emitting blue light is used as a fluorescent indicator, protoporphyrin emitting red light is used as a fluorescent reference agent, and the two materials are physically blended to form a blue-red dual-emission system; under the excitation of 365nm ultraviolet light, the oxygen concentration affects the yield of active oxygen, the active oxygen quenches the fluorescence of the carbon dots, the fluorescence of protoporphyrin is stable, and the sensor gradually changes from blue violet to red. Meanwhile, the invention discloses an oxygen quantitative / semi-quantitative detection method of the sensor. The preparation process is simple, the cost is low, the detection operation is simple and convenient, the anti-interference performance is strong, the high-sensitivity visual portable detection of the oxygen concentration can be realized, and the sensor is suitable for the fields of food packaging, medical monitoring, industrial safety and the like, and has the potential of large-scale production and commercial application.

The invention discloses a method for preparing three-dimensional graphene foam from organic silicon waste liquid, the three-dimensional graphene foam and application, and the preparation method comprises the following steps: (1) preheating and evaporating the organic silicon waste liquid to obtain organic silicon waste liquid steam, and mixing the organic silicon waste liquid steam with water vapor to obtain organic silicon waste liquid steam; then hydrolyzing in an inert atmosphere with a carrier gas flow rate of 100-1000 sccm, cooling, filtering to obtain synthesis gas, and passing the synthesis gas through an alkaline substance to obtain purified synthesis gas; (2) introducing the purified synthesis gas into a reaction furnace, carrying out a chemical vapor deposition reaction by taking foamed nickel as a substrate to obtain a three-dimensional graphene foam initial product and hydrogen-rich synthesis gas, and then preparing the hydrogen-rich synthesis gas on the surface of the three-dimensional graphene foam initial product according to the dosage per unit area of 0.2-1.0 mL / cm < 2 >, an anisole solution proppant of polymethyl methacrylate with the mass content of 5%-10% is coated, and then the three-dimensional graphene foam is obtained through acid etching. The three-dimensional graphene foam prepared by the method has excellent conductivity, is suitable for the field of functional materials such as electromagnetic shielding materials, and has a good industrial application prospect.

The invention discloses a photostimulation response material which is characterized in that a < 7 > H-benzo [c] carbazole group or a < 7 > H-dibenzo [c, g] carbazole group is connected to the site 2 of 9-thioxanthone to construct a thioxanthone derivative, and the thioxanthone derivative is doped in a polymethyl methacrylate matrix to form a composite film, so that the photostimulation response material has a remarkable photostimulation response characteristic; the light color of the film is changed after the film is subjected to ultraviolet radiation for 10 seconds, afterglow emission of s level appears, and the film can be applied to the technical field of information encryption and security anti-counterfeiting.

A transparent wood surface imprinting optical device is provided. A preparation method for the device includes cleaning and drying surfaces of transparent wood, spin-coating polymethyl methacrylate (PMMA) on a substrate of the transparent wood to obtain a PMMA layer, and spin-coating an ultraviolet (UV) glue on the PMMA layer to obtain a UV glue layer; placing the transparent wood on a silicon wafer, attaching a transparent grating array imprinting template on the UV glue layer, exposing the UV glue layer, and removing the transparent grating array imprinting after the exposing, thereby to obtain a grating-structure-based transparent wood; and replacing the grating structure imprinting template by a lattice structure imprinting template to prepare lattice-structure-based transparent wood. The diffraction efficiency of the grating structure and the lattice structure on the transparent wood are greater and more stable than those of PMMA substrates.

The present application relates to a kind of compositions that can be engraved with high surface hardness white mark and its preparation method and application.The compositions that can be engraved with high surface hardness white mark include polymethyl methacrylate, styrene-acrylonitrile copolymer, acrylate rubber and black and white laser marking agent.The compositions that can be engraved with high surface hardness white mark provided by the present application are black and white after laser, and the white mark obtained has the same surface hardness as the composition before engraving, showing excellent scratch resistance.

The invention belongs to the technical field of solar cells, and discloses a flexible silicon substrate-indium phosphide solar cell and a preparation method thereof. The flexible silicon-based indium phosphide solar cell comprises a lower electrode, a flexible silicon solar cell, a first transparent conductive layer, a conductive adhesive, a second transparent conductive layer and an indium phosphide solar cell which are sequentially stacked from bottom to top, an antireflection film layer and an upper electrode are arranged on the indium phosphide solar cell; the conductive adhesive is obtained by dispersing polymethyl methacrylate microspheres coated with metal on the surface into an EVA solution. Heterogeneous integration is achieved through the transparent conductive adhesive, the two-end laminated cell is formed, the device is light, thin and flexible, the defects that a traditional four-end laminated cell is rigid, heavy, large in optical loss and the like are overcome, and the solar cell has good performance.

The invention relates to the technical field of preparation of bone cement, and particularly discloses a preparation method of a photo-thermal response type gold nanorod-bone cement composite material. The method comprises the following steps: synthesizing a gold seed solution; constructing a growth solution; controlling the growth of the nanorod; gradient centrifugal purification; carrying out surface ligand exchange (sulfydryl-PEG); preparing a bone cement composite material; curing and forming; gold nanorods (GNRs) are uniformly embedded into a polymethyl methacrylate (PMMA) bone cement matrix, so that the problems that free nanorods are easy to migrate and poor in bone targeting are solved. The local temperature can be accurately controlled, and damage to surrounding tissues is avoided. According to the invention, immunogen cell death (ICD) can be effectively induced, and anti-tumor immune response can be activated. According to the invention, enough mechanical support can be provided, and the stability after implantation is ensured.

The application relates to the field of rapid detection of new coronaviruses, in particular to a single-layer MoS2 phase sensor detection box for a new coronavirus vaccine antigen protein and a detection method thereof. The process that a MoS2 test sample is combined with a standard new coronavirus SARS-CoV-2 antibody is as follows: firstly, single-layer MoS2 is grown through a CVD method; further, ZnO is deposited on SiO2 / Si through atomic layer deposition (ALD); the single-layer MoS2 is transferred to a substrate through PMMA (polymethyl methacrylate) assisted wet transfer; the surface of the MoS2 is subjected to surface treatment; and the problem that current detection methods can only qualitatively detect whether there is a new coronavirus and cannot measure a specific concentration is solved. On the premise of ensuring high sensitivity, the actual concentration of a sample can be quantitatively measured. The pretreatment process of the sample is simple, the detection process is short in time consumption, the measurement result is intuitive and accurate, and the application has important significance for quantitative detection of the concentration of a new coronavirus for a large number of samples.

The invention discloses a method for rapidly forming a nano pattern by using a block copolymer and application thereof. The method for rapidly forming the nano-pattern by using the block copolymer comprises the following steps: dissolving the polystyrene-polymethyl methacrylate block copolymer in a mixed solvent consisting of a low-boiling-point organic solvent and a high-boiling-point organic solvent, wherein the boiling point of the low-boiling-point organic solvent is lower than 150 DEG C, and the boiling point of the high-boiling-point organic solvent is lower than 150 DEG C; the boiling point of the high-boiling-point organic solvent is higher than 150 DEG C, the high-boiling-point organic solvent is spin-coated on the surface of a substrate to form a thin film, annealing and plasma etching are carried out, and the periodic nano-pattern is obtained. According to the method for rapidly forming the nano pattern by using the segmented copolymer, the annealing time is shortened to be within 5 min, the production efficiency is remarkably improved, the formed nano pattern is high in structural orderliness and low in defect rate, and the method is suitable for the fields of semiconductor guided self-assembly photoetching, nanoimprint template manufacturing, high-density storage device preparation and the like.

The invention relates to an HHOF-TGU307 enhanced acrylic acid adhesive as well as a preparation method and application thereof, and belongs to the technical field of macromolecular functional materials. Aiming at the problem that the existing acrylic acid adhesive is difficult to meet the high-performance requirement in the aspects of bonding strength and mechanical property, and particularly the defects of insufficient bonding strength, easy aging, interface failure and the like in the emerging application fields of new energy and the like, HOF-TGU307 (hydrogen bond organic framework) is introduced into an adhesive system; the cohesive force and the adhesion capacity with a base material are obviously improved. The HOF-TGU307 material is a novel crystalline organic porous material with high specific surface area, high crystallinity and adjustable aperture, the HOF-TGU307 material shows unique solution processability and easy regeneration due to reversibility and flexibility of hydrogen bonds, and the HOF-TGU307 material has good biocompatibility and low cytotoxicity due to the metal-free characteristic; the characteristics enable the HOF to become a new platform of functional materials. The adhesive is formed by polymerization of two acrylic monomers in an ethanol solution through ultraviolet initiation, the process is simple and environment-friendly, and the obtained product has good storage and transportation stability. Performance tests show that the bonding strength of the adhesive on a PMMA (polymethyl methacrylate) base material can reach 1.36 MPa, and Fourier infrared spectroscopy and scanning electron microscope analysis verify good compatibility and dispersion state between HOF-TGU307 crystals and a polymer matrix. The adhesive provided by the invention has wide application prospects in the fields of structural bonding, photoelectric materials, automobiles, new energy and the like.

The utility model relates to the technical field of cutting supports, in particular to a PMMA composite board cutting auxiliary support. The cutting device comprises a base, a supporting column is fixedly connected to the upper surface of the base, an electric box is fixedly connected to one end of the base, a connecting rod is movably connected to the interior of the supporting column, a plug pin is connected to the interior of the supporting column in a threaded mode, one end of the plug pin is connected with the connecting rod in a clamped mode, and a cutting machine is fixedly connected to the arc face of the connecting rod. A clamping device is arranged on the upper surface of the base and comprises two clamping blocks, the lower surfaces of the two clamping blocks are both connected with two pulleys in a sliding mode, a groove is formed in the upper surface of the base, the arc faces of the two pulleys are both connected with the groove in a sliding mode, and the upper surfaces of the clamping blocks are fixedly connected with handles. The PMMA composite board cutting support solves the problem that due to the fact that the limiting effect of a traditional cutting support on a PMMA composite board is poor, the PMMA cutting position is prone to being incorrect in the cutting process.

The application belongs to the technical field of coatings, and particularly relates to a putty based on ultraviolet light curing resin and a preparation method and application thereof. The putty based on ultraviolet light curing resin comprises, by mass fraction, 30-50 parts of ultraviolet light curing resin, 25-45 parts of fillers, 3-6 parts of diluents, 3-6 parts of poly(methyl methacrylate-co-methyl methacrylate), and 0.05-1.5 parts of a photoinitiator. The ultraviolet light curing resin comprises a light curing unsaturated polyester resin and a polyester acrylate. The fillers comprise antioxidants / halloysite nanotubes / basalt fibers, nano calcium carbonate, and nano zirconium oxide. The putty based on ultraviolet light curing resin has good adhesion, flexibility, impact resistance, heat resistance, and high and low temperature resistance, and can be applied in the fields of automobile repair and furniture manufacturing.

The invention discloses a preparation method of an efficient graphene-carbon nanotube transistor sensor and a method for detecting Hg < 2 + > by using the sensor, and the preparation method of the efficient graphene-carbon nanotube transistor sensor comprises the following steps: S1, preparing graphene; s2, transferring the graphene; s3, carrying out reactive ion etching and thermal evaporation on the gold electrode; s4, surface functional modification of the sensor; the high-quality graphene film is prepared by a chemical vapor deposition method, and is transferred to the surface of the silicon wafer on which the carbon nanotubes are pre-grown by a PMMA (polymethyl methacrylate) auxiliary transfer method to form a unique bent and curled structure, and the structure not only greatly increases the effective specific surface area of the material, but also gives full play to the synergistic effect of the graphene and the carbon nanotubes, so that the performance of the material is improved. The electrochemical activity of the sensor is obviously improved, so that the Hg < 2 + > detection sensitivity reaches a picomole level.

The invention provides a self-repairing glass fiber composite material as well as a preparation method and application thereof. The self-repairing glass fiber composite material comprises a self-repairing layer, a matrix layer and a glass fiber prepreg which are sequentially stacked, the material of the self-repairing layer comprises self-repairing polyurethane; and the material of the matrix layer comprises polymethyl methacrylate. According to the self-repairing glass fiber composite material, specific structural design and material selection are adopted, the photovoltaic module can be endowed with a self-repairing function, the repairing efficiency is high, and the problem that the performance and the service life of the module are affected due to the phenomena of scratching, cracking, damage and the like on the surface of the module is avoided.

The invention relates to the technical field of quartz table top production, in particular to a production process of an integrated quartz table top, which comprises the following steps: S1, proportioning: preparing polymethyl methacrylate resin, quartz sand mixed granite superhard inorganic particles and a high polymer material additive according to the proportion; s2, mixing the materials, namely putting the materials in the ingredients into a stirring pressure barrel with a vacuumizing function, fully dispersing and stirring at a high speed, and vacuumizing while stirring, so as to obtain uniform bubble-free slurry; and S3, compressed air is introduced, and the slurry is pressed into the mold through the conical bottom of the pressure barrel. The table top, the water tank, the front hanger and various water retainers are integrated, seamless integrated forming of the water tank, the table top, the various water retainers and the front hanger can be achieved, and the problems that in the existing quartz table top machining process, cutting and bonding are needed, dust pollution is caused, solid waste is generated, the machining cost is high, the utilization rate is low, and pollution is large are solved.

The invention provides a coating with optical permeability and a preparation method thereof. The coating with optical permeability is prepared from the following raw materials in parts by mass: 25 parts of water-based acrylate copolymer emulsion, 25 to 35 parts of water, 0.8 to 1.5 parts of transparent functional particles, 16 to 20 parts of functional modified inorganic filler, 5.5 to 7.5 parts of boric acid ester-silanol-hydroxyl three-function cross-linked gel precursor solution, 0.2 to 0.5 part of thickening agent, 0.2 to 0.4 part of defoaming agent, 0.5 to 1 part of dispersing agent and 0.1 to 0.3 part of preservative. 0.2 to 0.5 part of an organic amine alcohol compound; the transparent functional particles comprise at least one of glass sand and cross-linked polymethyl methacrylate microspheres; the functional modified inorganic filler comprises at least one of amino silane modified snowflake white quartz sand and amino silane modified calcined sand white marble. The coating with optical permeability is suitable for the field of indoor and outdoor decoration.

The application discloses a regenerated cationic cellulose-based composite filter membrane and a preparation method and nanometer plastic removal application thereof, and belongs to the technical field of regenerated cellulose water treatment filter materials. In the application, a sodium hydroxide-urea-thiourea ternary system is used to fully dissolve cellulose, the cellulose is modified by 2,3-epoxypropyl trimethylammonium chloride cation, a PVDF membrane is used as a base, and a hydrophilic composite filter membrane is prepared by vacuum filtration and loading of a cationized cellulose layer. The preparation process is mild, and the defects of the traditional cellulose membrane, such as insufficient dissolution, uneven pore size and poor screening precision, are solved. The filter membrane surface is positively charged, the hydrophilicity is greatly improved, the water contact angle is only 39°, the particle size of 50-500 nm carboxylated nanometer plastics can be efficiently intercepted, the removal efficiency of 100 nm polystyrene nanometer plastics reaches 97.01%, and the water flux is excellent. The process is green and low-cost, can remove polystyrene, polymethyl methacrylate and polyvinyl chloride nanometer plastics in a wide range, and has a good engineering application prospect in the field of deep treatment of water body nanometer plastic pollution.

This invention provides a high-gloss black, high-heat-resistant, and easily moldable polymethyl methacrylate (PMMA) composition and its preparation method. The composition comprises the following components in parts by weight: 40-75 parts of polymethyl methacrylate (PMMA) resin, 5-20 parts of toughening agent, 5-30 parts of SAN resin, 10-20 parts of heat resistant agent, 0.5-2 parts of release agent, and 1-5 parts of processing aid. This invention adds appropriate amounts of St-AN-MAH type heat resistant agent and MSAN resin, which synergistically improve the heat resistance of the material. Simultaneously, the addition of palmitic acid improves the material's molding properties. The addition of ACR type toughening agent enables the preparation of a PMMA material that combines toughness, high gloss blackness, high heat resistance, and easy molding, expanding the application range of this material and enabling its widespread use in new energy vehicles.

This invention provides a PMMA-PCL-based composite solid electrolyte, its preparation method, and its applications. The composite solid electrolyte comprises the following components: polymethyl methacrylate, polycaprolactone, lithium salt, active lithium-containing filler, and an unsaturated alkynyl compound with photoinduced secondary self-enhancing properties. This invention promotes supramolecular homogeneous integration within the electrolyte through magnetic field-microwave coupling and, for the first time, introduces an unsaturated alkynyl compound with photoinduced secondary self-enhancing properties to anchor solvent molecules and anions, thereby regulating the local coordination environment of lithium ions at the interface to improve lithium-ion transport and interfacial stability of the PMMA-PCL-based composite solid electrolyte at room temperature. This results in the PMMA-PCL-based composite solid electrolyte provided by this invention exhibiting excellent room-temperature performance and significantly improving the performance of symmetric cells at 0.1 mA cm⁻¹. ‑1 The time it takes for the current density to allow for stable cycling.