348 results about "Ultrasonic assisted" patented technology

The invention belongs to the technical field of additive manufacturing, and particularly relates to a strong electromagnetic pulse-ultrasonic auxiliary electric arc additive manufacturing platform. The platform body is provided with an upper substrate used for providing an initial plane for electric arc additive manufacturing; the water cooling device comprises a water cooling box used for containing cooling water, and the substrate is contained in the water cooling box; the base plate locking clamp comprises a positioning clamping table and a clamping device. The positioning clamping table and the clamping device are arranged on the two sides of the upper base plate and matched to form a fixing structure for fixing the relative positions of the upper base plate and the platform body. The welding gun head is connected with the six-axis mechanical arm and is used for carrying out additive manufacturing on the upper substrate; the clamping device and the welding gun head are arranged on the two opposite sides of the upper base plate in a spaced mode. And the clamping device is partially arranged outside the water cooling box. The clamping device and the welding gun head are arranged on the two sides of the water cooling box respectively, space interference between the clamping device and the welding gun head in the working process can be effectively avoided, meanwhile, a principle heat source of the clamping device can be guaranteed, and normal work of the clamping device is guaranteed.

The invention discloses a PVDC (polyvinyl dichloride) coating high-brightness BOPP (biaxially-oriented polypropylene) cigarette film and a preparation method thereof, and belongs to the technical field of packaging materials. The smoke film comprises a BOPP (biaxially-oriented polypropylene) base material layer and three layers of gradient PVDC (polyvinyl dichloride) coatings coated on the surface of the BOPP base material layer, wherein the three layers of gradient PVDC coatings sequentially comprise a bottom adhesive layer, a middle barrier layer and a surface functional layer from bottom to top. The bottom adhesive layer adopts PVDC emulsion and an organic silane coupling agent KH-560, so that the binding force with a base material is enhanced; the middle barrier layer adopts high-molecular-weight PVDC and nano silicon dioxide to form a maze effect to provide main barrier performance; and the surface functional layer adopts PVDC, an acrylate copolymer and an antistatic agent, so that the glossiness and the processability are improved. The preparation method adopts an ultrasonic-assisted coating technology, an electrostatic field-assisted leveling technology, a four-stage drying technology and a dynamic tension compensation technology. The prepared product coating is uniform, compact and free of defects, the oxygen permeability is as low as 4.8-9.2 cubic centimeters per square meter per 24 hours per standard atmospheric pressure, the glossiness reaches 86-95 GU, a traditional double-layer packaging structure can be directly replaced, and the cost is reduced by 20% or above.

The invention relates to the technical field of barium chloride production and preparation, in particular to a purification method of electronic-grade barium chloride, which comprises the following steps: S1, washing witherite tailing barium slag with hydrochloric acid to obtain barium-containing filter residue; s2, mixing the barium-containing filter residues with hydrochloric acid, and performing leaching treatment to obtain a crude barium chloride product; s3, dispersing the barium chloride crude product in water, adjusting the pH value of the solution, adding an impurity removal agent, carrying out ultrasonic-assisted segmented temperature control treatment, and filtering to obtain a barium chloride solution; and S4, adding a crystal form control agent into the barium chloride solution, and performing programmed cooling crystallization under the action of a low-intensity direct-current electric field to obtain the electronic-grade barium chloride. According to the technical scheme, efficient conversion and precise impurity separation of the barium slag difficult to treat are achieved, the technical problems that in a traditional method, the barium recovery rate is low, impurity removal is difficult, and the product purity is unstable are solved, and the resource utilization rate of barium is remarkably increased.

The invention discloses a device for ultrasonic-assisted additive manufacturing of a metal workpiece, and relates to the field of laser additive manufacturing, the device comprises a circular base plate, a plurality of transducers, a synchronous stretching mechanism, a supporting box, a vibration isolation mechanism, a bearing air cylinder, a first driving motor and an ultrasonic generator, the supporting box is rotationally installed on the vibration isolation mechanism, the first driving motor is used for driving the supporting box and the circular base plate fixed to the supporting box to rotate, and the bearing air cylinder is installed on the equipment base and located on the inner side of the vibration isolation mechanism. The piston end of the bearing air cylinder penetrates through the supporting box and then is connected with the synchronous stretching mechanism through a thrust bearing, the energy converter is installed at the movable end of the synchronous stretching mechanism through a floating constant force connector, and the energy converter is connected with an ultrasonic generator through a high-frequency coaxial cable. The mechanical property of the annular rotary part during laser additive manufacturing can be improved by synchronously changing the position of the transducer.

The invention discloses aerogel thermal-insulation waterproof mortar and a preparation method thereof. The mortar is prepared from cement, hydrophobic aerogel, interface modified asphalt rubber powder, a composite phase change heat conduction material, blast furnace slag micro powder, silica fume, nano montmorillonite, titanium dioxide aerogel powder, expanded vermiculite, shape memory polymer emulsion, chitosan, charcoal powder, carbon fibers, basalt fibers and the like. The preparation method comprises the following steps: carrying out plasma treatment and modification with an organosilicon waterproofing agent to obtain hydrophobic aerogel; carrying out interface modification on the asphalt rubber powder by adopting a titanate coupling agent; a phase change microcapsule-carbon nanotube heat conduction network is constructed through ball milling compounding; a basic framework is formed by adopting a graded mixing process, and then functional components are introduced; and finally, realizing cross-linking curing of the shape memory polymer and the chitosan through ultrasonic assistance and programmed temperature control. The mortar prepared by the invention realizes integration of multiple functions, and effectively solves the technical problems of single performance and poor durability of a traditional thermal insulation material.

The invention discloses a preparation method and application of a blueberry anthocyanin extract, and belongs to the technical field of natural product extraction. The preparation method comprises the following steps: mixing blueberry pomace powder and water according to a solid-liquid ratio of 1: (10-50), exhausting, performing ultrasonic-assisted extraction, adding hemicellulase accounting for 0.6-1.4% of the mass of the pomace powder, extracting at 40-60 DEG C for 1-4 hours, and finally centrifuging to obtain a blueberry anthocyanin extracting solution. According to the method, the blueberry pomace is cooperatively treated by ultrasonic waves and hemicellulase, so that the defects of low efficiency and easy degradation of anthocyanin in a traditional extraction method are overcome, and the method has the outstanding advantages of high extraction rate, good activity maintenance and green and environment-friendly process. The obtained extract shows excellent DPPH and ABTS < + > free radical scavenging ability, and can be widely applied to functional food, health care products and cosmetics as a natural antioxidant.

The invention discloses a polyetherketoneketone fiber anti-adhesion porous spinning method. The method comprises the following steps: dissolving polyetherketoneketone to obtain a spinning solution, and extruding the spinning solution through a porous spinneret plate to form a plurality of spinning trickles; the trickles enter a first coagulating bath to be preliminarily coagulated and formed, and fibers are obtained; dividing the fibers by a split type dividing plate, guiding the fibers into a second coagulating bath by a godet, washing with water, applying oil, and then drying; fibers enter the hot drafting device to be subjected to multi-stage hot drafting, and after heat setting, the fibers are tidied and wound by the buncher. The first coagulating bath is provided with a bath lotion supplementing unit, a circulating filtering system and an ultrasonic generator which are combined to quickly and uniformly update components of the coagulating bath; and the split type filament separating plate keeps a distance between fibers, prevents mutual adhesion and improves the double-diffusion efficiency in the second coagulating bath. The ultrasonic-assisted circulating filtration system is used for updating the synergistic effect of the coagulating bath and the split type filament separating plate, so that the problems that fibers are easy to adhere and are uneven in evenness and performance are effectively solved.

The application discloses a biological enzyme degreasing treatment method for reducing down feather peculiar smell, which comprises the following steps: raw material down feather pre-finishing, pre-wetting, pulse negative pressure penetration, controlled protease pretreatment, lipase deep degreasing, intermittent low-energy ultrasonic assisted migration, warm water rinsing, cyclodextrin inclusion peculiar smell, weak acid recovery, limited fat supplementing and dehydration low-temperature drying. The application discharges the air in the down feather through pulse negative pressure and promotes the treatment liquid to enter the deep layer of the down feather, improves the contact ability of the lipase and the residual lipid through the protease pretreatment, promotes the oil hydrolysis and migration through the lipase and low-energy ultrasonic, and reduces the residual fat and the aftertaste risk through the cyclodextrin inclusion of volatile peculiar smell substances such as fatty acids, aldehydes and ketones, the weak acid recovery and the fat supplementing treatment, reduces the damage of strong alkali washing to the down feather, maintains the down feather fluffiness, softness and fiber integrity, and is suitable for industrial degreasing and peculiar smell removing treatment of the down feather.

The utility model discloses a viscous protein filtering device, which relates to the technical field of egg liquid filtering and comprises a shell, a feed port, a waste outlet, a discharge port, a primary filter element assembly, a rotary filtering assembly, a cooling liquid circulating device, a buffer cavity, a graded filter element assembly, an ultrasonic-assisted filtering device and the like. Through the synergistic effect of multi-stage filtering devices of the first-stage filter element assembly, the rotary filtering assembly and the grading filter element assembly, large impurities are rapidly treated in the rough filtering stage, overload of the fine filtering assembly is avoided, step-by-step fine filtering is achieved, the problem of low efficiency caused by direct treatment of viscous materials through a single-stage high-precision filter membrane is solved, and the working efficiency is improved. A rotating shaft in the rotary filtering assembly rotates at a high speed to generate centrifugal force, spiral guide blades synchronously rotate along with the rotating shaft to form spiral downward fluid motion, the centrifugal force pushes liquid to be rapidly filtered, the spiral blades synchronously stir to avoid local impurity accumulation, dynamic filtering and instant cleaning circulation are formed, and the filter element blocking period is delayed.

The invention provides a meat preservation method with self-assembled nanoparticles cooperating with a three-layer controlled release film. The method comprises the following steps: S1, selecting fresh meat, removing impurities, cleaning, detecting the muscle fiber density and the total number of initial bacterial colonies, classifying the meat into I / II / III classes according to the standard, and pre-cooling and discharging acid for 18-24 hours under the conditions that the temperature is 0-2 DEG C, the air speed is 0.3-0.5 m / s and the humidity is 85-90%; s2.2, graded loading of dormant-state self-assembled nanoparticles at the temperature of 2-4 DEG C, I-type dip coating, II-type ultrasonic-assisted dip coating, III-type high-pressure atomization spraying and air drying in a blast environment after loading; s3, filling three layers of controlled release films, vacuumizing to-0.095 to-0.09 MPa, keeping for 20 seconds, filling customized controlled atmosphere according to grades, and then performing heat sealing; and S4.0, refrigerating at 0-4 DEG C. By constructing a synergistic mechanism that the self-assembled nano-particle adsorption layer recognizes a decay signal in a close range and the three layers of controlled release films release drugs in a linkage mode and strengthen barrier, the limitation that traditional preservation is passively inhibited and active ingredients are lost quickly is broken through, and the technical problems that bacteriostasis is not lasting, the water-retaining property is poor and sensory quality is prone to deterioration are fundamentally solved; and the fresh-keeping efficiency and the meat quality are both improved.

The invention discloses a plate bending test device based on ultrasonic vibration assistance, which can be specially used for researching a forming mechanism of a rebound phenomenon after ultrasonic-assisted forming by accurately controlling ultrasonic vibration parameters and a bending loading process. An experimental platform and theoretical support are provided for solving the rebound problem and further improving the ultrasonic vibration auxiliary stamping forming precision. During testing, the material testing machine drives the upper bracket and the stamping female die to move downwards through the upper chuck, and by means of rigid connection between the transducer fixing cylinder and the lower bracket, precise butt joint between the amplitude-change pole and the stamping male die and alignment design of the upper bracket and the lower bracket, it is ensured that the stamping male die and the female die are kept coaxial in the closing process; and finally, a plate bending test is completed under the assistance of ultrasonic vibration.

The invention discloses a pogostemon cablin essential oil clathrate compound preparation device, and relates to the technical field of medicine preparation, the pogostemon cablin essential oil clathrate compound preparation device comprises a kettle body, the bottom of the kettle body is an arc-shaped lower sealing head structure; the flow guide cone is arranged in the center of the bottom of the kettle body, and baffles are vertically arranged on the inner wall of the kettle body in a circumferential array mode; the stirring assembly is arranged in the kettle body, and the stirring assembly is used for being matched with the flow guide cone and the baffle and is used for guiding liquid in the kettle body to circularly flow up and down; the outer circulation high-shearing assembly comprises a high-speed shearing device, a suction inlet assembly is arranged at the side bottom of the kettle body and communicated with a feeding port of the high-speed shearing device, and a backflow port is formed in the side wall of the kettle body and communicated with a discharging port of the high-speed shearing device; an outer circulation passage is formed between the kettle body and the high-speed shearing device; the ultrasonic-assisted assembly is arranged near the suction inlet assembly; and the essential oil injection pipe is arranged in the flow guide cone.

The invention relates to a rapid outburst elimination system for cross-cut coal uncovering. The rapid outburst elimination system comprises an extraction pipe, an injection pipe and an ultrasonic transducer which are arranged in a drill hole. The outer end of the injection pipe is connected with a gas injection stop valve, a pressure pump, a heater and a carbon dioxide storage tank through an injection pipeline, a four-way valve is arranged on the injection pipeline between the injection pipe and the gas injection stop valve, and the four-way valve is connected with a temperature sensor and a gas injection pressure gauge; the outer end of the extraction pipe is connected with a heat exchanger, a gas separation tower, a pressure adjusting device and an extract separation tower through an extraction pipeline; the upper end of the extract separation tower is connected with a carbon dioxide storage tank through a circulating pipeline; and the outer end of the ultrasonic transducer is electrically connected with the ultrasonic generator. According to the ultrasonic-assisted supercritical carbon dioxide cyclic extraction anti-reflection technology, organic matters in the coal seam can be extracted through supercritical carbon dioxide, so that the permeability of the coal seam is improved, and the technology is reasonable in structure, simple in device, convenient to implement, safe and reliable.

The invention relates to a preparation method of peppermint essence, which solves the problems of quick volatilization and poor durability of the traditional peppermint essence by optimizing the combination of essence components and a slow-release carrier by adopting a multi-layer microcapsule slow-release technology and a nanocapsule technology. According to the method, essence components such as menthol, menthone and leaf isovalerate are mixed with at least two layers of microcapsules, the outer layer microcapsules slowly release fragrance, the inner layer microcapsules quickly release fragrance, and it is ensured that the fragrance is kept for a long time in the using process. Meanwhile, the essence is uniformly dispersed in different carrier systems through ultrasonic-assisted emulsification by adopting a nanocapsule technology, so that the stability and dispersity of the essence are improved. In addition, the temperature-responsive and pH-responsive polymer materials are introduced, so that the release rate of the essence can be adjusted according to the external environment, and the adaptability of the essence is further enhanced.

This invention discloses an optimized extraction and purification process for total flavonoids from Hypericum perforatum and its application in photodamage protection. Belonging to the field of natural product extraction technology, the process includes the following steps: using Hypericum perforatum powder as raw material, ultrasonic-assisted extraction is performed, followed by centrifugation, collection of the supernatant, and repeated extraction of the residue twice. The supernatants are combined to obtain a total flavonoid extract from Hypericum perforatum. The extract is then purified by adsorption using a macroporous adsorption resin, and the eluent is collected, concentrated, and dried to obtain high-purity total flavonoids from Hypericum perforatum. This invention features a stable process, high extraction efficiency, and is environmentally friendly, making it suitable for industrial production. The prepared total flavonoids from Hypericum perforatum exhibit high purity and significant antioxidant and photoprotective effects, and can be widely used in antioxidant, skin protection, and sunscreen products.

The invention belongs to the technical field of mineral processing and metallurgical engineering, and particularly relates to a method for extracting lithium from spodumene by acid leaching through microwave and ultrasonic wave synergistic enhancement. The method comprises the following steps: taking beta-spodumene as a raw material, grinding the beta-spodumene, mixing the grinded beta-spodumene with concentrated sulfuric acid and phosphoric acid, carrying out rapid sulfating roasting under microwave heating, placing the obtained roasted clinker in a persulfate solution, and carrying out short-time water leaching under the assistance of ultrasonic waves to realize efficient leaching of lithium. Wherein the dissolution of impurities such as iron and aluminum can be selectively inhibited by adding phosphoric acid, and the mass transfer barrier of lithium ion dissolution can be effectively destroyed by the cooperation of persulfate and the ultrasonic cavitation effect. According to the method, water leaching can be completed within 2-5 minutes, the lithium leaching rate exceeds 97%, the impurity content is low, energy consumption and acid consumption are small, and the method is suitable for continuous clean production.

The invention discloses an ultrasonic-assisted positioning lithotripsy device and a method thereof, and relates to the technical field of positioning lithotripsy. According to the ultrasonic-assisted positioning lithotripsy device and method, the movable assembly controls the ultrasonic probe to conduct ultrasonic detection on the front face and the back face of a patient, the position of a calculus is determined in an auxiliary mode, and the position of the patient does not need to be adjusted after the patient lies flat in a two-way detection mode; particularly, the problem that a patient feels uncomfortable due to the fact that the patient needs to adjust the body position in cooperation with traditional auxiliary positioning equipment is solved on the equipment, particularly, after a calculus patient has an adaptive symptom, the patient feels serious uncomfortable when the body position is adjusted, and the patient with a large body type can be detected in a two-way mode as well. And the position of the detection probe is adjusted according to the body type of the patient so as to be matched with the body type of the patient, so that the detection efficiency of the detection probe is further improved.

The application discloses a surface treatment process of an aluminum alloy profile and belongs to the technical field of aluminum alloy processing. The aluminum alloy profile is immersed into an oil removal cleaning solution, and the pretreatment of the aluminum alloy profile is completed under the assistance of ultrasonic waves. The pretreated aluminum alloy profile is used as an anode, and anodic oxidation treatment is carried out under the assistance of ultrasonic waves and constant voltage. The anodic oxidation treatment is stopped when particles are generated in an electrolyte through a liquid particle counting system. The aluminum alloy profile after the anodic oxidation treatment and cleaning is used as a cathode to carry out electrophoretic treatment. Then, the cathode is taken out and washed with clean water for 3-5 times. After being dried at room temperature, the aluminum alloy profile is dried at 140 DEG C for 30 min, and the electrophoretic coating is completed. Fluorine atoms are introduced into the electrophoretic paint during preparation, which is helpful to increase the corrosion resistance and wear resistance of the paint film. The liquid particle counting system is used for monitoring during the anodic oxidation treatment, so that the anodic oxidation is prevented from being excessive, and the paint film with better adhesion and smoothness is formed.

The application relates to the technical field of waste resource utilization and environment functional material preparation, and specifically discloses a preparation method of a manganese oxide loaded copper residue based persulfate hydrogen salt activator. The activator is prepared by taking copper pyrogenic smelting waste residue as a main carrier, taking manganese sulfate monohydrate as a manganese source, and additionally taking ammonium chloride and ammonia water. The preparation method comprises the following steps: grinding the copper residue, mixing and dispersing the copper residue with a precursor solution, carrying out intermittent ultrasonic assisted high-energy ball milling, in-situ precipitation, gradient flow aeration oxidation, magnetic sedimentation washing and vacuum low-temperature drying to obtain the finished product. The activator can be used for degrading tetracycline, phenol and bisphenol A type refractory organic wastewater. The active component is firmly combined with the carrier, the catalytic activity is high, the recycling stability is good, and the heavy metal leaching amount is low. The preparation method is simple in process and mild in condition, realizes high-value utilization of copper residue solid waste, is low in preparation cost, and is easy to realize large-scale production.

The invention discloses a preparation method and application of an organic acid and polyethylene glycol modified sodium-based beta-cyclodextrin metal organic framework, and belongs to the technical field of metal organic framework materials (MOF). The method comprises the following steps: firstly, preparing a Na-beta-CD-MOF (Na-beta-CD-MOF) by utilizing a methanol steam diffusion method or an ultrasonic-assisted synthesis method, and then carrying out crosslinking modification on the Na-beta-CD-MOF, organic acid (such as dibasic acid or tribasic acid as citric acid and malic acid) and polyethylene glycol (the molecular weight is 200-50000); the water stability, the pore structure and the adsorption performance on antibiotics and dye pollutants are obviously improved. The prepared organic acid and polyethylene glycol modified sodium-based beta-cyclodextrin metal organic framework has good biocompatibility and chemical stability, more adsorption sites are introduced, and pollutants such as ciprofloxacin hydrochloride, tetracycline hydrochloride and Congo red in wastewater can be efficiently removed. The method is green, environment-friendly, low in cost and simple and convenient to operate, and has a wide industrial application prospect.

The application belongs to the field of aluminum-based composite materials, and particularly relates to a kind of additive manufacturing high-performance aluminum-titanium metal composite material and a preparation method thereof. Micron-sized aluminum alloy powder and micron-sized titanium alloy powder are mixed uniformly by ultrasonic-assisted water bath stirring method for laser powder bed melting, wherein the mass fraction of the aluminum alloy powder and the titanium alloy powder is 85-98 wt.% and 2-15 wt.% respectively. The micron-sized titanium alloy powder is used to promote the formation of multi-scale layered structure of equiaxed crystal, core-shell structure, cellular substructure and nano precipitate phase, so as to simultaneously improve the strength and plasticity of the material and realize isotropic mechanical properties. The aluminum alloy-titanium metal composite material for additive manufacturing disclosed by the application has simple and easy-to-control process and low cost, and can be suitable for large-scale production.

This invention discloses an ultrasonic-assisted water-guided laser drilling device and method based on flow focusing, belonging to the field of water-guided laser processing technology. The device includes an optical path control module, an optical-liquid-gas coupling module, an ultrasonic assistance module, and a movement module. It employs a laser energy control method that uses in-situ monitoring and real-time adjustment during laser processing. A uniform laminar water jet is obtained through a multi-channel, distributed high-pressure water path design, and the coupling energy beam is controlled using flow-focused water-guided laser beam refinement technology. Ultrasonic vibration-assisted processing further improves the drilling quality. In summary, this invention can be used for the precision machining of hole structures in aerospace components, improving machining quality and thus enhancing the overall service performance of equipment.

The invention relates to the field of injection molding, in particular to an ultrasonic-assisted micro injection molding device. An ultrasonic-assisted micro injection molding device comprises a rack, a power unit connected to the rack and the like, the power unit is connected with a movable mold, the rack is fixedly connected with a fixed mold, the fixed mold and the movable mold are closed to form a cavity for injection molding, and the power unit is used for driving the movable mold to move and enabling the movable mold to be in contact fit with the fixed mold. The rack is connected with a material conveying unit, the material conveying unit is connected with an ultrasonic sleeve, and the rack is provided with an ultrasonic generator. Ultrasonic assistance is applied to the material conveying pipe through the ultrasonic sleeve, ultrasonic waves penetrate through the material conveying pipe to act on molten materials in an indirect energy transfer mode, the molten materials are uniform in component through the ultrasonic waves, plastic particles are fully molten in cooperation with the primary heating sleeve and the secondary heating sleeve, the strength and surface smoothness of a formed part are improved, and the product quality is improved. The plasticizing quality is ensured.

The invention discloses a processing method for obtaining a fused quartz optical element with low surface metal impurity content, which sequentially comprises the steps of blank cutting, milling and grinding forming, laser pretreatment, fine grinding, rough polishing, acid pickling, two times of fine polishing and ion beam fine trimming. A silicon dioxide polishing solution is adopted for carrying out metal-pollution-free polishing, ultrasonic-assisted pickling is used for deeply removing metal impurities, and through the synergistic effect of zero-pressure fine polishing and non-contact ion beam fine trimming, the surface damage layer is finally removed, the surface shape precision is controlled, meanwhile, the content of the surface metal impurities is reduced to the ppb level, and the surface quality is improved. Particularly, the cerium element content is reduced by more than 90%, and an ultra-smooth surface with root-mean-square roughness superior to 0.5 nm is obtained. The method solves the technical problem that low surface roughness and low metal impurity content are difficult to consider in the traditional process, and is suitable for batch and stable manufacturing of high-end optical elements.

The invention discloses a manufacturing method of suede artificial leather with excellent flame retardance, and relates to the technical field of artificial leather manufacturing, the manufacturing method comprises the following steps: S1, base material preparation: providing a superfine fiber non-woven fabric base material; s2, preparation of a flame-retardant polyurethane impregnation liquid: mixing polyurethane resin, an organic solvent, a composite flame retardant and an auxiliary agent to form a uniform impregnation liquid; the composite flame retardant is formed by compounding an intumescent phosphorus-nitrogen flame retardant and a metal oxide catalyst; s3, ultrasonic-assisted impregnation: the superfine fiber non-woven fabric base material impregnated in the flame-retardant polyurethane impregnation liquid is placed in an ultrasonic field (the frequency is 20-40 kHz) to be treated for 1-5 minutes; and S4, solidification: putting the impregnated base material subjected to ultrasonic treatment into a coagulating bath, and solidifying the polyurethane to form impregnated grey cloth. According to the manufacturing method, through an ultrasonic-assisted impregnation and three-dimensional synergistic flame-retardant system, the problems that a traditional flame retardant is uneven in permeation and poor in synergism are solved.

The invention discloses a method for preparing sound-absorbing and heat-insulating polymer foam by utilizing ultrasonic-assisted regulation and control of a foam structure and a product, and the method comprises the following steps: S1, mixing a raw material A, a catalyst, a surfactant and a foaming agent to obtain a foaming white material; s2, taking polyisocyanate as a foaming black material, and mixing the foaming white material with the foaming black material to obtain foaming slurry; s3, pouring the foaming slurry into a mold, paving the foaming slurry, foaming and self-curing the foaming slurry to obtain a foam intermediate, and performing post-treatment on the foam intermediate to obtain polymer foam; in the preparation process of the step S3, ultrasonic waves are introduced into one or more stages of chemical foaming of the polymer, and the foam structure is regulated and controlled by utilizing the mechanical vibration effect and the cavitation effect of the ultrasonic waves. The polymer foam material with different foam structures and excellent sound absorption and heat insulation performance is obtained through the preparation method.

The invention discloses an ultrasonic cleaning process for plastic toy products, and belongs to the technical field of cleaning. Comprising the following steps that the plastic toy product is soaked in cleaning liquid, ultrasonic waves are applied to assist cleaning, then the plastic toy product is fished out and washed with water, the operation is repeated, and cleaning is completed; the cleaning solution comprises a surfactant, a penetrant, sodium hydroxide, a builder and deionized water; the builder is of a microsphere structure with a core formed by compounding porous calcium carbonate and Al2ZnO4 crystals and a shell formed by crosslinking sodium alginate and calcium ions. Ultrasonic waves are used for assisting cleaning liquid in cleaning, resonance friction is generated between ultrasonic vibration frequency and the cleaning liquid, and stubborn oil stains are cleaned up.

A preparation method of lawn bricks capable of solidifying and stabilizing lead-contaminated soil includes: preparing carbonized bagasse, grinding and mixing the carbonized bagasse and potassium carbonate in a mortar, heating the resulting mixture to 600-650° C., and maintaining for 2-3 hours; fully mixing the carbonized and treated bagasse, heavily-lead-contaminated soil, construction waste and fly ash; then adding a treated sodium silicate solution and stirring, and reacting under ultrasonic conditions; and performing grouting and compacting to obtain a homogeneous green brick, and curing same to obtain a lawn brick. The bagasse is taken as a raw material, and is carbonized and then mixed with the pre-treated heavily-Pb-contaminated soil, construction waste and fly ash, and under an action of alkali excitation and ultrasonic assistance, the resulting mixture is cured to form the lawn brick, such that Pb (II) in the Pb-contaminated soil is not migrated and converted any more.

The invention relates to a method for extracting roselle anthocyanin through enzymolysis-ultrasonic assistance, a product and application of the product. The method comprises the following steps: degreasing roselle powder, and performing enzymolysis for 24 hours by using cellulase and pectinase (20U / g respectively) under the conditions that the pH is 5.0 and the temperature is 40 DEG C; an acetone-hydrochloric acid mixed solution (the volume fraction of hydrochloric acid is 36%) with the liquid-material ratio being 10: 1 serves as an extracting agent, and ultrasonic extraction is conducted for 34 minutes at the temperature of 58 DEG C and the power of 160 W; and finally, centrifuging, extracting with ethyl acetate, and purifying to obtain an anthocyanin product. According to the method, the extraction rate reaches 3.087 mg / g, the main component of the product is cyanidin-3-glucoside, the antioxidant and antibacterial activity is remarkable, the scavenging rates of DPPH, ABTS and hydroxyl radicals are 86.26%, 81.34% and 93.75% respectively under the concentration of 3.0 mg / mL, and the scavenging rates are superior to those of vitamin C with the same concentration; under the concentration of 11mg / mL, the compound has an obvious inhibition effect on escherichia coli and staphylococcus aureus. The process is efficient and mild, the product activity is excellent, and the method is suitable for development and application of natural antioxidants and antibacterial agents.