62results about How to "Has a self-cleaning effect" patented technology

The invention introduces an air comprehensive purifying and regulating device. The air comprehensive purifying and regulating device is composed of an air input fan, an electronic air purifier, an atomized water generator, an air and atomized water mixing chamber, an atomized water recovering device and a purified air output fan; an air comprehensive purifying and regulating is realized; the air comprehensive purifying and regulating device has the functions of sterilization, disinfection, elimination of odor, removal of chemical pollution and smoke suppression; ozone residue is apt to satisfy standard requirement, later maintenance workload is reduced and the air comprehensive purifying and regulating device is simple and effective in implementation and convenient to use.

The invention discloses a novel sand control screen pipe with adjustable on-site sand stop precision, and belongs to the field of oil well completion sand control. The novel sand control screen pipe mainly comprises five parts, namely a central pipe, a fixed-precision sand stop layer, an adjustable-precision sand stop layer, an outer protective sleeve and a sand stop precision precise adjusting mechanism, wherein the central pipe is provided with spirally distributed through holes and is mainly used for supporting the entire screen pipe and allowing oil to pass through; the fixed-precision sand stop layer is mainly used for controlling sand; the adjustable-precision sand stop layer can change the sand stop precision under the adjustment of the precise adjusting mechanism to play a major role in sand control; the outer protective sleeve is mainly used for protecting the internal structure of the screen pipe and reducing erosion effect of internal fluid and sand; and the sand stop precision precise adjusting mechanism is mainly used for adjusting sand stop precision of the adjustable-precision sand stop layer. Compared with the conventional sand control screen pipe with fixed sand stop precision, the adjustable-precision sand control screen pipe can realize on-site real-time design and sand stop precision adjustment aiming at the characteristics of a single well to improve the sand control effect; the novel sand control screen pipe is convenient for mass production of the screen pipe manufacturers and can precisely control the sand control precision; and the novel sand control screen pipe is convenient for screen pipe development, is convenient for suppliers to provide a sand control design, integrated service of the sand control screen pipe, and the like.

The invention discloses a novel rubber tire isolation release agent and a preparation method thereof and belongs to the field of rubber auxiliary agents. The preparation method comprises the following steps of preparing active nanometer calcium carbonate from water-soluble calcium chloride and sodium carbonate as main raw materials, and compounding the active nanometer calcium carbonate and an organic film-forming matter into the novel rubber tire isolation release agent. The novel rubber tire isolation release agent obtained by the preparation method is suitable for isolation between rubber materials and separation between the rubber materials and a mold in tire production, has good effects, is convenient for use, has no pollution, is safe and reliable, and is convenient for mold surface cleaning.

The invention discloses a reflection silver mirror used for solar energy thermal power generation. The reflection silver mirror comprises ultrawhite ultrathin glass and substrate glass of a parabolic shape. A front surface of the ultrawhite ultrathin glass is plated with a highly transparent self-cleaning film layer. A back surface of the ultrawhite ultrathin glass is plated with an Al[2]O[3] bonding layer which is plated with an Ag reflecting layer. The above plated ultrawhite ultrathin glass is integrally fixed on a paraboloid of the substrate glass through the bonding layer. The reflection silver mirror has the advantages of high reflectivity and good weather resisting property.

The invention discloses a titanium heat exchanger for an air conditioner, and a processing method thereof. The titanium heat exchanger comprises a heat exchange pipe and cooling fins. The surface of each cooling fin is provided with a TiO2-containing titanium coating, the titanium coating contains CuO and Ag2O, the mass percentage of CuO is 10%-15%, and the mass percentage of Ag2O is 10%-15%. When the light is sufficient, the titanium coating of the heat exchanger is decomposed under the photochemical catalysis of the ultraviolet light, and various organics attached on the titanium oxide surface are removed. When the light is insufficient, titanium oxide also can make the internal electrons excited to generate hydroxyl atomic groups and hydrogen peroxide under the action of nano silver and nano copper, so as to decompose the organics. Therefore the heat exchanger has long-term and stable effect of anti-bacterial and mildew-removal.

The invention discloses a medicine pounding tank, and relates to the technical field of pounding appliances. The medicine pounding tank comprises a tank body device, a top cover, a medicine pounding device and a conical ring, wherein the top cover is connected to the top of the tank body device in a matched mode, the conical ring is fixed at the center of the bottom of the top cover and is located on the surface of the medicine pounding device, an inner tank is arranged inside an outer tank, a reset spring is fixed between the two sides, corresponding to the top of the surface of the inner tank, of the top of the outer tank, an elastic air bag is placed at the center of the bottom of the inner wall of the outer tank, an inner cavity is formed inside the outer tank, the air outlet end of the elastic air bag communicates with the inner cavity, and a knocking device is arranged inside the outer tank and is located in the inner cavity. According to the medicine pounding tank, the self-cleaning effect is achieved, the power of the medicine pounding tank during medicine pounding is fully utilized, residual powder on the side wall is automatically cleaned through impact and air flow, meanwhile, the medicine pounding is rapid and thorough, time and labor are saved, and the working efficiency and the use performance are improved.

The invention discloses an aluminium-plastic composite board with functions of heat insulation, sound insulation and flame retardance, belonging to the technical field of aluminium-plastic composite boards and comprising an upper-layer aluminium board, a lower-layer aluminium board, a flame-retardant foam plastic layer and a layer of steel plate. The aluminium-plastic composite board is characterized in that a nano photocatalyst layer is coated on the upper-layer aluminium board; the steel plate is positioned in the flame-retardant foam plastic layer; the flame-retardant foam plastic layer is divided into upper-layer flame-retardant foam plastic and lower-layer flame-retardant foam plastic; the upper-layer flame-retardant foam plastic is bonded with the upper-layer aluminium board and the steel plate by using an adhesive; the lower-layer flame-retardant foam plastic is bonded with the lower-layer aluminium board by using the adhesive; and the two plastic layers are concavely and convexly connected with the two-layer aluminium boards. The aluminium-plastic composite board has the advantages that due to adoption of the steel plate for supporting, the effects of heat insulation and sound insulation are better; and due to the nano photocatalyst layer on the surface, the board has a self-cleaning function, and the service life of the composite board is prolonged.

The invention discloses a graphene nano composite material. The preparation method of the graphene nano composite material comprises the following steps: (1) preparing a graphite oxide suspension; (2) performing a reaction on the graphite oxide suspension and a copper lysine complex, adding hydrazine hydrate and NaBH4, and performing reduction; (3) adding disodium EDTA to remover copper; (4) mixing the product obtained in the step (3), an E-42 epoxy resin, ethylene glycol diglycidyl ether, poly(ethylene glycol) diglycidyl ether, KH560 and nano boehmite, and performing ultrasonic dispersion; and (5) performing a reaction on the product obtained in the step (4), C12-C14 aliphatic glycidyl ethers, nano titanium dioxide, glass microspheres and camphor at 70-80 DEG C for 2-3 hours. The graphene nano composite material disclosed by the invention effectively solves the problem of dispersity in graphene; the adhesive force, wear resistance and antibacterial effect of the composite material are enhanced; and the graphene nano composite material can be used for preparing environment-friendly paints.

The invention discloses an inflow-control and sand-prevention device which mainly solves the problems that when an oil-gas well is mined, sand and water are produced, and especially in the middle and later mining periods, the recovery efficiency is seriously affected. The device comprises a punching base pipe and a wire-winding sand-prevention pipe, wherein the two ends of the base pipe are connected with oil pipes through connection threads, overflowing holes are formed in the base pipe, overflowing rings capable of being radially expanded when meeting water are embedded into the overflowing holes, and the wire-winding sand-prevention pipe is wrapped around the base pipe. The flow-control and sand-prevention device has the advantages that an inflow-control device and a sand-prevention screen pipe are integrated, the flow resistance level can be automatically adjusted according to the oil-layer water yield, it is ensured that the inflow profile of a horizontal wellbore is uniform while the sand is prevented while, gas and water coning is reduced, and the recovery efficiency of an oil well is improved, and the flow-control and sand-prevention device is very high in practical value and popularization value.

The invention discloses a coaxial powder feeding nozzle for adjusting a powder flow converging focal point in a pneumatic mode. The coaxial powder feeding nozzle comprises a laser head, a sleeve, a coaxial powder feeding head, a powder feeding cavity, a water jacket and a water cooling cavity, the sleeve is connected below the laser head, the coaxial powder feeding head is connected below the sleeve, a focusing lens is arranged above the sleeve, a protective lens is arranged at the upper end of the coaxial powder feeding head, the powder feeding cavity is a conical annular cavity formed between the outer wall of the coaxial powder feeding head and the water jacket, the powder feeding cavity is divided into an inner cavity and an outer cavity through an isolation plate and adjusting stirring pieces, the water cooling cavity is connected with a water inlet and a water outlet, the multiple adjusting stirring pieces are provided, are uniformly distributed in the circumferential direction and are connected to the lower end of the isolation plate, and the adjusting stirring pieces can deflect relative to the coaxial powder feeding head. According to the coaxial powder feeding nozzle, theadjustment of the powder flow converging focal point is realized in the pneumatic mode, so that the advantages that the structure is simple, the reaction is sensitive, the adjusting range is wide andthe like are achieved.

The invention discloses a heat-absorbing, heat-storage and water-collecting integrated solar drying system, which comprises a heat-absorbing module, a heat-storage module, a heat-conducting module, adrying module, a fan, a water-collecting module and a temperature-control module. The heat-absorbing module is connected with the heat-storage module through the heat-conducting module, and the heat-storage module comprises a metal sponge, an organometallic framework loaded on the metal sponge, and a hydrate salt loaded on the organometallic framework; the drying module comprises a material frame,a conveying belt, a hot air inlet, an air outlet, a transparent cover, a heat-storage space and a heat-insulating layer; the fan is placed at the hot air inlet, the heat-absorbing module and the heat-storage module are connected to the heat-storage space through the hot air inlet, and the heat-storage space is coated with the heat-insulating layer; and the water-collecting module is connected with the heat-storage module through a pipeline. The multiple functions of heat absorbing, heat storage, heat releasing and water collecting are integrated, the problem of unstable and discontinuous solar energy and the problem of effective energy storage and heat storage are solved, the drying speed is high, the drying time is short, and various materials at different temperatures can be dried simultaneously.

The invention relates to a room-temperature curing super-hydrophobic self-cleaning fluorosilicone resin, a preparation method and an application thereof. The method comprises the following steps: firstly adding 60 parts of perfluor hydrogen-containing polymethylhydrosiloxane, 4-8 parts of vinyl fluoride-containing monomer, 5-10 parts of perfluoroethylene polysiloxane and 300-400 parts of diluent into a reactor, uniformly stirring and heating to 40-80 DEG C; adding 0.5-1.5 parts of Karsted catalyst solution, reacting for 2-4 hours at 40-80 DEG C and then dropwise adding 3-8 parts of gamma-methylacryloyl propyl-propyl trialkyl silane and completely dropwise adding within 1h; and cooling to room temperature and continuously stirring for 1-2 hours, thereby acquiring the super-hydrophobic self-cleaning fluorosilicone resin disclosed by the invention. The invention has the advantages that (1) the alcoxyl bond is in contact with and crosslinks with air so as to increase the film-forming hardness following the solvent evaporation and curing of the resin under room temperature and the hardness of a pencil can reach up to 3H after fully curing and (2) the resin is compounded from perfluoro polysiloxane and perfluoro vinyl monomer, the contact angle of water on the cured film of the resin is more than 160 degrees and the resin has super-hydrophobicity and a self-cleaning effect.

The invention discloses an aluminum pigment for plastic paint. The aluminum pigment is characterized by consisting of the following raw materials in parts by weight: 40-60 parts of micron-scale spherical aluminum powder, 0.1-0.2 part of polyglycerol ricinoleate, 1-2 parts of n-butyl acetate, 20-30 parts of 200# solvent oil, 1-2 parts of talc powder, 0.3-0.5 part of silane coupling agent A-151, 1-2 parts of tributyl acetyl citrate, 8-12 parts of ethyl orthosilicate, 0.5-1 part of zinc stearate, 4-6 parts of polytetrafluoroethylene micro powder, 0.2-0.4 part of glycerol monolaurate, 0.5-1 part of silane coupling agent KH-550, 8-10 parts of ethyl acetate, 0.5-1 part of propylene glycol and 2-4 parts of aids. The aluminum pigment disclosed by the invention has good adhesive force on the surface of a plastic substrate, is convenient to coat, long-acting and fouling resistant, has good mechanical property and self-cleaning effect, can effectively solve the problems that the plastics are easy to age, scratch and stain and is suitable for the plastic paint.

The invention discloses a transparent backplane for a photovoltaic module and a preparation method thereof. The transparent backplane successively includes, from the outside to the inside, a hydrophobic modified polyvinylidene fluoride film layer, a first fluorocarbon coating layer, a transparent substrate, and a second fluorocarbon coating layer. The preparation method comprises the following steps: coating the two sides of the transparent substrate with the first fluorocarbon coating layer and the second fluorocarbon coating layer respectively to obtain a double-sided coated transparent substrate; coating the outer layer of the first fluorocarbon coating layer of the double-sided coated transparent substrate a hydrophobic modified polyvinylidene fluoride casting film solution which formsthe hydrophobic modified polyvinylidene fluoride film layer on the outer layer of the double-sided coated transparent substrate by a phase inversion method. The transparent backplane has a simple preparation process, is economical and environment-friendly, has good weather resistance, and can be self-cleaned.

The invention discloses a built-in rotary cathode structure. The built-in rotary cathode structure comprises a cathode door, wherein a motor seat is arranged at the lower end of one side of the cathode door; a target motor is arranged at the upper end of the motor seat and is fixedly mounted on the motor seat; a synchronizing wheel is arranged at the lower end of the motor seat; a lower end seat and an upper end seat are arranged on the other side of the cathode door; a lower end cap, a target tube and an upper end cap are arranged at the upper end of the lower end seat; the synchronizing wheel is fixedly connected with the lower end cap; and magnetic fluid is arranged at the lower end of the lower end cap. The target tube of the built-in rotary cathode structure is rotary, so that a target surface has a self-cleaning function; the utilization rate of a target material is high, a magnetic pole piece is slender, and uniformity of the thickness of a deposited film is improved; a magnetic fluid sealing design is adopted, the built-in rotary cathode structure is suitable for a production process for batch production, and modular design of a vacuum cavity of a large-area production line is facilitated; and the length of the whole magnetic pole piece can be increased according to the process, the structure of the cathode door is good in universality, the utilization rate of the target material is high, and process stability is also high.

A nano-structured surface includes a substrate layer, and a plurality of immobilized nanoparticles on the substrate layer. The surface has a water contact angle of greater than 145 degrees. An in situ method of fabricating a nano-structured surface includes treating a substrate layer with a mixture that includes a silica precursor, a water-soluble catalyst, and a low-surface-energy compound to form a treated substrate layer, and curing said treated substrate layer in the atmosphere of ammonia to form a nano-structured surface on the substrate layer. The nano-structured surface formed by the method has surface roughness degree and low surface energy thereby having excellent hydrophobicity and larger water contact angle to form a bionic lotus leaf surface. The nano-structured surface can realize self-cleaning function conveniently and durably.

The invention discloses a system for efficient self-cleaning online measurement of active oxygen free radicals in atmospheric particulates. The system comprises an online atmospheric particulate collection part, a fluorescence measurement instrument and an exhaust assembly; the on-line atmospheric particulate collection part comprises a particulate growth chamber, a steam generator, a steam spraypipe, a plurality of liquid cooling pipes and a cyclone collector; an atmospheric sample and water vapor are mixed at a gas inlet of the particulate growth chamber; the inner wall of the particulate growth chamber is coated with a cerium oxide modified nano hydrophobic coating; an inlet of the cyclone collector is communicated with an outlet of the particulate growth chamber; a fluorescence determination liquid inlet is formed in the inlet of the cyclone collector; the mixture is separated into gas and a collected liquid in the cyclone collector; the gas is exhausted through the exhaust assembly; the collected liquid is discharged from a liquid outlet of the cyclone collector, and the collected liquid is detected by the fluorescence measurement instrument to obtain the concentration of thereactive oxygen free radicals in the atmospheric particulates in the collected liquid. The system has the advantages of high efficiency, self-cleaning, accuracy and the like.

The invention discloses a double-returned material auxiliary peeling machine, which comprises a push head and a peeling cutter arranged oppositely. The push head and the peeling cutter are cooperatedfor peeling; a first push ring sleeves at the outer surface of the push head; and a second push ring sleeves at the outer surface of the peeling cutter. The double-returned material auxiliary peelingmachine provided by the invention effectively prevents skin materials from adhering or mounting, and the equipment production continuity is good.

The invention belongs to the technical field of coatings, and particularly relates to a self-cleaning type coating for a wood base, and a preparation method and application method of the coating. Theself-cleaning coating for the wood base comprises a middle layer and a self-cleaning layer, wherein the middle layer is sprayed on the wood base, and the self-cleaning layer is sprayed on the middle layer; the middle layer comprises polyurethane, nano silicon dioxide, acrylic acid, ethanol, acrylic ester and nano magnesium hydroxide; and the self-cleaning layer comprises nano titanium dioxide, tetrabutyl titanate, ethanol, water and polyvinyl alcohol. The self-cleaning type coating for the wood base provided by the invention can utilize the photocatalytic reaction of the titanium dioxide in the self-cleaning layer to realized the self-cleaning function; and meanwhile, the polyurethane contained in the middle layer has a corrosion-resistant effect, so that the self-cleaning layer can be prevented from being in direct contact with the wood base for corroding or decomposing the wood base.

The invention belongs to the technical field of cleaning and discloses a high-efficiency cleaning device. The problems of poor negative presser pipeline adsorption cleaning effect and chip splashing due to uneven of gaps at present are solved. The high-efficiency cleaning device comprises a machine body. A negative pressure fan is mounted on the machine body. A negative pressure cavity is formed in the machine body. A negative pressure port of the negative pressure fan communicates with the negative pressure cavity. The negative pressure cavity further communicates with a negative pressure channel. The negative pressure channel communicates with a negative pressure pipeline used for extending into a gap. The negative pressure pipeline is connected with a cleaning head. The high-efficiencycleaning device is characterized in that the negative pressure cavity comprises a first chamber, a second chamber and a third chamber which communicate with one another in sequence. A first spiral flow guiding piece is arranged in the first chamber. The negative pressure channel communicates with the first chamber in the tangential direction of the first chamber. An openable sealing cover is arranged at the lower end of the first chamber. The first chamber communicates with the second chamber through a pipeline.

The invention discloses a camera module with a self-cleaning function for a small-pipe-diameter desilting robot. The camera module comprises a robot, a groove is formed in the robot, a convex block is slidably connected to the interior of the groove, a camera body is fixedly connected to the convex block, the camera body is in contact with the robot, and the convex block is in contact with a limiting block. And the limiting block is slidably connected with the groove, a limiting rod is fixedly connected into the limiting block, the limiting rod is slidably connected with the convex block, and a spring is arranged on the outer side of the limiting rod. According to the invention, the camera body can be installed and fixed by designing the insertion connection of the convex block and the groove, the insertion connection of the limiting rod and the convex block and the insertion connection of the clamping block and the camera body, and meanwhile, the limiting rod and the convex block are convenient to separate, and the clamping block and the camera body are convenient to separate; therefore, the camera body is convenient to disassemble and overhaul, and convenience and rapidity are realized.

The invention relates to a mouse pad, in particular to a novel anti-skid and self-cleaning mouse pad, belonging to the field of computer accessories. The mouse pad disclosed by the invention has the advantages as follows: a suction cup is arranged at the bottom of a base pad, so that the mouse pad can be prevented from moving along with movement of a mouse; meanwhile, because a protruding edge is arranged at four sides of the upper surface of the base pad, the mouse can be stopped by the protruding edge and is incapable of leaving the mouse pad in the event of sliding to the edge position; and in addition, a protective film and a photocatalyst coating are arranged on the upper surface of the base pad, so that the mouse pad has a self-cleaning function.

The invention relates to a mouse pad, in particular to an anti-skidding and self-cleaning mouse pad, which belongs to the field of computer accessories. An interlayer is arranged at the bottom of a base pad and has a heating function so that the problem of freezing cold of users when using the mouse pad in winter can be avoided. A sucker is arranged at the bottom of the base pad so that the mouse pad can be prevented from moving along with a mouse. Simultaneously protruding edges are arranged on the upper surface of the periphery of the base pad, so that when the mouse slides to an edge position, the mouse can be blocked by the protruding edges and cannot get away from the mouse pad. Simultaneously a protective film and a photochemical catalyst coating are arranged on the upper surface of the base pad, and the mouse pad has a self-cleaning function.

The invention discloses a visible / infrared compatible self-adaptive camouflage coating. The visible / infrared compatible self-adaptive camouflage coating is in a layered structure and sequentially comprises a base layer, a bottoming layer, a thermal induced infrared emissivity layer and a camouflage pattern layer from inside to outside, wherein the thermal induced infrared emissivity layer is a vanadium dioxide layer. A preparation method of the visible / infrared compatible self-adaptive camouflage coating comprises the following steps: choosing a material of the base layer, coating a bottoming coating on the base layer, obtaining the bottoming layer on the base layer, and using a thermal induced infrared emissivity coating to prepare the thermal induced infrared emissivity layer on the bottoming layer through a coating process; arranging a camouflage pattern on the thermal induced infrared emissivity layer, using an ink-jet printer to print printing inks in different colors on the thermal induced infrared emissivity layer so as to obtain the camouflage pattern layer, and finishing the preparation of the visible / infrared compatible self-adaptive camouflage coating. The vanadium dioxide nano-coating with the thermochromism characteristic and a dye being high in tinting strength are adopted to realize the visible / infrared compatible self-adaptive camouflage performance.

The invention relates to preparation of an artificial super-wetting lotus leaf-shaped Janus film, in particular to a bionic lotus leaf surface microstructure super-wetting film with a super-wetting surface. The method comprises the following steps: carrying out bionic fine modification on the surface of a cured PDMS elastomer by adopting a soft printing technology and carrying out replication andtranscription twice, so as to prepare the super-wetting Janus film similar to a lotus leaf micro-nano structure. The super-wetting surface is constructed on the surface of the PDMS elastomer in a bionic manner, the super-wetting characteristic of the artificial lotus leaf-shaped surface is simulated, and the prepared Janus film has a nano lotus leaf-shaped super-hydrophilic surface and dodecanol modified super-hydrophobicity. The water contact angles of the super-hydrophobic side and the super-hydrophilic side of the Janus film are respectively greater than 150 degrees and 5 degrees, which indicates that the Janus wettability is prepared on one PDMS elastomer.

The invention discloses a nano-mirror, comprising a frame body, glass is arranged in the frame body, a nano-hydrophilic layer is arranged on the surface of the glass, the surface of the nano-hydrophilic layer is a nano-titanium dioxide film, and the surface contact angle of the nano-titanium dioxide film is 1-30 degrees, to solve the problem that the anti-fog degree of the active agent sprayed on the surface of the mirror cannot be adjusted.

The invention discloses a self-cleaning panel lamp. The self-cleaning panel lamp comprises a panel lamp body and a self-cleaning part. The panel lamp body is of a disc type single-face light-emitting structure. The self-cleaning part is arranged on the periphery of the panel lamp body in a surrounding mode, dust cannot be retained on a light-emitting face of the panel lamp body by controlling airflow, the cleanliness of the light-emitting face of the panel lamp body is kept, and then the light-emitting efficiency of the panel lamp body is improved. The self-cleaning part comprises a shell and a fan device. The shell wraps the outer surface of the panel lamp body, and a gap for airflow to pass through is reserved between the shell and the panel lamp body. The fan device is arranged at the end, away from the light-emitting face of the panel lamp body, of the shell. The end, close to the light-emitting face of the panel lamp body, of the shell is provided with a flow baffle extending towards the center of the panel lamp body. The self-cleaning panel lamp provided by the invention has a self-cleaning effect, the panel lamp can automatically clean dust on the light-emitting face of the panel lamp, manual cleaning is omitted, and the situation that the lighting efficiency of the panel lamp is affected due to dust deposition is avoided.

The invention relates to a microbe inoculator with a boron nitride film coating and a preparation method thereof, and belongs to the technical field of biological appliances. The microbe inoculator consists of a handle and an inoculation wire (2) made of a platinum material or an alloy material; and the boron nitride film coating (1) is grown on the surface of the inoculation wire (2). The preparation method comprises the following steps of: using the pretreated inoculation wire (2) as a substrate and hexagonal boron nitride as a target material; and growing the boron nitride film coating (1) on the surface of the inoculation wire (2) by adopting a physical deposition method or a chemical vapor deposition method such as megnetron sputtering, vacuum evaporation, ion plating or pulsed laser deposition. The coating prepared by the invention has low stress, has no crack on the surface, has strong adhesion with the inoculation wire, and is not peeled after being placed in air for long time; multiple-burning experiments show that the BN film coating does not fall off; a sintered and carbonized biological product is easy to wash off from the inoculation wire, is convenient to wash, has light secondary pollution, and can be repeatedly used.

The invention relates to a method for preparing a self-cleaning plastic carpet, which belongs to the technical field of a novel material. The method combines two materials of nano titanium dioxide andchitosan which can synergistically achieve the double-effect sterilization effect; after treatment with an acid solution and a surface modifier, nano-titanium dioxide has hydrophobicity and improvedanti-pollution ability, and at the same time, titanium dioxide has strong photocatalytic ability and can play a certain self-cleaning effect; the method adopts half carbon fiber to replace the original fiber to prepare the carpet, improves the strength of the carpet, utilizes the conductivity of the carbon fiber to diffuse and release the static electricity on the surface of the carpet, reduces the adsorption force on the dust and hair, and facilitates the cleaning. The self-cleaning plastic carpet prepared by the invention has strong self-cleaning ability, can inhibit bacteria and kill bacteria, has no electrostatic adsorption for dust, stains and animal hair, and is hydrophobic and convenient to use.

The invention relates to intumescent fire-retardant coating for a steel structure. The intumescent fire-retardant coating for the steel structure comprises the following raw materials in percent by weight: 20-30% of acrylic resin, 10-15% of tripolycyanamide polyphosphate, 10-15% of pentaerythritol, 10-15% of tripolycyanamide, 5-7.5% of expandable nanographite, 12-18% of carbon fiber, 21.5-3% of nanometer Mg(OH), 6-10% of nanometer TiO2 and 5-8% of a cosolvent. The obtained coating is strong in adhesion to the steel structure, so that the fire resistance of the coating is ensured.