85results about How to "Humidity has little effect" patented technology

The invention discloses a preparation method of a single-component adhesive suitable for a high-speed railway sliding layer. The method comprises the following steps: synthesizing a polyurethane prepolymer under certain conditions by utilizing the combination of polyether glycols with different degrees of functionality and isocyanates with different degrees of functionality in a certain proportion; and compounding the synthesized prepolymer with plasticizer, inorganic filler, latent curing agent, organosilicon coupling agent, wetting dispersant and catalyst in a certain proportion, thus obtaining the environmental-protection solvent-free single-component polyurethane adhesive. Though the combination design on the polyether glycols with different degrees of functionality and polyisocyanates with different degrees of functionality, combination design on inorganic filler, and selection on specific coupling agent, the adhesive prepared by the method has high mechanical properties, high adhesive force for various base materials, such as waterproof layers, concrete surfaces, high-strength extruded sheets and the like, outstanding acid and alkali resistance, favorable weatherability and good operability, and can be used immediately after the adhesive is unpacked without premixing.

The invention discloses a lasting and effective antistatic polyolefin composite material. The lasting and effective antistatic polyolefin composite material comprises, by weight, 70-99 parts of polyolefin resin, 0-30 parts of packing, 0-6 parts of compatilizer, 0.5-5 parts of ionic liquid antistatic agent and 0.2-0.5 part of anti-oxygen. The invention further discloses a preparation method of the lasting and effective antistatic polyolefin composite material. The lasting and effective antistatic polyolefin composite material is low in additive amount of the antistatic agent, superior in antistatic performance, the surface resistance can reach 108-1,011 ohm, and the lasting and effective antistatic polyolefin composite material is little influenced by the temperature and humidity, is lasting in antistatic performance and is capable of being applied to various fields with antistatic and dust-free requirements.

The invention discloses an air water producing machine. The air water producing machine comprises a dehumidification and condensation water producing device, a water storage tank for collecting condensed water, a condensed water sterilization device and a controller, wherein the dehumidification and condensation water producing device comprises a compressor, a condenser, an evaporator, and a first air blower which conveys air to the evaporator, wherein the first air blower is positioned outdoor; and the air inlet of the first air blower is communicated with outdoor atmosphere. The air water producing machine has high water producing efficiency and air conditioning and refrigerating effects; the energy resource utilization efficiency is improved; and the influence on indoor air humidity is low.

The present invention relates to a method for preparing a permanent antistatic agent. The method has the following characteristics: along with 0.1 to 5 mass portions of catalyst and 0 to 1000 mass portions of solvent, aromatic diester or aromatic diacid coupled with estolide compound thereof and ether alcohol compound are added into a reaction kettle provided with a thermometer, a stirrer and a reflux condenser according to a molar ratio of 1 : 1 to 2.5 to react under a temperature between 50 DEG C and 350 DEG C for one to twenty four hours, so that aromatic ester provided with a benzene ring and a polyether structure is synthesized; aromatic ether ester compound is obtained after the solvent and the unreacted monomers are removed; according to a mass ratio of 1 : 1 to 30, alkali metal salt and the compound are mixed so that the aromatic ether-ester permanent antistatic agent is produced. Even under a low humidity level, the aromatic ether-ester permanent antistatic agent can keep a good antistatic effect and can plasticize various polymer materials. The aromatic ether-ester permanent antistatic agent is used for the antistatic modification of general-purpose plastics and anti-corrosion, acid-and-alkali-resisting, anti-static and flame-retarding wind tubes, conveyer belts and gas-pumping-and-exhausting tubes used by coal mines, dust-free computer rooms, antistatic floorings, packages or lithium ion batteries.

The invention relates to a novel resistive plate chamber detector and belongs to the technical field of radiation detection. A polyethylene tube sleeving a nylon wire is fixed between two parallel pieces of resistive glass, a graphite layer and a circuit board at the outer sides of the glass are insulated and separated from each other by a Mylar membrane, and a honeycomb plate for supporting and fixing is connected to the outer side of the circuit board. The novel resistive plate chamber detector is put in an airtight gas flow box in working. The resistive plate chamber detector does not comprise a traditional sealing gasket and thus is free of the problem of glue failure, and a detection dead region caused by the novel resistive plate chamber detector is smaller than that caused by the sealing gasket, and moreover, the novel resistive plate chamber detector is better in air gas uniformity.

The objective of the invention is to provide a refrigerator that is structured such that even a plurality of purification function mechanisms are arranged in an cold air circulation path, the conditions that cooling performance decreases and the cost improves can not occur and the deodorizing and degerming performances can be improved. The refrigerator (1) performs a circulation using a mode of firstly supplying the cold air generated by a cooler (7) through to a refrigerating chamber (2) by a fan (8), thereafter returning to the cooler. A deodorizing and degerming device (18) with a plurality of purification function mechanisms (16), (17) is arranged in the cold air circulation path. The plurality of purification function mechanisms (16), (17) employ functional materials which have deodorizing and degerming or integrated performances on a support body with ventilation performance, which is characterized in that the multiple purification function mechanisms have deodorizing and degerming functions and inner air quantity different from one another, and the mechanisms are parallely installed relative to the cold air flow in the circulation path.

The invention discloses a moisture-resistant and heat-resistant high-strength silicone structural adhesive special for photovoltaic assemblies. The moisture-resistant and heat-resistant high-strengthsilicone structural adhesive special for the photovoltaic assemblies consists of an A component and a B component according to a volume ratio of 10:1, wherein the A component consists of hydroxyl-terminated polydimethylsiloxane, a thixotropic agent, a reinforcing filler, a heat-resistant filler and a plasticizer; and the B component consists of methyl-terminated polydimethylsiloxane, pigment carbon black, a silane coupling agent, an active hydrogen blocking agent, a crosslinker , a catalyst, an antioxidant, a light stabilizer, and a deep curing agent. According to the moisture-resistant and heat-resistant high-strength silicone structural adhesive special for the photovoltaic assemblies, the problem that currently strength of a silicone structural adhesive decreases after damp-heat aging is solved; and the moisture-resistant and heat-resistant high-strength silicone structural adhesive special for the photovoltaic assemblies is applicable to the fields of structural bonding of double glass assembly back tracks, and between hanging buckles and glass, and bonding and sealing of photovoltaic assembly frames, and junction boxes, etc.; and the structural adhesive has high strength, excellent heat and humidity resistance and adhesion, and can play a structural adhesive role.

The invention relates to a fiber sensor-based self-powered bridge damage condition real-time monitoring device and belongs to the technical field of real-time embedded monitoring control. The fiber sensor-based self-powered bridge damage condition real-time monitoring device comprises a photoelectric detection circuit, a signal amplifying and bandpass filtering circuit, a data conversion module, a data wireless transmission module, a remote monitor center, an environmental energy acquisition module, a fiber sensor module, and a GPRS (general packet radio service) data transmission terminal. Energy consumption of the whole device can be effectively reduced, acquired information is transmitted through optical signals with no influence from electromagnetic interference and little influence from ambient temperature and humidity, the sensor is good in stability and high in reliability, the technique is simple to implement and low in price, the device is reasonable in composition and may be self-powered through environmental energy, and the device is convenient to perform, safe and reliable, low in cost, and economical and environment-friendly; moreover, the device has good economic universality.

The invention discloses a hydroxypropyl methylcellulose hollow capsule and a production process thereof. The glue solution of the hollow capsule is prepared from the following components: 120.0g of hydroxypropyl methylcellulose HPMC, 3.5g of carrageenan, 10.0g of titanium dioxide mother liquor, 0.08g of lauryl sodium sulfate, 530.0g of pure water and 0-0.15g of pigment. The production process comprises the following steps: preparing the titanium dioxide mother liquor; preparing HPMC sol; adding pigment into the glue solution; dipping glue, baking, demolding, cutting, registering, inspecting, packaging and putting in storage. The preparation process is simple and strong in operability, the capsule product has good molding property, high safety, good reliability and low water content, effectively takes the curative effect of content, is stable in molecule transmission, does not perform crosslinking reaction with the content, is sufficient in solubility, is little impacted by external temperature and humidity, has long preservation period, and is convenient for transporting and storing.

The invention discloses a biaxially-oriented polyester film, which is composed of an upper surface layer, a core layer and a lower surface layer, wherein the middle core layer is composed of polyesterchips; the upper surface layer is an anti-stick layer, and is composed of a glass microbead anti-stick masterbatch and the polyester chips; the lower surface layer is an antistatic layer composed ofan antistatic masterbatch and the polyester chips. The biaxially-oriented polyester film adopts single-sided antistatic treatment, compared with a conventional film coated with a surface antistatic layer, the biaxially-oriented polyester film is less affected by environmental humidity and has a long antistatic effect; in addition, the small particle size glass microbead anti-stick masterbatch is used to reduce the haze of the film and improve the optical properties of the film under the condition of ensuring the normal winding of the film.

The invention discloses a Pt / g-C3N4 / AC functional carbon adsorbing material and a preparation method and application thereof. The thermocatalytic function of precious metal Pt, the photocatalytic function of polymer g-C3N4 and the strong adsorption function of activated carbon are organically combined to prepare an efficient carbon adsorbing material Pt / g-C3N4 / AC with adsorption-thermocatalytic-photocatalytic function, the carbon adsorbing material Pt / g-C3N4 / AC has good effect when being used for purifying pollutant. The application area of g-C3N4 is expanded, and the quality and the application range of the activated carbon are improved. The existence of the activated carbon improves the dispersity of g-C3N4 and improves the catalytic activity of the g-C3N4; the existence of the g-C3N4 improves the adsorption performance of the activated carbon; the existence of the precious metal Pt promotes the thermocatalysis property. The Pt / g-C3N4 / AC has good effect while adsorbing and degrading volatile pollution gas, the gas humidity influence is small, and the in situ photocatalytic regeneration is realized.

A spray method for reparing the isulating layer at the connection position bewteen two insulating pipes includes such steps as blasting sand, treatnig the surface, brushing the priming paint, spraying polyurethane foam, and spraying polyurea paint.

The invention discloses a processing apparatus for a medical polymer splint, and a processing method thereof, and belongs to the field of medical health device. The processing apparatus provided by the present invention comprises a winding disk, a belt conveyor provided with a stepping motor, an upper roller and a lower roller. One end of the belt conveyor is provided with a cutter apparatus, wherein the cutter apparatus is connected with the stepping motor through PLC control. The processing apparatus is further provided with a felt adhesion apparatus. The processing method provided by the present invention comprises the following steps that: a, base cloth passes through glue coating equipment and is winded after being soaked into the glue, b, the lower felt, the base cloth and the upper felt are sequentially covered on the belt conveyor, c, belt conveying is performed according to a certain step length, isometric cutting is performed under the PLC control, then the steps of seaming and sealing are performed to obtain the finished product. According to the processing apparatus and the processing method provided by the present invention, the customized cutting and the automation are realized, the product quality is ensured, and the yield of the product and the work efficiency are improved.

The invention belongs to the related technical field of solar energy conversion and utilization equipment, The invention discloses a solar semiconductor air conditioning umbrella based on thermoelectric refrigeration and direct evaporation refrigeration. The air conditioning umbrella comprises a base, a plurality of pulleys, an umbrella rod, an air outlet pipe, a refrigeration assembly and an umbrella surface. The umbrella rod is vertically arranged, one end of the umbrella rod is connected with one side of the base, and the other end of the umbrella rod is connected with the umbrella surface;The refrigeration assembly is arranged in the base, and is used for refrigerating the air and transmitting the cooled and humidified air to the air outlet pipe. One end of the air outlet pipe is connected with the base, and is positioned directly below the umbrella surface; The air outlet pipe is used for ejecting the air after the cooling and humidification, and the air outlet direction and thewind speed are adjusted by 360 DEG by rotation to meet the cooling in the predetermined space of the umbrella surface. The invention improves the refrigeration effect, has strong practicability, and is energy-saving and environment-friendly.

The invention relates to a polyurethane plastic material, which is prepared from the following raw materials by mass: 35-55wt% of polyether polyol; 7-15wt% of isocyanate; 10-20wt% of a plasticizer; 15-25wt% of an inorganic filler; 1-3.0wt% of a colorant; 0.5-2.0wt% of a wetting dispersant; 0.1-3.0wt% of an antioxidant; 1-5wt% of oxazolidine; and 0.1-2wt% phosphoric acid. The invention also discloses a preparation method of the polyurethane plastic material, and the method comprises the following steps of: (1) adding polyether polyol and additives into a reaction kettle, performing dehydratinguntil the water content of the system is lower than 0.05%, and conducting cooling; (2) adding isocyanate, carrying out reaction for 2-3h, and carrying out dehydration and cooling; (3) adding oxazolidine and phosphoric acid; and (4) uniformly mixing the product with water and a catalyst, and conducting flattening and curing to obtain the polyurethane plastic material. The polyurethane plastic material prepared according to the invention has a stable micropore structure and unshrinkable foam pores, is convenient to construct and has low requirements on construction conditions.

The invention discloses a gas detection device and a gas detection method based on a smartphone and a dyeing sensing array. The gas detection device is arranged in a matched shell of the smartphone and is controlled by corresponding application software; the gas detection device comprises an air pump for providing air-sensitive reaction for gas detection, a chip, a clamping slot for insertion of the chip, a gas inlet and outlet pipeline connecting the air pump and the chip, a detection light source, a light guide plate, a lens, a camera and a power supply, wherein the air pump is electrically connected with the power supply which is electrically connected with the light source, multiple air-sensitive dyes are formed on a porous substrate to manufacture a dyeing array and the dyeing array is encapsulated to manufacture the chip, and the light source acts on the dyeing array on the chip under the action of the light guide plate and is reflected on the camera by the lens. Due to the above mode, the gas detection device can detect multiple toxic gases, and has the advantages of high sensitivity, simplicity in operation, low detection cost, good portability and low influence on the environment humidity.

The invention discloses an ethylene gas embedding material with slow release performance and an embedding method. The embedding method comprises the steps: putting cucurbituril into a high-pressure reaction kettle, wherein the adding amount of the cucurbituril is 10% to 40% of the volume of the reaction kettle; vacuumizing the reaction kettle; introducing ethylene gas, wherein pressure intensity is controlled as 0.1 to 2.0Mpa; reacting for 8 to 48h under 15 to 35 DEG C; opening an air outlet valve of the reaction kettle after reaction finishes and absorbing unabsorbed ethylene to obtain an ethylene embedding product with the slow release performance. Tests show that the content of ethylene in the obtained product can reach 9.3% (w / w) or more, and the ethylene can be continuously released for 720h under 25 DEG C. To an ethylene adsorption technology, the method has the advantages of simpleness, high efficiency and low cost; composite can exist stably; the product has a wide applicationprospect in the field of controlled-atmosphere refreshment of fruits and vegetables.

The invention relates to a two-component polyurethane waterproof coating. The two-component polyurethane waterproof coating is prepared by mixing a component A and a component B in a mass ratio of 1:1to 1.5; the component A is mainly made of, by mass, 40 to 100 parts of polyether polyol, 30 to 60 parts of isocyanate and 0.7 to 8 parts of modifier; the component B is mainly made of, by mass, 15 to20 parts of water, 0.5 to 1 parts of dispersant, 0.5 to 2 parts of antioxidant, 0.1 to 1 part of CO2 absorbent, 3 to 10 parts of plasticizer, 0.1 to 1 part of leveling agent, 30 to 55 parts of fillers and 0.1 to 1.5 parts of defoaming agent. The polyurethane waterproof coating has no addition of organic solvents and no pollution to the environment, is harmless to the health of staff in productionand construction, and has excellent tensile strength, elongation at break, tear strength, flexibility at low temperature and heat resistance; a paint film is less affected by the humidity of the environment and can be quickly cured, and the construction performance is good.

The invention relates to a positive ion-free radical mixed photopolymerisable lithographic plate printing plate material based on vinylpyrrolidone copolymer resin which is suitable for exposure in laser with 350nm-450nm wavelength, is capable of being developed through water, and is used in a CTP (computer-to-plate) technology. The positive ion-free radical mixed photopolymerisable lithographic plate printing plate material comprises a supporter and a photosensitive layer on the supporter, the photosensitive layer comprises the following components by mass percentage: 10-80% of film-forming resin, 19-70% of hybridization mixed polymerized photosensitive compound, 0-70% of diluents, 0.1-30% of polymerization initiating system, and 0.1-15% of coloring background dye. The hybridization mixed polymerized photosensitive compound is a product of reaction of a vinyl ether compound (a) with hydroxyl in the molecule with a diisocyanate compound (b) and a methacrylate compound (c) with hydroxyl in the molecule or an acrylate compound with the hydroxyl in the molecule.

The invention discloses a gas detection device and a gas detection method based on a smartphone and a dyeing sensing array. The gas detection device is arranged in a matched shell of the smartphone and is controlled by corresponding application software; the gas detection device comprises an air pump for providing air-sensitive reaction for gas detection, a chip, a clamping slot for insertion of the chip, a gas inlet and outlet pipeline connecting the air pump and the chip, a detection light source, a light guide plate, a lens, a camera and a power supply, wherein the air pump is electrically connected with the power supply which is electrically connected with the light source, multiple air-sensitive dyes are formed on a porous substrate to manufacture a dyeing array and the dyeing array is encapsulated to manufacture the chip, and the light source acts on the dyeing array on the chip under the action of the light guide plate and is reflected on the camera by the lens. Due to the above mode, the gas detection device can detect multiple toxic gases, and has the advantages of high sensitivity, simplicity in operation, low detection cost, good portability and low influence on the environment humidity.

The invention relates to a barrier coating film without a prime coat and a preparation method thereof. By improving barrier coating liquid, a PVOH product having better barrier performance is added inPVDC latex, barrier performance (less than or equal to 2cc / m<2>, 24 hr) is increased, a polymerization technology is adjusted, the barrier coating film without the prime coat is finally prepared, under prerequisite that obstruct effect is good, a film prime coating process is reduced, an organic solvent generated during production can be avoided, and residual risk of a product solvent cannot be generated.

The invention provides an antistatic protective film which comprises a stripping layer, a silica gel layer compounded on the stripping layer, a UV (Ultraviolet) layer compounded on the silica gel layer, a substrate layer compounded on the UV layer, an acrylic adhesive layer compounded on the substrate layer and a release layer compounded on the acrylic adhesive layer; the UV layer is made of a material comprising an acrylic monomer, a prepolymer, a photoinitiator and an antistatic agent. The UV layer is formed after the antistatic agent is mixed with a UV adhesive, can achieve an antistatic effect through reducing the volume resistance of the material, is less affected by environmental humidity and also has less influences on the performance of the protective film self. In addition, even if an outermost layer is not coated with the UV layer in the antistatic protective film, a better antistatic effect can also be achieved. Experimental results show that the surface resistance of the protective film provided by the invention can reach 109 ohms. The invention further provides a preparation meted of the antistatic protective film.

The invention discloses an efficient and stable all-inorganic perovskite battery and a preparation method thereof. Compared with the existing perovskite battery, the battery has an interface modification layer between an absorption layer and a hole transport layer. In comparison with an unmodified CsPbI2Br light absorbing layer, the preparation method mainly adjusts the all-inorganic perovskite absorption layer preparation process, a well-prepared anti-solvent solution is dripped during a high-speed spin coating stage of absorption layer preparation, DPP-DTT polymer in the anti-solvent solution and CsPbI2Br in the perovskite absorption layer can be interlaced and composited, the DPP-DTT polymer can thus modify the CsPbI2Br light absorbing layer, and the surface of the light absorbing layeris dense, hydrophobic and has few defects; by controlling the addition time and the addition amount of the anti-solvent solution, the interface modification layer can be formed on the upper part of the light absorbing layer; and due to the characteristics, the battery prepared by the film is high in efficiency and is less affected by humidity during use and storage, the performance can thus be kept in a long time, and conditions are created for application in the market.

The invention provides an ethylene-ethylene vinyl alcohol copolymer / phosphorylated soybean isolated protein intercalated montmorillonite barrier packaging membrane which is a composite membrane of phosphorylated soybean isolated protein intercalated montmorillonite and ethylene-ethylene vinyl alcohol copolymer, wherein the mass of the phosphorylated soybean isolated protein intercalated montmorillonite in the membrane accounts for 1-7% that of the ethylene-ethylene vinyl alcohol copolymer; the mass of the montmorillonite in the phosphorylated soybean isolated protein intercalated montmorillonite accounts for 20% that of the soybean isolated protein, and the mass of sodium tripolyphosphate accounts for 3% that of the soybean isolated protein. The water vapor penetration constant of the composite barrier membrane is less than 3.5*10<6> g / (md atm) and lower than that of the ethylene-ethylene vinyl alcohol copolymer membrane which is 4.13*10<6> g / (md atm), and the oxygen penetration constant is less than 1.15*10<4>cm<3> / (md atm) and lower than that of the ethylene-ethylene vinyl alcohol copolymer membrane which is 1.25*10<4>cm<3> / (md atm); besides, the influence of humidity on the barrier performance of the composite membrane obviously smaller, and better convenience is provided for application of the ethylene-ethylene vinyl alcohol copolymer / phosphorylated soybean isolated protein intercalated montmorillonite barrier packaging membrane to food packaging.

The invention discloses an air water producing machine. The air water producing machine comprises a dehumidification and condensation water producing device, a water storage tank for collecting condensed water, a condensed water sterilization device and a controller, wherein the dehumidification and condensation water producing device comprises a compressor, a condenser, an evaporator, and a first air blower which conveys air to the evaporator, wherein the first air blower is positioned outdoor; and the air inlet of the first air blower is communicated with outdoor atmosphere. The air water producing machine has high water producing efficiency and air conditioning and refrigerating effects; the energy resource utilization efficiency is improved; and the influence on indoor air humidity is low.

The invention discloses a polyethylene terephthalate (PET)-based composite material capable of sensing stress variation. The composite material comprises a conductive phase functional component and a PET-based material, wherein the conductive phase functional component accounts for 6 to 80 percent of the mass of the PET-based material. The invention also discloses a preparation method of the material. The composite material has the advantages of good deformation coordination performance, high compatibility with a bituminous mixture, stable electrical resistivity, high force-electricity coupling effect sensitivity, strong reversibility and low moisture influence, and the electrical signal test is hardly affected by substrate polarization. The composite material can be applied to stress / strain monitoring of bituminous concrete structures such as road pavements, bridge deck pavements and airport runways, and can also be applied to monitoring of stress / strain in other fields.

The coated red medicine tablet is prepared with the medicinal material including notoginseng, Chuanxiong rhizome, white atractylodes rhizome, angelica, ground beetle and safflower; and supplementary material including avicel, calcium sulfate and dextrin. The preparation process includes crushing, pelletizing, tabletting and coating, and the coating includes preparing coating liquid, preheating base tablet and spraying. The medicine tablet has red coating, and the coating process is short and fast and produces less influence on the medicine components. The coated medicine tablet has raised humidity and heat resistance and longer storage life. The coated red medicine tablet has less sugar content and may be also taken by diabetics.

The invention discloses a spray humidifier. The spray humidifier is used for humidifying a fiber belt inside a spinning channel instead of humidification on the whole spinning environment. The spray humidifier comprises a tank, a water inlet valve, a water filter and a channel humidification tube. Water mist is sprayed through cooperation of all components and is brought into the spinning channel via the fiber belt which moves downwards, so the fiber belt can fully and evenly absorb moisture in the spinning channel, and local humidification can be performed according to a fiber movement track. According to the spray humidifier, the problems that due to humidification on the whole environment, energy waste, equipment damage and staff injury are caused are solved, and meanwhile the problems that the dye uptake of existing fibers is low, and dyeing is uneven can be solved. Moreover, local humidification has little influence on the humidity of the environment, will not harm equipment or staff and can guarantee the dye uptake and the dyeing effect, thereby improving product quality.

The invention discloses fire-clearing jasmine and radix ophiopogonis film-coated tablets which comprise main ingredients and auxiliary materials, wherein the main ingredients comprise the following components in parts by weight: 700-900 parts of common andrographis Herb, 80-120 parts of jasmine and 80-120 parts of radix ophiopogonis; and the auxiliary materials comprise the following components in parts by weight: 20-30 parts of starch and 0.1-2 parts of magnesium stearate. The invention also discloses a method for preparing the fire-clearing jasmine and radix ophiopogonis film-coated tablets. The fire-clearing jasmine and radix ophiopogonis tablets are changed from the traditional sugar-coated tablets into the film-coated tablets, the coating time is short, the operation is simple and convenient, the drying speed is high, the medicine is slightly affected by damp-heat, and the service life of the product can be prolonged. Moreover, the process stability is high, the drug quality is high, and the market prospects are wide.

The invention discloses a production method of a semiconductor gas sensor for seafood freshness detection, and develops a semiconductor core-shell structure nano material Co3O4@ZnO with ultrafast response and good selectivity to a trimethylamine gas. The material is prepared by oxidizing a core-shell structure ZIF67@ZIF8, and has porosity and a hollow structure; a Co3O4@ZnO nano material and terpilenol are uniformly mixed and ground to form a slurry with certain viscosity; and a silicon substrate interdigital electrode chip integrated with a micro heater and based on a MEMS technology is adopted as a sensor chip, the prepared slurry is coated in the middle of an interdigital electrode, and a sensing device with stable performance is obtained. The sensor produced by the invention has good selectivity when used for detecting a trimethylamine gas, is not interfered by ethanol, an ammonia gas and the like, is slightly influenced by environmental humidity, and is quick in response and thorough in recovery.