169 results about "Cellulose nanocrystals" patented technology

A method of adsorbing a dye from an aqueous solution including contacting a composition with the aqueous solution. At least a portion of the dye adsorbs to the composition. The composition includes biochar, cellulose nanocrystals, and a layered double hydroxide (LDH). The LDH includes Cu and Fe. Particles of the LDH and the biochar at least partially cover an outer surface of the cellulose nanocrystals.

The invention provides core-shell structure reinforced white carbon black / graphene oxide hybridized glass-lined porcelain glaze and a preparation method thereof. The porcelain glaze is composed of a basic glaze material and a core-shell structure hybrid reinforcement phase dispersed in the basic glaze material, the reinforcement phase takes white carbon black as a core and zirconium oxide as a shell, and a three-dimensional hybrid network formed by KH-560 grafted cellulose nanocrystals or carbon nanotubes and graphene oxide is constructed between the core and the shell. The preparation method mainly comprises the following steps: carrying out pre-dispersion and in-situ hybridization on the white carbon black, the graphene oxide and the one-dimensional nanofibers through a silane coupling agent; constructing a three-dimensional network under a catalytic condition by using a sol-gel method; a stable core-shell structure is formed through a deposition reaction of zirconium sol; finally, the obtained composite slurry is compounded with basic glaze with specific components, rapid densification is achieved through microwave sintering, and the product is particularly suitable for chemical reaction kettle glass lining with strict requirements for corrosion resistance and impact resistance.

The application belongs to the technical field of self-repairing materials, and particularly relates to a kind of double-microcapsule self-repairing water-based polyurethane material and its preparation method. It comprises: ultrasonic dispersion of cellulose nanocrystals in deionized water to form an aqueous phase, adding dry oil and sodium dodecyl sulfate, and stirring to obtain a dry oil microcapsule with a Pickering emulsion as a template. Then, polyvinylpyrrolidone aqueous solution, non-polar solvent solution of thiophene monomer and ammonium persulfate aqueous solution are prepared. The first two are mixed and ultrasonically dispersed, then mixed with the ammonium persulfate aqueous solution and stirred to polymerize. After the reaction is completed, polythiophene microcapsule suspension is obtained. After centrifugation, the supernatant is colorless. The solid is washed and dried to obtain polythiophene microcapsules. Finally, the two kinds of microcapsules are added to the water-based polyurethane, mixed uniformly, dried at room temperature to form a double-microcapsule self-repairing water-based polyurethane material. The application realizes the self-repairing and mechanical property improvement of the double-microcapsule self-repairing water-based polyurethane material under room temperature natural light.

The invention relates to the technical field of adsorption materials, in particular to a high-performance seaweed carbon fiber material based on microsphere phase change and a preparation method of the high-performance seaweed carbon fiber material. The method comprises the following steps: carrying out component separation on a seaweed raw material to construct a core-shell structure microsphere phase change unit which takes calcium alginate microspheres as a shell and seaweed active polysaccharide as a phase change medium, introducing sulfonic cellulose nanocrystals and polyacrylonitrile to be blended to prepare a composite spinning solution, dispersing the microsphere phase change unit into the composite spinning solution, and preparing the composite spinning solution. After electrostatic spinning, catalytic carbonization and water vapor activation, the seaweed carbon fiber material is finally prepared, a sulfonic acid group effectively catalyzes a polyacrylonitrile cyclization reaction in the carbonization process, the compactness of a carbon skeleton is remarkably enhanced, and the sulfonic acid group and a microsphere phase change unit generate a multi-stage synergistic enhancement effect, so that the material has ultrahigh strength and high adsorbability at the same time; the technical problem that the mechanical property and the adsorption property of the biomass carbon fiber are difficult to consider at the same time is solved.

The application discloses a polyester synthesis method and application thereof. The polyester synthesis method comprises the following steps: preparing a sol containing cellulose nanocrystals, and an alcohol solution containing an aluminum alkoxide; adding the alcohol solution into the sol to react; separating a solid phase to obtain a composite catalyst; and synthesizing polyester under the co-catalysis of the composite catalyst and diisopropyl bis(acetylacetonyl) titanate. The polyester synthesized by the method has low carboxyl content, high light transmittance, high mechanical property and hydrolysis resistance, and can be used for preparing a polyester film. The application also provides application of the polyester prepared by the method.

The invention discloses a composite foaming agent, rigid polyurethane foam, a preparation method and application, and belongs to the technical field of rigid polyurethane materials. According to the technical scheme, the foaming agent comprises a first physical foaming agent, a second physical foaming agent, a chemical foaming agent and silanized cellulose nanocrystals, the first physical foaming agent is cyclopentane, the second physical foaming agent is a low-boiling-point foaming agent, and the chemical foaming agent comprises an organic amine salt compound. The foaming agent is applied to thermal insulation materials, and the problem that an existing foaming agent system cannot give consideration to heat conduction and foam strength well is solved.

This invention relates to a high-strength, high-toughness polylactic acid (PLA) composite material and its preparation method, belonging to the field of biodegradable polymer materials technology. The PLA composite material formulation is as follows: by weight, 70-80 parts PLA, 5-10 parts modified cellulose nanocrystals, 3-5 parts modified montmorillonite, 1-2 parts plasticizer, and 0.5-1.5 parts antioxidant. The preparation method of the modified cellulose nanocrystals is as follows: cellulose nanocrystals are added to deionized water and ultrasonically treated to obtain dispersion A; a 0.5-1 M tannic acid solution at 60°C is added sequentially to dispersion A; after cooling to room temperature, a 3 M octadecylamine-ethanol solution is added dropwise; the mixture is washed with ethanol and deionized water, and then subjected to stepwise freeze-drying to obtain the modified cellulose nanocrystals. The PLA composite material prepared by the method of this invention exhibits high strength, high toughness, and good high-temperature resistance.

The invention provides a conversion method of rare ginsenoside Rg5. According to the method, through a vacuum permeation technology, gas in cell gaps of ginseng roots is removed in a vacuum environment, a permeation barrier of cell walls is weakened, a micro-channel is formed, and then a mixed solution of methanol and n-butyl alcohol is injected for primary extraction; after the normal pressure is recovered, the mixed solution can be driven by differential pressure to quickly fill a micro-channel and be better dissolved with the ginseng roots, a more efficient extraction environment is created, extraction is carried out under the low-temperature condition of 30-50 DEG C, thermal degradation of PPD can be effectively avoided, meanwhile, dissolution of impurities such as polysaccharide and protein is reduced, and the adverse effect of the impurities on subsequent conversion is reduced; finally, cellulose nanocrystals and a hydrochloric acid solution are added, on the basis that extraction is further promoted, protopanoxadiol saponin can be efficiently and directionally converted into rare ginsenoside Rg5, meanwhile, generation of an isomeride Rk1 of the rare ginsenoside Rg5 is reduced, and then the yield and purity of the Rg5 are remarkably improved.

The invention provides a deleading agent FT236 and a preparation method and application thereof, the deleading agent FT236 is prepared by taking cellulose nanocrystals CNC as a matrix, diethylenetriamine pentaacetic acid DTPA as a collecting agent, gamma-mercaptopropyltrimethoxysilane MPTMS as a cross-linking agent and chitosan quaternary ammonium salt HTCC as a flocculating agent through the steps of main reaction and post-treatment. The nano structure of the CNC substrate can uniformly load DTPA and MPTMS to provide a stable framework; a collecting agent DTPA is extremely high in chelating capacity for lead ions and is not combined with silver ions, and loss of precious metal is avoided; mPTMS can strengthen the structural stability of the medicament; the HTCC has flocculation activity and can promote agglomeration of the nanoparticles.

The invention discloses a synergistic preparation method and application of carboxylated cellulose nanocrystals and regenerated cellulose, and belongs to the technical field of cellulose nanomaterial preparation. The synergistic preparation method of the carboxylated cellulose nanocrystal and the regenerated cellulose comprises the following steps: carrying out dipping treatment on a cellulose raw material in a Lewis acid solution, then carrying out solid-liquid separation, and collecting a solid-phase component to obtain cellulose slurry; dispersing the cellulose slurry in a polycarboxylic acid solution, reacting, and then filtering and collecting a solid product; treating the solid product by a method I or a method II; the method I comprises the following steps: carrying out separation treatment on the solid product to obtain carboxylated cellulose nanocrystals and regenerated cellulose; and the method II comprises the following steps: washing the solid product, and then carrying out suction filtration to obtain the holocellulose composite membrane.

The invention discloses a microgel material as well as a preparation method and application thereof. The microgel material comprises a polymer and cellulose nanocrystal particles, the cellulose nanocrystal particles coat at least part of the surface of the polymer; the polymer and / or the cellulose nanocrystal particles respectively and independently have metal ion adsorption functional groups and temperature responsiveness. A polymer with functional functional groups is coupled with cellulose nanocrystal particles to construct a microgel material with a core-shell structure, and fine regulation and reversible circulation of adsorption-desorption of metal ions can be realized by utilizing stimulation responsiveness of the functional groups on the surface of the core-shell structure to adsorption and desorption of the metal ions; moreover, the cellulose nanocrystal particles are excellent in dispersity, aggregation and sedimentation of the microgel material in a solution can be avoided, the ion adsorption and desorption functions of the microgel material can be regulated and controlled through the change of the environment temperature, and metal ions in the solution are recycled.

This invention discloses a lightweight sound-absorbing building material, its preparation method, and its application in ceiling components, relating to the field of lightweight building materials technology. The lightweight sound-absorbing building material of this invention consists of a porous plate and a glaze layer on the surface of the porous plate. The glaze layer is formed by spraying glaze onto the surface of the porous plate; the porous plate is formed by sintering a plate-forming composition; the plate-forming composition includes the following raw materials: waste foamed ceramic powder, diatomaceous earth, hollow glass microspheres, cellulose nanocrystals, bilayer fibers, a foaming agent, and an ethanol solution of polyethyleneimine. The core-shell structure bilayer fibers introduced in this invention, with a mesoporous barium titanate-silica composite phase as the core and an MXene-graphene composite phase as the shell, effectively improve the material's sound absorption and noise reduction capabilities; the introduction of hollow glass microspheres and cellulose nanocrystals further enhances the material's lightweight properties, flexural strength, and sound absorption and noise reduction capabilities. Therefore, this invention has broader application prospects.

The invention discloses application of a rice cell wall CytoUGE gene in preparation of self-assembled large-size cellulose nanocrystals, and belongs to the field of plant genetic engineering and nano materials. The nucleotide sequence of the rice cell wall CytoUGE gene is as shown in SEQ ID NO. 3. Research finds that the rice cell wall CytoUGE gene can regulate and control plant cell wall polysaccharide metabolism key enzyme through heredity, direct regulation and control of the size and the crystallinity of the cellulose nanocrystal are achieved, and the cellulose nanocrystal obtained through rice stems over-expressing the rice cell wall CytoUGE gene is large in size and high in crystallinity; and a better reinforcing effect is achieved in the nano composite material. The invention provides a new technical approach and gene resources for high-valued utilization of plant biomass, and has dual application values and wide application prospects in variety breeding and functional material development.

The application discloses a preparation method of a self-emulsifying type wet spinning raw silk oil agent and a preparation method of high-uniformity carbon fibers, and belongs to the technical field of carbon fibers. In the application, polyglycerol and epsilon-caprolactone are catalytically prepared into PG-PCL; then the PG-PCL is reacted with acrylate to obtain acrylated PG-PCL; finally, the PG-PCL, the acrylated PG-PCL and perfluoropolyether acrylate are uniformly dissolved in acetone; then carboxylated cellulose nanocrystals and iron phthalocyanine are added and high-speed shearing emulsification is carried out, and water is gradually added to form a nanoemulsion; and the high-uniformity carbon fibers are obtained by combining a low-temperature preparation method of the carbon fibers. The method synchronously solves the problems of emulsion stability, fiber uniformity and carbonization compatibility, shortens a production cycle, is suitable for high-end fields such as aerospace and new energy vehicles, and has the advantages of high performance and green manufacturing.

This application provides a method for preparing environmentally friendly clothing fasteners made from marine recycled PET, relating to the field of environmentally friendly clothing accessory manufacturing technology. The use of marine recycled PET material in this application reduces the demand for virgin plastics and decreases the consumption of non-renewable resources such as petroleum; it effectively reduces plastic pollution in the ocean and protects the marine ecological environment; compared to virgin PET materials, it saves energy and reduces carbon footprint; marine recycled PET fasteners are derived from the same source as polyester clothing fabrics, enabling "material homogeneous recycling" of clothing; furthermore, the cellulose nanocrystals (CNC) in the reinforcing phase composite are derived from renewable resources and are biodegradable, further enhancing the green sustainability of the environmentally friendly fasteners; the graphene-cellulose nanocrystal CNC composite is compounded and combined in a silane coupling agent ethanol solution to form an interpenetrating network structure, thereby synergistically improving the strength, rigidity, toughness, and heat resistance of marine recycled PET, and increasing tensile strength.

The invention discloses a weather-resistant polysiloxane silicone rubber glass decorative protective coating and a preparation method thereof, and relates to the technical field of protective coatings. The modified cellulose nanocrystal epoxy polysiloxane coating is prepared from the following raw materials in parts by mass: 83 to 100 parts of epoxy polysiloxane solution, 1.8 to 2.2 parts of cerium 2-ethylhexanoate, 8 to 9.5 parts of AG-80 epoxy resin, 36 to 43 parts of curing agent and 2 to 4 parts of modified cellulose nanocrystal, wherein the modified cellulose nanocrystal is prepared from a cellulose nanocrystal, heptadecafluorodecyl trimethoxysilane and MXene quantum dots. The hard and compact coating formed by mixing the components such as the epoxy polysiloxane solution, the AG-80 epoxy resin and the curing agent effectively improves the hardness and the salt spray resistance; by introducing the modified cellulose nanocrystals and cerium 2-ethylhexanoate, the adhesive force, the protective property and the weather resistance are further improved. Therefore, the method has a wider application prospect.

A powder metallurgy transmission plate material for a clutch, comprising in percentage by mass: 55%-65% of high-purity atomized iron powder, 8%-12% of electrolytic copper powder, 4%-8% of nickel hydroxide powder, 1.5%-4% of ferromolybdenum powder, 1%-3% of chromium powder, 0.3%-1.5% of lanthanum powder, 1.5%-3.5% of nano silicon carbide particles, 0.8%-2% of carbon fiber, 0.5%-1.5% of whisker-like alumina, 0.3%-1% of cellulose nanocrystals, 0.5%-2% of rare earth oxides, 2.3%-6% of a lubricating agent and 0.5%-1.8% of a binder. A transmission plate prepared by using the material component ensures the reliability and durability of the transmission plate in a complex mechanical environment, prolongs the service life of the transmission plate, and reduces safety risks. Also comprised is a preparation method for a powder metallurgy transmission plate material for a clutch.

The application discloses a production process of waterproof and moisture-permeable multi-layer PU synthetic leather and belongs to the technical field of synthetic leather production. The structure comprises a bottom layer, a self-repairing intermediate layer and a surface layer from bottom to top. The preparation method comprises the following steps: firstly, performing surface modification on non-woven fabric, then coating water-based PU resin and entering a coagulation bath; secondly, synthesizing self-repairing water-based PU containing furan / maleimide, coating and hot-pressing to form an intermediate layer; finally, blending temperature-changing substances, cellulose nanocrystals and modified nano-enhancing agents to prepare a surface slurry, coating and hot-pressing, and then performing aging, washing and post-finishing to obtain a finished product. Through the synergistic design of multiple functions, the application constructs gradient moisture-permeable channels, a dynamic self-repairing network and a temperature and moisture sensitive response surface layer, solves the problems that existing synthetic leather is prone to peeling between layers, the performance is irreversibly attenuated after damage and cannot dynamically adapt to temperature and humidity changes, and the product has excellent waterproof and moisture-permeable, self-repairing and intelligent response performance and is suitable for outdoor shoes and clothes, protective equipment and other fields.

The invention provides an environment-friendly polymer antioxidant additive and a preparation method thereof, and belongs to the technical field of antioxidants, the environment-friendly polymer antioxidant additive comprises the following components by weight: 100 parts of a polyolefin polymer and 0.1-10 parts of an antioxidant additive; the antioxidant additive comprises a layered double metal hydroxide and a modified antioxidant; the modified antioxidant is loaded on the surface of the layered double-metal hydroxide, and cellulose nanocrystals and the antioxidant are bridged and covalently connected through isophorone diisocyanate. The antioxidant and the cellulose nanocrystal are covalently connected through the isophorone diisocyanate, and are further loaded on the layered double-metal hydroxide, so that the migration problem of the antioxidant is solved, and the stability of the antioxidant in a polyolefin matrix is improved by compounding the antioxidant with the cellulose nanocrystal; therefore, the long-lasting anti-oxidation protection is provided for the polyolefin material.

The invention discloses a preparation method and application of a double-layer composite film with circularly polarized light (CPL) characteristics, and belongs to the technical field of optical materials. According to the invention, a double-layer composite film for finely dividing an optical functional area is designed, a micron-sized fluorescent material is deposited on the bottom layer of the film and is only used for photoluminescence, and cellulose nanocrystals (CNC) are compounded above the fluorescent layer and are only used as an optical filter for selectively transmitting right-handed circularly polarized fluorescence; by controlling the volume of the CNC solution, a thin film with a high asymmetry factor (Glum) and an adjustable Glum factor is obtained. The preparation method breaks through the size limitation that only nanoscale fluorescent powder can be blended with CNC (computer numerical control) to obtain circularly polarized light fluorescent powder in the prior art, greatly expands the selection range of optical inactive materials for obtaining circularly polarized light, is simple and convenient to prepare and operate, is green and environment-friendly, is beneficial to actual production, and is expected to promote the progress of optical anti-counterfeiting.

The present disclosure provides for a method of making a plant growth medium comprising isolating cellulose nanocrystals from a feedstock, and adding the cellulose nanocrystals to the plant growth medium. Further provided herein is a plant starter plug comprising the plant growth medium. Also provided herein is a plant growth medium comprising germination material and cellulose nanocrystals, and a plant starter plug comprising thereof. The present disclosure further provides for a method of isolating CNCs from waste.

This invention relates to high-energy-density phase change composite materials, their preparation methods, and applications, belonging to the field of phase change composite material technology. To address the problems of low energy density, insufficient mechanical properties, and poor processability of current phase change materials, this invention provides a high-energy-density phase change composite material, specifically a lightweight porous cellulose phase change composite aerogel. Internally, it consists of a three-dimensional network framework formed by the cross-linking of vinyl-functionalized cellulose nanocrystals and cellulose nanofibers. The phase change material is uniformly loaded within the pores of this three-dimensional network, with a loading amount of 65.53~91.02 wt%. The phase change temperature range of the composite material is 20~80℃. This invention's phase change composite material, relying on a hierarchical confinement structure, achieves efficient encapsulation and high loading of the phase change material, with a phase change enthalpy as high as 133.2 J / g. It also possesses excellent mechanical and thermal cycling stability and 3D printing performance, making it suitable for scenarios with wide temperature fluctuations and applicable to the field of intelligent thermal management.

This invention relates to the field of shape memory material preparation technology, specifically to a bio-based shape memory Eucommia ulmoides gum composite material and its preparation method. All components of the composite material are of entirely bio-based origin, using natural Eucommia ulmoides gum as the matrix. Nano-hybrid seed crystals composed of cellulose nanocrystals and carbon quantum dots are introduced. The cellulose nanocrystals act as nucleating agents, guiding and accelerating the cooling crystallization of the Eucommia ulmoides gum, while the carbon quantum dots form the shell, improving heat transfer efficiency. In the preparation process, this application uses triacylglycerol lipase as a biocatalyst, which can initiate an in-situ esterification reaction between the filler and the matrix at a low temperature of 65-75℃. This not only reduces energy consumption but also avoids the thermal degradation and damage to the Eucommia ulmoides gum macromolecular chains caused by high-temperature strong shear, achieving high performance and batch-to-batch stability of the material.

The invention discloses a closed-loop recovery method of a cellulose nanocrystal composite film, which comprises the following steps of: mixing cellulose nanocrystals and sodium lipoate in an aqueous solution, and inhibiting bunchy aggregation of the cellulose nanocrystals in a film forming process through electrostatic repulsion and steric hindrance effect of the sodium lipoate to form a uniform single horizontal stacked structure; and drying to obtain the composite film with adjustable optical transparency and mechanical properties. Immersing the composite film into water, and carrying out dynamic covalent ring-opening depolymerization and complete dissolution on the sodium lipoate component; and carrying out ultrasonic treatment on the residual cellulose nanocrystal skeleton, centrifuging, and taking supernate to obtain redispersed single nanocrystals. According to the method, performance regulation and control and full-closed-loop recovery of the composite film are achieved through a water-phase processing strategy, the process is simple and convenient, energy consumption is low, and a feasible path is provided for green manufacturing and cyclic utilization of the nanocellulose material.

The application discloses a kind of based on super double-surface spraying auxiliary cellulose photonic pigment and preparation method, belong to the technical field of photonic functional materials.For the angle dependence strong, long period, process complex and other problems existing in the preparation of existing cellulose nanocrystal (CNC) photonic pigment, the application uses commercial CNC water suspension as raw material, by regulating NaCl addition ratio and ultrasonic time pretreatment to obtain anisotropic phase CNC dispersion liquid;Adopting candle smoke template method combined with chemical vapor deposition and fluorosilane modification to prepare super double-surface;CNC dispersion liquid is sprayed on the surface to form microdroplets, dried in a controllable humidity environment of 38%~100%, CNC is driven to form radial orientation cholesteric phase structure by means of gas-liquid interfacial tension, and finally obtain angle-independent photonic pigment.The application can prepare spherical pigment covering blue (450nm), green (550nm), red (650nm) full visible spectrum, the preparation period is shortened to 2h or less, no additional post-treatment is needed, and super double-surface substrate can be reused for more than 30 times.

A process and system for removal of antibiotic compounds from a patient's body can include having a patient digest an antibiotic removal agent or an antibiotic deactivation agent. The agent can include anionic hairy cellulose nanocrystals (AHCNC) hybridized with a resin, such as cholestyramine (CHA). The agent can pass through the patient's digestive system to remove antibiotic compounds that may reside therein as a consequence of an antibacterial treatment provided to the patient. Removal of the antibiotic compounds from the patient's digestive system can avoid evolution of antimicrobial resistance.

This invention relates to the field of adsorption materials technology, specifically to a high-performance seaweed carbon fiber material based on microsphere phase change and its preparation method. The method involves separating the components of seaweed raw materials to construct a "core-shell" structured microsphere phase change unit with calcium alginate microspheres as the shell and seaweed active polysaccharides as the phase change medium. A composite spinning solution is prepared by blending sulfonic acid-based cellulose nanocrystals with polyacrylonitrile, dispersing the microsphere phase change unit within it. After electrospinning, catalytic carbonization, and steam activation, the seaweed carbon fiber material is finally obtained. The sulfonic acid groups effectively catalyze the cyclization reaction of polyacrylonitrile during carbonization, significantly enhancing the density of the carbon skeleton and producing a multi-level synergistic enhancement effect with the microsphere phase change unit. This results in a material that simultaneously possesses ultra-high strength and high adsorption capacity, solving the technical challenge of simultaneously achieving both mechanical and adsorption properties in biomass carbon fibers.

The application belongs to the field of material preparation, and particularly relates to a method for in-situ synthesis of microcapsules by enzyme catalysis and application thereof in anticorrosive coatings. The method specifically comprises the following steps: firstly, preparing a cellulose nanocrystal dispersion liquid and an emulsion of flaxseed oil containing cembrene; ultrasonic dispersing the emulsion, and then performing magnetic stirring to obtain a Pickering emulsion; adding hydrogen peroxide and horseradish peroxidase solution into the Pickering emulsion, and stirring and reacting; and performing freeze-drying on the emulsion after the reaction is completed to obtain cellulose nanocrystal microcapsules. The application uses an enzyme catalysis method to prepare microcapsules with an anticorrosive function, and the synthesized microcapsules do not contain harmful substances such as formaldehyde and are environmentally friendly. The synthesized microcapsules have good stability, can be easily dispersed in an aqueous solution, can be used as a carrier of healing reagents for water-based anticorrosive coatings, and have a simple preparation method, controllable size and suitability for large-scale production.

The application discloses a super-strong bonding water-based adhesive and a preparation method thereof, and relates to the technical field of adhesives. In a dispersion system of aluminum gel, cellulose nanocrystals and surface-carboxylated amorphous calcium carbonate, chemical bonding and uniform dispersion of nano-filler and a polymer matrix are realized through in-situ polymerization of polyurethane monomers, so that excellent bonding strength and water resistance are realized. Aluminum ions and carboxymethyl cellulose sodium form an ionic gel structure, the mechanical embedding of the adhesive and the base material is enhanced, amorphous calcium carbonate is wrapped with acrylic acid polymerization, so that the nanoparticles are stabilized, calcium carbonate is diffused into the polyurethane matrix to realize the organic-inorganic hybrid reinforcing structure of the adhesive, and the polyurethane monomers are in-situ polymerized in the presence of nano-filler, so that the crystal form of calcium carbonate and the mechanical properties of the adhesive are stabilized, and the overall structural integrity of the matrix is enhanced.