34 results about "Gamma ray irradiation" patented technology

The invention discloses a method for reducing cyanide in the grain moistening process of Maotai-flavor liquor, and belongs to the technical field of liquor brewing. The brewing raw material sorghum is subjected to gamma-ray irradiation pretreatment, and an abscisic acid solution is applied for multiple times in the grain moistening step in the brewing process. According to the method, 60Co-gamma ray irradiation and abscisic acid solution treatment are combined, the content of cyanogenic glycoside in baijiu brewing is controlled from the source, the content of cyanogenic glycoside in baijiu is remarkably reduced on the premise of not changing indexes such as moisture, crude protein, crude fat, total ash content, amylose and reducing sugar related to the quality of sorghum, and the quality of the baijiu is improved. And 105221.56 [mu] g / kg of a blank control group is reduced to 1395.32 + / -164.29 [mu] g / kg.

The invention belongs to the field of high polymer materials, and discloses a method for preparing a high-strength wear-resistant nylon 66 material, the surface of nano silicon dioxide is coated with a silane coupling agent and a cross-linking accelerant, the stability of a coating structure is improved through gamma ray irradiation, the mechanical property and wear resistance of nylon 66 can be improved by adding the silane coupling agent and the cross-linking accelerant into the nylon 66, and meanwhile, the high-strength wear-resistant nylon 66 material is prepared. After being used for a long time, the nylon 66 can still keep good rigidity and wear resistance and is excellent in comprehensive performance.

This invention belongs to the field of agricultural and forestry biotechnology, and relates to a method utilizing... 60 A method to increase the oviposition rate of beet armyworm by Co-γ irradiation was used. Beet armyworm pupae within 12 hours of pupal instar were collected and subjected to effective accumulated temperature treatment. Then, for male beet armyworm pupae, [further methods were employed]. 60 Co-source irradiation treatment; irradiated male beet armyworm pupae and unirradiated female pupae were placed in an incubator to cultivate and emerge as adults. The adults were then transferred to adult rearing cages and supplemented with honey water for nutrition. This invention, through effective accumulated temperature treatment, selects a large number of uniformly developed male beet armyworm pupae as irradiation targets. While ensuring emergence rate and adult lifespan, it significantly increases the egg production of beet armyworms and the yield of test insects. The operation process is simple, safe, and reliable. It provides a large source of production insects for the convenient and rapid use of beet armyworms to produce the biological control agent nucleopolyhedrovirus, and for using the insect as a host to propagate natural enemy parasitic wasps.

The invention discloses a stabilizer for a transparent PVC (Polyvinyl Chloride) product with good gamma-ray irradiation resistance. Comprising the following components in parts by weight: 10-20 parts of benzoic acid organic calcium salt, 10-20 parts of benzoic acid organic zinc salt, 10-20 parts of benzoic acid organic magnesium salt, 10-20 parts of benzoic acid organic aluminum salt, 20-30 parts of hydrotalcite, 5-10 parts of borate, 3-10 parts of a pyrimidine auxiliary color retention agent, 3-10 parts of a hindered amine light stabilizer and 5-10 parts of a thioester antioxidant. The hindered amine light stabilizer is a light stabilizer with a hindered amine methyl piperidine structure. The transparent PVC product added with the stabilizer has excellent gamma-ray irradiation resistance, and after the irradiation dose is 25kGy, the yellowness index YI of the transparent PVC product is less than 5.0, which indicates that the transparent PVC product added with the stabilizer does not change color in later application and storage processes after gamma-ray irradiation; the transparency is kept well, the light transmittance after irradiation is greater than 85%, and the transparency requirements of medical and food packaging are met; the mechanical property is well maintained, and the tensile strength retention rate after irradiation is greater than 90%.

The application discloses a modified polycaprolactone polyol, a preparation method and application thereof. The modified polycaprolactone polyol is formed by ester exchange polymerization reaction of polycarbonate diol as a starting agent and caprolactone under a catalyst and high temperature. The preparation method comprises the following steps: blending and dehydrating the polycarbonate diol and the caprolactone, then adding a catalyst and an antioxidant, and performing polymerization reaction by heating to obtain the modified polycaprolactone polyol. The application also provides application of the modified polycaprolactone polyol in sealing paint. The sealing paint provided by the application has a block structure, and has flexibility and strength, and has excellent gamma ray irradiation resistance, hydrolysis resistance and shielding and blocking performance, and can keep the paint film complete and air-tight in the case that the base material is deformed and cracked.

The application discloses a quantum dot light emitting diode and a preparation method thereof. The preparation method comprises the following steps: depositing a quantum dot solution on a prefabricated device, wherein the quantum dot solution comprises an organic solvent and quantum dot materials dispersed in the organic solvent; and performing gamma ray irradiation treatment on the quantum dot solution to form a quantum dot light emitting layer on the prefabricated device. The gamma ray irradiation treatment on the quantum dot light emitting layer can effectively improve the photoelectric performance of the quantum light emitting diode and improve the performance test efficiency of the quantum light emitting diode.

The application discloses an irradiation dose control system, which comprises a medium module, an irradiation container, a conveying device, a PLC controller, an irradiation device and an irradiation chamber. The irradiation dose control system adopts the conveying device to operate the medium module. The medium module is arranged in the irradiation container. The irradiation device is arranged in the irradiation chamber. The irradiation container is conveyed in a full-load mode according to the PLC control program and action instructions. The conveying device conveys the irradiation container into the irradiation chamber and receives gamma ray irradiation. The temperature in the irradiation chamber is controlled to be less than 90 DEG C. The irradiation chamber is provided with a temperature detector, a smoke detector, an audible and visual alarm device and a safety interlock. The application further discloses an application method of the irradiation dose control system. The application can improve the production capacity and greatly increase the economic benefits, conforms to the national low-carbon and energy-saving policy, has considerable comprehensive benefits, realizes the optimization and improvement of the irradiation dose control rate and dose non-uniformity, and greatly improves the energy utilization rate, the irradiation production capacity and the economic benefits.

The invention discloses an underwater super-oleophobic film for oil field logging and a preparation method of the underwater super-oleophobic film, and belongs to the technical field of functional film materials and logging tool surface protection. The method comprises the following steps: carrying out decontamination, degreasing and alkaline activation on the outer surface of a logging instrument, forming a film on the surface of a substrate, grafting a modified chitosan solution, and applying gamma-ray irradiation in a wet acid environment to realize three-dimensional cross-linking among chitosan molecular chains, so as to obtain an organic base film with hydrophilicity and adhesive force. And then immersing the organic base membrane into a mineralization solution obtained by dispersing calcium carbonate, bubbling carbon dioxide and carrying out solid-liquid separation, so that carbonate is subjected to induced nucleation and controlled growth on the surface of the membrane to form an inorganic mineralization layer, and an organic-inorganic hybrid membrane with a micro-nano coarse structure is constructed. The thin film shows underwater super-oleophobic and low-adhesion characteristics in a saline water environment, has mechanical strength and anti-scouring capacity, can reduce pollution of oil stains to a logging instrument shell and signal attenuation, and improves logging data reliability.

This invention provides an improved depth filtration medium with reduced extractant for DSP filtration and clarification applications. Furthermore, it provides an improved depth filtration medium that is compatible with gamma irradiation-based filter sterilization processes. [Solution] A depth filtration medium is provided for clarifying the recovered material from a feed stream of a cell culture containing therapeutic biomolecules. The depth filtration medium is composed of a sintered mixture of a polymer adsorbent and a thermoplastic binder, has extremely low extractability, and does not require pre-washing before use. Furthermore, the constituent materials used in the sintered depth filter medium exhibit high stability to gamma rays and are compatible with gamma-based pre-use sterilization processes.

This application provides a method for degrading antibiotic resistance genes in penicillin fermentation residue, comprising: Step S1, providing penicillin fermentation residue to be treated. The penicillin fermentation residue contains at least one target antibiotic resistance gene. Step S2, subjecting the penicillin fermentation residue to gamma ray irradiation treatment. This application addresses the problems of low removal rate of antibiotic resistance genes (ARGs), easy rebound, high treatment cost, and high risk of secondary pollution in existing penicillin fermentation residue treatment technologies by subjecting the penicillin fermentation residue to gamma ray irradiation treatment.

The invention discloses a high polymer material radiolysis micromolecule product detection method which comprises the following steps: S1, filling a high polymer material into a solid phase microextraction device to form a negative pressure state; s2, performing gamma ray irradiation on the solid-phase microextraction device; s3, solid-phase microextraction fibers in the solid-phase microextraction device are taken out, and radiolysis micromolecule products adsorbed on the solid-phase microextraction fibers are analyzed through a gas chromatography-mass spectrometer; and S4, analyzing and determining the chemical structure of the radiolysis small molecule product, establishing a quantitative working curve between the peak area and the concentration of the standard product by combining the standard product, and calculating to obtain the content of the radiolysis small molecule product of the high polymer material under the radiation dose. According to the invention, solid-phase microextraction is combined with gas chromatography-mass spectrometry to analyze small molecular substances after high polymer materials such as rubber, resin and the like are irradiated, so that the ray irradiation resistance of the high polymer materials is evaluated; by combining qualitative and quantitative analysis methods, the content of micromolecular products of the high polymer material under different radiation doses can be obtained.

The invention discloses an injection molding process of a modified plastic toy material, and belongs to the technical field of high polymer materials, raw material pretreatment is completed through PP particle drying, gamma ray irradiation modification and MAH / DCP premixing; then, a PP-g-MAH melt grafting reaction is achieved through a double-screw extruder under segmented temperature control, and a graft is obtained through water-cooling granulation; then, the PP-g-MAH graft is mixed with SBS, POE and DCP according to the proportion, and a sea island structure is formed through high-shear melt blending of a dynamic vulcanization process; and finally, through precise temperature-controlled injection molding, including multi-stage pressure maintaining, prolonged cooling and annealing treatment, the finished product has the impact strength of not less than 25 kJ / m and the elongation at break of more than 300%. The injection molding process of the modified plastic toy material solves the technical problems of high brittleness and poor toughness of a polypropylene material.

The present invention discloses a method for preparing a thermosetting resin containing gamma-ray sensitive groups. The method comprises the following steps: Step 1: dissolving a monomer A containing two hydrazide groups, a monomer B containing two aldehyde groups or ketone groups, and a monomer C containing three aldehyde groups or ketone groups in a solvent; Step 2: uniformly mixing the solutions containing monomers A and B and reacting them to generate a linear prepolymer; Step 3: adding a solution of monomer C to the linear prepolymer and continuing the reaction; Step 4: pouring the reactants into a polytetrafluoroethylene mold, curing them, and vacuum drying them to obtain a thermosetting resin containing gamma-ray sensitive groups. The thermosetting resin prepared by this method can be rapidly cured at a suitable temperature, and the obtained thermosetting resin and a composite material prepared using the thermosetting resin as a matrix can be rapidly degraded under gamma-ray irradiation conditions, which has great economic and environmental advantages for the recycling and reuse of thermosetting resin-based composite materials.

The invention discloses a wide-temperature-range portable vacuum gamma-ray irradiation system, which belongs to the technical field of irradiation equipment, and comprises an irradiation source, a variable-temperature vacuum cavity and a normal-temperature vacuum cavity, a variable-temperature sample table is arranged in the variable-temperature vacuum cavity, and a normal-temperature sample table is arranged in the normal-temperature vacuum cavity, and the variable-temperature sample stage is a sample stage of which the temperature can be changed. According to the wide-temperature-range portable vacuum gamma-ray irradiation system disclosed by the invention, the deviation of a material between a simulation experiment and an actual working condition of a fusion reactor is reduced.

The invention discloses an irradiation-resistant polycarbonate composite material which is prepared from the following components: polycarbonate resin, a compound irradiation-resistant stable system, a high-molecular hydrolysis stabilizer and a processing aid, the compound radiation-resistant stable system comprises an organic cerium compound and an oligomer type benzimidazole ultraviolet stabilizer; the processing aid comprises an antioxidant and a release agent. The compound stable system is formed by compounding the organic cerium compound and the oligomer type benzimidazole ultraviolet stabilizer according to a specific proportion, the organic cerium compound and the oligomer type benzimidazole ultraviolet stabilizer have a synergistic effect, and the gamma ray irradiation resistance stability of the material is greatly improved on the premise that the initial optical performance of the material is not sacrificed. The material is particularly suitable for manufacturing transparent medical devices, such as endoscope components and surgical operating instruments, which need to be repeatedly sterilized by gamma rays and high-temperature steam, and the industrial problems that the existing material is easy to yellow and embrittle are solved.

The application provides a graphene-loaded flat plate filler and application thereof, and relates to the technical field of sewage treatment. The graphene-loaded flat plate filler provided by the application comprises a flat plate filler base material and positive charge modified graphene oxide, and the positive charge modified graphene oxide is loaded on the flat plate filler base material; and the preparation method of the positive charge modified graphene oxide comprises the following steps: dispersing graphene oxide in a solvent, then mixing with an iron salt, and then preparing the positive charge modified graphene oxide through gamma ray irradiation reaction. The graphene-loaded flat plate filler can attract the microorganism flora with negative charges which are dominant in sewage treatment through the loaded positive charge modified graphene oxide, and the surface of the flat plate filler can be provided with a honeycomb-shaped recess structure, so that the specific surface area of the filler is improved, the optimal environment and space are provided for the microorganism adhesion, and the biofilm formation effect is greatly promoted.

The invention discloses gamma ray irradiation resistant optical glue as well as a preparation method and application thereof, and belongs to the field of adhesive composition and preparation. The formula of the optical glue comprises an acrylate monomer and a methacrylate monomer which are specifically combined and proportioned, and nano silicon dioxide is used as a radiation stabilizer, and a benzene ring-containing plasticizer is used cooperatively. The core of the technical scheme is a specific acrylate-methacrylate copolymer system, nano silicon dioxide is introduced as a radiation stabilizer, a benzene ring-containing plasticizer is added, and the overall good effect that the glue is resistant to gamma ray irradiation is achieved by utilizing the synergistic effect of the nano silicon dioxide and the benzene ring-containing plasticizer. According to the invention, photooxidation and free radical chain reaction which cause yellowing are inhibited in a targeted manner, and the anti-yellowing performance and the like are more excellent. The method is crucial for optical coupling application, can maintain high light transmittance for a long time, and ensures that the signal-to-noise ratio of the detector is not degraded.

The application belongs to the field of high polymer materials, and discloses a method for preparing high-strength wear-resistant nylon 66 material, wherein a silane coupling agent and a cross-linking promoter are coated on the surface of nano silicon dioxide, and the stability of the coating structure is improved through gamma ray irradiation, so that the mechanical properties and wear resistance of the nylon 66 can be improved after the nylon 66 is added, and meanwhile, the nylon 66 of the application can still maintain good rigidity and wear resistance and has excellent comprehensive performance after long-term use.

A friction device and its application method for simulating a hybrid field of microgravity, radiation, and temperature on an extraterrestrial body can meet the demand for simulating material damage under extreme conditions in the cosmic environment (high radiation, extreme temperature, and extreme gravity). This invention uses high-permeability magnetic materials, a vacuum pump, and a gamma radiation source to simulate the cosmic environment. Traditional "stretching suspension" methods are designed for medium or large spacecraft and robotic arms, but cannot balance the partial gravity on small particles by stretching and suspending them. This device overcomes the gravity of small molecular particles by constructing Maxwell coil pairs to achieve a gradient magnetic field, improving the reliability of the simulated environment. Simultaneously, this invention can simulate the extremely cold or hot climate conditions, vacuum conditions, and high-energy gamma-ray radiation conditions of the lunar surface. Furthermore, it can be used to conduct wear tests on high-performance aerospace materials under hypergravity or weightlessness conditions caused by Martian dust and interstellar dust.

The invention provides a construction method and application of a radioactive skin fibrosis animal model. The method comprises the following steps: irradiating a local body area of a healthy animal with 30-45 Gy < 60 > Co-gamma rays at a certain dosage rate, continuing feeding and observing, and establishing a radioactive skin fibrosis animal model. According to the method, ideal parameters for establishing the radioactive skin fibrosis animal model by utilizing the < 60 > Co-gamma ray irradiation source are explored, the model has the advantages of simplicity and convenience in operation, safety in material taking and convenience in evaluation, and an effective animal model is provided for molecular mechanism research and drug screening of radioactive skin fibrosis.

The invention relates to a chloroprene rubber foam material and a preparation method adopting a supercritical technology. The chloroprene rubber foam material comprises the following raw material components in parts by weight: 80-100 parts of chloroprene rubber, 15-35 parts of barium sulfate and 0.3-0.8 part of a nucleating agent, and the nucleating agent is a mixture of magnesium oxide and zinc oxide. A gamma ray irradiation pre-crosslinking technology is adopted to construct a pre-crosslinking network, then the pre-crosslinking network is cooled to the room temperature, a supercritical foaming pressure relief link is adopted, a three-stage pressure relief process is applied, and then the pre-crosslinking network is cooled to the room temperature, so that a foundation is laid for the mechanical property of the material, and a reliable structural support is provided for subsequent supercritical foaming; the problem of insufficient strength caused by unstable crosslinking in the traditional process is solved; the high-pressure kettle is matched with amino-functionalized MOF heterogeneous nucleation points, so that the foam structure is effectively regulated and controlled, the foam is uniform and controllable, and then the light chloroprene rubber supercritical foaming material with the weight of 80-130 kg / m is prepared by cooling to the room temperature.

The invention discloses a gamma-ray irradiation resistant polycarbonate composite material and a preparation method thereof. The gamma-ray irradiation resistant polycarbonate composite material is prepared from the following raw materials in parts by weight: 85 to 99 parts of polycarbonate resin, 0.1 to 1.0 part of a free radical stabilizer, 0.1 to 1.0 part of an antioxidant, 0.1 to 1.0 part of a chain extender and 0.01 to 5 parts of an auxiliary agent, under the combined action of the free radical stabilizer, the antioxidant and the chain extender, the gamma-ray irradiation resistance effect of the gamma-ray irradiation-resistant polycarbonate composite material is remarkably improved, and after the gamma-ray irradiation-resistant polycarbonate composite material is irradiated by 30 KGY gamma rays, the color only slightly turns yellow and slowly recovers within two weeks; and the original light transmittance performance and conventional mechanical properties of polycarbonate are not changed.

This invention discloses a method for preparing high-performance oxygen evolution electrocatalysts based on gamma-ray irradiation. The method includes pretreating a foamed metal substrate; dissolving at least one of an iron salt, cobalt salt, and nickel salt in ultrapure water to obtain an iron / cobalt / nickel salt solution; in-situ growing an iron / cobalt / nickel catalyst precursor on the pretreated metal foam substrate using a hydrothermal method or a combination of hydrothermal and high-temperature calcination; and irradiating the iron / cobalt / nickel catalyst precursor with gamma rays to obtain the oxygen evolution electrocatalyst. The molar ratio of the iron salt, cobalt salt, and nickel salt is x:y:z, where x, y, and z are independently selected from 0 to 1, and x, y, and z are not simultaneously zero. This invention can successfully synthesize iron-cobalt-nickel-based OER electrocatalysts with excellent activity and stability, thereby accelerating the efficiency of water electrolysis. This preparation method has good versatility and provides a new approach for the preparation of non-precious metal OER catalysts.

The application discloses an irradiation method for improving defects of perovskite quantum dots, and the method comprises pretreatment, optional low-energy electron irradiation or low-energy proton irradiation or low-dose gamma ray irradiation, and post-treatment: firstly, washing and drying glass embedded with ABX3 type perovskite quantum dots; and then, irradiating the glass by low-energy electrons or low-energy protons or low-dose gamma rays with specific parameters, so as to improve defects and improve performance. The method has strong pertinence, can improve photoluminescence quantum yield of perovskite quantum dots, improves photoelectric conversion efficiency of a solar cell prepared based on the perovskite quantum dots, is suitable for aerospace application scenarios, is simple to operate and can be scaled up, and provides key technical support for application of perovskite solar cells in the field of spaceflight.

The invention relates to a method for improving the quality of boneless chicken feet by adopting 60Co gamma ray irradiation, which comprises the following steps: pretreating the boneless chicken feet, and constructing a conformational prestress area with elastic residual tension in the tissue structure of the chicken feet in a manner of combining micro traction with low-temperature standing, so as to provide a structural tension guide basis for the irradiation process; on the basis of the conformational pre-stress area, 60Co gamma rays are applied, the irradiation dose is controlled between 2 kGy and 10 kGy, and a dynamic staggered cracking area is formed by inducing non-uniform energy distribution, so that directional cracking and reaction sites are exposed and reentangled in collagen and elastin chain segments, the tissue structure is remodeled, and the chewing elasticity is enhanced; according to the method, a protein chain segment directional reconstruction mechanism is constructed, a microscopic conformation forming path is controlled, and the interface structure regulation and control and flavor progressive release system is combined, so that multiple improvements on the tissue elasticity, the taste resilience, the flavor expressive force and the storage and transportation stability of the chicken feet are realized.

The invention belongs to the technical field of food preservation, and particularly relates to a postharvest cherry preservation method based on low-dose gamma-ray irradiation. The method comprises the following steps: picking cherries in a commodity mature period, irradiating the cherries with low-dose < 60 > Co-gamma rays, and storing the cherries on a shelf. The method is characterized in that the irradiation dose is selected in a targeted mode according to the variety of the cherries, the reduction of the hardness of the fruits can be effectively delayed, the accumulation of the content of soluble solids is promoted, and therefore the texture and flavor of the cherries are maintained, and the dose range is generally 25 Gy to 200 Gy. According to the method, variety-specific low-dose irradiation treatment is adopted, the commodity of cherries is effectively maintained, meanwhile, the edible quality (hardness and flavor) of the cherries is remarkably improved, the problems of fruit softening, flavor deterioration and the like caused by a traditional high-dose irradiation technology are solved, and an efficient, safe and quality-oriented new method is provided for preservation of the picked cherries.

The invention discloses a gamma ray irradiation device for nuclide identification instrument calibration, which is characterized by comprising a radioactive source shielding container, a radioactive source selection device, a gas path opening and closing device, a pneumatic transmission gas inlet pipeline and a radioactive source pneumatic transmission channel, wherein the radioactive source selection device comprises a radioactive source turntable, a control motor, a turntable original point and a radioactive source bearing structure, and an output shaft of the control motor is fixedly connected with the end part of a central shaft of the radioactive source turntable; the radioactive source turntable is provided with a plurality of source positions, the radioactive source bearing structures are arranged in the source positions and are used for placing radioactive sources, and the turntable original point is used for calibrating and feeding back an initial position; the radioactive source shielding container is sleeved outside the radioactive source turntable and is used for shielding radioactive rays generated by a radioactive source in the radioactive source turntable; and the pneumatic transmission air inlet pipeline is positioned below the radioactive source turntable and is communicated with the radioactive source turntable.

The present invention relates to a method for quickly identifying the conduction characteristics of a silicon carbide power transistor under a high-temperature irradiation environment. The device involved in the method is composed of a blast drying oven, a sample test plate, an adapter, a conduction test module, and a computer. During the irradiation process, the temperature of the blast drying oven is controlled by a remote controller. The test software in the computer is used to set a voltage test to obtain the conduction characteristic data of the silicon carbide vertical double-diffused transistor, and then the conduction characteristic curve is optimized and fitted to change with temperature. The blast drying oven and the sample test plate are then placed in a cobalt-60 gamma ray irradiation chamber to obtain the conduction characteristic curve of the silicon carbide power transistor under a high-temperature irradiation environment. The transistor conduction characteristic curves obtained by the test before and after irradiation are compared to quickly determine whether there will be a serious impact on the conduction performance of the device. The present invention can quickly and accurately identify the degree of conduction damage of the silicon carbide power transistor under a high-temperature irradiation environment, providing important reference information for engineers and researchers in related fields.

The invention provides a preparation method of a deuterium-doped and carrier gas synergistic anti-radiation optical fiber, the optical fiber and application, and belongs to the technical field of anti-radiation optical fibers, the preparation method comprises the following steps: firstly, preparing an optical fiber preform with a fiber core doped with rare earth ions and OD groups by adopting an improved chemical vapor deposition and solution doping combined technology; drawing the optical fiber preform to prepare a double-cladding rare earth ion doped optical fiber; and finally carrying out carrier gas treatment on the double-clad rare earth ion doped optical fiber, the carrier gas being at least one of deuterium gas, hydrogen gas or oxygen gas, and obtaining the anti-radiation optical fiber. Through the synergistic effect of introduced OD groups and loaded gas molecules, the anti-radiation stability of the prepared anti-radiation optical fiber is jointly enhanced, after the finally prepared anti-radiation optical fiber is irradiated by gamma rays with the total dose of 200Gy (Si), the laser slope efficiency change at the 1080nm wave band is less than 5%, the radiation darkening effect is thoroughly inhibited, and the anti-radiation stability of the prepared anti-radiation optical fiber is improved. The problem that in the prior art, the anti-radiation performance is insufficient or cannot be maintained for a long time is solved.

The invention provides a method for preparing a three-dimensional graphene aerogel photo-thermal material through gamma ray irradiation, which comprises the following steps: uniformly mixing a graphene oxide aqueous solution and L-ascorbic acid, and then putting the mixture into a closed container for reduction reaction to form wet hydrogel; the wet hydrogel is washed and then solidified in liquid nitrogen, and three-dimensional graphene aerogel is obtained through low-temperature freeze drying; the three-dimensional graphene aerogel is irradiated through gamma rays, and the three-dimensional graphene aerogel photo-thermal material is obtained. By introducing gamma rays, the photo-thermal performance of the three-dimensional graphene aerogel material can be remarkably improved, the water evaporation rate of the three-dimensional graphene aerogel material is increased, and meanwhile the three-dimensional graphene aerogel material has excellent recycling performance and durability. The steps are simple, harmful substances are not generated, and the obtained product is high in stability, resistant to high temperature and easy to store and has practicability. The prepared three-dimensional graphene aerogel photo-thermal material can be applied to the fields of seawater desalination, sewage purification, wastewater treatment and the like.