65 results about "Oxidative degradation" patented technology

The invention discloses a preparation method of polydihydroxyindole and application of the polydihydroxyindole in hair dyeing, and belongs to the field of functional materials and the field of daily cosmetics. The polydihydroxyindole is obtained in the mode that Boc-true melanin is formed after true melanin is protected through phenolic hydroxyl groups, the Boc-true melanin is subjected to oxidative degradation, separation and purification and then deprotection, the true melanin is naturally extracted melanin or chemically synthesized melanin or melanin synthesized through a microbiological method, and the oxidative degradation method is an enzymatic oxidative degradation method. The obtained polydihydroxyindole is moderate in molecular weight and has excellent permeability on hair, a strong alkaline condition is not needed in the oligomer dyeing process, and hair quality damage can be reduced; the polydihydroxyindole is oxidized again in the hair dyeing process to generate melanin, and under the condition that the pH is 5-7, and in the presence of ferric ions, the polydihydroxyindole can be more tightly combined with keratin on the hair to coat the outer layer of the hair, so that the hair color is deepened, and the effects of dyeing and protecting the hair are achieved.

The invention discloses a detection method for evaluating an interface oxidative degradation process of a carbon capture chemical absorbent, belongs to the technical field of absorbent degradation of a carbon capture chemical absorption system, and particularly relates to evaluation of the interface oxidative degradation process. In order to solve the problems that an existing carbon capture chemical absorbent oxidative degradation process evaluation system cannot effectively simulate actual working conditions, cannot reflect an interface oxidative degradation process, is long in experimental period, is discontinuous in detection process and the like, the invention provides a novel detection method. Through the steps of aerosol micro-interface generation, multi-channel oxidative degradation reaction, optical signal real-time dynamic capture and the like, the oxidative degradation reaction process of a chemical absorbent on a micro scale is detected, on one hand, the interface reaction process which cannot be simulated in a volume phase experiment system can be explored; on the other hand, the problems of long experimental period, low detection time resolution and the like in the traditional oxidative degradation reaction process evaluation can be avoided, and a more efficient detection effect is achieved.

The invention discloses a sustainable purification method based on nanobubbles, and relates to the technical field of water treatment. The sustainable purification method based on the nanobubbles comprises the following steps: preparing a nanobubble solution through a nanobubble generator; mixing the nano-bubble solution with hydrogen persulfate to activate the hydrogen persulfate, and promoting decomposition of the hydrogen persulfate on a nano-bubble interface to generate free sulfate radicals; the peroxydisulfate is used for water treatment and purification after being activated. By means of the innovative structural design and the utilization of the characteristics of the nano bubbles, the oxidative degradation efficiency is improved, meanwhile, the purification capacity can be kept as long as several months, low-energy-consumption, pollution-free and sustainable green environment restoration is achieved, and an efficient, environment-friendly and economical new way is provided for water pollution treatment.

The invention relates to a method for preparing a magnetic Fe3O4 / Cu / nitrogen-doped carbon composite material by a one-step method and an application of the magnetic Fe3O4 / Cu / nitrogen-doped carbon composite material, and aims to solve the problems of poor catalytic activity, complex separation and recovery and complex synthesis method of the existing PMS activated catalytic material. According to the method, melamine is selected as a carbon source and a nitrogen source, ferric nitrate and copper sulfate are selected as an iron source and a copper source respectively, and the magnetic Fe3O4 / Cu / nitrogen-doped carbon composite material is synthesized in one step by adopting a high-temperature pyrolysis method. The adsorbent not only has excellent adsorption performance on dye-methylene blue, but also can realize high-efficiency oxidative degradation. The magnetic Fe3O4 / Cu / nitrogen-doped carbon composite material prepared by the invention not only has excellent catalytic performance, but also is easy to magnetically separate and recycle, and is suitable for efficient treatment of dye wastewater. The method is applied to the field of catalytic degradation of wastewater.

The present invention discloses a method for selectively oxidizing and degrading polystyrene to produce benzoic acid. In the present invention, nitric acid or a nitrate solution is used as an oxidant to convert polystyrene into high-value chemical raw materials of small molecules, namely benzoic acid. Through the carbon-centered free radicals generated at the weak sites on the carbon chain of polystyrene, the introduction of oxygen-containing functional groups is caused under the oxidation of nitric acid and nitrate solutions, thereby causing the cleavage of C-C bonds and resulting in the selective oxidation and degradation of polystyrene. The reaction conditions of this process are mild, the yield and selectivity of the main product benzoic acid are relatively high, and the impact on the environment is small, providing a new method for the resource-based high-value recycling of polystyrene.

The invention discloses a device and a method for synchronously removing heavy metals and organic matters in industrial wastewater, and particularly relates to the technical field of water treatment.A complexing agent is used for promoting manganese dioxide on the surface of manganese sand to activate peroxymonosulfate to generate high-activity sulfate free radicals and persulfate free radicals, so that the oxidative degradation efficiency of organic pollutants is improved; meanwhile, residual manganese dioxide formed in the reaction process has good heavy metal adsorption performance, and the mass transfer and reaction rate of pollutants is enhanced by combining the dynamic fluidized contact effect of manganese sand particles in the fluidized bed reactor. According to the process provided by the invention, various organic pollutants and heavy metal ions in the wastewater can be synchronously and efficiently removed under a mild condition, the problems of low treatment efficiency, complex process flow, secondary pollution and the like in a traditional method are avoided, and the process has a good application prospect and popularization value; the technical challenges of complex components and high treatment difficulty of industrial wastewater can be effectively handled.

The invention relates to the technical field of heavy metal content detection, in particular to a heavy metal content detection method for preparation management, which comprises the following steps of: setting a sampling time point, collecting samples in each stage of preparation production, conveying the samples to a sample treatment area, treating to obtain a detection sample, and performing turbidity detection, pH (Potential of Hydrogen) determination and oxidative degradation analysis to obtain the content of heavy metal in the preparation management. Calculating a display state evaluation coefficient of the detection sample, judging whether the detection sample is abnormal or not, if the detection sample is abnormal, analyzing and calculating actual concentration deviation values of various heavy metal ions, screening abnormal heavy metal ions, determining target heavy metal ions through continuous detection, and performing accurate content detection on the target heavy metal ions. According to the method, the content deviation level is calculated, the content adjustment parameters are generated, the production process parameters are optimized according to the content deviation level, dynamic adjustment is achieved, and therefore the precision, stability and controllability of heavy metal content detection are improved by combining a multi-dimensional detection means and a dynamic regulation and control mechanism.

This invention belongs to the fields of biomedicine, beauty, and personal care health technology, and discloses a dual-target oil-controlling peptide co-amorphous assembly, its preparation method, and its application. The method involves adding capryloylglycine and acetyl tetrapeptide-5 to an alcohol solution, heating to dissolve, rotary evaporating, and drying to obtain a co-amorphous compound. This compound is then mixed with a cyclodextrin compound and water, rotary evaporating, and drying to obtain the dual-target oil-controlling peptide co-amorphous assembly. This invention employs a co-amorphous combination with cyclodextrin inclusion to assemble acetyl tetrapeptide-5 and capryloylglycine, solving the problem of their large solubility differences and difficulty in coexistence, and significantly improving the solubility of capryloylglycine. This assembly enables simultaneous transdermal delivery of the two active components through nano-assembly, helping to enhance the stability of acetyl tetrapeptide-5 and reduce its oxidative degradation. The two components synergistically control oil through a dual pathway of inhibiting 5α-reductase and targeting the MC5R receptor, respectively, exhibiting superior bioavailability and efficacy compared to a single component.

The invention discloses an anti-fracture vehicle-mounted data line and a manufacturing method of an anti-fracture jacket material thereof. The anti-fracture vehicle-mounted data line comprises a core wire, a shielding layer, a tensile layer, an anti-fracture jacket and an end, the shielding layer is arranged on the outer side of the core wire in a sleeving manner; the tensile layer is arranged on the outer side of the shielding layer in a sleeving manner; the anti-fracture jacket is arranged on the outer side of the tensile layer in a sleeving manner; the end heads are arranged at the two ends of the anti-fracture outer cover. The anti-fracture coating material comprises a base resin material for providing elasticity and enhancing tensile strength, an inorganic filler for improving toughness, a surface treating agent for enhancing binding force, a plasticizer for improving plasticity, a stabilizer for preventing oxidative degradation and glass fibers for improving tear resistance. The anti-fracture fabric is excellent in anti-fracture performance.

The invention belongs to the field of biological carbon fertilizers, and provides a method for preparing a biological carbon fertilizer from agricultural straws through rapid decomposition and returning the biological carbon fertilizer to the field nearby, which comprises the following steps: a, crushing the agricultural straws into crushed materials with the length of not more than 3mm; b, adding water which is 2-3 times of the weight of the crushed material and a composite oxidative degradation agent which accounts for 2-3% of the dry weight of the crushed material into the crushed material, and stirring and mixing for 15-20 minutes to obtain a semi-finished product of the biological carbon fertilizer; and c, directly returning the semi-finished product of the biological carbon fertilizer to the field or storing and decomposing. According to the invention, the agricultural straws can be quickly decomposed and cured, and the treated biological carbon fertilizer contains more than 70% of organic matters and more than 5% of humic acid; and bacteria and insect pests in the straws are killed, the carbon source of the soil is increased, the structure of the soil is improved, and the water and fertilizer retention capability of the soil is enhanced.

The invention relates to the technical field of soil remediation, in particular to a movable soil remediation device which comprises a treatment box, and a partition plate is mounted in the treatment box to divide a cavity in the treatment box into a first treatment chamber and a second treatment chamber; the crushing and screening unit is used for crushing stones in the soil and screening the soil; the thermal desorption unit is used for removing volatile pollutants in the soil, and the soil input end of the thermal desorption unit is in butt joint with the output end of the crushing and screening unit; the first conveying machine is used for conveying soil, and the input end of the first conveying unit is in butt joint with the soil output end of the thermal desorption unit; the oxidative degradation unit is used for carrying out oxidative degradation on pollutants in soil, and smashing and screening, thermal desorption and oxidative degradation are integrated into single equipment, so that the soil transfer link is reduced, and the remediation efficiency is improved; the integrated box body structure facilitates vehicle-mounted transfer and is suitable for on-site repair of various polluted sites.

The invention discloses a programmable atmosphere carbon dioxide absorbent forced oxidative degradation test system and method, and the system comprises a gas supply and mixing module which is used for generating simulated flue gas with programmable components and humidity through a multi-path gas source and a mass flow controller; the constant-temperature and constant-pressure reaction module comprises a reaction kettle with heating, stirring and pressure and temperature monitoring functions; the isobaric sampling and re-pressing gas supply module is used for maintaining the system pressure and atmosphere stability through a buffer cavity and a re-pressing branch during sampling; and an integrated control module. The method comprises the following steps: preparing a system, setting parameters, generating a simulated atmosphere, establishing constant-temperature and constant-pressure reaction conditions, and carrying out isobaric sampling and automatic re-pressing compensation. By integrating programmable atmosphere control and a unique isobaric sampling and re-pressing structure, long-term and multi-frequency stable sampling in a simulated real flue gas environment is realized, so that high-fidelity and high-repeatability degradation test data is obtained.

The present invention relates to a device and method for the oxidative degradation of typical PPCPs in sewage, belonging to the field of sewage treatment technology. The device includes a treatment tank, a filter assembly disposed within the treatment tank, a lamp treatment assembly disposed above the filter assembly, the filter assembly and the lamp treatment assembly being connected via a pumping assembly, the lamp treatment assembly comprising a water guide tray and an ultraviolet lamp tray, the water guide tray being used to guide water flow from the inside to the outside during rotation, and the ultraviolet lamp tray being used to perform ultraviolet lamp treatment on the water flow on the water guide tray. The present invention provides a device and method for the oxidative degradation of typical PPCPs in sewage, which circulates sewage mixed with a photo-Fenton catalyst within the device, continuously filters and lamp-treats the sewage during the circulation process, and fully oxidizes and degrades the typical PPCPs in the sewage.

This invention belongs to the field of water environment treatment and restoration technology, specifically involving a method for simultaneous restoration of water bodies and sediments using a microbial electrochemical restoration device. The restoration method provided in this invention differs from traditional methods that enhance the transport of electron acceptors such as oxygen or nitrates into the sediment. Instead, it can sequentially form two reaction zones, aerobic and anaerobic, in the longitudinal section of a device. In the anaerobic zone (sediment), electrons from pollutants are directionally pumped out to the water body driven by the redox potential difference between the sediment and water phases. Therefore, pollutants in the sediment and water body can undergo oxidative degradation and reductive degradation, respectively, thereby achieving simultaneous restoration of water bodies and sediments.

The application relates to the field of polyamide material analysis, and discloses application of an indantrione color developing reagent in determination of polyamide hydrolysis products and a method for determining the content of the polyamide hydrolysis products, wherein the indantrione color developing reagent contains an indantrione-ethylene glycol solution and an acetic acid-sodium acetate buffer solution. The application provided in the application adopts ethylene glycol as a single solvent of the indantrione, effectively inhibits oxidative degradation of the indantrione under high-temperature color developing conditions, and enables uniform color development of oligomers. The application does not add antioxidants, avoids interference with color developing reactions, is accurate and reliable in determination, is simple in preparation due to the single solvent, has a long storage time under light shielding at 4 DEG C, and can not only accurately determine monomers of polyamides and dimers to heptamers of the monomers, but also accurately determine various polyamide hydrolysis products, and has a good linear relationship.

The utility model discloses a carbon dioxide absorbent oxidative degradation analysis device, which belongs to the technical field of detection devices, and is characterized by comprising a base, a tank body is fixedly connected to the left side of the top of the base, a mixing assembly is fixedly connected to the inside of the tank body, and a detection assembly is fixedly connected to the right side of the top of the tank body; the mixing assembly comprises a storage pipe, and solves the problems that an existing analysis device is inconvenient to increase the contact area of a reagent and air, and in actual detection, due to the limitation of the device structure, the reagent and the air are inconvenient to drive to fully flow, so that the contact area of the air and the reagent in a tank is not good, and the air and the reagent cannot be fully mixed; the problems that in the prior art, a carbon dioxide absorbent and oxygen and other components in air are not fully subjected to an oxidation reaction, the oxidative degradation process of the absorbent in actual use is difficult to truly simulate, the analysis result is affected, and the practicability of the device is reduced are solved.

The invention belongs to the technical field of high polymer materials, and particularly relates to an in-vehicle aldehyde substance purification filler based on a coordination polymer and a preparation method. The in-vehicle aldehyde substance purification filler comprises an aldehyde targeting coordination polymer and a carrier with a purification function, and the aldehyde targeting coordination polymer is loaded on the carrier with the purification function. According to the technical scheme, the purification efficiency of the in-vehicle aldehyde substance purification filler based on the coordination polymer is remarkably improved, through precise molecular design of the aldehyde targeted coordination polymer, the specific pore diameter of the aldehyde targeted coordination polymer is highly matched with the molecular size of formaldehyde and acetaldehyde, and selective adsorption of aldehyde substances is achieved. Metal active sites Cu or Zn in the coordination polymer can catalyze aldehyde molecules to be subjected to oxidative degradation reaction, the highest formaldehyde degradation rate within 6 hours reaches 88.6%, the acetaldehyde degradation rate reaches 84.2%, and the equilibrium adsorption capacity reaches 22.5 mg / g and is 2.5 times or above that of a traditional mineral adsorption material.

The application discloses an amine absorbent with an anti-oxidative degradation function and a preparation method thereof, and the amine absorbent comprises an AEEA absorbent and an anti-oxidative degradation agent, the anti-oxidative degradation agent accounts for 0.1% of the mass fraction of the AEEA absorbent; the AEEA absorbent is prepared from AEEA and water; the anti-oxidative degradation agent is one of ascorbic acid, bisphenol A, EDTA-2Na and dipentylamine; or the anti-oxidative degradation agent is a mixture of chitosan and thymol. The preparation method comprises the following steps: firstly, uniformly mixing AEEA and water according to a proportion to obtain a 30wt% AEEA aqueous solution as the AEEA absorbent, then preparing an anti-oxidative degradation inhibitor, and finally adding the anti-oxidative degradation inhibitor into the AEEA absorbent according to a formula amount to obtain the amine absorbent. The method is simple, the prepared amine absorbent has the anti-oxidative degradation function, can effectively slow down the degradation rate of the amine absorbent, prolong the service life of the amine absorbent and reduce the CO2 capture cost.

The invention relates to composite particles for repairing polluted water and a preparation method and application of the composite particles, and belongs to the technical field of environmental functional materials and water pollution governing. Through double chemical modification of acrylic acid grafting and glutaraldehyde crosslinking, a sodium alginate / chitosan charcoal carrier is modified into a high-strength pH-responsive intelligent carrier, and the composite particles are used for repairing the polluted water. And then the plant growth-promoting bacteria and sodium percarbonate are compounded and granulated. After being added, the carrier can effectively resist SPC initial oxidation impact, protect the activity of thalli, intelligently release PGPB along with the change of pH, accurately link and deepen the oxidative degradation process, and realize efficient and deep mineralization of pollutants. Experiments show that the microbial protection rate of the material is greater than 95%, the 72-hour phenol mineralization rate reaches 85%, and the material is remarkably superior to that of a traditional method. According to the invention, the problem of compatibility between the oxidant and microorganisms is solved, and a new technology is provided for efficient and green water body remediation.

The application relates to a composite slow-release material for groundwater remediation and a preparation process thereof, and relates to the technical field of groundwater remediation materials. The preparation raw materials comprise the following components in mass fractions: 20-40 parts of a composite oxidant, 30-50 parts of an inner layer wall material, 10-20 parts of glucose, 40-60 parts of an outer layer wall material and 5-15 parts of a Fenton self-mesoporous titanium dioxide. The preparation process comprises the following steps: preparing the Fenton self-mesoporous titanium dioxide, preparing an inner layer microcapsule and preparing the composite slow-release material. The application has the effect of improving the pollutant degradation performance of the composite slow-release material. The composite slow-release material has good oxidative degradation capacity, can promote the growth and metabolism of microorganisms in groundwater, cooperates with the microorganisms to degrade pollutants, and improves the removal efficiency of the pollutants and the persistence of the remediation effect.

The invention relates to the technical field of semiconductors, in particular to a high-precision acid-resistant photoresist and a preparation and use method thereof, and the high-precision acid-resistant photoresist comprises a first resin matrix, a second resin matrix, a solvent system, a photosensitizer, a functional auxiliary agent, a first auxiliary agent, a second auxiliary agent and a third auxiliary agent. According to the high-precision acid-resistant photoresist and the preparation and use methods thereof, by introducing trifluoromethyl styrene and utilizing the chemical stability of a C-F bond, it is ensured that a pattern is kept complete when the photoresist is soaked in hydrofluoric acid, so that the dark etching rate and the etching resistance are improved, meanwhile, the combination of linear phenolic resin and bisphenol A epoxy resin is designed, and the high-precision acid-resistant photoresist is prepared. The resistance to an acid solution is reserved, and interface bonding is enhanced; the hindered phenol antioxidant is added to solve the problem of oxidative degradation, the storage period of the photoresist is prolonged, the surface tension of a coating is reduced through the flatting agent, a chemical bonding bridge of the photoresist-silicon wafer is constructed by utilizing the coupling agent, and the o-quinonediazide photosensitizer is designed to reduce the line width deviation of a developed pattern.

To provide a method for producing recycled polyolefin film that can manufacture films in which oxidative degradation is suppressed without the addition of antioxidants. [Solution] The process includes manufacturing a polyolefin film by extrusion molding from pellet raw materials including virgin polyolefin pellets and non-melting recycled polyolefin pellets. A method for producing recycled polyolefin film, wherein the ratio (T2 / T1) shown in the following formula (1) is 0.8 or greater. T2 / T1···(1) [In formula (1), T1 represents the oxidation induction time measured under an oxygen atmosphere at 200°C in the state before pelletizing of non-melting recycled polyolefin pellets, and T2 represents the oxidation induction time measured under an oxygen atmosphere at 200°C for non-melting recycled polyolefin pellets.]

The invention discloses a controllable order reduction and targeted functional repair method of a waste reverse osmosis membrane, and relates to the technical field of recycling of waste reverse osmosis membranes. Comprising the following steps: immersing the waste reverse osmosis membrane into a compound oxidant solution for oxidative degradation to obtain a regenerated ultramicro filtration porous membrane; at 45-55 DEG C, immersing the regenerated ultramicro filtration porous membrane into a solution containing a first active amino group to obtain a targeted pre-activated porous membrane; the surface of the targeted pre-activated porous membrane is kept dry or wet, the targeted pre-activated porous membrane is immersed in a solution containing second active amido, cleaning is conducted after 5-15 min, and the target functionalized regenerated membrane is obtained. On the basis of a specific group at the damaged structure of the regenerated membrane, targeted positioning repair is performed on the damaged morphology and pore structure, functional groups are given to the surface of the membrane, the permeation selectivity and the anti-pollution performance of the membrane are improved, and the regenerated ultramicro filter membrane with excellent comprehensive performance is obtained.

The invention provides a method for degrading wastewater pollutants by an adsorption coupling advanced oxidation method, and the prepared composite membrane can adsorb dye in dye liquor, so that the dye in the dye liquor is enriched, and part of dye molecules are removed; meanwhile, metal ions in the composite membrane serve as catalytic active sites, free radicals with extremely high oxidability are generated on a reaction interface by catalyzing an oxidizing agent, dye molecules adsorbed by the composite membrane are subjected to oxidative degradation, and pollutants are removed. Compared with other powder type adsorbents, the fiber membrane is used as the carrier, the carrier can solve the problems that the powder type adsorbents are agglomerated and difficult to recycle, and the carrier can conduct strong interaction with a catalyst through surface functional groups to guide the transfer path of electrons, so that the catalytic oxidation activity is improved.

The invention relates to oxidative degradation equipment, in particular to organic pollutant catalytic oxidative degradation equipment, and belongs to the technical field of organic pollutant treatment.The organic pollutant catalytic oxidative degradation equipment comprises a degradation protection outer box, a transparent isolation frame is fixedly installed in the degradation protection outer box, and a precipitation separation frame is clamped to the upper end of the degradation protection outer box; a liquefaction drainage structure is fixedly mounted in the precipitation separation frame, a separation storage structure is slidably clamped to the lower side of the precipitation separation frame, an output connecting pipe is clamped to the upper end of the precipitation separation frame, and a spiral conveying pipe is fixedly mounted in the degradation protection outer box. Parts of beneficial materials are liquefied when degraded materials in the control device are output, the multiple precipitation separation frames are combined for use, mist precipitated from the interior of the raw materials can be screened, the recovery efficiency of a user on the beneficial materials is improved, the environment where the raw materials are located is flexibly adjusted through multiple environment control structures, and the recovery efficiency of the raw materials is improved. The convenience and the high efficiency of raw material degradation are improved.

The invention belongs to the technical field of crystal catalytic material preparation and pollutant degradation, and relates to a CoSe nanocrystalline catalytic material as well as a preparation method and application thereof. The chemical formula of the CoSe nanocrystal is CoSe, the CoSe nanocrystal is formed by assembling Co atoms and Se atoms through covalent bonds, the crystal size is concentrated at 5-20 nm, and Co exists in a mixed valence of + 2 / + 3. The nanocrystal is synthesized in situ through controllable pyrolysis and gas-phase selenylation by combining coordination self-assembly with in-situ phase engineering. The CoSe nanocrystalline material is used as a peroxymonosulfate (PMS) activation catalyst for oxidative degradation of tetracycline.

An oxidation resistant absorbent for capturing carbon dioxide from a gas stream. The oxidation resistant absorbent includes an alkanolamine with a weight percent in a range of 10 wt. % to 35 wt. % to a total amount of the oxidation resistant absorbent, a base with a weight percent in a range of 1 wt. % to 15 wt. % to a total amount of the oxidation resistant absorbent, a plurality of nanoparticles with a weight percent in a range of 0.1 wt. % to 3 wt. % to a total amount of the oxidation resistant absorbent, and water.

Provided is a water-soluble film that can balance water solubility and resistance to oxidative degradation. The water-soluble film of the present invention contains a polyvinyl alcohol resin, has a surface in which the proportion of carbonyl groups in the total carbon bonds obtained by X-ray photoelectron spectroscopy is 1 to 5% on at least one side, and has a total dissolution time in water at 10°C of 120 seconds or less.

The application provides an anti-aging and heat-resistant modified asphalt for road paving and belongs to the technical field of asphalt materials. The application realizes the improvement of anti-aging and high-temperature resistance through the synergistic effect of multiple components; the application constructs a network structure through the two-step reaction of vinyl silicon grafting and metallocene titanium hydrogenation with SBS as a base body, simultaneously introduces functional additives such as antioxidants and epoxy soybean oil, and forms a physical-chemical dual anti-aging mechanism. The application considers the key performance requirements such as high-temperature stability (SBS network), anti-ultraviolet aging (nano zinc oxide) and anti-oxidative degradation (phosphite) in the proportioning of components. The service life of road asphalt under high temperature is greatly prolonged.

This invention discloses a high-transparency FDM 3D printing-specific PLA toughening filament, comprising, by weight: 96.7% PLA 101; 3% ATBC; and 0.3% compound antioxidant; wherein the compound antioxidant is prepared by compounding antioxidant 1010 and antioxidant 168 in a 1:1 ratio. A method for preparing the high-transparency FDM 3D printing-specific PLA toughening filament includes the following steps: the raw materials are vacuum dried and then mixed uniformly at 60℃ for 4 hours, directly fed into a single-screw extruder, with five temperature control stages of 180℃ / 190℃ / 200℃ / 205℃ / 215℃, a take-up speed of 100m / min, cooling water temperature of 60℃ in the first stage and 50℃ in the second stage, online diameter adjustment, and winding to obtain a 1.75mm±0.05mm filament. The invention achieves the following results: the oxidative degradation rate of PLA molecular chains is reduced by more than 65%, the average spherulite size is ≤5μm, and the crystallinity is controlled at 18%; the light transmittance of the consumable is ≥92%, the haze is ≤1.5%, the yellowing index ΔE after 72h accelerated aging is ≤1.0, the elongation at break is ≥12% (while also considering toughness), the printed parts have a smooth, hazy surface, the interlayer shear strength is ≥3.2MPa, and the dimensional accuracy is stable, meeting the requirements of high transparency scenarios such as medical models and transparent shells.