51results about How to "Protect the environment" patented technology

This application discloses an ethylene oxide gas sensor and its method, which achieves self-diagnosis through electrochemical impedance spectroscopy, applies minute AC perturbations to collect data and extract aging feature vectors, and then dynamically determines the compensation factor, overcoming the limitations of traditional static calibration. In this way, the sensor can identify aging in real time and accurately compensate for the original signal, ensuring long-term accuracy and reliability of ethylene oxide concentration measurement throughout its entire life cycle, thus providing a solid guarantee for industrial safety and environmental protection.

This invention belongs to the field of headphone technology, and specifically relates to a quick-release structure for a headphone battery with elastic contact. It includes: a sound-generating unit with a mounting groove containing a receiver, and at least two inductive elements; and a battery unit with a conductive plate located inside the battery unit. By placing the conductive plate inside the battery unit, leakage caused by contact between the battery electrodes and the external environment is prevented. When the battery unit needs to be placed on the sound-generating unit, the receiver contacts the conductive plate, thereby establishing circuit continuity. This allows for easy assembly and disassembly of the battery unit and the headphone's sound-generating unit. During assembly, simply placing the battery unit on the sound-generating unit allows for automatic alignment and circuit connection through physical contact, eliminating the need for soldering, ribbon cables, or connectors, significantly reducing the difficulty and cost of automated assembly.

The utility model discloses a dust removal system with double dust removers, which belongs to the technical field of steel production and comprises a first dust remover and a second dust remover, inlet ends of the first dust remover and the second dust remover are communicated through a main pipeline, and a first dust removal pipeline is arranged on the main pipeline close to the side of the first dust remover in a communicated mode. The main pipeline close to the side of the second dust remover is communicated with a second dust removal pipeline, the dust removal end of the first dust removal pipeline is communicated to the first dust removal point, and the dust removal end of the second dust removal pipeline is communicated to the second dust removal point; a first change-over valve is arranged on the main pipeline between the first dust removal pipeline and the first dust remover, a second change-over valve is arranged on the main pipeline between the first dust removal pipeline and the second dust removal pipeline, and a third change-over valve is arranged on the main pipeline between the second dust removal pipeline and the second dust remover. According to the utility model, the dependence mode of the traditional single dust remover is broken through, and the environmental accident risk caused by fault, maintenance or shutdown of the single dust remover is effectively solved.

This invention discloses a cashew nut shell bisphenol and its preparation method and application. The preparation method of the bisphenol is as follows: First, cashew nut shell phenol, formaldehyde, and an alkaline catalyst are mixed and stirred evenly, and reacted at a certain temperature to obtain hydroxymethylated product A; product A is washed with water several times until the pH is neutral, and then centrifuged to remove water to obtain product B; product B is mixed with phenol and an acidic catalyst and stirred evenly, and reacted at a certain temperature to obtain product C after the phenol-alcohol reaction; product C is washed with water until neutral, and then distilled under reduced pressure to obtain the cashew nut shell bisphenol product. This invention utilizes the structural characteristics of cashew nut shell phenol, which has both a benzene ring and an alkane chain, to obtain a bisphenol structure that combines the rigidity of the benzene ring with the toughness of the long alkane chain on cashew nut shell phenol, while protecting the highly reactive phenolic hydroxyl group. Moreover, this bisphenol is green and low in toxicity, meeting the requirements of environmental protection and sustainable development. The epoxy coating prepared using this bisphenol has high crosslinking density, good corrosion resistance, and excellent mechanical properties.

The application provides a copper-aluminum dissimilar metal resistance brazing method for a wind power generator, comprising the following steps: S1, temperature field regulation of partition resistance heating: a partition resistance heating mode of double-electrode independent power supply is adopted, current is respectively input to the copper side and the aluminum side for independent control, and the brazing interface temperature is controlled in the range of 580-620 DEG C; S2, interface diffusion control of nano nickel barrier layer: a nano-crystalline nickel barrier layer is prepared in advance on the surface of the copper matrix to be connected; S3, wetting and filling of zinc-based composite filler material: zinc-based composite filler material is used for brazing; S4, pressure-assisted brazing seam densification: axial pressure in the range of 0.5-2 MPa is applied during brazing; S5, atmosphere protection and surface activation: the brazing process is carried out under the condition of inert protective atmosphere. Through the cooperation of partition heating and nano nickel barrier layer, the strength of the copper-aluminum brazed joint is improved to more than 80% of the base material, and the contact resistance is reduced to 3 mu omega cm 2 The energy consumption of the single piece is reduced by 80%, and the qualified rate reaches more than 95%.

The invention belongs to the field of galvanometer laser welding, and particularly relates to double-head quasi-synchronous laser welding equipment which comprises a rack and a displacement mechanism mounted at the top, and the displacement mechanism is used for adjusting different positions to weld workpieces; the welding mechanism is mounted on the displacement mechanism and is used for welding the workpiece; the first treatment mechanism is installed on the welding mechanism and used for blocking chippings generated during welding and meanwhile conducting cooling treatment on the edge and the front face of the galvanometer body; through air seal protection and rotary heat dissipation of the first processing mechanism, welding scraps and dust are intercepted, accumulated heat on the outer edge of the galvanometer body is rapidly guided out, and impurity attachment and lens thermal deformation are avoided; and the second treatment mechanism realizes removal of harmful substances and impact type cooling of the bottom surface of the galvanometer through purification, refrigeration and recovery of hot flue gas in a closed loop, so that the environment-friendly working environment is guaranteed, a heat dissipation system is formed by the second treatment mechanism and the first treatment mechanism, the thermal lens effect is effectively inhibited, and the service cycle of the galvanometer and core components is remarkably prolonged.

The utility model discloses a cathode structure of a semiconductor coating device, which belongs to the technical field of semiconductor coating and comprises a shell, a fixing block is arranged on the inner wall of the shell, a rear stand column is fixedly connected to the left side face of the fixing block, a hinge rod is arranged on the inner side of the rear stand column, and a front stand column is arranged on one side, away from the rear stand column, of the hinge rod. In the aspects of mechanical structure stability and flexibility, the rear stand column and the front stand column are arranged to serve as supporting parts, the fixing blocks are connected with the inner wall of the shell, a stable foundation is provided for the whole shielding and protecting structure, and shaking and displacement during working are prevented; the shielding baffle can be flexibly unfolded and contracted like a folding door, the shielding range is adjusted according to needs, and the hinge rod is unfolded in the non-working state to protect the cathode body and the target material body.

A highly efficient and environmentally friendly liquid metal degreasing agent and its preparation method are disclosed, belonging to the field of metal surface treatment technology. This degreasing agent is composed of a pH adjuster (a mixture of aminosulfonic acid and citric acid), a composite surfactant (a mixture of nonionic and anionic surfactants), a phosphorus-free chelating agent, a composite corrosion inhibitor, a defoamer, a detergent builder, and deionized water in specific weight proportions. The preparation method involves sequentially dissolving and mixing each component. This invention achieves highly efficient synergistic degreasing and rust removal under weakly acidic conditions. At room temperature, it provides excellent cleaning and corrosion protection for various metal substrates such as steel, aluminum alloys, and galvanized sheets. It is free of strong acids, phosphates, and heavy metals, making it environmentally friendly, safe, low-foaming, and stable. It is particularly suitable for automated spray production lines, comprehensively solving the problem of simultaneously achieving effective cleaning, substrate protection, and environmental protection requirements in existing technologies.

This utility model discloses a waste treatment device for isothiazolinone production, relating to the field of isothiazolinone production technology. The waste tank is connected to a first filter, the first filter is connected to a settling tank, the settling tank is connected to a distillation tank, the distillation tank is connected to a degradation tank, the degradation tank is connected to a sedimentation tank, the sedimentation tank is connected to a second filter, the second filter is connected to a nanofiltration membrane device, and the nanofiltration membrane device is connected to a treatment water tank. This device can effectively remove harmful substances from the isothiazolinone production waste, achieving harmless treatment of the waste and also realizing resource recycling to a certain extent, thus possessing good environmental and economic benefits.

The invention discloses a construction method for integration of an anti-static floor and a cable support of a secondary equipment room of a transformer substation, and relates to the field of transformer substation constructional engineering and electrical installation. Traditional construction has the problems of long construction period, different quality, poor operation environment and inconvenience in later debugging. The method comprises the following steps: measuring and typesetting on site, and setting an elevation control line and a division positioning line in an elastic manner; cleaning the terrace and laying a grounding cable led out from the main grounding grid in advance; the cable support is positioned and assembled according to the grid division positioning lines, the cable support is reliably connected with the grounding cable, and a groove box cross arm of the cable support is used for bearing the cable; and after the cable is laid, an anti-static floor is installed at the top of the cable support, and edge closing treatment is carried out. According to the method, on-site efficient assembly is achieved through the standardized and modularized construction process, the construction period is shortened, the quality is improved, and the operation and debugging environment is optimized.

This invention belongs to the field of marine engineering antifouling material technology and artificial intelligence optimization technology. It discloses a collaborative optimization method for the antifouling stability and safety of antifouling materials used in debris-blocking nets, comprising the following steps: Step 1, collecting multi-dimensional data and preparing samples of the antifouling materials for the debris-blocking nets; Step 2, constructing and training an AI prediction model: selecting key feature parameters from the multi-dimensional data, using these key feature parameters as core feature vectors to construct a dual-objective prediction model, which outputs predicted values ​​for the material's antifouling stability index and environmental safety index; Step 3, collaborative optimization under multiple constraints: setting multiple constraints for the material; using the hybrid meta-heuristic algorithm ALO-KHO to solve the multi-objective optimization problem; selecting the optimal solution from the Pareto optimal solution to obtain the parameter combination of the antifouling materials for the debris-blocking nets with the highest score. The prediction model of this invention has high accuracy, strong generalization ability, and significant multi-objective collaborative optimization effect.

The invention provides a waterborne polysilicon epoxy ceramic glaze all-purpose coating and a preparation method thereof. The waterborne polysilicon epoxy ceramic glaze all-purpose coating comprises the following components in percentage by mass: 30-50% of a basic resin system; 20-35% of a ceramic glaze functional filler; 10-20% of an auxiliary agent system; and the balance of deionized water. Wherein the base resin system is self-crosslinking type water-based poly-silicon epoxy resin, and is formed by copolymerization of an epoxy modified organic silicon intermediate and a water-based polyurethane dispersion; the ceramic glaze functional filler comprises nano silicon dioxide sol, zirconium silicate ceramic powder and montmorillonite nanosheets. According to the waterborne polysilicon epoxy ceramic glaze all-purpose coating and the preparation method, the preparation process is mature, raw materials are easy to obtain, large-scale production is easy, and the waterborne polysilicon epoxy ceramic glaze all-purpose coating has wide application prospects and remarkable industrialization value in the fields of buildings, industries, traffic, ocean engineering and the like.

The invention discloses a mining coal gangue / polyurethane / water glass composite filling material and a preparation method thereof, and belongs to the technical field of filling materials, the material is prepared by mixing a component A (water glass, glycerin and a catalyst), a component B (isophorone diisocyanate, polypropylene glycol and a plasticizer), coal gangue and fly ash according to a specific ratio, the preparation method comprises the following steps: respectively preparing the component A and the component B, mixing into slurry, and finally stirring and curing with the coal gangue and the fly ash. The curing time of the material is less than or equal to 124 s, the compressive strength is higher than 70 MPa, and the material is safe, environmentally friendly, free of secondary pollution, outstanding in flame retardance, capable of meeting the industrial standard and suitable for coal mine top-caving area filling, goaf gas plugging and crack air leakage channel plugging.

The utility model relates to the technical field of traction sheave, concretely is a kind of traction sheave with protective structure, including inner rim and outer rim, it is fixed with multiple connecting handles between inner rim and outer rim, the inside of inner rim is inserted with insert piece, and the inside of insert piece is embedded with protective structure, and protective structure is turned out after being extracted from insert piece and unfolding, and the protective structure of turning out wraps inner rim and outer rim;Beneficial effects are that: by the inner ring mouth of insert piece insertion inner rim, then the protective structure is extracted from insert piece and turned out, so that it wraps inner rim and outer rim;This protective mode can avoid that traction sheave is bumped by external object in the storage process, reduces surface damage, guarantees the structural integrity and transmission accuracy of traction sheave.

The utility model discloses vacuum defoaming and stirring equipment with a dust recovery function, which comprises a vacuum defoaming and stirring main body, a working bin is arranged on the vacuum defoaming and stirring main body, a support frame is fixedly arranged on the vacuum defoaming and stirring main body, an air cylinder is fixedly arranged on the support frame, the bottom end of the air cylinder is fixedly connected with an adsorption cover, and the adsorption cover is fixedly connected with the vacuum defoaming and stirring main body. The sealing cover is fixedly arranged on the adsorption cover, and the driving air cylinder is started to push the sealing cover to cover the top end of the working bin to form a sealing structure, so that dust and sundries are effectively prevented from leaking out, an ideal closed environment is created for subsequent cleaning work, and the safety and environmental friendliness of operation are guaranteed. After the draught fan is started, impurities such as dust and chippings remaining in the working bin can be rapidly collected into the dust accumulation bag by means of cooperation of the rubber air pipe and the adsorption cover, and preliminary deep cleaning is achieved. And in the process that the air cylinder is driven again to enable the sealing cover to descend, the adsorption cover descends synchronously, and the bottom of the working bin can be adsorbed more thoroughly.

The invention discloses a packaging device of clothes treating equipment. The packaging device comprises an inner packaging structure, and the inner packaging structure is arranged between the clothes processing equipment and a packaging box and at least comprises two of a supporting structure, a protection structure and a buffering structure. The supporting structure is made of a pressure-resistant degradable environment-friendly material and is used for supporting and fixing the equipment; the protection structure is made of an energy-absorbing degradable environment-friendly material and is used for preventing the equipment from being impacted and damaged in the transportation process; and the buffer structure is made of a wear-resistant degradable environment-friendly material and is used for further reducing the damage risk caused by friction and impact. The packaging device not only is environment-friendly and degradable, but also has good protection, buffering and supporting functions, and can effectively protect the safety of the clothes treatment equipment in the transportation and carrying processes.

The present application relates to electroplating water treatment technical field, specifically to a kind of new energy battery busbar's electroplating water treatment device, including support, sleeve mechanism, filter assembly, rotating mechanism, sealing cover and drive machine;The support is installed on ground, the sleeve mechanism is installed on support, transition cavity is opened in the inside of sleeve mechanism for the water that will be collected after processing is completed, then is discharged from drain outlet;The filter assembly is installed in the inside of sleeve mechanism, electroplating wastewater is filtered by filter material placed in filter groove filter plate and carries out preliminary filtration;The rotating mechanism is installed in the middle of sleeve mechanism, and the stirring fan blade in rotating mechanism drives electroplating wastewater to rotate, after centrifugal layering treatment, the water in the middle is passed through overflow port and enters sleeve mechanism;The sealing cover is installed on the top of sleeve mechanism;The drive machine is installed at the top of rotating mechanism, and the drive machine drives rotating mechanism to rotate or move up and down.

The invention relates to the technical field of refractory materials, in particular to a high-performance alkali-resistant and wear-resistant castable containing basalt cast stone and a preparation method thereof.The high-performance alkali-resistant and wear-resistant castable is prepared from, by mass, 65-80% of basalt cast stone with the particle size being 0-8 mm, 6-8% of high-alumina cement, 10-18% of mullite micro powder, 10-12% of silicon micro powder and 0.2-0.35% of efficient water reducing agent. The preparation method comprises the following steps: sequentially putting the raw materials into a stirrer for mixing, then adding 6.0-6.5% of water for stirring, obtaining mixed slurry after stirring, carrying out casting molding, then naturally curing, demolding, then putting into a curing box for curing, putting the cured finished product into a drying oven for drying, putting the dried finished product into a high-temperature electric furnace for firing, and naturally cooling after firing. The main crystal phase ordinary pyroxene in the basalt cast stone is high in chemical inertness and compact and stable in structure, so that the prepared high-strength alkali-resistant castable containing the basalt cast stone has the characteristics of excellent alkali resistance and abrasive resistance.

This invention relates to a conductive silver paste-specific glass powder for automotive rear window defroster lines, its preparation method, and its application. The glass powder comprises the following components in the indicated mass ratios: Bi₂O₃: 45-65%, SiO₂: 15-30%, B₂O₃: 5-12%, Al₂O₃: 1-5%, K₂O: 2-8%, Li₂O: 1-5%, CaO: 0.5-3%, and Sb₂O₃: 0.5-3%. It is processed according to the following steps: raw material selection, pretreatment, precise mixing, high-temperature melting, rapid water quenching, fine processing, and grading. Compared with existing technologies, this invention has advantages such as adaptability to high-temperature short-time sintering, high acid resistance, low sheet resistance, high welding strength, and high adhesion.

The utility model discloses an anti-termite self-repairing sustainable cable, which comprises a conductor, the outer wall of the conductor is coated with an insulating layer, the outer side of the insulating layer is provided with a filling layer and a wrapping tape layer, the filling layer is filled between the insulating layer and the wrapping tape layer, the wrapping tape layer is wound outside the filling layer, and the wrapping tape layer is wrapped outside the insulating layer. The outer side of the wrapping tape layer is provided with an inner protection layer, the outer side of the inner protection layer is provided with an armor layer, the outer side of the armor layer is provided with a fault monitoring layer, and the outer side of the fault monitoring layer is provided with an outer protection layer. The termite-proof performance is remarkably improved, the problems that a traditional cable is large in smell and harms human bodies during production and laying are solved, and the requirements of environmental protection and sustainable development are met; the fault monitoring layer is combined with the self-repairing anti-termite microcapsule technology, and monitoring, repairing, early warning and positioning can be realized, so that the maintenance cost is reduced.

The application relates to a high-concentration wastewater treatment device and method containing free ammonia and ammonium salt, and relates to the technical field of wastewater treatment. The method comprises the following steps: feeding wastewater into an MVR evaporation crystallization system for preheating, feeding the preheated wastewater into a forced circulation heater for heating to obtain a feed liquid with high solid content, and feeding the feed liquid with qualified solid content into a crystallizer for crystallization; feeding ammonia-containing condensate water into the top of a rectifying tower, performing vapor-liquid exchange heat transfer on the ammonia-containing condensate water in the rectifying tower; rectifying the ammonia-containing condensate water, and discharging the feed liquid in the rectifying tower through a kettle liquid pump when the ammonia content of the ammonia-containing condensate water is less than a certain value. When the feed liquid in the rectifying tower is discharged, only a trace amount of ammonia is contained, and the ammonia-containing condensate water is less harmful when recycled.

This invention belongs to the technical field of smoked food processing equipment, specifically a smoking chamber for producing cured meat. It includes a modular house, a wood-fired stove installed outside the modular house, and a smoke exhaust and air intake device installed inside the modular house. The modular house includes a roof sealing panel, wall sealing panels, an insulated floor, and a modular beam. The roof sealing panel, wall sealing panels, and insulated floor are installed on the modular beam and assembled using hinges to form a sealed chamber. An installation cavity is reserved in the roof section. A suspension rod is installed inside the modular beam. A chimney is located behind the wood-fired stove and connected to a smoke guide pipe. A smoke guide valve is installed near the chimney on the smoke guide pipe. This solution uses a fully sealed modular structure combined with heat-insulating and flame-retardant panels, and with the wood-fired stove's smoke supply mode, reduces firewood costs. The incense plate of the spray device can be flexibly replaced with different incense materials to achieve various flavor combinations. Furthermore, the differentiated negative pressure smoke distribution design ensures complete smoke coverage, resulting in even coloring and a richer flavor in the cured meat.

The utility model provides a detachable constructional column concrete pouring device which comprises a constructional column formwork, a hopper and a knife-shaped baffle, a material conveying opening is formed in the side end of the hopper, the material conveying opening corresponds to a feeding opening in the constructional column formwork, and slurry can be conveyed to the feeding opening; the knife-shaped baffle is movably arranged at the material conveying opening and can cut off part or all of a channel between the material conveying opening and the feeding opening. Through the arrangement of the knife-shaped baffle plate, the extra cost and time consumption caused by chiseling and repairing in the traditional process are reduced, the influence of the chiseling and repairing link on the appearance quality is reduced, the construction progress is accelerated, the generation of waste concrete and repairing materials is reduced, and the requirements of environmental protection and sustainable development are met; through the double fixing effects of the anchoring nails and the U-shaped hoops, the connecting stability of the hopper and the constructional column formwork can be improved, the quality defect caused by instability of the formwork or the hopper is avoided, and the construction quality is improved.

This invention discloses a method for the electrothermal degradation of waste fluoroplastics and the recovery of inorganic fluoride salts. Waste fluoroplastics are mixed with a mineralizing agent and a conductive additive. The high temperature generated instantaneously by a pulsed current induces a rapid mineralization reaction in the fluoroplastics, achieving the conversion and recovery of fluorine into inorganic fluoride salts. Simultaneously, carbon is converted into high-value-added carbon materials, ultimately turning fluoroplastic waste into valuable resources.

This utility model discloses an easy-to-operate, energy-saving and consumption-reducing blast furnace, relating to the field of metallurgical engineering technology. It includes a furnace body, with a charging box fixedly connected to the outside of the furnace body. A driving assembly is installed on the inner wall of the charging box, and a rotating shaft is fixedly connected to the outside of the driving assembly. A limiting block is slidably connected to the inner wall of the charging box, and a moving plate is fixedly connected to the outside of the limiting block. The rotating shaft is slidably connected to the inner wall of the moving plate, and a charging plate is fixedly connected to the outside of the moving plate. The driving assembly includes a motor, which is externally mounted on the inner wall of the charging box. In this utility model, the rotation of the disc drives the rotating shaft to rotate around the center of the disc, so that the positional change of the rotating shaft can push the position of the moving plate to move along a fixed trajectory, and the positional change of the moving plate can drive the charging plate to move synchronously.

The utility model relates to the field of cleaning solution filtering and recycling, in particular to a cleaning solution circulating filtering and precipitating and waste residue recycling device which comprises a filtering and precipitating water tank and a cleaning pool and comprises a first water inlet, n (n is larger than or equal to 1) filtering parts are sequentially arranged at the output end of the first water inlet from top to bottom, and precipitating parts are arranged at the output ends of the filtering parts. A bottom-layer water storage part is arranged at the bottom of the filtering and precipitating water tank, a first water outlet is formed in the bottom-layer water storage part, and the first water outlet is connected with a water pump through a pipeline; the cleaning water tank comprises a second water inlet and a second water outlet; wherein the first water inlet is connected with the second water outlet, and the output end of the water pump is connected with the second water inlet, so that the filtering and settling water tank and the cleaning pool form circulation. The filtering, the precipitation and the recycling of the cleaning liquid are realized.

The utility model discloses a corrugated board measuring and cutting device which comprises a machining table, a damping mechanism is arranged on the lower side of the machining table, a fixing mechanism is arranged on the upper side of the machining table, telescopic rods are fixedly connected to the two ends of the upper side of the machining table respectively, and connecting bases are fixedly connected to the ends of the two telescopic rods. And a moving mechanism is arranged on the inner side of the connecting base, an empty groove is formed in the machining table, four supporting lugs are connected to the lower side of the machining table through bolts, a waste chip collecting box is fixedly connected to the inner sides of the four supporting lugs, and the waste chip collecting box is located on the lower side of the empty groove. Compared with the prior art, the corrugated board measuring and cutting device has the advantages that sweeps can be conveniently cleaned, and the damping function is achieved.

This invention relates to the field of enameled wire production technology, and more particularly to an insulating varnish and enameled wire based on nanocomposite materials. The insulating varnish comprises the following components by weight percentage: polyester resin: 40-60%, amide-imide resin: 15-25%, xylene: 10-25%, N-methylpyrrolidone: 5-15%, nano-silica: 1.0-5.0%, nano-alumina: 0.5-2.0%, fluorinated surfactant: 0.5-2.5%, epoxy resin tackifier: 0.2-2.0%, antioxidant: 0.2-0.5%, and ultraviolet absorber: 0.1-0.5%. This invention significantly improves the mechanical strength, abrasion resistance, and heat resistance of the varnish layer by introducing nano-silica and nano-alumina; improves the wettability and adhesion of the varnish by adding fluorinated surfactant; and enhances the adhesion and durability of the varnish layer by using epoxy resin tackifier.

The invention relates to the technical field of paper product processing, and discloses fiber toughening type antibacterial ecological paper and a preparation method thereof.The fiber toughening type antibacterial ecological paper is prepared from mixed plant paper pulp, sulfydryl modified chitosan fibers, modified cellulose and a crosslinking initiator, and the preparation method includes the steps that S1, the plant paper pulp is pulped and then mixed with other components to obtain uniform pulp; s2, diluting the pulp, performing papermaking forming, and dehydrating to obtain a wet paper web; s3, squeezing and pre-drying the wet paper web; s4, carrying out click cross-linking reaction among the fibers by adopting ultraviolet irradiation; s5, drying the cross-linked paper web with hot air to obtain finished paper, ultraviolet light initiates click chemical reaction of sulfydryl and carbon-carbon double bonds, a cross-linked network is formed among fibers, accordingly, the mechanical strength and antibacterial durability of the paper are improved, the raw materials are environmentally friendly and degradable, and effective combination of performance and sustainability is achieved.

This invention relates to a memristor based on ball milling for the preparation of lead-free inorganic perovskite quantum dots and its preparation method, belonging to the technical field of lead-free inorganic perovskite-based non-volatile storage and neuromorphic computing devices. This invention employs a green solid-state ball milling method to prepare lead-free inorganic perovskite quantum dots, addressing the industry pain points of high toxicity, poor environmental stability, and reliance on high-temperature organic solvents in quantum dot synthesis of traditional lead-containing perovskites. Through a two-step ball milling process, controllable quantum dot size (5~20 nm) and high dispersibility are achieved. Combined with spin coating, low-temperature annealing, and vacuum evaporation of the top electrode, a sandwich structure memristor of "conductive substrate / quantum dot film / top electrode" is constructed. This invention achieves lead-free, highly stable, low-operating-voltage memristor output with an on / off ratio of 10. 3 It can simulate the behavior of neural synapses; the process involves no high-temperature heat injection, is low in toxicity, and can be mass-produced at the gram level. It is compatible with flexible electronics and large-area fabrication, and is suitable for low-power neuromorphic computing, artificial synapses, flexible storage and other scenarios.