37results about How to "Non-toxic" patented technology

The invention provides a carbonized polymer dot with high-temperature-resistant surface activity and solid-state luminescence as well as a preparation method and application of the carbonized polymer dot. The preparation method of the carbonized polymer point with high-temperature-resistant surface activity and solid luminescence comprises the following steps: uniformly mixing a precursor, a polyether long-chain polymer, acid and water, carrying out hydrothermal reaction, and then purifying and freeze-drying to obtain the carbonized polymer point with high-temperature-resistant surface activity and solid luminescence, the precursor is rhodamine B, methyl blue, fluorescein sodium or calcein. The preparation method disclosed by the invention is simple, environment-friendly, cheap and easily available in raw materials, low in cost and high in yield; reaction conditions are easy to realize; the carbonized polymer dot prepared by the invention has both high-temperature-resistant surface activity and solid-state luminescence property, can emit high-brightness red light, has higher solid quantum yield and good biocompatibility, has the capability of serving as commercial fluorescent powder and a surfactant, and has extremely high practical application value in the fields of solid-state illumination, petroleum industry and the like.

The invention relates to the field of composite materials, and particularly discloses a bamboo fiber composite material plate as well as a formula and a production process thereof. The bamboo fiber composite material plate comprises a surface layer, a core layer and a bottom layer which are compounded from top to bottom, the surface layer and the bottom layer are respectively formed by pressing mixed slurry of magnesium oxide, magnesium sulfate and bamboo powder, the core layer is formed by pressing mixed slurry of magnesium oxide, magnesium sulfate, bamboo fiber and bamboo powder, glass fiber cloth is laid in the core layer, and the surface layer, the core layer and the bottom layer are integrally formed by pressing. The three-layer structure is arranged, the bamboo powder is added into the surface layer and the bottom layer to be mixed and pressed, gaps are filled, the surface layer and the bottom layer of the plate have high density, and after the bamboo powder is added, the wear resistance is excellent; the bamboo fibers and the bamboo powder are added into the middle core layer, the fracture resistance of the board is greatly improved through the added bamboo fibers, the overall structure becomes more compact through the bamboo fibers mixed in the slurry, the bamboo fibers have the effect of embedded reinforcing ribs, and the load bearing strength and the fracture resistance of the board are greatly improved.

The invention provides high-internal-phase emulsion gel with microcapsules compounded with coffee essential oil and a preparation method of the high-internal-phase emulsion gel, and belongs to the field of plant essential oil processing. The high internal phase emulsion gel comprises a water phase and an oil phase, and the oil phase accounts for 72-90% of the total volume of the system; the water phase is a microcapsule and is prepared by mixing a core material, a wall material and an emulsifier in water and then performing ultrasonic treatment; the oil phase is coffee essential oil and is prepared by dissolving a coffee raw material in an organic solvent, extracting, filtering and carrying out rotary evaporation. According to the invention, a novel high internal phase emulsion delivery system is developed by combining microcapsules and a high internal phase emulsion technology, so that the efficacy, the bioavailability and the stability of the coffee essential oil are improved, and the preparation method is a key and a premise for further application of the coffee essential oil.

The present application relates to green flower vegetable fresh-keeping paper and preparation method and application, including paper-like carrier, and further including powder-like Pickering emulsion freeze-dried sprayed on the carrier, components of the Pickering emulsion freeze-dried include 1-MCP, mustard essential oil, emulsifier and stabilizer.The green flower vegetable fresh-keeping paper has the effects of antibacterial, green protection, insecticidal and antioxidant on green flower vegetable, can realize long-acting fresh-keeping of green flower vegetable during storage, is suitable for large-scale popularization and application, is convenient for packaging and storage of large quantities of postharvest green flower vegetable, and raw materials are widely sourced, low in price, suitable for large-scale production and use, and the related raw materials are non-toxic and harmless to human body and environment, safe and reliable.

This invention discloses a method for preparing a thermally conductive and insulating coating, comprising the following steps: taking a base resin, adding an active diluent, reducing the viscosity of the base resin and mixing it evenly under heating and stirring conditions, and then stopping the heating; sequentially adding modified hexagonal boron nitride nanosheets and nano-Al 2 O 3 The thermally conductive and insulating coating is prepared by dispersing coupling agent, leveling agent, initiator, stabilizer, curing agent, and defoamer for several hours. The modified hexagonal boron nitride nanosheets are hexagonal boron nitride nanosheets modified with amino acids. The thermally conductive and insulating coating prepared by the method provided by this invention has good thermal conductivity and good insulation properties on circuit boards, exceeding 25kV / mm. The entire production process is pollution-free, non-toxic, and more environmentally friendly, and the entire process is relatively simple.

The invention discloses a preparation method of drug delivery nanoparticles based on hydrogel microneedles, and relates to the technical field of biological medicine, the technical key points are as follows: step S1, preparing a white suspension solution; step S2, preparing a white powdery porous hollow nano microsphere A; step S3, preparing A nano microsphere powder loaded with TP; step S4, preparing a CaCO3 (at) Lip (at) DEC205 nano microsphere preparation; and S5, preparing the PVP microneedle: dropwise adding a proper amount of polyvinylpyrrolidone solution into the mold, keeping the weights of the two six-hole culture plates equal, centrifuging, putting the obtained culture plates into a drying oven, evaporating the solution to dryness, and taking down the prepared microneedle from the mold. The liposome is added, so that the TP drug loading efficiency is higher, and the toxic and side effects of the whole body are reduced.

The application provides a heterocyclic quaternary acid and a preparation method and application thereof. The heterocyclic quaternary acid has a structure shown in formula I, wherein Y is selected from a substituted or unsubstituted heterocyclic group, R1 and R2 are independently selected from a linear or branched alkyl group with 1-6 carbon atoms or a substituted or unsubstituted aromatic ring. 10 The heterocyclic quaternary acid has the advantages of good biological compatibility and low toxicity due to the presence of an amide bond, and is suitable for synthesizing a low-toxicity plasticizer.

The application belongs to the field of pharmaceutical chemical industry, and particularly relates to a liquid-phase preparation method of a side chain of somatuline. The preparation method of the application is that Fmoc-His(Trt)-OH reacts with H-Aib-OtBu under the action of a condensing agent T3P to obtain Fmoc-His-Aib-OH. The preparation method provided by the application simplifies operation steps, can control monomer impurities below 0.05%, can control inferior isomer impurities below 0.01%, is short in a synthesis period, is low in cost, has few by-products, and is suitable for industrial production.

The invention belongs to the field of preparation of inorganic flame-retardant materials, and particularly relates to a preparation method and application of nitrogen-phosphorus-silicon co-doped flame-retardant fluorescent carbon quantum dots. The nitrogen-silicon co-doped carbon quantum dots are prepared by adding a carbon source compound, a nitrogen source compound and a silanization reagent in the hydrothermal synthesis process, meanwhile, the surfaces of the carbon quantum dots contain rich amino groups, one hydrogen atom in the amino groups is substituted by a phosphorus source compound spiro phosphate diacyl chloride, and the nitrogen-silicon co-doped carbon quantum dots are obtained. According to the nitrogen-phosphorus-silicon co-doped carbon quantum dot, nitrogen, phosphorus and silicon elements can improve the fluorescence yield and the flame retardant property of the carbon quantum dot. Moreover, the nitrogen-phosphorus-silicon co-doped flame-retardant fluorescent carbon quantum dot prepared by the method has a spiral ring structure on the surface, is sprayed on the surface of a fabric in a post-finishing form, is subjected to ring-opening crosslinking under the action of a photoinitiator and UV light, and can be effectively combined with a fiber base material, so that the problem of falling in the subsequent washing and using processes is solved.

The invention provides a gallium-based propane dehydrogenation catalyst as well as a preparation method and application thereof, and relates to the field of petrochemical engineering catalysis. The catalyst comprises the following components in percentage by mass: 3-20% of gallium element, 1-10% of additive element and the balance of carrier element, wherein the carrier is zinc aluminate. The preparation method comprises the following steps: S1, preparing a zinc aluminate carrier, putting the zinc aluminate carrier in a negative pressure environment, and standing for 30-60 minutes; s2, uniformly mixing the gallium-containing solution and the assistant-containing solution to obtain an impregnation liquid; and S3, sucking the impregnation liquid into the surface of the zinc aluminate carrier under negative pressure, aging and drying, and roasting in a muffle furnace. The catalyst has relatively high propane dehydrogenation reaction performance and long-time stability, and has relatively high propylene selectivity and good stability when being applied to a propane dehydrogenation reaction process.

This invention discloses a subcritical extraction method for Moringa leaf extract, a method for increasing intestinal butyric acid abundance, and its application. The Moringa leaf extract prepared by subcritical extraction has the advantages of being non-toxic, pollution-free, and easy to separate from the product. It was then applied to the intervention of type 2 diabetic rats. When the gavage dose was ≥150 mg / kg∙d, the abundance of intestinal butyric acid-producing bacteria and butyric acid was significantly increased, which is of great significance for the treatment of diabetes, obesity, and enteritis metabolic diseases.

This invention belongs to the field of probiotic screening and application technology, specifically relating to a strain of *Lactobacillus paracasei* and its application in the prevention and treatment of colonic polyps and colon cancer. The *Lactobacillus paracasei*, named *Lactobacillus paracasei* V85, was deposited on January 15, 2026, at the China Center for Type Culture Collection (CCTCC), Wuhan University, China, with accession number CCTCC NO: M2026124. The *Lactobacillus paracasei* V85 provided by this invention is sensitive to common antibiotics and has good biosafety; it possesses strong antioxidant function and a strong inhibitory effect on hemolytic streptococci; it can produce a strong agglutination effect with hemolytic streptococci, which is beneficial for inhibiting the colonization of hemolytic streptococci in the intestine, reducing the risk of colonic polyps and colon cancer caused by hemolytic streptococci, and can promote the proliferation of *Akkermansia myxophilus*. It can be used to prevent and treat colonic polyps and colon cancer caused by hemolytic streptococci, and has broad application prospects.

The present invention relates to a biological polysaccharide hydrogel, a preparation method therefor and an application thereof. The biological polysaccharide hydrogel of the present invention is formed by means of the mixing and reaction of two solutions; the first solution is a polysaccharide derivative solution having an aldehyde on a side chain; the second solution is a polysaccharide derivative solution having a primary amine on a main chain or a side chain, or a small molecule compound solution having two or more primary amines. The preparation method of the present invention comprises preparing the first solution and the second solution, and then mixing the first solution and the second solution to form a transparent biological polysaccharide hydrogel. The biological polysaccharide hydrogel of the present invention can be applied as a vitreous substitute.

The invention provides a preparation method and application of a citric acid modified Cd-MOF material, and belongs to the technical field of metal organic framework materials. The citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) is synthesized by adopting a chemical grafting and steam diffusion method, and the adsorption performance and the reusability of the citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) are systematically researched. Parameters such as concentration, dosage, pH and the like of citric acid are associated, the adsorption effect of the citric acid on heavy elements in a portable solution is investigated, and the adsorption capacities of the citric acid on anionic dye Congo red (CR) and heavy metal ions (Cu < 2 + >) are as high as 900.9 and 287.4 mg.g <-1 > respectively. The citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) obtained by the invention has the characteristics of being simple, green, environment-friendly and reusable, has excellent adsorption performance, and can be used for simultaneously removing organic dye and heavy metal ion pollution in water.

The invention discloses a method for improving seed germination under a salt stress condition and application thereof, and belongs to the technical field of crop production. According to the method provided by the invention, the germination ability of the seeds under the salt stress condition can be remarkably improved, the germination rate, germination potential and germination index of the watermelon seeds and the muskmelon seeds under the salt stress condition simulated by 250mM NaCl can be remarkably improved by soaking the seeds with 10 mu M methyl caffeate, and the germination of the watermelon seeds and the muskmelon seeds under the normal condition is not influenced; seedlings generated by the seeds treated by the method provided by the invention grow robustly, and compared with seedlings grown under normal conditions, obvious abnormity is not observed, so that the method provided by the invention is safe and has no toxic effect on plant growth; the provided method is simple, effective and low in cost, and can be used for improving the seed germination capacity under the salt stress condition so as to improve the utilization capacity of the saline-alkali soil and improve the crop yield and quality contribution of the saline-alkali soil.

The invention relates to the technical field related to refrigeration equipment, and provides a fresh-keeping and nourishing device, a fresh-keeping and nourishing control method and a refrigeration device. The fresh-keeping and nourishing device comprises a main body, a first movable part and a light source mechanism. The main body is provided with a first area, and the first area is provided with a first opening; the first movable part is movably connected to the main body, and a first concave cavity is provided on the first movable part; the light source mechanism is arranged in the first area of ​​the main body, and the light source mechanism is used for fresh-keeping and nourishing fruits and vegetables. The light source mechanism comprises a first lamp group that can emit red light, a second lamp group that can emit blue light and a third lamp group that can emit ultraviolet light; wherein the first lamp group, the second lamp group and the third lamp group can operate independently or at least two of them can cooperate with each other to achieve the best fresh-keeping and nourishing effect of fruits and vegetables, and the operation is simple, the cost is low, the toxicity is non-toxic, the residue is free and the environment is friendly, and the nutrients of fruits and vegetables are improved, and the fresh-keeping and nourishing effect is good.

The invention provides an allograft colloid kit and a use method thereof, the allograft colloid kit comprises a colloid material and a colloidal solution, the colloid material comprises sodium alginate, gelatin and HEPES, and the colloidal solution comprises divalent cation salts; after the colloid material, the colloid solution and the cells are mixed, the allograft colloid is obtained, and the cell culture colloid can be applied to establishment of animal experiment models. The components of the allograft colloidal material are synthetic raw materials, are pure and have no biotoxicity. The hardness of the culture colloid formed by the allograft colloid set is different according to different material proportions, and the applicable cell strain breadth is high; and the method can be operated at room temperature, and the operation steps are simple. When the allograft colloid is used for cell allograft, allogeneic cells can well grow in experimental animal bodies, and no culture colloid is left.

The application discloses a kind of based on underwater structure settlement nondestructive intelligent monitoring optical fiber layout method, comprising the following steps: optical fiber layout is carried out on dry canal bottom surface and slope surface;Adopt negative pressure suction disc assembly and fix optical fiber on canal bottom concrete slab;When disassembling, pressurized grouting is added through communicating pipe, and biological-based adhesive strip is expanded, the negative pressure adsorption state is destroyed, and the negative pressure suction disc assembly is removed.The application can obtain canal bottom settlement data in real time before, during and in the operation period of crossing engineering construction by laying optical fiber on dry canal bottom surface and slope surface and fixing optical fiber on concrete slab by negative pressure suction disc assembly, provides direct basis for judging the influence of crossing engineering on dry canal deformation, and does not need to punch or anchor in concrete bottom plate, completely avoids damage to canal bottom structure, and will not cause any pollution to dry canal water, meets the high protection level requirement of South-to-North Water Diversion Project.

The utility model provides a wear-resistant and high-elastic bio-based nylon single-component fabric. The bio-based nylon single-component fabric comprises a bio-based fabric layer and a fluoride-free bio-based waterproof functional layer arranged on at least one surface of the bio-based fabric layer, the bio-based fabric layer is formed by interweaving warp yarns and weft yarns, the warp yarns and the weft yarns are 20D-40D nylon 510 yarns, and the warp yarns and the weft yarns are double-twisted mechanically stretched yarns. The bio-based nylon single-component fabric mainly comprises a nylon single component, is convenient to recycle and has the high wear-resistant property of nylon 510. The fluoride-free bio-based waterproof functional layer on the bio-based fabric layer can endow the fabric with waterproof performance, and also has the advantages of being non-toxic, easy to degrade, environment-friendly and the like.

The shoulder tension spring for the medicine bottle production line is good in heat insulation effect and comprises a tension spring body, the tension spring body comprises a base layer, a first functional layer and a second functional layer, the first functional layer comprises a silicide fiber layer and an expanded perlite fiber layer, and the second functional layer comprises a silicide fiber layer and an expanded perlite fiber layer. The second functional layer comprises a high-density polyethylene layer and a bi-component polyurethane coating, the first functional layer is arranged on the outer surface of the base layer, and the second functional layer is arranged on the outer surface of the first functional layer. The first functional layer comprising the silicide fiber layer and the expanded perlite fiber layer is arranged, the silicide fiber layer has the characteristics of high and low temperature resistance, heat preservation and insulation, excellent corrosion resistance and certain hardness, and the expanded perlite fiber layer has the characteristics of heat preservation, heat insulation, noninflammability, no toxicity, good chemical stability and the like. The heat insulation effect of the tension spring body can be effectively improved, and the service life is prolonged.

The application discloses a kind of preparation auricularia auricular polysaccharide / casein emulsion gel and its preparation method and application.The preparation method of the application includes the following steps: 1) auricularia auricular polysaccharide aqueous solution is mixed with casein aqueous solution, to obtain protein-polysaccharide complex solution;2) water phase is mixed into oil phase, the water phase is the protein-polysaccharide complex solution, and the obtained mixture is ultrasonically homogenized, to obtain emulsion;3) gluconic acid-delta-lactone is added to the emulsion and mixed, incubated, to obtain auricularia auricular polysaccharide / casein emulsion gel.The auricularia auricular polysaccharide / casein emulsion gel disclosed in the application is applied to curcumin encapsulation.After adding auricularia auricular polysaccharide, the gel performance of casein emulsion gel is significantly improved;After adding auricularia auricular polysaccharide, the loading rate of curcumin loaded in casein emulsion gel is significantly increased.

This invention discloses an antimicrobial 10-peptide, characterized by the sequence: w-k-r-w-r-r-w-w-r-r(dTrp-dLys-dArg-dTrp-dArg-dArg-dTrp-dTrp-dArg-dArg), where all amino acids are D-type amino acids. The antimicrobial peptide provided by this invention exhibits good antimicrobial activity against a variety of pathogenic bacteria. This antimicrobial peptide can be synthesized using the Fmoc solid-phase chemical method, which is easy to synthesize and exhibits good in vivo antimicrobial activity. This antimicrobial peptide exhibits broad-spectrum killing activity against multidrug-resistant Acinetobacter baumannii, carbapenem-resistant Pseudomonas aeruginosa, as well as standard strains of Acinetobacter baumannii, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Enterobacter cloacae, methicillin-resistant Staphylococcus aureus, and Staphylococcus aureus. It has low hemolytic toxicity, and at low to medium concentrations (2 μg / mL to 32 μg / mL), the cell survival rate can reach more than 50%. It has no toxic effect on cells, good stability, strong operability, and low cost.

The present invention relates to the field of plant planting, and in particular to a method for reducing the incidence of pre-harvest browning disease of nai plum, which is specifically spraying a gamma-aminobutyric acid aqueous solution on nai plum trees during the growth and development of nai plum fruits. The present invention can significantly reduce the incidence of pre-harvest browning disease of nai plum fruits by spraying a gamma-aminobutyric acid aqueous solution on nai plum trees during the growth and development of nai plum fruits, and reduce the losses of fruit farmers caused by the occurrence of browning disease. The method can achieve the prevention and control effect only by foliar spraying, is simple to operate, uses a small amount, and is quick to take effect.

The invention discloses a method for preparing a radiation cross-linked low-smoke flame-retardant polyolefin cable material, which belongs to the technical field of cable materials. The invention comprises the following raw materials by weight: 60-80 parts of high-density polyethylene, 20-30 parts of ethylene-vinyl acetate copolymer, 10-20 parts of modified hydrotalcite, 5-15 parts of flame retardant, 4-8 parts of cross-linking sensitizer, and 2-4 parts of lubricant. The modified magnesium-aluminum hydrotalcite has good compatibility with the matrix, promotes the dispersion of hydrotalcite in the matrix, enhances the flame retardant efficiency, and improves the flame retardant and smoke suppression performance of the cable material; the various groups in the flame retardant molecule play a synergistic role, greatly enhancing the flame retardant and smoke suppression, oxidation resistance and a certain degree of mechanical properties of the cable material, and the performance is long-term and stable; therefore, the cable material prepared by the invention has stable and efficient flame retardant and smoke suppression, oxidation resistance, high mechanical strength, excellent comprehensive performance, and has important application value in the field of cable material technology.

The application discloses a kind of fluorine-containing amphiphilic block polymers, its preparation method and application, a kind of fluorine-containing amphiphilic block polymer structure is: Wherein, R1It is hydrophilic group, R2It is fluorine-containing hydrophobic group, n, m are polymerization degree.The fluorine-containing amphiphilic block polymer of the application is synthesized by controllable polymerization method from hydrophilic material polyethylene glycol and hydrophobic material fluorine-containing acrylate, can freely change the proportion of hydrophilic material and hydrophobic material, maximum limit load hydrophobic material perfluoro crown ether;The fluorine-containing amphiphilic block polymer of the application synthesis process is simple, can be self-assembled into spherical particles in aqueous solution, can stably exist in blood, reach tumor area by infrared light illumination to produce reactive oxygen, under the condition of not being illuminated, cell has no toxic effect.

The invention provides compound coffee essential oil high internal phase emulsion gel, and belongs to the field of plant essential oil processing. The gel comprises a water phase and an oil phase, the water phase is a microcapsule, and the oil phase is lipidosome containing coffee essential oil; the oil phase accounts for 72-90% of the total volume of the system; the microcapsule is prepared by mixing a core material, a wall material and an emulsifier in water and then carrying out ultrasonic treatment, the preparation method of the lipidosome comprises the following steps: dissolving coffee essential oil, soybean lecithin and cholesterol in a solvent, performing rotary evaporation to obtain a film, adding the film into a buffer solution, and finally performing ultrasonic hydration to obtain the lipidosome. The invention establishes a steady-state method of the coffee essential oil, so that the coffee essential oil has certain quality and price advantages compared with products in the current market.

This invention belongs to the field of photo-evaporation desalination of water, specifically relating to a composite photoevaporator for photo-evaporation desalination and its preparation method. Carbon nanotubes, which possess excellent light absorption and water transport capabilities, are dispersed in biomass materials. Simultaneously, a layer of copper acetate is sprayed onto the surface of the biomass materials containing carbon nanotubes, forming copper particles after carbonization. The photoevaporator prepared by this invention combines metal, carbon nanotubes, and biomass materials, exhibiting contrasting hydrophilic and hydrophobic properties and strong salt resistance.

The invention relates to a preparation method of a rare earth zeolite tanning agent, which comprises the following steps of: dissolving rare earth oxide in hydrochloric acid with the ratio of 1: 1, and evaporating until the rare earth oxide is nearly dry; the preparation method comprises the following steps: respectively dissolving L-phenylalanine and 1, 10-o-phenanthroline in an ethanol aqueous solution, adding a LaCl3. 6H2O ethanol aqueous solution, carrying out water bath reflux for 6 hours, and standing overnight; evaporating in a water bath, precipitating and crystallizing, washing with acetone, drying, adding zeolite, mixing, and grinding into powder, so as to prepare a rare earth zeolite tanning agent; a plant-rare earth zeolite combined tanning technology comprises the following procedures of normal mass production of pickled bare leather, fatty aldehyde pre-tanning, vegetable tanning, rare earth zeolite tanning agent combined tanning, alkali extraction, water washing, drum discharging, horse building and standing, and vegetable tanning of white wet leather. The natural plant tanning agent does not contain heavy metals, formaldehyde, benzene, phenol and other harmful components, and has the advantages of no toxicity, small pollution, biodegradability and the like; the plant-rare earth zeolite cooperates with the tanning effect, so that the shrinkage temperature is greatly increased, and the mechanical property and the sensory property are improved.

The utility model discloses a thin film for food, which relates to the field of thin films, and has the technical scheme that the thin film comprises a plurality of sections, adjacent sections are divided by tooth lines, any section is provided with a round sheet, the round sheet and the sections are divided by the tooth lines, a plurality of extension sections are integrally formed at the edge of the round sheet, and the extension sections and the sections are divided by the tooth lines. The contact area of the film and a food container is increased through the extension sections, so that the connection strength of the film and the container is improved, the sealing effect of the film is guaranteed, the polypropylene film has the advantages of being light in weight, non-toxic, odorless, moisture-proof and the like, the drawing force borne by the wafer is more uniform through the two extension sections, wrinkles are further reduced, and the service life of the film is prolonged. Meanwhile, the material utilization rate is ensured.

The invention aims to provide a method for recovering a fiber-reinforced thermosetting composite material by a catalytic oxidation method, which comprises the following steps: (1) cutting the composite material, and immersing the cut composite material in an organic solvent for pretreatment so as to swell the composite material; (2) uniformly dispersing nanoscale cerium oxide serving as a catalyst into a polar solvent to obtain a polar solvent with the catalyst; and (3) placing the pretreated composite material in a polar solvent with a catalyst, heating to 100-180 DEG C, carrying out catalytic degradation, and filtering after degradation is completed to obtain reinforced fibers and a recovery liquid. The degradation reaction can be carried out at a low temperature, and the reaction catalyst has no toxicity.