278results about How to "Reduce burn" patented technology

The invention discloses a safe airtight cold-resistant low-smoke flame-retardant control cable used in an explosion environment, and relates to the technical field of cables, a first hot melting pipe is filled with expanded graphite, the outer side of a wrapping tape is uniformly sleeved with protective iron rings at intervals, the outer sides of the protective iron rings are uniformly provided with fixing holes at intervals, and a communication port is formed between every two adjacent fixing holes; according to the invention, the heat insulation cotton, the compression-resistant rib, the protection iron ring, the arc-shaped elastic sheet, the arc-shaped frame and the elastic roll absorb and buffer external force, so that the compression resistance and impact resistance of the cable are enhanced; the aluminum hydroxide powder absorbs a large amount of heat and delays combustion, the expanded graphite in the first hot melting pipe is heated to expand, the expanded graphite is diffused to a gap between the shielding layer and the wrapping layer, flame is prevented from combusting to the interior of the cable, the working time is prolonged, and the economic loss is reduced.

The invention discloses a flame-retardant antistatic wear-resistant fabric and a preparation method thereof, and relates to the field of fabrics. When the flame-retardant antistatic wear-resistant fabric is prepared, nano titanium dioxide is subjected to a reaction with 3-aminopropyltrimethoxysilane, 2, 5-dihydroxy terephthalaldehyde and 1-aminopyrrole in sequence, and modified nano titanium dioxide is prepared; reacting the ester mixed solution with the alcohol mixed solution, and then reacting with 1-allyl-1H-pyrrole to obtain modified polyester; reacting the modified polyester, the modified nano titanium dioxide and a pyrrole mixed solution, spinning, and weaving to obtain the flame-retardant antistatic wear-resistant fabric. The flame-retardant antistatic wear-resistant fabric prepared by the invention has excellent flame-retardant, antistatic, wear-resistant, antibacterial and anti-aging effects.

The invention discloses a radio frequency therapeutic apparatus and a motion trail recognition system thereof, the radio frequency therapeutic apparatus is provided with a control module, and the control module is electrically connected with an acceleration sensor and a data processing module; the system runs on the radio frequency therapeutic instrument and comprises a data preprocessing module and a deep learning model. The data preprocessing module filters the data through a Kalman filter and sends the processed data to the deep learning model, and the deep learning model analyzes and learns the data sent by the data preprocessing module and judges and recognizes a motion track formed by operation behaviors of a user through the model obtained through training. The device can adjust the working power according to the motion trail, and the purpose of controlling the output power of the radio frequency therapeutic apparatus in real time is achieved.

The invention discloses a low-smoke-density high-temperature-resistant halogen-free special flame-retardant optical cable, which comprises a cable core, an inner sheath and a fireproof layer from inside to outside, and is characterized in that the fireproof layer comprises a fireproof layer made of a ceramic silicone rubber material; the cable core comprises optical fibers, a loose tube, a reinforcing piece and an internal flame-retardant thermal insulation layer, the reinforcing piece is located in the center of the cable core, the optical fibers are arranged in the loose tube to form an optical fiber unit and surround the reinforcing piece, the internal flame-retardant thermal insulation layer comprises water-blocking yarn and a calcined mica tape, and the space between the optical fiber unit and the reinforcing piece is filled with the water-blocking yarn. And the optical fiber units, the reinforcers and the water-blocking yarns are wound by the calcined mica tape in a multi-layer and multi-pitch manner. According to the invention, the ceramic silicone rubber material is adopted and is ceramized in a flame state or at a high temperature of more than 500 DEG C to form an oxygen barrier layer, so that a flashover phenomenon in the cable is prevented; ointment is removed from the structure, and the water-blocking yarn and the calcined mica tape are used for blocking water, so that smoke in the combustion process is reduced, and the harm to personnel is less under the condition of fire hazard.

The invention provides a preparation method of a fiber composite photovoltaic support material, and belongs to the technical field of composite materials. The fiber composite photovoltaic support material is prepared by adding the modified basalt fiber as a composite reinforcing material and then introducing the polyisocyanurate tripolymer and the modified aluminum nitride, and the support material is high in longitudinal tensile strength and has good flame retardant property and heat-conducting property.

The invention discloses a method for green and safe synthesis of epsilon-caprolactone from cyclohexanone, and belongs to the technical field of heterocyclic compound and organic chemical raw material manufacturing, and the method comprises the following steps: oxidizing and converting cyclohexanone into a mixture aqueous solution of epsilon-caprolactone, 6-hydroxyhexanoic acid and 6-hydroxyhexanoic acid linear oligomers / oligomers, removing peroxides in the mixture aqueous solution, and obtaining the epsilon-caprolactone. The method comprises the following steps: carrying out polycondensation on a mixture of epsilon-caprolactone, 6-hydroxycaproic acid and a 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the mixture into the 6-hydroxycaproic acid linear oligomer / oligomer, and depolymerizing the 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the 6-hydroxycaproic acid linear oligomer / oligomer into epsilon-caprolactone or / and epsilon-caprolactone cyclic dimer. According to the method, cyclohexanone and hydrogen peroxide are used as reaction raw materials, the organic peroxide is prepared in a non-centralized manner in the whole route, and an organic solvent is not used, so that the combustion and explosion risks caused by the use of a large amount of organic peroxide and organic solvent are greatly reduced, and the yield of epsilon-caprolactone is improved through a polycondensation-depolymerization scheme.

The invention provides a grain drying device, relates to the field of grain drying equipment, and aims to solve the problems of high hot air resistance, high fan energy consumption and high grain drying cost due to the fact that inlet air adopts one-in and one-out downstream flow or countercurrent flow in the conventional grain drying process. In order to solve the problems of low tempering frequency, low drying efficiency and poor grain quality due to adoption of a mixed flow mode in the existing grain drying process, three adjacent rows of corner boxes are adopted as a group, the middle row of corner boxes in the same group forms an air inlet channel, the upper row and the lower row of corner boxes in the same group are exhaust channels, and the thickness of a grain layer between the adjacent rows of corner boxes is reduced, so that the wind resistance is reduced, and the grain quality is improved. A tempering area is formed between every two adjacent corner combining boxes, multiple times of tempering of the grains are achieved, heat is transferred from outside to inside, moisture is transferred from inside to outside more sufficiently, and therefore the quality of the dried grains is guaranteed.

The utility model discloses a ditching and fertilizing integrated device, which relates to the technical field of planting equipment and comprises a ditching mechanism and a fertilizing mechanism. The ditching mechanism comprises a handle and a ditching plough; the furrow plough is fixedly arranged at one end of the handle; the fertilizer spraying mechanism comprises a fertilizer box, a fertilizer outflow pipe, a push switch and a plugging sheet; the fertilizer box is fixedly arranged on the handle and is provided with a containing cavity, a feeding hole and a discharging hole; the fertilizer outflow pipe is communicated with the discharge hole; the other end of the fertilizer outflow pipe is positioned on the rear side of the furrow plough; a sliding groove is formed in the fertilizer outflow pipe, and the push switch is arranged in the sliding groove in a sliding mode; the blocking piece is rotationally arranged in the fertilizer outflow pipe, and the rotating axis of the blocking piece passes through the center of the blocking piece; the plugging sheet is connected with the push switch through a connecting piece; when the push switch moves in the direction away from the plugging piece, the push switch can pull the plugging piece through the connecting piece and enable the plugging piece to rotate. The working efficiency can be improved, and the labor input is reduced.

The utility model belongs to the technical field of plastic cups, and particularly relates to an anti-scald PET cup which comprises a plastic cup outer cup body, the bottom of the plastic cup outer cup body is fixedly connected with a wrinkle area, the interior of the plastic cup outer cup body is fixedly connected with a supporting strip, and the side of the plastic cup outer cup body is provided with air holes. The top of the supporting strip is fixedly connected with a bottom plate, the interior of the bottom plate is fixedly connected with an inner cup body of the plastic cup, a liquid splashing prevention assembly is installed at the top of the bottom plate, the top of the liquid splashing prevention assembly is fixedly connected with a straw, an outer cup body of the plastic cup and a wrinkled area are integrally arranged, and the wrinkled area is cylindrical and hollow. The wrinkled area and the interior of the outer cup body of the plastic cup form a communicating structure; the plastic cup outer cup body and the plastic cup inner cup body do not need to make direct contact with the plastic cup inner cup body in the using process, and scalding is reduced.

The invention relates to the technical field of new materials of conveying belts, and discloses a full-polyester-reinforced scratch-resistant wear-resistant whole-core flame-retardant conveying belt for a coal mine and a preparation method of the whole-core flame-retardant conveying belt. Comprising the following steps: adding ethylene propylene rubber into an open mill for plastifying to obtain plasticated rubber; adding calcium carbonate, aluminum hydroxide and a vulcanizing agent into the plasticated rubber, uniformly stirring, and then mixing to obtain a rubber compound; immersing the modified polyester fabric into the mixed rubber, taking out the modified polyester fabric, taking out the redundant mixed rubber on the polyester fabric by using an extrusion roller, then drying, and then vulcanizing to obtain the product. The conveyor belt not only has good scratch and collision resistance and wear resistance, but also has good flame retardant property.

The invention discloses a preparation method of an elastic and efficient grinding tool special for metal polishing, and relates to the technical field of grinding tools, primer materials comprise water-soluble phenolic resin, filler, a penetrating agent, a reinforcing agent, a dispersing agent and a solvent; the composite sizing material comprises water-soluble phenolic resin, a filler, an abrasive material, a leveling agent, a reinforcing agent, a pigment, a dispersing agent and a solvent. According to the preparation method of the elastic and efficient grinding tool special for metal polishing, elastic particles formed after oak bark is smashed are added in the production process of the grinding tool, hard contact between the grinding tool and a workpiece can be converted into soft contact, a buffering effect can be provided in the grinding process through the elasticity of the cork particles, and therefore the grinding tool is prevented from being damaged. The phenomenon that the surface of a workpiece is burnt due to too large grinding force or poor heat dissipation is reduced, meanwhile, elastic contact of the cork particles facilitates pressure dispersion, local overheating is prevented, heat can be dissipated, and the situation that local overheating occurs during grinding is reduced.

The invention belongs to the technical field of plant cultivation and seedling raising, and particularly relates to a sand plant cultivation and seedling raising device which comprises a greenhouse body and a seedling raising bed, a U-shaped water receiving tank is fixedly mounted at the top of the outer side wall of the greenhouse body, and the bottom of the U-shaped water receiving tank is communicated with a water leakage pipe; a self-cleaning rainwater rough filtration mechanism is fixedly mounted on the outer side wall of the greenhouse main body, and a water and fertilizer integrated irrigation mechanism is fixedly arranged in the greenhouse main body; through an efficient rainwater collecting and filtering system and water and fertilizer integrated control, the utilization efficiency of water resources and fertilizers is improved, the self-cleaning function is achieved, blockage of a coarse filter screen is avoided, it is ensured that the rainwater collecting efficiency is stable, regular cleaning by personnel is not needed, and the labor cost is saved; extra energy consumption is not needed, the energy consumption is reduced, automatic mixing of the fertilizer and water can be realized, and the water and fertilizer integration efficiency is improved.

The invention discloses a quick-drying waterborne epoxy coating and a preparation method thereof, and relates to the field of coatings. When the quick-drying waterborne epoxy coating is prepared, modified cyclotetrasiloxane, 3-aminopropyl methyl dimethoxy silane and quaternized silane are subjected to a reaction, and functional polysiloxane is prepared; the preparation method comprises the following steps: reacting graphene oxide with ethylenediamine and allyl phosphine dichloride to prepare modified graphene; the preparation method comprises the following steps: preparing a component A from modified graphene, functionalized polysiloxane, a defoaming agent, azodiisobutyronitrile and deionized water, taking waterborne epoxy emulsion as a component B, and uniformly mixing the component A and the component B to prepare the quick-drying waterborne epoxy coating. The quick-drying waterborne epoxy coating prepared by the invention has good corrosion resistance, self-repairing performance, flame retardance, antibacterial performance and wear resistance.

The invention discloses a lightweight high-strength power cable based on a composite material and application thereof, belongs to the technical field of cable preparation, and aims to solve the technical problem that the lightweight and anti-electromagnetic interference performance of a lightweight cable in the prior art needs to be further improved. The cable comprises a conductor layer, a light shielding layer, a wrapping layer and a composite sheath layer which are sequentially arranged from inside to outside, modified carbon spheres are introduced into a titanium dioxide aerogel structure for filling and loading copper particles, obtained composite aerogel serves as a filling material of the light shielding layer, the modified carbon spheres serve as a cross-linking agent and a filling material of light polyurethane, and the light shielding layer and the composite sheath layer are formed. The composite aerogel and the lightweight polyurethane significantly reduce the density of the cable and significantly improve the lightweight performance of the cable, and through the synergistic cooperation of the copper particles, the titanium dioxide aerogel structure and the hollow carbon spheres, the anti-electromagnetic interference performance of the material is significantly improved.

The invention relates to the technical field of cables, and provides a fireproof flame-retardant pressure-resistant cable, which comprises a plurality of conductors, a plurality of insulating layers, an outer protective sleeve, an outer armor layer, a separation frame, a ceramic particle filler and a fire extinguishing assembly, and is characterized in that the conductors and the insulating layers are in one-to-one correspondence, and the insulating layers are arranged outside the conductors; the outer armor layer is arranged in the outer protective sleeve, the partition frame is arranged in the outer armor layer, the fire extinguishing assembly is used for extinguishing fire when combustion occurs, the fire extinguishing assembly comprises a gas storage bin, a plurality of partition plates are arranged in the partition cavity and divide the interior of the partition cavity into a fire extinguishing cavity and a fireproof cavity which are arranged in a staggered mode, and the gas storage bin is located in the fire extinguishing cavity; the fireproof cavity is filled with the ceramic particles, and fire extinguishing gas is contained in the gas storage bin. According to the technical scheme, the problems of property loss and safety accidents caused by breakdown and combustion of the insulating layer of the cable in the prior art are solved.

The utility model provides an automatic pouring device for producing ladle castable, which relates to the technical field of ladle pouring and comprises pouring equipment and a pouring mould, one side of the pouring equipment is rotatably connected with a bearing plate, an outer fixed barrel is fixed at the top of the bearing plate, a discharge nozzle is fixed on the peripheral surface of the outer fixed barrel, and the inner wall of the outer fixed barrel is rotatably connected with an inner rotating barrel. A mode of installing an inner rotating barrel is adopted to solve a series of problems that the performance of a plurality of materials can be changed at a high temperature in the pre-pouring stage, the materials which can keep the characteristics of the materials and can be effectively stirred are difficult to find, the uniformity of the pouring materials is insufficient, and a series of problems can be caused as firstly, the non-uniform pouring materials can influence the flowability of the pouring materials; the problems of incomplete filling, excessive bubbles and the like occur in the pouring process due to the fact that the existing pouring materials are not uniform, the performance and the service life of products are directly affected by insufficient strength after pouring forming due to uneven pouring materials, and finally, if the yield is reduced, the production cost is increased, the production efficiency is reduced, and even the market competitiveness of enterprises is affected.

The utility model relates to the technical field of methanol storage, and discloses an external cooling and heat insulation methanol storage device which comprises a storage tank, a heat insulation shell fixedly connected to the outer side of the storage tank, a water tank fixedly connected to the bottom end of the storage tank, a condensation pipe fixedly connected to the bottom end of the front side of the water tank, and a water pump fixedly connected to the other end of the condensation pipe. The output end of the water pump is fixedly connected with a circulation pipe, the other end of the circulation pipe is fixedly connected to the top end of the front side of the water tank, the rear side of the water tank is fixedly connected with a water inlet pipe, and the other end of the water inlet pipe is in threaded connection with a liquid blocking cover. According to the methanol storage tank, the temperature of the storage tank can be monitored, so that the interior of the storage tank is cooled when the temperature of the storage tank rises, the cooling effect of air cooling and water cooling on the tank body can be conveniently added, the combustion and explosion risks caused by rising of the temperature of internal methanol can be reduced, and the safety during storage is improved.

The sterilization device comprises a sterilization box, a material opening is formed in the middle of the outer surface of the front end of the sterilization box, a material box is arranged at the front end of the sterilization box, a connecting frame is arranged on the outer surface of the upper end of the material box, and hanging rings are arranged at the front ends and the rear ends of the two sides of the outer surface of the upper end of the connecting frame. A moving mechanism is arranged on the outer surface of the front end of the sterilization box and comprises a fixing frame, a moving groove, a first groove, an air curtain machine, a mounting frame, a multi-section telescopic rod, a fixing block, a second groove, a motor, a rotating block and an L-shaped push plate. According to the sterilization device for processing and manufacturing the prefabricated vegetables, the two groups of air curtain machines output air at a high speed to form an isolation air curtain, hot air in the sterilization box is isolated, hot air loss is avoided, the material box can be conveniently moved, feeding and discharging are convenient, operation is simple, scalding is reduced, safety is improved, and better use prospects are brought.

The invention provides a preparation method and device of a nickel-based corrosion-resistant alloy thin strip, and relates to the technical field of nickel-based corrosion-resistant alloys, and the preparation method comprises the following steps: S1, forging, hot rolling and cold rolling a cast nickel-based corrosion-resistant alloy original cast ingot to form a relatively thin strip I; s2, the first thin strip obtained in the step S1 is subjected to rolling machining through first rolling equipment, and a second thin strip is formed; s3, the second thin strip obtained in the step S2 is subjected to rolling machining through second rolling equipment, and a third thin strip is formed; wherein in the rolling process, the rolling speed of the second rolling device is controlled to be smaller than that of the first rolling device. According to the method, hot cracks and burns generated on the surface of the nickel-based corrosion-resistant alloy thin strip can be reduced, and the surface quality of the finished nickel-based corrosion-resistant alloy thin strip is guaranteed.

The invention discloses a method for improving the firing yield of cordierite DPF honeycomb ceramics, and belongs to the technical field of honeycomb ceramic carrier preparation. The preparation method comprises the following steps: mixing raw materials; kneading mud; performing extrusion molding; drying and shaping; cutting and firing to obtain a cordierite honeycomb ceramic carrier; and performing boundary dimension processing, film covering, hole dotting, mud scraping and drying to obtain a finished product. According to the invention, magnesium hydroxide is used for replacing part or all of talc in a traditional formula of a cordierite porous ceramic structural body, and magnesium hydroxide absorbs a large amount of heat when heated, so that rapid temperature rise of a DPF carrier mud blank caused in an organic matter coke discharge process is slowed down, the temperature gradient of the DPF carrier mud blank in a firing process is reduced, and the sintering temperature of the DPF carrier mud blank is reduced. Therefore, the generation of mud blank cracks is inhibited in the firing process, and the firing yield is improved.

The invention provides a method for performing flame-retardant finishing on a copper ammonia fabric by using a barley bran extract, the flame-retardant finishing method is as follows: a core-shell structure flame retardant is loaded to the surface of the copper ammonia fabric through a padding process, the core-shell structure flame retardant takes polyguanidine and sodium alginate as a shell layer and takes the barley bran extract as a core layer, and the core layer is a shell layer; the polyguanidine and the sodium alginate are combined through self-assembly. The barley bran used in the invention is a by-product of barley processing, efficient utilization of resources is realized through processing of the barley bran, use of halogen in a traditional flame retardant is avoided, and the method has the characteristic of environmental friendliness.

The utility model relates to the technical field of high-temperature sterilization boxes, and discloses a high-temperature sterilization box for marinated meat, which comprises a high-temperature sterilization box body, the right side of the front surface of the high-temperature sterilization box body is rotatably connected with a box door through a hinge, and the left side and the right side of the inner side wall of the high-temperature sterilization box body are fixedly connected with concave supporting strips. A plurality of castors are slidably connected to the inner side walls of the concave supporting strips, a metal strip shaped like a Chinese character'hui 'is fixedly connected to the upper surfaces of every two castors located on the same horizontal plane, and a storage shell is detachably connected to the upper surfaces of the metal strips shaped like the Chinese character'hui'; the storage shell and the concentric-square-shaped metal strip are connected together, the trundles below the concentric-square-shaped metal strip are embedded in the concave supporting strip, marinated meat is placed in the storage shell, a user can push the storage shell into the high-temperature sterilization box body, operation is labor-saving, the trundles roll in the concave supporting strip, resistance is small, and the storage shell is convenient for the user to use. And the user can conveniently clean the placed articles.

The application provides a firmware updating method, a firmware updating device, a computer device and a medium. The firmware updating method comprises the following steps: in the process of firmware updating, a target storage chip is controlled to be in communication with a control chip, so that the control chip writes new firmware of a target drive chip into the target storage chip. Whether the new firmware is successfully written into the target storage chip is determined according to a comparison result between storage data of the new firmware in the target storage chip and complete data of the new firmware in the control chip. If the new firmware is not completely written into the target storage chip, the target drive chip is controlled to be in communication with a historical storage chip of the target drive chip. Through the method provided by the application, in the case of firmware updating failure, the target drive chip can still be started or run by using historical firmware, so that the case that the new firmware storage failure affects the normal work of the target drive chip is avoided, thereby helping to reduce the maintenance cost and reduce the security risk of the server.

The invention provides a method for increasing the calorific value of converter gas. The method comprises the following steps: S1) setting the distance between a movable smoke hood of a converter and a furnace mouth to be 50-100 mm from the lower limit; in the smelting process of the converter, after addition of scrap steel and molten iron is finished, an oxygen lance descends to start oxygen ignition for 20-30 s, then a movable smoke hood of the converter is adjusted to the lower limit, and the included angle of the oxygen lance ranges from 13 degrees to 15 degrees; (S2) in the oxygen supply blowing process of the converter, after ignition is normal, the oxygen pressure is adjusted to 0.80-0.95 MPa; the rotating speed of the dust removal fan is controlled by stages to ensure that the furnace mouth is at micro-positive pressure; s3, after converter smelting is completed, the hot slag is reserved in the converter, and lime is added in batches according to the slag remaining amount and the silicon content of molten iron. By adopting the measures in the converter process, the amount of CO2 generated by combustion of CO in converter gas is reduced, and the calorific value of the gas is increased.

The utility model relates to the technical field of hair dryer, concretely to a hair dryer preventing the blow nozzle from falling off, including hair dryer head and stabilizing device, one side of hair dryer head is provided with blow nozzle body, the surface of hair dryer head is installed with the handle, the lower surface of handle is installed with circuit, the surface of hair dryer head is provided with stabilizing device, stabilizing device includes connecting sleeve, the surface of connecting sleeve and hair dryer head fixed connection, the surface fixed connection of blow nozzle body has the ring, the surface of ring is provided with two limit hole, ring and the inner wall of connecting sleeve are inserted, the inner wall sliding connection of connecting sleeve has the clamping block, the inner wall of clamping block and limit hole are inserted, the surface fixed connection of clamping block has the push rod, the utility model discloses, through setting stabilizing device, can install blow nozzle stably on hair dryer, and blow nozzle will not suddenly fall off in the use process, reduces the possible accidental injury such as scald or scratch to user, improves the stability effect.

The invention relates to the technical field of thermal transfer carbon ribbons, and discloses a high-efficiency thermal transfer carbon ribbon back coating adhesive and a preparation method thereof. Tetrakis(hydroxymethyl)phosphonium chloride, vinyl trichlorosilane and 2,5-bis(trifluoromethyl)terephthalic acid are used as raw materials to synthesize a diene fluorine-containing caged siloxane monomer, and the monomer is polymerized with pentaerythritol tetraacrylate to form a cross-linked organic silicon acrylic copolymer with a hyperbranched cross-linked network structure, which replaces a traditional organic silicon resin mixture. The copolymer is diluted with a single solvent toluene to avoid the use of a multi-component mixed solvent, greatly reduces VOC emissions, and can be recycled. The carbon ribbon back coating adhesive prepared by the invention has good heat resistance and wear resistance, smooth printing, good bonding performance, can enhance heat conduction and lubrication in a printing process, effectively eliminates the risk of static electricity generated in an actual application process, has a good flame retardant effect, and avoids safety hazards.

The utility model discloses a cable core printing and number pasting machine with limiting assemblies, which comprises a machine table and tracks, two sets of tracks are erected at the top end of the machine table along the width direction, two sets of moving seats are connected outside the tracks in a sliding manner, and the right sides of the moving seats are respectively provided with the limiting assemblies used for limiting cable cores and preventing displacement of the cable cores during printing. According to the cable core printing and number pasting machine with the limiting assembly, equal sections of straight cable cores are placed between a movable clamping rod and a fixed clamping rod by arranging the movable clamping rod, one end of each straight cable core is made to be tightly attached to a connecting rod, a servo motor is started, the angles of two sets of rotating arms are driven to change, and two sets of movable bases are pulled to relatively move above a rail; therefore, the four sets of movable clamping rods fixed to the movable base move in the direction of the adjacent fixed clamping rods, the springs are compressed under stress, the cable core is clamped by the movable clamping rods and the fixed clamping rods, the cable core cannot deviate or be staggered, the printing success rate is increased, the yield is increased, and the problem that the cable core is prone to deviating in the printing process is solved.

The invention discloses a wear-resistant tensile composite material for rubber gloves and a preparation method thereof, and belongs to the technical field of new materials, the wear-resistant tensile composite material comprises the following raw materials by weight: 80-100 parts of modified rubber, 10-15 parts of a filler, 3-5 parts of a plasticizer, 1-2 parts of an antioxidant, 2-3 parts of a heat stabilizer, 2-3 parts of a lubricant and 5-8 parts of a vulcanizing agent; the prepared expanded particles serve as polymerization base points of modified polyborosilicate rubber, promote fracture of disulfide bonds in modified ternary rubber and serve as radiation absorption centers to promote crosslinking of the expanded particles and the modified ternary rubber, the mechanical performance of the material is improved, a glassy protective layer is generated by a silicon-boron structure of the expanded particles in the combustion process and covers the surface of the material, and the service life of the material is prolonged. And carbonization of organic matters is promoted, so that the material forms a heat-insulating carbon layer, and the flame retardant property of the material is improved.

The invention discloses a masterbatch with flame retardant function and a preparation method thereof, belonging to the field of polymer materials. The masterbatch comprises the following raw materials in parts by weight: 100-150 parts of linear low-density polyethylene, 15-25 parts of modified fillers, 2-5 parts of dicumyl peroxide and 10-20 parts of toner. When the masterbatch is burned, the organic silicon structure on the surface of the modified filler can form a silicon-carbon layer containing titanium dioxide. Meanwhile, the modifier contains S, P, B and N elements, which can improve the compactness of the carbon layer. The masterbatch contains an aluminum phosphate structure inside, which absorbs heat during high-temperature decomposition to delay combustion and generate polyphosphates. The polyphosphates can inhibit the generation of smoke and toxic gases. The modified filler has a zinc organic framework inside, which releases carbon dioxide and water vapor under high temperature conditions to reduce oxygen concentration, and forms a porous carbon layer containing zinc oxide inside, which can capture smoke and toxic gases.

This invention relates to the field of burner technology, specifically a burner for a gas-fired wall-hung boiler, comprising a rear mounting bracket and a venturi tube mounted on its front side. The front side of the venturi tube is connected to the front mounting bracket, and a temporary storage frame is fixed to the front side of the front mounting bracket. A burner head of the venturi tube is mounted above the venturi tube. In this burner, when the rotating rod drives the convex column to rotate, the convex column intermittently applies a downward thrust to the convex block. This causes the convex block to drive the piston assembly to intermittently reciprocate within the gas storage pipe. Therefore, the piston assembly reciprocates to draw gas and air from the main pipe into the gas storage pipe and then discharges the gas and air from the gas storage pipe. This repeated operation allows for thorough pre-mixing of the pre-mixed gas and air, improving the completeness of subsequent combustion, reducing exhaust emissions, and lowering gas consumption, thus achieving excellent energy-saving and gas-saving effects.