283results about How to "Does not affect transparency" patented technology

The invention relates to the technical field of PVC modified materials and particularly relates to an insulating and environment-friendly PVC modified material and a preparation method thereof. The insulating and environment-friendly PVC modified material contains the following raw materials: 80-120 parts of PVC resin, 40-60 parts of bulking agent, 40-60 parts of plasticizer, 10-15 parts of insulation modifier, 3-7 parts of heat stabilizer and 0.5-1.5 parts of lubricant, wherein the plasticizer is a mixture prepared from dioctyl terephthalate and tri-n-butyl citrate which are in the weight ratio of (5-7): 1; the insulation modifier is a mixture prepared from kaolin, titanium white and glass micro-beads which are in the weight ratio of (2-4): (1.5-2.5): 1, and the particle size of the glass micro-beads is smaller than 20 microns. According to the modified material prepared by the preparation method, all properties exceed the national standards, the insulating property is good, the resistivity reaches up to 5.1*10<14> omega, and the modified material is environment-friendly; the preparation method disclosed by the invention is simple in process, convenient in operation and control, stable in quality and high in production efficiency and can be applied to large-scale industrial production.

The invention discloses a fluoropolymer / inorganic nano-hybrid particle modified ultraviolet photocured paint and a preparation method thereof. The paint consists of ultraviolet photocured substrate resin added with a fluorine-containing acrylate monomer and an active ingredient which is fluoropolymer / inorganic nano-hybrid particles; the preparation process of the hybrid particles comprises the following steps of: firstly, grafting an ATRP evocating agent or an RAFT chain transfer agent on the surfaces of the inorganic nano-particles; and then, performing surface graft polymerization and modification on the inorganic nano-particles to obtain the fluoropolymer / inorganic nano-hybrid particles. The paint has both super-hydrophobic and super-oleophobic functions; and the contact angle reaches between 153 and 175 degrees.

The invention belongs to the technical field of materials, and particularly relates to full-transparence high-strength self-repairing polyurethane elastomer as well as a preparation method and application thereof. The full-transparence high-strength self-repairing polyurethane elastomer comprises carbamate and a disulfide bond structure unit, wherein the structural formula is shown in formula (I):(shown in the description), wherein the disulfide bond is designed and distributed in a hard section area in a split-phase control manner, so that a self-repairing and differential structure adjusting effect can be realized, and the physical and mechanical performance such as the strength and toughness can be improved. Compared with the polyurethane copolymer elastomer comprising the disulfide bond in the prior art, the full-transparence high-strength self-repairing polyurethane elastomer disclosed by the invention is far better in the mechanical strength, toughness, transparence and the likecompared with the traditional polyurethane elastomer.

The invention relates to special resin with high melt strength for foaming of polylactic acid and a preparation method thereof, and belongs to the technical field of macromolecules. The special resin is prepared from the following raw materials in parts by weight: 60 to 95 parts of polylactic acid, 1 to 20 parts of biodegradable copolymer, 0.1 to 1 part of chain expander, 1 to 5 parts of melt enhancer, 0.1 to 5 parts of nucleating agent, and 0.5 to 2 parts of lubricant. The special resin has the advantages and beneficial effects that by improving the melt strength of the polylactic acid and enhancing the adsorbing ability of polylactic acid on CO2 (carbon dioxide), the foaming property of the polylactic acid is enhanced. The used devices are universal devices in the technical field of macromolecules, such as a double-screw extruder, a crystallizing drier and a plastic extrusion foaming machine. The special resin has the advantages that the operation is simple and convenient, the control is easy, the industrialized implementing is easy, and the economic benefit is high.

The invention discloses a transparent two-component organic silicon pouring sealant for LED and a preparation method thereof. The pouring sealant comprises a component A and a component B mixed according to a mass ratio of 1:1. The component A comprises vinyl silicone oil, hydrogen-containing silicone oil and methyl vinyl MQ silicone resin in a mass ratio of 100:5-20:20-50; and the B component comprises vinyl silicone oil and a platinum catalyst in a mass ratio of 100:0.01-1.

The invention discloses a set of flexible microfluid equipment for collecting human body sweat and a sweat collecting and detecting method thereof. The flexible microfluid equipment comprises a base body and a cover plate, wherein the base body is used for providing a module of a passage and a cavity for transmitting and accommodating the sweat, and the cover plate is the semitransparent cover plate used for sealing the base body. The base body comprises a sweat inlet, a sweat outlet and a microfluid passage. The microfluid passage comprises a capillary tube and a microfluid cavity, wherein the capillary tube is used for controlling fluids flowing through the passage in the microfluid equipment, and the microfluid cavity is used for storing the sweat and is provided with a displaying agentinside. The equipment is fixed on the human body, after the sweat enters into the microfluid passage, a + mark on the cover plate is positioned by a mobile software, colors in the microfluid cavity at different positions are scanned, so as to obtain the sweat content at some time; meanwhile, after the sweat collecting is finished, the sweat is extracted from the sweat outlet by an injector, and the sweat is used for storing and conducting medical detection. The equipment is easy in usage, low in raw material and processing cost, capable of being massively produced, and wide in applicability.

The invention relates to a pressure-sensitive adhesive for a polaroid. The pressure-sensitive adhesive for the polaroid comprises 100 weight parts of crylic acid copolymer, 0.1 to 0.5 weight part of isocyanate-based crosslinking agent and 1 to 4 weight parts of hydrophobic ionic liquid, wherein the hydrophobic ionic liquid serves as an antistatic agent and has compatibility with the pressure-sensitive adhesive. The pressure-sensitive adhesive for the polaroid adopts the hydrophobic ionic liquid serves as the antistatic agent, and is optically transparent, durable and reliable.

The invention discloses an organic Li-based bentonite-WPU (waterborne polyurethane) leather finishing agent and a preparation method thereof. The method comprises the following steps: firstly, carrying out organic modification on Li-based bentonite so as to prepare organic Li-based bentonite; and then, dispersing the organic Li-based bentonite into a WPU matrix in nano scale by using a latex commixing or in-situ polymerization method so as to obtain the organic Li-based bentonite-WPU leather finishing agent. In the invention, because quaternary ammonium salts, organic amines, a coupling agentand polyisocyanates are selected to carry out organic modification on Li-based bentonite, the surface microenvironment of a chain-connected silicate layer of the Li-based bentonite and the wetting action (on polymers) of the Li-based bentonite are improved, thereby enhancing the dispersibility of the Li-based bentonite in organic polymers and the compatibility of the Li-based bentonite and the organic polymers, and better facilitating the expression of nano effects; and because the Li-based bentonite with a two-dimensional nanostructure is introduced into the WPU matrix by using a latex commixing or in-situ polymerization method, therefore, due to the unique structure and properties of a nano-clay, while the transparency of a finishing material is not affected, the thermal stability, friction-resistant strength and water vapor permeability of the finishing material can be improved markedly, and the mechanical properties of the finishing material are also enhanced and toughened.

The invention belongs to the field of chemical engineering, and specifically, relates to a composite stabilizing agent for a transparent polyvinyl chloride (PVC) material and a preparation method thereof. The composite stabilizing agent for a PVC material comprises: by weight, 55 to 120 parts of main stabilizing agents, 5.5 to 25 parts of auxiliary stabilizing agents and 1.55 to 3.5 parts of auxiliary agents. The main stabilizing agents comprise: by weight, 50 to 90 parts of one or more organic tin compounds and 5 to 30 parts of one or more rare earth compounds. The auxiliary stabilizing agents comprise: by weight, 1 to 10 parts of one or more phosphite ester compounds, 4 to 10 parts of epoxy soybean oil and 0.5 to 5 parts of beta-diketone compounds. The auxiliary agents comprise: by weight, 1.5 to 3 parts of an emulsifier and 0.05 to 0.5 parts of an antifoaming agent. The composite stabilizing agent for a PVC material has good thermostability, does not influence PVC product transparency, and has certain machinability and lubricity. The preparation method cam greatly reduce a product production cost without change of thermostability through addition of the auxiliary stabilizing agents having relatively low costs, and has good economic benefits.

The invention belongs to the field of tea processing and mainly provides ganoderma lucidum black tea and a processing technology thereof. The problems in the prior art that ganoderma lucidum and tea activated ingredients cannot be effectively combined and absorbed by a human body, the taste and the color are poor, the soup is turbid, and the product quality is difficult to control when spore powder is used (China Food and Drug Administration stipulates that ganoderma lucidum spore powder cannot be used as a common food raw material). The raw materials comprise black tea fresh leaves and ganoderma lucidum granules. The processing technology comprises the procedures: cutting ganoderma lucidum into granules, putting on a steamer and steaming, selecting the black tea fresh leaves, withering the black tea fresh leaves, simultaneously rolling the ganoderma lucidum and the tea, fermenting, drying, extracting fragrance and examining quality. As the ganoderma lucidum black tea is prepared through the mixed fermentation of the ganoderma lucidum and the black tea, the interior quality of the tea is enriched, and the health-care function of the tea is improved. The tea can perform the functions of protecting the liver, nourishing the stomach, calming the nerves, pacifying the mind, brightening the eyes, reducing blood pressure, blood fat and blood sugar, improving body immunity, delaying aging and the like. Besides, the soup is clear, the taste is great, and the black tea variety in China is enriched.

The invention discloses an organic silicon pouring sealant containing functional group MQ resin for an LED and a preparation method of the organic silicon pouring sealant. The organic silicon pouring sealant comprises a component A and a component B, wherein the component A is a mixture of vinyl silicone oil, methyl vinyl MQ resin, functional group MQ resin, methyl silicone oil and a catalyst in a weight rate of 100 to (10-35) to (1-20) to (0-25) to (0.02-2); the component B is a mixture of vinyl silicone oil, methyl vinyl MQ resin, hydrogen-containing silicone oil, methyl silicone oil and an inhibitor in a weight rate of 100 to (10-35) to (10-50) to (0-25) to (0.001-0.02). By virtue of the functional group MQ resin, the adhesion of the pouring sealant to an LED bracket material can be substantially improved, the mechanical property of the pouring sealant can be improved, and furthermore, the transparency of the pouring sealant is not influenced. Meanwhile, the preparation method is simple and convenient, and the industrial production is easily realized.

The invention discloses a room-temperature vulcanized silicone rubber adhesive. The room-temperature vulcanized silicone rubber adhesive comprises the following components in parts by weight: 300-700 parts of hydroxy-terminated polydimethylsiloxane with the viscosity of 750-80000 mPa.s, 300-700 parts of a transparent base material, 60-80 parts of a crosslinking agent, and 0.6-2.5 parts of a catalyst, wherein the transparent base material comprises the following components in parts by weight: 100 parts of hydroxy-terminated polydimethylsiloxane with the viscosity of 500-50000 mPa.s, 15-35 parts of gas phase white carbon black, 5-10 parts of a hydroxyl processor, and 1-2.5 parts of distilling water. The invention additionally discloses a preparation method of the room-temperature vulcanized silicone rubber adhesive. The luminousness of the room-temperature vulcanized silicone rubber adhesive is 93-95%, the average tear strength is 12.99 KN / m, the average tensile strength is 3.38 MPa, the average elongation is 386% and the surface drying time is 4-10 minutes.

The present invention provides a branched poly quaternary ammonium salt (PQAS). The present invention further provides a method for synthesizing the PQAS, wherein branched polyethyleneimine is subjected to an aminomethylation reaction to obtain methylated branched polyethyleneimine, and the methylated branched polyethyleneimine reacts with a halogenated compound to obtain the PQAS. According to the present invention, the method has characteristics of rapidness, efficiency, low cost, simple process and high yield; and the PQAS has the contact type bactericidal capacity, the internal branched structure can embed the guest molecules such as antibiotics, dyes and the like to form the slow release type bactericidal capacity, and the compatibility between the PQAS and the water or resin can be adjusted with different halogenated compounds, such that the PQAS can be used in the fields of antibacterial lotion and material formula, dyeing formulas of plastics, coating materials or films, and the like.

The invention belongs to the field of building materials, particularly relates to an inorganic silicate waterproof agent with depth permeability and filling property and a preparation method of the waterproof agent, and aims to provide a concrete waterproof agent with the depth permeability, excellent filling property and excellent waterproof performance. Soluble sodium silicate water solution serves as a reaction active substance, deionized water serves as a thinning agent, inert silica solution serves as a filling substance, and a catalyst and an ultra-high active fluorocarbon surfactant serves as auxiliary materials. The concrete waterproof agent has high active substance contents, appropriate inert fillers, medium viscosity and low surface tension, so that the concrete waterproof agent is high in permeation capacity and micro-pore filling capacity and can furthest close concrete surfaces, inner micro pores and micro cracks. When the waterproof agent is used, concrete and cement mortar surfaces are treated in a spraying manner, and the pressure-resistant strength and the anti-permeability performance of the waterproof agent can be remarkably improved.

The invention belongs to the field of furniture painting, and relates to an enclosed antique painting technology for a deep wood grain base material. The painting technology includes the following steps that base material treatment is conducted; a water-based putty layer is smeared; water-based woodware sealing primer is sprayed; water-based glaze is rubbed; water-based woodware primer is sprayed; surface priming is conducted; and water-based woodware finish paint is sprayed. The deep wood grain base material refers to fraxinus mandshurica wood, rubber wood and the like. The enclosed antique painting technology for the deep wood grain base material has the advantages that sinking of paint films is effectively prevented, transparency of the paint films is not influenced, a better sealing effect is achieved, cost is reduced, and meanwhile the enclosed antique painting technology is more environmentally friendly.

The invention discloses a silicon fluoride self-cleaning glass nano-material, which is composed of solvent and active ingredients; the active ingredients are fluorinated modified silicone nano-particles, and the reaction raw materials comprise ortho-silicon ester and fluorine modified alkyl silane, with the ratio volume and dosage reaching 1.5-3:0.15-1.8. The invention also discloses a manufacturing method for the silicon fluoride self-cleaning glass nano-material, comprising two steps: synthesizing the surface modification of silica nano-particles, silica nano-particles; the ratio between volume and dosage for each added reactant is as follows: solvent: water: ortho-silicon ester: fluorine modified alkyl silane equals to 100: 1.5-3: 1.5-3: 0.15-1.8. The invention has simple production process, stable product performance, higher storage stability, excellent chemical properties, low surface energy and good tolerance against pollution, which is used for glass surface treatment; the contact angle between water and coating is greater than 110 degrees.

The invention relates to a high-transparency high-temperature-resistance polylactic acid composite material and a preparation method thereof, belonging to the technical field of high-polymer materials. The polylactic acid composite material is prepared from the following raw materials in percentage by mass: 85-99% of polylactic acid, 0.1-10% of toughener, 0.1-2% of crystallization nucleator, 0.1-2% of hydrolysis-resistant stabilizer and 0.1-1% of lubricant. The method improves the flexibility of the polylactic acid, further enhances the transparency and temperature resistance of the polylactic acid, and improves the hydrolytic stability of the polylactic acid. Compared with the pure polylactic acid, the composite material has the advantages of favorable transparency (the light transmittance is at least 90%), low fog degree (at most 3.5), high temperature resistance, high heat-deformation temperature (at least 100 DEG C), favorable toughness and high mechanical strength, and can substitute the conventional plastics for use. The preparation method is simple and easy to implement.

The invention discloses a low-viscosity and high-strength transparent organic silicon compound. The low-viscosity and high-strength transparent organic silicon compound comprises the following raw materials in parts by weight: 60-90 parts of end alkoxy polydimethyl siloxane, 10-40 parts of end methyl polydimethyl siloxane, and 20-80 parts of end alkoxy methyl MQ silicon resin, wherein the end alkoxy polydimethyl siloxane is a direct-chain type polymer with two or three hydrolysable groups in the end group; the structure formula of the end alkoxy methyl MQ silicon resin is as shown in the specification, wherein b is 0 or 1, R3 and R4 are monovalent hydrocarbyl with 1-4 carbon atoms; t, m and p are positive integers, (t+m) / q is 0.7-1.50, t / m is 0.04-0.20. The organic silicon compound provided by the invention has the advantages of low viscosity, easy flow, high strength and good transparency, and is very suitable for the shallow encapsulation of the electronic elements such as a circuit board and an intelligent water meter, the adhesion of the LED illuminator lampshade and the lamp holder, the bonding and sealing of the small household appliances such as a glass electric kettle body and a chassis.

The invention belongs to the field of polymer materials, and particularly relates to a PLA (polylactic acid) biodegradable thin film and a preparation method thereof. The PLA biodegradable thin film is prepared from the following components of PLA, PBSA (poly(butylene succinate-co-adipate)), PBC (polypropylene carbonate), a plasticizer, a lubricant and a pore forming agent. The preparation methodcomprises the following steps of mechanically mixing the PLA, the PBSA, the PBC, the lubricant and the pore forming agent; adding the mixed raw materials into a material hopper of a double-screw extruder; metering the plasticizer by a metering pump, adding via a liquid adding port of the extruder, starting the solid charge and liquid charge, smelting, extruding and granulating, so as to obtain thePLA resin material; performing blow molding and film forming on the PLA resin material, so as to obtain the PLA-based thin film. The PLA-based thin film has the advantages that the mechanical property is better, and the transparency is good; the complete biodegradable effect is realized; the PLA-based thin film can be used for replacing PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride) and the like to prepare thin films and sheets.

The invention provides a pressure sensor and a preparation method and use thereof. The pressure sensor comprises a dielectric layer, a first electrode layer and a second electrode layer; the first electrode layer and the second electrode layer are located at both sides of the dielectric layer respectively, and the dielectric layer comprises an ionic active material. The preparation method comprises the steps of 1) preparing the dielectric layer, wherein the dielectric layer comprises the ionic active material; 2) preparing the first electrode layer and the second electrode layer; 3) fixing thefirst electrode layer and the second electrode layer to both sides of the dielectric layer respectively to obtain the pressure sensor. The sensor has the advantages of flexibility, high transparencyand high sensitivity, and can be applied to manufacturing flexible touch sensors or human-computer interaction interfaces or the like.

The invention relates to an anti-static thermoplastic elastomer composite and a preparation method thereof, wherein raw materials comprise the following ingredients in parts by weight: 25-50 styrenic block copolymer resin, 30-60 rubber process oil, 0-40 polyolefin, 0-50 inorganic mineral filler, 0.2-0.6 antistatic agent and 0.1-0.3 antioxygen, all the ingredients are sequentially added in a high-speed mixer to be mixed at high speed, then are placed in a double-screw extruder to be extruded and granulated, so the product is obtained. Compared with the prior art, an electric conduction channelcan be built in a polymer for bringing charges to a ground wire, the antistatic agent can be transferred to the product surface to form a layer of hydrophilic substance, water in the air is absorbed to form the electric conduction channel, so that the electrical conductivity of the product surface can be improved, the product transparency cannot be influenced, meanwhile, the product can be configured into various colors, and the adopted raw materials have lower costs and simple technology, so the composite provided by the invention is applicable to mass production.

The invention discloses a hollow capsule, which comprises the following components in parts by weight: 10 to 30 parts of kappa-carrageenan, 90 to 180 parts of water-soluble crosslinked starch, and 20 to 40 parts of plasticizer. The invention also discloses a preparation of the hollow capsule, which comprises the following steps of: 1) dissolving gum, wherein carrageenan and water-soluble crosslinked starch are stirred, water at a temperature of between 70 and 90 DEG C is added into the mixture, the plasticizer in the amount of the prescription is added and completely dissolved, and the mixture is stirred uniformly; 2) culturing the gum, wherein the gum liquid obtained in the step 1) is cooled to a temperature of between 40 and 45 DEG C, the gum liquid is insulated and stood for 30 to 60 minutes, and the gum liquid is put into a gum soaking tank; and 3) soaking the gum, wherein when the temperature of the gum liquid in the gum soaking tank is cooled to 35 DEG C, operations of gum soaking, drying, shell pulling out, cutting and buckling are automatically carried out through a capsule template. According to the hollow capsule disclosed by the invention, the transparency and toughness are remarkably improved, the friability is remarkably reduced, and the product yield is greatly increased.

The invention provides a method for manufacturing an intelligent transparent and conductive fabric based on composite modification of nanoparticles and nanowires. The method comprises the following steps: putting ethylene glycol into polyvinylpyrrolidone of a high molecular weight, stirring violently till the polyvinylpyrrolidone is completely dissolved, adding copper chloride, sealing, performinga heating reaction, further adding a silver nitrate solution, shielding light, stirring violently, heating in an oven, and cleaning so as to obtain a mixed solution of silver nanowires and silver nanoparticles; putting a conductive polymer, silicon nanowires and graphene into the mixed solution of the silver nanowires and the silver nanoparticles, and uniformly mixing so as to obtain a transparent conductive solution; pretreating and cleaning the surface of a fabric, performing waterproof coating treatment, further coating the fabric with the transparent conductive solution, and finally performing surface treatment, namely spraying sodium borohydride, so as to obtain a transparent conductive coating modified fabric; adhering a Fe-N-C porous particle layer to the transparent conductive coating modified fabric, thereby obtaining the intelligent transparent and conductive fabric based on composite modification of nanoparticles and nanowires.

The invention provides a polyolefin film capable of being degraded completely and a manufacturing method thereof. The polyolefin film consists of the following components in percentage by weight: 10 to 80 percent of low density polyethylene; 0 to 40 percent of metallocene linear low density polyethylene; 0.5 to 5.0 percent of prodegradant; and 0 to 60 percent of ethylene vinyl acetate copolymer. The preferred prodegradant is a composition consisting of tripotassium trioxalatoferrate, ferrous pyrophosphate, aluminic ester, low density polyethylene and ferrous biglycinate chelate. The polyolefin film of the invention can be degraded completely, has the advantages of easy processing and lower manufacturing cost, and can obtain excellent transparency.

The invention belongs to the technical field of materials, and particularly relates to a high-transparency polyether type double-mirror TPU (thermoplastic polyurethane) thin film and a preparation method for the same. The TPU thin film is prepared from the following components in parts by weight: 100 parts of TPU resin, 0.1 to 0.8 part of antioxidant, 0.1 to 1.8 part of light stabilizer and 0.01 to 0.05 part of processing lubricant. The preparation method comprises the following steps: adding each component into a stirring machine for uniform mixing according to the using amounts in the formula, then pumping the components into a dehumidification dryer for drying, and then performing extrusion casting, mirror counter-compression, cooling, shearing and compression winding to obtain a high-transparency polyether thin film product. The process difficulties of poor transparency, plasticization non-uniformity, high fisheye formation rate and high roller sticking rate are overcome, the productivity is improved, and the high-transparency polyether type double-mirror TPU thin film prepared by the invention has the characteristics of uniform thickness, high transparency, high surface glossiness, yellowing resistance and the like.

The invention discloses toughened polylactic acid capable of being used for rapid forming and a preparation method thereof. The modified polylactic acid is prepared through the method which includes the steps that polylactic acid and a toughening agent are dried respectively and then fully mixed in proportion, and the toughened modified polylactic acid is obtained after melt blending and extrusion. The modified polylactic acid can overcome the defect that polylactic acid is prone to brittle failure, the transparency and tensile strength of polylactic acid are not affected, the process is simple, implementation is easy, and the toughened polylactic acid is suitable for being used as a 3D printing consumable.

The invention discloses color printing ink for printing heat shrink film labels and relates to environmental-friendly ink. The color printing ink comprises the following components: acrylic resin, nitrocotton, VINISOL OH, CAB (Cellulose Acetate Butyrate) resin, EVA (Ethylene Vinyl Acetate) resin, a color pigment, additives and a diluent, wherein the additives are polyethylene wax and fumed silica. Compared with the prior art, the color printing ink for printing the heat shrink film labels, disclosed by the invention, has the advantages that the color printing ink is free of benzene and ketone, resists tetrahydrofuran and can be applied to PVC (Polyvinyl Chloride), PET (Polyethylene Terephthalate), OPS (Oriented Polystyrene) heat shrink film base materials, and after the color printing ink is matched with heat shrink films for printing, the shrink films do not curl and are free of tinting. The products printed by adopting the color printing ink are in line with environment-friendly requirements, are safe and non-toxic and can be recycled; and after printing, the shrink films have very strong capability of resisting alcohol and tetrahydrofuran, thus the problem of the compatibility between the thin films and glue occurring when the thin films are subjected to skin packaging and are glued is solved very well.

A hydrophobic superfine powder has an original diameter of 5-100 nm, a soft conglomeration diameter less than 300 nm and the hydrophobic groups wrapping on the surface of particle by chemical bonds. It is prepared through dispersing the nano particles in medium, adding silane surfactant, reacting, removing the dispersing meidum and drying. Its advanrtages are high transparency and mechanical strength, and firm combination between hydrophobic group and particle.

The invention discloses an automatic ventilating window for noise prevention of a high-rise building. The automatic ventilating window comprises a sill and a window body. The sill comprises an upper sill body and a lower sill body. The window body is rotationally connected with the upper sill body through a pin shaft. The window body is fixedly connected with a pushing handle, and a groove block is arranged on the portion, close to the window body, of the sill. The groove block and the window body are matched with each other and clamped, an electric box is fixed to the inner wall of the lowersill body, and a conductive device is arranged in the electric box. The window body is composed of interlayer glass and a cavity. Two transparent conducive films are glued on the two symmetric bottomfaces of the cavity correspondingly, and a parallel plate capacitor is formed with air in the cavity as a medium. The automatic ventilating window has the advantages that before noise enters the window, the parallel plate capacitor formed by the two conductive films is charged under the action of piezoelectric ceramics, a magnetic field is generated in the cavity under the action of a guide wire of a spiral structure, and therefore oxygen moves; and in the state of breaking down the cavity, the oxygen is released through expansion, and the oxygen ingredient in indoor air is supplemented.

The invention relates to a scratch-resistant and high-transparent polycarbonate composite material and a preparation method thereof. The scratch-resistant and high-transparent polycarbonate compositematerial comprises the following raw material components in part by weight: 80-100 parts of polycarbonate, 10-20 parts of flame retardant, 10-20 parts of scratch-resistant agent, 10-15 parts of filler, 0.5-1 part of dispersant and 0.2-1 part of anti-dripping agent. According to the scratch-resistant and high-transparent polycarbonate composite material and the preparation method thereof, by addinga nano-wire with a large length-diameter ratio as the scratch-resistant agent, the influence on the transparency of polycarbonate can be reduced; the prepared polycarbonate composite material has good scratch-resistant effect and good transparency and good material safety, meanwhile, the wear resistance and mechanical property are improved, the scratch-resistant and high-transparent polycarbonatecomposite material can be widely used in the fields of home appliances, automobiles and electronic equipment. When the scratch-resistant and high-transparent polycarbonate composite material is prepared by the invention, twin-screw extrusion equipment is adopted, the flow process is simple and continuous, and the obtained product is stable in quality.