45results about How to "Not easy to harm" patented technology

The invention provides a fertilizer suitable for planting dendrobium officinale in an epiphytic manner. The fertilizer comprises glutinous rice paste and fermented cow dung in a weight ratio of (5:1)-(1:5). The fertilizer has the beneficial effects that the raw materials of the fertilizer are simple and are easily available; the fertilizer organically and reasonably utilizes natural resources, is beneficial to environmental protection and is applied to planting of dendrobium officinale in an epiphytic manner; the survival rate of dendrobium officinale in epiphytic growth is more than 98%; and dendrobium officinale is water-permeable, the roots hardly rot and are hardly damaged by diseases and insect pests, thus the fertilizer is very beneficial to wild-simulated cultivation of dendrobium officinale. The invention also provides a preparation method of the fertilizer. The preparation method is simple in process and is favourable for industrial production. The invention also provides a wild-simulated method for planting dendrobium officinale in an epiphytic manner. The planting method is simple and is easy to popularize and apply.

The invention relates to a marble slab, in particular to an artificial simulated marble slab and a production method of the artificial simulated marble slab. The invention aims to overcome defects of natural marble and provide the simulated marble slab which has low price, is light, is easy to pave, has no harm and pollution and can replace the natural marble. The simulated marble slab comprises a substrate layer. A priming paint layer, a marble pattern layer and a finish layer are sequentially arranged on the positive face of the substrate layer from bottom to top. The invention also aims to provide a production method of the simulated marble slab, which comprises the following steps of: selecting a substrate; tailoring the selected substrate to a required size; tenoning on tailored substrate; coating priming paint on the positive surface of the substrate; spraying natural marble patterns on the surface coated with the priming paint of the substrate; and coating finish on the surface sprayed with the natural marble patterns of the substrate. The simulated marble slab provided by the invention can be widely applied in multiple industries such as building material, advertisement, furniture, decoration and the like.

The invention discloses a neutron and gamma ray synergistic protection glass-ceramic material and a preparation method thereof. According to the technical scheme, the preparation method comprises thesteps: ball-milling, drying and crushing aluminum borate powder to obtain an aluminum borate precursor; taking 30.0 to 40.0 wt% of boron oxide, 20.0 to 30.0 wt% of bismuth oxide, 5.0 to 10.0 wt% of phosphorus oxide, 5.0 to 10.0 wt% of silicon oxide, 10.0 to 15.0 wt% of barium oxide and 5.0 to 10.0 wt% of gadolinium oxide as raw materials, mixing, melting at the temperature of 1400-1600 DEG C, quenching with water, drying and crushing to obtain a glass shielding agent containing a radiation shielding component; and mixing the aluminum borate precursor, the glass shielding agent containing the radiation shielding component and a binding agent, carrying out mechanical pressing molding, drying, carrying out heat preservation at the temperature of 1000-1500 DEG C for 60-300 min, and carrying out furnace cooling to prepare the neutron and gamma ray synergistic protection glass-ceramic material. The prepared product is high in compressive strength, excellent in shielding performance, high inhydrothermal erosion resistance, excellent in irradiation resistance and good in thermal shock resistance.

The invention discloses a process for constructing water and electricity in ceiling. The process comprises the following steps: 1, slotting for electrician; 2, laying pipes; 3, laying cables; 4, mounting sockets and switches; 5, mounting lamps; 6, mounting a distribution box; 7, slotting for plumbers, as same as slotting for electrician; 8, mounting water pipes; and 9, performing a water pressurizing test on the water pipes at pressure before the slots are sealed, determining the water pipe to be qualified when the pressure is reduced within 0.04Mpa in 30 minutes of pressurizing since the testing pressure is 0.6-0.8Mpa and general water pressure is 0.4-0.6MPa, and sealing the water pipes with cement mortar after the water pipes are qualified. The process has the advantages of facilitating maintenance and reducing loss; a failed position can be easily found, and cannot easily influence others; and the ground is not required to be slotted.

The invention discloses an emulsion pump station. The emulsion pump station comprises a support and an emulsion preparation device, an emulsified oil tank, a transducer, an electronic control device, an emulsion storage device and an emulsion pump device which are arranged on the support, wherein the emulsified oil tank is used for providing emulsified oil; the emulsion preparation device is used for acquiring emulsified oil from the emulsified oil tank and mixing the emulsion with water to form the emulsion; the emulsion is provided for the emulsion storage device for storage by the emulsion preparation device; the emulsion pump device is used for pumping the emulsion form the emulsion storage device and supplying the emulsion to an external working zone; the transducer is used for providing power for the emulsion pump station; and the electronic control device is used for controlling and monitoring the emulsion pump station. The emulsion pump station disclosed by the embodiment of the invention is compact in structure and convenient for conveying; and the concentration of the emulsion in the emulsion preparation device can be automatically controlled, so that the ratio of the emulsion is accurate.

The invention discloses an isolated gate for traffic safety, and belongs to the field of traffic. The device comprises a plurality of isolation assemblies arranged side by side, each isolation assembly comprises a base, a first stand column, a second stand column, an upper cross beam, a lower cross beam and a buffer rod, and each isolation assembly further comprises a first baffle, a second baffle, a first fastening screw, and a second fastening screw, wherein an upper end of the first baffle is hinged to the first stand column; the lower end of the second baffle is hinged to the second standcolumn; one end of the first fastening screw is hinged to the lower end of the first baffle, and the other end of the first fastening screw is in threaded connection with the upper cross beam; and oneend of the second fastening screw is hinged to the upper end of the second baffle, and the other end of the second fastening screw is in threaded connection with the upper cross beam. According to the isolated gate for traffic safety, when the isolated gate is impacted, the first baffle and the second baffle can be turned over to form receding, the cross beam is prevented from directly bearing animpact force, the whole isolated gate can move along with a vehicle when being impacted, and therefore the vehicle or personnel are not prone to being harmed.

The invention discloses a dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing. The dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing comprises the following steps: step 1, performing enzyme treatment to obtain the fabric after enzyme treatment;step 2, performing pre-treatment to obtain the fabric after pre-treatment; step 3, performing disperse dyeing to obtain primary dyed fabric; step 4, reducing and cleaning to obtain the primary dyed fabric after cleaning; step 5, performing active dyeing to obtain the dyed fabric; step 6, performing water processing to obtain the clean fabric; and step 7, finalizing and finishing to obtain the finished fabric. The dyeing and finishing process disclosed by the invention can not only achieve good color fastness for PLA-PHBV, Tencel, and cotton interwoven fabrics, but also keep the PLA-PHBV fibers in the weft direction of the fabric in good strength; and the dyeing and finishing process disclosed by the invention has the advantage of improving the longitudinal strength to a certain extent.

The invention discloses kenaf bast thermal insulating cotton. The thermal insulating cotton is prepared by using the following steps of: soaking the kenaf bast which is taken as a raw material in an alkali liquor, carrying out mechanical solution and pulping treatment, and adding an adhesive, a flame retardant, a water-proof agent and a foaming agent into the slurry solution of the kenaf bast respectively for foaming to obtain a lightweight wall thermal insulating material the density of which is 0.01-0.09g / cm<3>. The kenaf bast thermal insulating cotton has quite low heat conductivity coefficient and quite high oxygen index, and therefore the thermal insulating cotton has good flame retardation. Compared with the existing lightweight thermal insulating material on the market (such as a glass wool board and a polyurethane foam board), the kenaf bast thermal insulating cotton has predominant advantages both in the aspects of environment friendliness and cost.

The invention relates to a preparation method of 2-amino-n-(2,2,2-trifluoroethyl)acetamide or a salt thereof, belonging to the field of medicinal chemistry. The preparation method comprises the following steps: carrying out a reaction on raw materials and amine or ammonium, and carrying out post-treatment to prepare 2-amino-n-(2,2,2-trifluoroethyl)acetamide or the salt thereof. According to the preparation method provided by the invention, an obtained product is low in impurity content, reaction conditions are mild, post-treatment is simple, energy consumption is low, cost can be reduced, and industrial implementation is facilitated.

The invention discloses a preparation method of a microbial preparation for treating mikania micrantha kunth, and belongs to the technical field of comprehensive prevention and control of invasive alien harmful species. According to the present invention, cow dung, biogas slurry and waste mushroom sticks are used as a bacterial source, peat is used as a nutrient, flora is expanded by fermentation, N-methyl-N-nitrosourea is used as an inducer, the juice of fresh mikania micrantha kunth stem is used as a screening nutrient, target mixed bacteria are obtained, the strain using the fresh mikania micrantha kunth stem as the nutrient is obtained through enrichment culture, microorganisms are adsorbed by using calcined vermiculite soaked with glucose as a carrier, and coating with sodium alginate is performed, such that the microbial preparation for treating mikania micrantha kunth is prepared; and the microorganism in the prepared microbial preparation uses the mikania micrantha kunth stem as the nutrient, such that the asexual reproduction and the seed production of the mikania micrantha kunth are cut, the treatment effect on mikania micrantha kunth is good, and the problems of slow effect, high cost, low prevention and control efficiency and easy harm on other plants of the chemical agent are effectively solved.

The invention relates to a pyrimethanil aqua, which comprises pyrimethanil, acid and water as preparation raw materials, wherein under the auxiliary action of the acid, the pyrimethanil can be dissolved in the water completely to obtain an aqua. Compared with the prior art, the pyrimethanil aqua uses the aqua to replace missible oil, wettable powder and suspending agent, and does not use an organic solvent and cause dust pollution so that pollutant stains are not remained on the surfaces of fruits and vegetables, and drug injuries are not easy to happen.

The invention discloses a novel low-smoke, halogen-free and non-toxic environment-friendly electric wire optical cable. The optical cable comprises a protective sleeve, conductor cores, vibration damping devices and a clamp, wherein the conductor cores are uniformly mounted on an inner wall of the protective sleeve; a low-smoke halogen-free flame-retardant filler is uniformly filled between an interior of the protective sleeve and outer surfaces of the conductor cores; the vibration damping devices are uniformly mounted on an outer surface of the protective sleeve; a shell is mounted on the other ends of the vibration damping devices; the shell is disposed in an annular shape; the clamp is mounted on an outer surface of the shell; a circular ring fixing block is mounted at top ends of twosides of the clamp; an internal thread is horizontally disposed at a bottom end of an intermediate position inside the circular ring fixing block; and a fastening bolt is horizontally mounted at an interior of the internal thread. The novel low-smoke, halogen-free and non-toxic environment-friendly electric wire optical cable enables the electric wire cable to emit less smoke when the cable is burned, the acid gas is less released, and the flame-retardant effect is good, and the electric wire optical cable is unlikely to directly harm the human body.

The invention relates to an injector for edible mushroom disinfestation and insect smoking particles and a preparation method thereof. The injector for edible mushroom disinfestation comprises a spray gun and a particle cylinder detachably connected with the spray gun, wherein the particle cylinder contains insect smoking particles; the insect smoking particle comprises an inner efficacy pill, a white phosphorus coating, an expanded coating and an outer coating sequentially arranged from inside to outside; the spray gun comprises an air cavity, a spray pipe and a connection part; the air cavity is communicated with one end of the spray pipe through a reducing part; an air blowing device is arranged in the air cavity and blows air toward the reducing part; a spiral rifling is arranged on the inner wall of the other end of the spray pipe; multiple raised points colliding with the insect smoking particles are arranged on the rifling path; the connection part is detachably connected with the particle cylinder, and a vibration device for vibrating the particle cylinder is arranged at the joint; and a heating layer of the expanded coating is arranged on the inner wall of the spray pipe.

The invention relates to application of total volatile oil of branches and leaves of Ledum palustre in controlling stored grain insects, and belongs to the technical field of biological pesticides. Amedicament for preventing and controlling the stored grain pests provided by the present invention belongs to a plant-derived insecticide, is easy to decompose, does not pollute the environment, and is safe to humans and animals; the active ingredient of the medicament is the total volatile oil from the branches and leaves of the Ledum palustre, and has a variety of action mechanisms against the insect pests. The resistance to the medicament of the insects is not easy to produce. The medicament can be used for a long period of time. The medicament loses activity after being used for deinsectization, may not accumulate in the insects, and protects the ecological environment. The preparation method of the medicament is simple and easy to implement, the range of raw materials is wide, cost islow, the medicament is suitable for large-scale production, and the medicament can be widely used for the prevention and control of the stored grain pests.

The invention discloses a medical latex glove production process which comprises the following steps: gum dipping and forming: preparing natural rubber dipping latex and a solidification liquid, selecting a proper hand mold, heating the hand mold, dipping the hand mold into the solidification liquid, enabling the surface of the hand mold to be in full contact with the solidification liquid, taking out the hand mold after the hand mold is dipped for 20-60 seconds, then drying, cooling the hand mold to 30-50 DEG C, and taking out the hand mold when the temperature of the hand mold is reduced to 30-50 DEG C; the hand mold is soaked in the natural rubber soaking latex and stays in the natural rubber soaking latex for 40-60 seconds, the hand mold is taken out of the natural rubber soaking latex and then vulcanized and dried, the dried hand mold is placed in demolding equipment, the medical glove is separated from the hand mold, and a primary finished product of the medical glove is obtained; in the production process, after nano calcium carbonate and nano silicon dioxide in the antibacterial agent make contact with the gloves, antibacterial layers can be gradually formed on the surfaces and the interiors of the gloves, and compared with a silver ion antibacterial agent, the antibacterial agent is good in stability and not prone to bringing harm to a user.

The invention discloses flame-retardant antique color mud paint and a preparation method thereof. The flame-retardant antique color mud paint is prepared from the following raw materials in parts by weight: 45 to 60 parts of nickel tailings powder, 5 to 20 parts of granite saw mud, 13 to 27 parts of a borate flame-retardant agent, 8 to 26 parts of pigment, 6 to 14 parts of diatomite, 3 to 9 partsof bentonite, 7 to 22 parts of quicklime, 8 to 19 parts of cement and 25 to 58 parts of water. By virtue of repeated test, the invention provides the flame-retardant antique color mud paint, the existing preparation method of the antique building paint is improved, the nickel tailings with good wear resistance and high hardness are converted into treasure, the diatomite with a porous structure isadopted to absorb the environment-friendly borate flame-retardant agent, the granite saw mud and the calcium hydroxide generate chemical reaction to generate a compound with water hard gel performance, and the flame-retardant and weather-resistant environment-friendly flame-retardant antique color mud paint is prepared.

The invention belongs to the technical field of roads and bridges, and particularly relates to raw material conveying equipment for building a bridge. By arranging a middle plate, side plates, movable inclined baffle units, fixed inclined baffle units, inclined pull ropes and sliding plate units on the bottom plate of the transport vehicle, the conveying equipment has the advantages that the front end and the two sides have the limiting protection effect when steel pipe raw materials are transported, and steel pipes are convenient and rapid to load and unload. The steel pipe front end blocking protection structure is high in strength, the sliding steel pipe is not prone to colliding with a cab when a vehicle is braked suddenly, the inclined pull rope protection structures on the two sides of the steel pipe are high in strength, the steel pipe sliding from the side edge is not prone to falling on the ground when the vehicle is braked suddenly or turns, and pedestrian safety is not prone to being harmed; the inclined pull ropes can be retracted when the steel pipe is loaded or unloaded; the conveying equipment has the advantages that two-side space can be vacated for loading and unloading of steel pipes, the whole conveying equipment is high in structural strength, protection of the steel pipes is comprehensive and thorough, and overall transportation and use are efficient and safe.

The invention relates to insect smoking particles for edible mushroom cultivation as well as a preparation method and application pot thereof. The insect smoking particle comprises an inner efficacy pill, a middle coating and an outer coating, wherein the inner efficacy pill comprises the following components in parts by weight: 20 parts of pyrethrum, 20 parts of derris, 20 parts of celastrus angulatus, 30 parts of wormwood, 2 parts of a leavening agent, 2 parts of a combustion improver, 2 parts of a first lure compound, 2 parts of a second lure compound and 2 parts of a third lure compound; the first lure compound comprises one or more of salicylaldehyde, isobutyl salicylate, n-butanal, benzyl salicylate, isoamyl salicylate, benzaldehyde, phenylacetaldehyde and methyl phenyl ketone n-nonanal; the second lure compound comprises one or more of propionic acid, n-butyric acid, isobutyric acid, n-valeric acid, isovaleric acid, isocaproic acid and 2-phenylethanol; and the third lure compound comprises one or more of indole, phenylacetaldehyde, anethole, eugenol, cinnamaldehyde and cinnamonitrile.

The invention discloses a toxic liquid isolation device for chemical production workshops, which belongs to the field of chemical production. It is a toxic liquid isolation device for chemical production workshops. The frame isolates the chemical liquid storage tank, thereby reducing the harm to the workshop employees. When the chemical liquid storage tank leaks under special circumstances, the movable plate can be pressed against the pouch by pressing the pressing rod, so that the needle will The soda powder bag is punctured and the soda powder in the soda powder bag is released, and when the soda powder bag is punctured and shakes, the water polo solution in the balloon will be squeezed out, thereby making the soda The powder and the aqueous solution are mixed and dissolved, and flow into the port, and finally through the pressure of the movable plate, it is sprayed out through the atomizing nozzle to suppress the leakage of the chemical liquid storage tank.

The invention relates to the technical field of furniture and provides a low-odor environmentally-friendly paint for furniture. The low-odor environmentally-friendly paint for the furniture is to solve a problem that the paint covering the surface of the furniture is likely to give off toxic gas with special odor. The low-odor environmentally-friendly paint for the furniture comprises the following components: 67.5-90 parts of butyl acetate, 19.5-26 parts of n-butyl alcohol, 10.5-14 parts of isopropanol, 30-40 parts of polyacrylic adsorbent resin and 9-12 parts of dimethylbenzene in parts by mass. By adding the polyacrylic adsorbent resin, the special odor volatilized by the dimethylbenzene is easily absorbed by the polyacrylic adsorbent resin; and meanwhile, as the butyl acetate possessesa property of pleasant fruit smell, the mixed paint is unlikely to give off the special odor so that a paint coating is unlikely to volatilize the toxic gas and is beneficial for improving the environmental protection performance of the paint.

The invention discloses a podocarpus macrophyllus seedling cultivation method. The method comprises the following steps: S1, selecting to perform in spring or autumn; s2, collecting cutting slips, selecting and collecting semi-lignified lateral branches which grow robustly and germinate in the current year or are biennial, and disinfecting the lateral branches for later use; s3, branch treatment: quickly dipping the podocarpus macrophyllus lateral branches collected in S2 with a rooting agent solution for 5-10 seconds; s4, cutting of the cutting slips is carried out, branches 5 mm above leaves of the cutting slips selected in the S2 are cut off, and the cutting slips branches at the oblique cutting positions are 40-45 degrees; s5, seedbed cutting; s6, cutting. The method has the advantages that the podocarpus macrophyllus is convenient to move in the cuttage process, rapid propagation is facilitated, the seedbed is disinfected specially, so that microorganisms are not easy to dip and damage plant cutting slips, the water permeability and the air permeability are good, and seedlings cannot suffocate due to excessive moisture; particularly, the air humidity can be stabilized at 85% or above, so that the cutting slips grow in a suitable growth environment.

The invention discloses an isolation fence for traffic safety, which belongs to the field of traffic. The device includes a plurality of isolation assemblies arranged side by side, the isolation assembly includes a base, a first column, a second column, an upper beam, a lower beam and a first buffer rod, and the isolation assembly further includes: a first baffle, the upper end of the first baffle is hinged to the first column; a second baffle, the lower end of the second baffle is hinged to the second column; and a first tightening screw, one end of the first tightening screw is hinged to the lower end of the first baffle, and the other end is threaded connected to the upper beam; a second tightening screw, one end of the second tightening screw is hinged to the upper end of the second baffle plate, and the other end is threadedly connected to the upper beam. The invention provides an isolation fence for traffic safety. When impacted, the first baffle plate and the second baffle plate can be turned to give way to avoid direct impact force on the beam. When impacted, it will move with the vehicle as a whole, so it is not easy to be harmed. vehicles or people.

The invention discloses kenaf bast thermal insulating cotton. The thermal insulating cotton is prepared by using the following steps of: soaking the kenaf bast which is taken as a raw material in an alkali liquor, carrying out mechanical solution and pulping treatment, and adding an adhesive, a flame retardant, a water-proof agent and a foaming agent into the slurry solution of the kenaf bast respectively for foaming to obtain a lightweight wall thermal insulating material the density of which is 0.01-0.09g / cm<3>. The kenaf bast thermal insulating cotton has quite low heat conductivity coefficient and quite high oxygen index, and therefore the thermal insulating cotton has good flame retardation. Compared with the existing lightweight thermal insulating material on the market (such as a glass wool board and a polyurethane foam board), the kenaf bast thermal insulating cotton has predominant advantages both in the aspects of environment friendliness and cost.

The invention discloses an emulsion pump station. The emulsion pump station comprises a support and an emulsion preparation device, an emulsified oil tank, a transducer, an electronic control device, an emulsion storage device and an emulsion pump device which are arranged on the support, wherein the emulsified oil tank is used for providing emulsified oil; the emulsion preparation device is used for acquiring emulsified oil from the emulsified oil tank and mixing the emulsion with water to form the emulsion; the emulsion is provided for the emulsion storage device for storage by the emulsion preparation device; the emulsion pump device is used for pumping the emulsion form the emulsion storage device and supplying the emulsion to an external working zone; the transducer is used for providing power for the emulsion pump station; and the electronic control device is used for controlling and monitoring the emulsion pump station. The emulsion pump station disclosed by the embodiment of the invention is compact in structure and convenient for conveying; and the concentration of the emulsion in the emulsion preparation device can be automatically controlled, so that the ratio of the emulsion is accurate.

The invention discloses a sterilization device for food package, and particularly relates to the technical field of sterilization equipment.The sterilization device comprises a machine body, a sterilization cavity is formed in the machine body, openings are formed in the front side and the rear side of the sterilization cavity, opening and closing mechanisms are arranged on the outer sides of theopenings, and a conveying belt is arranged at the bottom of the sterilization cavity; the opening and closing mechanism comprises two movable doors, and the two movable doors are symmetrically arranged on the two sides of the opening. According to the invention, the opening-closing mechanism is arranged; the openings in the two sides can be closed when no food package passes through the openings;when a food package passes, the food package is opened, heat and the leakage amount of vaporized hydrogen peroxide are greatly reduced, energy consumed for keeping high temperature is greatly reduced,meanwhile, the amount of vaporized high-concentration hydrogen peroxide leaked into the working environment is greatly reduced, harm to the body of a worker is not likely to be caused, and the actualusing effect of the hydrogen peroxide vaporizer is good.

This application relates to the field of drawing machines, in particular to a drawing machine mold core replacement device and its use method, which includes a support assembly and a mounting assembly rotatably connected to the support assembly, the mounting assembly includes a As for the mounting plate, several mold cores are pierced between the two side walls in the axial direction of the mounting plate, the axes of the cores are parallel to the axis of the mounting plate, and the several mold cores are arranged circumferentially around the axis of the mounting plate. The application has the advantages of reducing the possibility of operators frequently disassembling and assembling mold cores, and also has the advantages of energy saving and environmental protection.

The invention discloses a high-safety intelligent elevator, and belongs to the field of elevators. According to the scheme, when an elevator car fails and falls, the elevator car is detected through a detection mechanism and fed back to a driving assembly after being abnormal, and the driving assembly drives a push rod to push; when the elevator car falls, the pushing plate quickly pushes the relieving mechanism out of the safety mechanism and makes frictional contact with the elevator shaft, so that the falling speed of the elevator car is slowed down, falling abnormity is detected in real time through the detection mechanism, feedback is made in time, and the relieving mechanism buffers the falling speed of the elevator car; the elevator car can stop within the shortest time, the falling speed can be relieved to the maximum degree through the relief mechanism when the falling speed is high and the elevator car cannot stop easily, the elevator car is not prone to harm passengers in the elevator car after making contact with the ground, and therefore the safety of the elevator car is enhanced.

The invention discloses a sterilization device for food package, and particularly relates to the technical field of sterilization equipment.The sterilization device comprises a machine body, a sterilization cavity is formed in the machine body, openings are formed in the front side and the rear side of the sterilization cavity, opening and closing mechanisms are arranged on the outer sides of theopenings, and a conveying belt is arranged at the bottom of the sterilization cavity; the opening and closing mechanism comprises two movable doors, and the two movable doors are symmetrically arranged on the two sides of the opening. According to the invention, the opening-closing mechanism is arranged; the openings in the two sides can be closed when no food package passes through the openings;when a food package passes, the food package is opened, heat and the leakage amount of vaporized hydrogen peroxide are greatly reduced, energy consumed for keeping high temperature is greatly reduced,meanwhile, the amount of vaporized high-concentration hydrogen peroxide leaked into the working environment is greatly reduced, harm to the body of a worker is not likely to be caused, and the actualusing effect of the hydrogen peroxide vaporizer is good.

The invention discloses an electrothermal film, and specifically provides a ZnO-based electrothermal film doped by Al<3+>, Ga<3+> and Ag<3+>, and a preparation device and method thereof. The ZnO-based electrothermal film doped by Al<3+>, Ga<3+> and Ag<3+> is safe and environment-friendly in preparation process, low in cost, good in electrical conductivity, high in transmittance, uniform and adjustable in film thickness and high in quality. The invention solves the problems that a large amount of acid mist is generated in a conventional preparation process of an electrothermal film, pollution is serious, the prepared film is poor in quality and serious in power attenuation and the like in the prior art. The structural formula of the electrothermal film is Zn<1-x>M<x>O. The preparation device comprises a box body and a motor arranged on the box body, wherein the motor drives a quartz tube substrate in the box body to rotate, a heating module is arranged in the box body, an ultrasonic spray head and a precursor liquid inlet are arranged on the parts, corresponding to the quartz tube substrate, of the box body, and the ultrasonic spray head atomizes the precursor liquid from the precursor liquid inlet and uniformly coats the surface of the quartz tube substrate.