1441 results about "Toxic gas" patented technology

The invention discloses an atmospheric environmental pollution event emergency monitoring and early warning method and system, and belongs to the technical field of environmental management. The method comprises the following steps: acquiring multi-scale meteorological field data and chlorine concentration real-time data of at least five monitoring stations, extracting a wind field direction and a concentration change rate, and determining a position and a wind direction of a potential pollution hot spot area. The information is sent to the unmanned aerial vehicle, and the unmanned aerial vehicle automatically plans a path and collects supplementary concentration data from three angles. And fusing the monitoring data and the supplementary sampling data, and combining with a meteorological field input pollutant three-dimensional concentration distribution model to generate three-dimensional distribution data. And inputting the CALPUFF reverse model, and carrying out inversion to obtain the specific position and the emission intensity of the pollution source. According to the scheme, the accuracy and timeliness of source tracing of the pollution source are improved, high spatial resolution and flexible response capability are achieved, and efficient and intelligent technical support is provided for intelligent early warning, rapid source tracing and scientific response of sudden toxic gas leakage events.

The invention relates to the technical field of battery production, and discloses a preparation method of high-purity lithium sulfide, which comprises the following steps: preparing high-purity sulfur powder; pretreating lithium hydride; proportioning and feeding; carrying out high-speed ball milling treatment; cooling at normal temperature; carrying out ball milling detection; and collecting and packaging. According to the preparation method of the high-purity lithium sulfide, the argon is filled in the ball milling tank, so that the reaction between the lithium hydride and the high-purity sulfur powder is always carried out under the protection of the argon, the safety of the reaction can be ensured, and meanwhile, the use of toxic gas in the production process of the lithium sulfide can be reduced; the high efficiency and safety of the lithium sulfide production process are guaranteed, meanwhile, the converter with the rotating structure at the bottom of the ball milling tank drives the ball milling tank to continuously rotate, full heating and heating uniformity of lithium hydride and high-purity sulfur powder are guaranteed, and then the reaction efficiency and safety of the device in the high-purity lithium sulfide preparation process are improved.

The invention discloses an intelligent induction and early warning system for poisonous gas in a limited space, and relates to the technical field of gas induction and early warning. A three-dimensional structure model of the limited space is constructed, and non-uniform grid division is carried out based on barrier characteristics; multiple types of toxic gas sensing units are arranged in the grids, and gas concentration data are collected in real time; constructing a toxic gas three-dimensional cloud picture, and generating a dynamic weight field based on the concentration gradient; fusing operator positioning and trajectory prediction information, and establishing an individual risk exposure model; calculating a space-time intersection of the toxic gas cloud picture and the high-risk track area to form a fusion risk matrix; realizing linkage early warning control of a region level and an individual level through multi-level dynamic threshold judgment and thermal block clustering identification; the system can realize accurate perception and active response of the toxic gas gathering trend and personnel exposure risk in the complex limited space, has the technical advantages of high sensitivity, high intelligence and low false alarm, and is suitable for various limited space scenes such as chemical engineering, tunnels and mines.

The invention belongs to the technical field of energy storage materials, and particularly relates to a high-entropy oxide Fe0. 2Co0. 2Ni0. 2Cu0. 2Zn0. 2O and an ultrafast synthesis method and application thereof. According to the preparation method, ferroferric oxide, cobalt oxide, nickel oxide, copper oxide and zinc oxide with equal molar ratio are adopted as direct synthesis raw materials, toxic gases such as chlorine and nitrogen dioxide generated in the synthesis process of a metal salt precursor are avoided, and the uniformly distributed single-phase high-entropy oxide is synthesized in an ultrafast manner within 10 seconds by using a Joule heating technology; the synthesized high-entropy oxide is used as a lithium ion battery negative electrode material, and shows more excellent electrochemical performance and cycling stability compared with other high-entropy oxides prepared from transition metals with different proportions; in the preparation process, extra additives are not needed, operation is easy, the synthesis speed is high, the yield is high, element distribution is uniform, and the method has the advantages of being low in cost, high in efficiency and free of pollution and has the industrialization prospect.

The invention discloses a fluoride-free environment-friendly flame-retardant PC (polycarbonate) material and a preparation method thereof. The fluoride-free environment-friendly flame-retardant PC material is prepared from the following raw materials in parts by weight: 68-99.98% of polycarbonate resin; 0.01 to 25% of a flame retardant; 0.01 to 5% of a synergistic flame retardant; and 0-2% of a processing aid. The flame retardant does not contain any flame retardant, does not generate toxic gas or smoke in the combustion process and is harmless to the environment and human bodies, the components of the flame-retardant PC material meet the PFAS environment-friendly requirement, the flame-retardant PC material belongs to an environment-friendly material, and the prepared fluoride-free environment-friendly flame-retardant PC material is applied to the fields of the automobile industry, the electric appliance and instrument industry, the mechanical industry and the like.

The invention belongs to the technical field of gas monitoring, and discloses a limited space gas monitoring method, system and device based on the Internet of Things and a medium, and the method comprises the steps: obtaining gas sensing data transmitted by a pre-constructed gas sensing node network through an optimal transmission path; performing gas concentration prediction on the gas sensing data by using a long short-term memory neural network and a random forest algorithm, comparing a prediction result with a preset early warning threshold value, and triggering an alarm of a corresponding level; and determining a prediction error based on a prediction result, dynamically optimizing an early warning threshold based on the prediction error, and continuously optimizing the plan through a closed-loop feedback mechanism. By introducing the gas monitoring sensor, the wireless Internet of Things ad hoc network technology, the edge computing and the cloud collaborative architecture, the toxic gas real-time monitoring with high sensitivity, low power consumption, flexible deployment and intelligent analysis is realized.

The invention provides a poison gas leakage inversion method, device and equipment, a medium and a product. According to one example of the application, the method may include: using a stochastic simulation algorithm to determine a simulation position and simulation intensity where a poison gas concentration error is minimum, the poison gas concentration error being an error between a sampled poison gas concentration of a sampling point and a stochastic simulated poison gas concentration; based on the simulation position and the simulation intensity, constructing a position constraint condition and an intensity constraint condition of the poison gas leakage source; calculating a leakage source position of a poison gas leakage source by adopting a differential evolution algorithm and a position constraint condition; and calculating the leakage source intensity of the poison gas leakage source by adopting a quasi-Newton optimization algorithm and an intensity constraint condition.

The embodiments provide a system and method for filtering out smoke and / or toxic gases / fumes from air in a building. The system integrates various smart devices with an HVAC system along with a controlling software application that can change the state of the smart devices, thereby controlling the types and quantities of air moving through the HVAC system at any time. In particular, the system can adjust the openings of one or more smart registers to control how much air passes in and out of the HVAC system over a given period of time. The system can also adjust the opening of a smart intake vent to control how much fresh (outside) air passes into the system over a given period of time. The system can also adjust the opening of a smart furnace valve that is disposed within the furnace.

The invention discloses cleaning equipment for a feed production waste gas purification tank. The cleaning equipment comprises a purification tank body, an adjusting assembly, a cleaning assembly and a filtering assembly; a waste gas treatment section and a waste liquid treatment section are arranged on the purification tank body, a liquid inlet pipe is arranged on the outer wall, close to the waste gas treatment section, of the waste liquid treatment section, and a liquid outlet pipe is arranged at the bottom of the waste liquid treatment section; a motor drives a main gear to further drive a driven gear and a rotating cylinder to rotate, an annular base is in threaded connection with a cleaning pipe, so that the whole cleaning pipe rotates and moves upwards, a scraping plate at the bottom scrapes the inner wall of the purification tank body, and meanwhile conical filter cloth is driven to move up and down, so that the conical filter cloth is cleaned more thoroughly; and finally, water is injected into the purification tank body through a liquid inlet pipe to wash the scraped impurities, and wastewater is discharged through a liquid outlet pipe, so that the conical filter cloth and the interior of the purification tank body are ensured to be clean and tidy, and subsequent filtration and purification of toxic gas are facilitated.

The invention relates to the technical field of flame-retardant materials, in particular to a halogen-free flame-retardant glass fiber modified polypropylene material and a preparation method thereof. The material comprises the following components in parts by mass: 60-80 parts of polypropylene, 15-30 parts of long glass fiber, 8-15 parts of a halogen-free intumescent flame retardant, 2-5 parts of a synergist, 3-8 parts of a compatilizer, 2-3 parts of an interface modifier, 2-4 parts of a dynamic cross-linking agent and 1-3 parts of a functional additive. According to the halogen-free flame-retardant glass fiber modified polypropylene material and the preparation method thereof, an intumescent halogen-free flame retardant melamine polyphosphate is compounded with organic montmorillonite, nano zinc borate and MXene, so that the flame-retardant efficiency is improved through a synergistic effect, and the release of smoke and toxic gas in a combustion process is inhibited; the halogen-free flame-retardant glass fiber modified polypropylene material has a good flame-retardant effect by introducing the halogen-free flame-retardant glass fiber, and maleic anhydride grafted polypropylene is introduced as a compatilizer to modify the surface of the long glass fiber and enhance the interface bonding force between the long glass fiber and a matrix.

The invention relates to the technical field of battery raw materials, in particular to a preparation method of lithium sulfide powder, the lithium sulfide powder and application, and the preparation method comprises the following steps: uniformly mixing lithium sulfate and a carbon source according to a preset proportion to obtain a first mixture; performing first heat treatment on the first mixture in inert gas to obtain a second mixture; and performing second heat treatment on the second mixture in reducing gas to obtain the lithium sulfide powder. The product obtained by the preparation method disclosed by the invention is the lithium sulfide powder, and the obtained lithium sulfide powder has the advantages of less oxygen and carbon impurities, higher purity and high reaction activity, and meets the synthesis requirements of the electrolyte; according to the preparation method, in the process of preparing lithium sulfide, toxic gas and organic solvent are not used, the reaction temperature is low, the energy consumption is low, the requirement on production equipment is low, the process is simple, the cost is low, harmful gas emission is avoided, safety and environment friendliness are achieved, and industrialization is easy to achieve.

The invention provides a dual-wavelength tunable all-solid-state mid-far infrared laser, relates to the technical field of lasers, and is used for solving the technical problems that high-performance dual-wavelength 3 [mu] m waveband laser and mid-far infrared waveband laser generated by pumping of the high-performance dual-wavelength 3 [mu] m waveband laser are difficult to obtain in the prior art. The middle and far infrared laser comprises an erbium-doped laser and an optical parametric oscillator, the erbium-doped laser is used for providing dual-wavelength 3-micron wave band pulse laser, and the erbium-doped laser comprises a pumping source, an erbium-doped laser medium, a gain modulator, a high reflective mirror and an output mirror; the optical parametric oscillator is used for obtaining medium-wave infrared laser and long-wave infrared laser which are output in a dual-wavelength mode under the pumping effect of the dual-wavelength pulse laser in the 3-micron wave band. The mid-far infrared laser is simple in structure and convenient to use, can obtain tunable dual-wavelength mid-far infrared pulse laser with high beam quality, and meets the light source requirements of differential absorption of toxic gas telemetering of laser radar and photoelectric countermeasure.

The invention discloses a mine blasting safety monitoring and early warning system, which comprises a multi-source sensing module, an edge computing node, a dynamic risk assessment module, an intelligent early warning decision module and an emergency linkage execution module, and is characterized in that the multi-source sensing module acquires multi-dimensional data such as blasting vibration, shock waves and toxic gas through various sensors; edge computing nodes filter noise and extract time-frequency features; the dynamic risk assessment module inverts blasting energy based on vibration and shock wave data, and predicts secondary disasters in combination with a geological model and gas concentration; the intelligent early warning decision module dynamically adjusts an early warning threshold by using a deep learning model and fusing multi-modal data; the emergency linkage execution module executes instructions such as power failure and evacuation according to devices such as early warning level, linkage ventilation and personnel positioning, overcomes the defects of traditional single monitoring and lack of correlation models, realizes full-process and all-directional monitoring of blasting operation, and effectively improves the safety of mine blasting operation and the efficiency of emergency management.

The invention relates to the technical field of intelligent sensors, in particular to a workshop harmful gas abnormity monitoring method and system based on multi-modal data, and the method comprises the following steps: obtaining the multi-period concentration change of a node, recognizing the reverse direction, forming a bounce fragment, combining node behaviors according to the correlation of time and space, and constructing a diffusion path; and in combination with node toxicity residence and trend change and gas and time information at the convergence position, a workshop multi-modal toxicity anomaly monitoring result is obtained. According to the method, gas fluctuation characteristics are captured by recognizing the concentration change direction and the reversal amplitude, a behavior combination is constructed by combining time and space information, the linkage recognition capability between nodes is enhanced, a path sequence is constructed by depending on the trend direction and the node sequence to present a diffusion track, and extension and mutation nodes are extracted by superposing the residence state and the change trend. The dynamic monitoring range of toxic gas in multiple scenes is expanded, and correlation analysis of behavior traceability, path tracking and abnormal gathering areas is supported.

The invention discloses an engineering building detection method and system, and relates to the technical field of building fire detection and early warning. Through systematic area division and multi-dimensional sensor network monitoring, environment and equipment operation data of a key area can be collected in real time; and obtaining and evaluating a layout closeness index Ji, a cable overload coefficient Oi, an electrical load change index Li and a toxic gas leakage coefficient Ci of the ith monitoring area, thereby improving the early warning capability of the fire risk. Through combination of smoke diffusion analysis and fire risk index evaluation, the fire risk can be accurately judged, and a fire control instruction can be triggered in a targeted manner. Besides, based on a smoke diffusion index correction mechanism, the system can dynamically adjust the operation states of the spraying equipment and the ventilation facility, so that fire control precision and resource saving are realized, and the fire safety and emergency response efficiency of the building are effectively improved.

The invention relates to the technical field of gas monitoring, in particular to a toxic gas emission monitoring method and system for an electronic component workshop, and the method comprises the steps: constructing a hierarchical monitoring network in the electronic component workshop; the fixed monitoring nodes and the key area monitoring nodes are used for collecting poisonous gas concentration data and environment airflow velocity data of the positions where the fixed monitoring nodes and the key area monitoring nodes are located, meanwhile, the mobile inspection nodes are used for collecting poisonous gas concentration data and real-time space coordinate data on a moving track, and the data are packaged into a monitoring data packet to be transmitted to the central processing platform. Then preprocessing and standardization processing are carried out, a concentration distribution cloud picture of a workshop is dynamically generated based on standardized data, and when the concentration data exceed a preset concentration absolute value threshold value, traceability analysis is carried out to determine the position of a leakage source; and triggering trend early warning based on the concentration change trend, triggering grading alarm based on the concentration absolute value and / or the traceability analysis result, and performing rapid traceability and early warning on the toxic gas in the electronic component workshop.

The invention relates to a tunnel toxic gas detection method, device, equipment and system and a storage medium, and belongs to the technical field of information detection.The method comprises the steps that concentration measured values of multiple toxic gases collected by multiple gas sensor nodes in a tunnel are obtained; inputting the concentration measurement values of the various toxic gases into a linear minimum mean square error estimation model, and outputting the position of a gas leakage source and an estimated value of a gas release rate; inputting the estimated value of the gas leakage source parameter into a gas diffusion model, and outputting a gas diffusion parameter; the gas diffusion model is a static smoke plume gas diffusion model based on turbulence diffusion, and the gas diffusion parameters comprise the diffusivity of a gas leakage source; and inputting the estimated value of the gas leakage source parameter, the gas diffusion parameter and the standard-exceeding concentration threshold value of the toxic gas into a finite element prediction model, and outputting a toxic gas standard-exceeding prediction result. According to the invention, continuous monitoring and dynamic early warning of the toxic gas in the tunnel can be realized.

The invention provides a granary safety intelligent early warning method and device, relates to the field of data processing and early warning, and solves the technical problems that the existing granary operation risk detection is not accurate enough, and the conditions of incomplete identification, false alarm or missing alarm are easy to occur. The method comprises the following steps: collecting multi-source time sequence data in a granary, and constructing environmental safety time sequence characteristics based on oxygen concentration time sequence data, toxic gas concentration time sequence data and smoke state time sequence data; based on the temperature and humidity time sequence data and the grain pile temperature time sequence data, risk trend time sequence characteristics are extracted; constructing a risk time sequence based on the environmental safety time sequence characteristics, the risk trend time sequence characteristics and the personnel access information time sequence data; carrying out fusion modeling on the risk sequential sequence through Transform, and identifying a risk level; and when the risk level reaches a preset threshold value, the system controls the bin gate access control to execute opening or closing operation, and synchronously triggers linkage early warning treatment. The method is used in the granary operation safety early warning process.

The invention relates to the technical field of toxic gas detection and calibration, in particular to an artificial intelligence toxic gas detection alarm joint calibration method based on multi-sensor data fusion, which comprises the steps of data acquisition, data preprocessing, data fusion, calibration model establishment, real-time calibration and calibration result evaluation. According to the artificial intelligence toxic gas detection alarm joint calibration method based on multi-sensor data fusion, data of a plurality of toxic gas sensors are integrated through a weighted fusion algorithm, environmental parameters such as temperature, humidity and air pressure are introduced for correlation fusion, and errors and environmental interference of a single sensor are effectively eliminated. For example, sensor weights are dynamically distributed based on historical detection precision and stability, so that data errors after fusion are reduced, and the problem that traditional single sensor calibration cannot cope with complex environments is solved.

The present invention proposes a B1-class halogen-free, low-smoke, flame-retardant special cable and its preparation method. The cable comprises: a cable core formed by wrapping a control core and a power core, a flame-retardant filling rope, a wrapping layer, a flame-retardant tape layer, a total shielding layer, a ceramic fireproof layer, and an outer sheath. The present invention uses a cross-linked polyethylene sheath to form an outer layer of protection, a ceramic fireproof layer to form an intermediate shell flame-retardant insulation layer, and a flame-retardant tape layer combined with expandable graphite as an inner layer of buffer insulation, thereby achieving multiple flame-retardant insulation for the cable core, inhibiting the release of burning drips and toxic smoke with corrosion, and meeting and exceeding the B1-class flame-retardant requirements. By using low-smoke, halogen-free materials, the release of toxic gases can be reduced during combustion. At the same time, a double-layer hardness flame-retardant filling rope is twisted in the core to make the cable more round as a whole, and to allow the flame-retardant material to be fully filled into the cable core, achieving a better flame-retardant effect, and having certain buffering, compression resistance, torsional resistance, and fatigue resistance effects, thereby improving the mechanical properties of the cable.

The invention discloses an emergency escape path planning method in a toxic gas leakage scene, which comprises the following steps: simulating a chemical plant leakage accident through a CALPUFF diffusion model, and providing toxic gas concentration data; performing smooth interpolation processing on the poison gas concentration data by using a Gaussian interpolation method; setting a gas concentration threshold value, determining a poison gas coverage area in combination with the poison gas concentration data after smoothing processing, and gridding the poison gas coverage area; designing a time-varying cost path planning algorithm, and generating candidate routes; accumulative calculation of exposure concentration is carried out on candidate routes for pedestrian escape, and the route with the lowest accumulative exposure concentration is selected as the optimal escape route. According to the emergency escape path planning method in the toxic gas leakage scene, the problem that the emergency escape path cannot be effectively planned in the complex toxic gas leakage scene in the prior art is solved.

The invention relates to the related technical field of laboratory equipment, and discloses a laboratory intelligent management system based on a safety monitoring function, which comprises an experiment table, an operation table is arranged on the experiment table, a first shell is arranged at the upper end of the operation table, and a collection and treatment assembly is arranged in the first shell; an S-shaped channel can be formed in the middle of the interior of the second shell through a first inclined plate and a second inclined plate, so that the moving stroke of poisonous gas in the second shell is prolonged, and the treatment effect on the poisonous gas is improved; the conical cover moves downwards to be close to the position above a source where the harmful gas is generated, so that the toxic gas is prevented from being diffused into a laboratory; and finally, by reducing the width of an S channel in the second shell, the height of the multiple adsorption particles in the second shell is increased, the contact time of the toxic gas and the multiple adsorption particles is further prolonged, and the toxic gas treatment effect of the collecting and treating assembly is improved according to the amount of the toxic gas.

The invention relates to the technical field of coal mine fire prevention, and particularly discloses a grouting device for preventing and controlling spontaneous combustion of residual coal in a coal mine goaf. The material tank is arranged on the movable frame; the middle bin is communicated with an outlet in the bottom of the material tank; the composite pipe comprises a slurry conveying pipe and an exhaust pipe; and the end comprises an exhaust hood and a grouting head which are coaxially distributed. In the grouting fire prevention process, gas in the goaf is exhausted into the middle bin through the exhaust pipe, negative pressure in the middle bin can be prevented, pressure fluctuation in the slurry pumping process can be reduced through the stability of air pressure, slurry pumping is smoother, and it is ensured that slurry can be continuously and smoothly pumped out; meanwhile, flammable gas containing methane and the like or other poisonous gas exhausted from the goaf is stored through the middle bin and prevented from being directly exhausted into the atmosphere, environmental pollution and safety risks are reduced, and follow-up collection of the gas in the goaf is facilitated.

The invention provides a combustible and toxic gas monitoring method and system, and the method comprises the steps: dynamically adjusting the density of a sensor based on a historical leakage risk weight, collecting multi-modal environment data, and carrying out the fusion correction, and generating an environment data set; constructing a gas diffusion model based on the environmental data set, predicting future concentration distribution in combination with environmental variables, and identifying a high-risk region; aiming at a high-risk area, an optimization objective function is designed by taking minimization of gas concentration distribution and energy consumption as optimization objectives, an optimal control strategy is generated through the optimization objective function, and temperature, wind speed and ventilation intensity are adjusted to inhibit gas diffusion; and an optimal control strategy is executed and real-time feedback optimization is performed, so that system robustness and energy consumption balance are ensured. According to the invention, the monitoring and control process of gas leakage can be dynamically optimized, more accurate safety management is realized, and the safety and energy efficiency of industrial places are effectively improved.

The invention discloses a tunnel high-speed train dynamic fire scene simulation and intelligent measurement and control experiment platform and application thereof, and the platform modularly integrates a tunnel model, a train model, a high-speed meshing driving system, an optical dynamic tracking system, a multi-mode fire scene simulation system, a high-frequency acquisition system and a control cabinet. The tunnel model adopts a splicing structure to adapt to different experiment scenes; the train head adopts an arc-shaped structure to optimize aerodynamic performance; a gear rack-sliding rod transmission mode and a synchronous operation technology are innovatively adopted, and the dynamic flame form can be accurately captured; the multi-mode fire scene simulation system performs omnibearing simulation on fire disasters at different parts; the tank chain is used for long-distance dynamic energy transmission; the high-frequency acquisition system monitors fire multi-source characteristic parameters in real time; and the controller realizes automatic control of the experiment process. The dynamic high-precision experimental platform constructed by the invention can provide technical support for researching flame propagation, flue gas diffusion and toxic gas distribution, and has important significance for improving the fire prevention and control capability of the train.

The invention relates to the technical field of toxic gas detection, and discloses a gas hazard prediction method fusing multi-sensor data, which comprises the following steps: step 1, collecting original environment data from various heterogeneous sensors in a target area; step 2, carrying out time alignment processing on the original environment data by adopting an improved dynamic time warping algorithm, so that multiple types of sensor data are aligned on a unified event timeline; and step 3, performing perception conflict detection based on the aligned data, judging whether the output of the plurality of groups of sensors has trend difference or not, when the difference exists, constructing a confrontation revenue function, and using each sensor as a strategy participant by using a game theory model. According to the technical scheme, the improved dynamic time warping algorithm is adopted to carry out event-level time alignment on multi-class heterogeneous sensor data, and the technical effect of realizing high-precision synchronous fusion of multi-source data in a gas rapid diffusion or sudden leakage scene is achieved.

The invention discloses a dust and poison synergistic efficient purification filter cartridge dust remover and a use method thereof. The dust and poison synergistic efficient purification filter cartridge dust remover comprises a dust removal box body, an air inlet pipe, a double-layer filter cartridge, a blowing dust removal device and an air outlet pipe, a mounting partition plate is fixed in the dust removal box body, the top end of the double-layer filter cartridge is fixedly connected with the mounting partition plate, and the blowing dust removal device is arranged at the top of the double-layer filter cartridge; the double-layer filter cartridge comprises an outer filter cartridge and an inner filter cartridge which are coaxially arranged, and the outer filter cartridge covers the outer side of the inner filter cartridge; the outer filter cartridge is used for intercepting and filtering large-particle dust and adsorbing part of toxic gas, the inner filter cartridge comprises an outer-layer filter material and an inner-layer fine adsorption interlayer, and the outer-layer filter material is attached to the outer peripheral surface of the inner-layer fine adsorption interlayer; the outer-layer filter material is used for filtering fine dust, and the inner-layer fine adsorption interlayer is filled with purification particles and is used for adsorbing carbon monoxide and ammonia gas. Through the design of the double-layer filter cylinder, pulse dust removal and spring dust discharging structures are combined, and the functions of efficient dust removal, harmful gas adsorption and convenient maintenance are achieved.

The invention relates to the technical field of cables, in particular to fire-resistant silicone rubber, a preparation method thereof and a cable, and the fire-resistant silicone rubber is composed of a matrix resin composite system, a composite flame-retardant system, a nanometer enhancement and smoke suppression system and an interface and vulcanization system, the matrix resin composite system comprises methyl vinyl silicone rubber, vinyl silicone rubber and macromolecular polyethylene, the composite flame-retardant system comprises nano aluminum hydroxide, zinc borate and transition metal nitride, and the nano enhancement and smoke suppression system comprises modified nano silicon dioxide, organic montmorillonite and zinc molybdate. The interface and vulcanization system comprises a silane coupling agent, dicumyl peroxide and a platinum catalyst. Therefore, the problems that in the prior art, fire resistance is insufficient, toxic gas is released during combustion, the mechanical property is poor, machining is complex, and environment friendliness is low are solved.

The invention relates to a binder, an electrode material and a battery. The binder comprises the following preparation raw materials: a temperature-sensitive polymer and a conductive agent, the temperature-sensitive polymer comprises at least one of polyalkyl pyrrole, polyalkyl thiophene, polymethyl methacrylate, ethylene-vinyl acetate copolymer, polypropylene or polyimide. The structure and properties of the temperature-sensitive polymer can be changed when the temperature rises, so that the conductivity, the adhesive property and the mechanical strength of the material are adjusted, the adhesive can automatically insulate reaction in a battery cell and prevent thermal runaway, and the adhesive is good in stability at high temperature, does not decompose or degrade to release toxic gas, and is safe and reliable. The safety performance of the product is greatly improved; by combining with the conductive agent, a network structure with strong adhesive force, good conductivity and high heat conduction efficiency can be formed, and the obtained adhesive has good adhesive force and conductivity at room temperature and excellent insulativity and safety performance at high temperature.

The invention relates to the technical field of materials, and discloses a preparation method of a flame-retardant high-temperature-resistant PVC (polyvinyl chloride) material, the flame-retardant high-temperature-resistant PVC material comprises the following raw materials in parts by weight: polyvinyl chloride resin, a stabilizer, a plasticizer, a charring agent, a flame-retardant smoke suppressant, a lubricant and an anti-aging agent, the flame-retardant smoke suppressant is diatomite of which the surface is modified with a phosphorus-containing flame retardant, and a hydrogen-bond cross-linked network is formed by utilizing the hydrogen-bond interaction between the charring agent and a polyvinyl chloride molecular chain, so that the high-temperature resistance and flame retardance of polyvinyl chloride are improved, and the emission of toxic gas during combustion is reduced; the pollution to air and the harm to a human body are reduced, the environment-friendly and sustainable product design is promoted, and the application field of the polyvinyl chloride is expanded.