117 results about "PTFE fiber" patented technology

The invention relates to a filter screen and a preparation method and application thereof, and belongs to the technical field of filtering equipment, the filter screen comprises a hydrophobic enhancement layer, a pre-filtering layer and a core filtering layer which are stacked in sequence; the hydrophobic reinforcing layer comprises the following components: metal fibers; the pre-filtering layer is prepared from the following components: basalt fibers; and the core filter layer comprises the following components: polytetrafluoroethylene fibers and polyether-ether-ketone fibers. By designing the structure of the filter screen, the filter screen which can stably work in a high-temperature environment, has excellent hydrophobic performance and filtering efficiency and is controllable in manufacturing cost is obtained.

The invention discloses an industrial flue gas denitration filter bag and a preparation method thereof, and relates to the technical field of flue gas denitration. The industrial flue gas denitration filter bag comprises PTFE (Polytetrafluoroethylene) fibers, PPS (Polyphenylene Sulfide) fibers, PI (Polyimide) fibers and PTFE loaded fibers. Wherein the PTFE loaded fiber is a PTFE fiber layer loaded with a modified molecular sieve catalyst; the modified molecular sieve catalyst takes a molecular sieve coated with modified nanorods as a carrier, a vanadium-titanium composite oxide as an active catalytic component and a cerium-titanium composite oxide as a co-catalytic component; the modified nanorod is a molybdenum-tungsten composite oxide modified cerium dioxide nanorod. By introducing the modified molecular sieve catalyst prepared from cerium dioxide nanorods, lanthanum nitrate, molybdenum trioxide and other raw materials, the denitration capacity, the ammonia escape prevention capacity, the sulfur poisoning resistance, the hydrothermal stability and the working life are further improved, and an active temperature window is widened. Therefore, the method has a wider application prospect.

The invention relates to the technical field of industrial filter materials, in particular to a spunlace filter material for a filter cartridge and a preparation method of the spunlace filter material for the filter cartridge, and the preparation method comprises the following steps: S1, respectively opening and mixing modified polytetrafluoroethylene fibers and polyester fibers to obtain mixed fibers, and carding, lapping, combining and pre-needling the mixed fibers to obtain a pre-needled felt; s2, the pre-needled felt is subjected to spunlace reinforcement and drying shaping, and a filter material plain felt is obtained; s3, singeing the surface of the filter material plain felt, soaking the filter material plain felt in the finishing liquid, mangling the soaked filter material plain felt, and drying to obtain the spunlace filter material for the filter cartridge. The flame retardant property, corrosion resistance and filtering efficiency of the spunlaced filter material for the filter cartridge are comprehensively improved through chemical crosslinking of epoxy groups introduced to the surfaces of the modified polytetrafluoroethylene fibers and amino groups on the surfaces of the modified silicon dioxide and a finishing liquid impregnation technology.

The invention relates to the field of filter materials, and discloses a denitration catalyst-loaded filter bag and a preparation method thereof, the filter bag comprises interface modifier impregnated modified polytetrafluoroethylene fiber and a catalytic additive loaded on the modified polytetrafluoroethylene fiber, the interface modifier is prepared by carrying out hydrolysis-polycondensation on ethyl orthosilicate, perfluorooctyl ethyl trimethoxy silane, trimethyl borate and 3-(2, 3-epoxypropoxy) propyl trimethoxy silane, and the interface modifier is prepared by carrying out hydrolysis-polycondensation on ethyl orthosilicate, perfluorooctyl ethyl trimethoxy silane, trimethyl borate and 3-(2, 3-epoxypropoxy) propyl trimethoxy silane; the catalytic additive is prepared by using polyether PluronicF127, 1, 3, 5-trimethylbenzene and dopamine as raw materials through emulsion-induced interface assembly and externally introducing mesoporous silica to prepare a hollow spherical catalyst carrier, then loading cerium and manganese precursors onto the surface of the hollow spherical catalyst carrier, and coating with a titanium dioxide shell layer. The filter bag prepared by the invention has good denitration activity, sulfur resistance, water resistance, hydrophobicity and friction resistance.

The invention provides a dry-process low-temperature pulse iodine positive electrode preparation method and a battery, and relates to the technical field of iodine positive electrode preparation, the iodine positive electrode preparation method comprises the following steps: mixing elemental iodine with activated carbon to obtain a carbon-iodine composite material, then putting the solid powdery carbon-iodine composite material, a conductive agent and polytetrafluoroethylene into a high-speed stirrer, and stirring at a high speed; and sequentially carrying out constant-speed intermittent pulse stirring, speed-reducing pulse stirring and speed-increasing pulse stirring, and finally rolling to obtain the iodine positive electrode. According to the stirring operation, the temperature rise effect in the high-speed stirring process is inhibited, the mixture obtained after polytetrafluoroethylene fiberization is obtained through low-temperature pulse stirring, the surface of the prepared iodine positive plate is smooth and flat, the cracking phenomenon does not exist, the shearing force is regulated and controlled through low-temperature pulse stirring, mechanical disturbance is weakened, and the iodine positive plate has the good application prospect. And the temperature is reduced to inhibit thermal desorption of iodine molecules, so that the damage to the iodine adsorption effect of porous carbon is reduced, and the mechanical strength and electrochemical performance of the electrode are remarkably improved.

The invention provides a lithium-manganese button cell positive electrode ring prepared based on a dry electrode process as well as a preparation method and application of the lithium-manganese button cell positive electrode ring. The method comprises the following steps: premixing electrolytic manganese dioxide (EMD) powder, a conductive agent and low-melting-point polytetrafluoroethylene (PTFE) fibers in a low-temperature environment; carrying out high-speed shearing on the premixed material to form a dry electrode blank material with self-supporting capability; the obtained dry electrode blank material is subjected to hot rolling through a heating roller device, and an obtained film material is conveyed back to the heating roller device to be subjected to second face rolling; wherein the temperature of the roller is controlled within a temperature range which is lower than the melting point of the PTFE fiber but is enough to enable the PTFE fiber to creep, and meanwhile, high pressure is applied; and die cutting and forming. The positive electrode ring of the lithium-manganese button cell prepared by the method has a unique gradient pore structure and a high-conductivity network, and polarization is greatly reduced, so that the cell is more suitable for an application scene of high pulse current discharge.

The invention belongs to the technical field of filter presses, and discloses a filter press forced cake unloading filter cloth and a forced cake unloading mechanism, the filter press forced cake unloading filter cloth comprises a composite filter cloth, the composite filter cloth comprises a filter layer and a base cloth layer, the filter layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin, and the base cloth layer is formed by compounding polytetrafluoroethylene, polyphenylene sulfide and matrix resin. The warps of the base cloth layer are formed by twisting polytetrafluoroethylene fibers and zirconium oxide fibers. The polytetrafluoroethylene has corrosion resistance, the polyphenylene sulfide has high temperature resistance, and the zirconium oxide fiber has a synergistic effect of thermal shock resistance, so that the composite filter cloth can stably run for a long time in high-temperature, high-pressure and acid-base environments, the problem that traditional filter cloth is easy to age and damage is solved, and the composite filter cloth optimizes the air permeability and the filtering precision, and has a good application prospect. And the filter cloth has the advantages of corrosion resistance, reduction of filtrate leakage pollution, reduction of waste generation, improvement of the service life, meeting of green production requirements, wide application in the fields of industrial dust removal, chemical filtration, aerospace and the like, and higher adaptability compared with the traditional filter cloth.

The invention relates to the technical field of self-lubricating materials, in particular to a self-lubricating fabric gray fabric and a preparation method and application thereof, a self-lubricating liner material and a preparation method and application thereof, and a self-lubricating fabric composite material and a preparation method and application thereof. The preparation method comprises the following steps: sequentially performing first twisting and first sizing on meta-aramid fibers to obtain pretreated meta-aramid fibers; sequentially performing second twisting and second sizing on polytetrafluoroethylene fibers to obtain pretreated polytetrafluoroethylene fibers; weaving the pre-treated meta-aramid fiber and the pre-treated polytetrafluoroethylene fiber to obtain a fabric gray fabric; sequentially performing dopamine-silane coupling agent modification on the gray fabric to obtain the self-lubricating gray fabric. Based on a fabric weaving pretreatment technology and a dopamine-silane coupling agent synergistic interface treatment technology, the prepared self-lubricating fabric grey cloth has excellent bonding strength, has excellent friction and wear properties in a working condition environment with a variable temperature range of-55-230 DEG C, and is long in service life.

The application relates to a filter screen and a preparation method and application thereof, and belongs to the technical field of filtering equipment. The filter screen comprises a hydrophobic reinforcing layer, a pre-filtering layer and a core filtering layer which are sequentially stacked; the hydrophobic reinforcing layer is composed of metal fibers; the pre-filtering layer is composed of basalt fibers; and the core filtering layer is composed of polytetrafluoroethylene fibers and polyether ether ketone fibers. The filter screen can stably work in a high-temperature environment, has excellent hydrophobic performance, high filtering efficiency and controllable manufacturing cost through the design of the structure of the filter screen.

The present application relates to the technical field of battery preparation, and more particularly to a dry method multi-layer composite electrode film, a preparation method thereof, an electrode sheet and a battery. The dry method multi-layer composite electrode film comprises an electrolyte induction layer, an active material layer, a structure layer and a buffer layer. The electrolyte induction layer is formed by a polar organic high-molecular cross-linked organic film base material, and the electrolyte is better infiltrated into the electrode interior through the attraction of polar molecules to the electrolyte. The structure layer is supported by a high-strength organic film, which improves the structure and tensile strength of the dry method electrode self-supporting film. The buffer layer is formed by an elastic organic high-molecule film, which sets an elastic buffer layer for the multi-layer electrode sheet structure, plays a buffering role when the active material particles swell and shrink, and prevents the destruction of the PTFE fiber filament structure or the electrode sheet structure caused by the volume change of the particles. The present application solves the problems of low mechanical tensile strength, poor electrolyte infiltration and weak volume change resistance in the prior art.

The present application relates to filter cotton technical field, specifically, it is a kind of high-temperature oven special heat-resistant filter cotton and its preparation process.It includes the following raw materials: polytetrafluoroethylene fiber, fluoroethylene carbonate, silicone resin, 2,2-dimethylol propionic acid, oil agent, pore-forming agent, adhesive and silicon carbide fiber.In the present application, under high-temperature oven working condition, polytetrafluoroethylene fiber melts and flows to wrap silicon carbide fiber to form "sheath-core" sealing structure, which can block the penetration of corrosive medium;fluoroethylene carbonate decomposition product reacts with the surface of silicon carbide fiber to form nanocomposite layer, its micro-nano level rough interface can induce airflow turbulence, and micropore can prolong airflow path, further improve the diffusion capture efficiency of submicron particles, so that filter cotton can still maintain high interlaminar peeling strength after thermal cycling under high-temperature oven working condition, thereby ensuring the premise of filtration performance to improve the high-temperature resistance of filter cotton.

The utility model discloses a multi-layer composite dust removal filter material bag, which belongs to the technical field of dust removal filter material bags and comprises a filter material bag body and a cage frame, a high-temperature-resistant layer is woven on the surface of the filter material bag body and comprises a PPS (polyphenylene sulfite) fiber layer, a PI (polyimide) fiber layer and a PTFE (polytetrafluoroethylene) fiber layer, through holes are formed in the surface of the cage frame, and connecting columns are arranged in an inner cavity of the cage frame. The connecting column is fixedly connected with the cage frame through a group of reinforcing ribs, the PPS fiber layer, the PI fiber layer and the PTFE fiber layer are consistent in thickness and are 0.3 mm-0. 9mm in thickness, the inner surface of the PPS fiber layer is woven on the outer surface of the PI fiber layer, and the inner surface of the PI fiber layer is woven on the outer surface of the PTFE fiber layer. According to the high-temperature-resistant filter material bag, the characteristics of the PPS fiber layer, the PI fiber layer and the PTFE fiber layer are utilized, so that the filter material bag body has a high-temperature-resistant function and can resist erosion of high-temperature waste gas and corrosive substances, and damage caused by high temperature and chemical corrosion is reduced.

The utility model discloses a high-elasticity polytetrafluoroethylene hose, and belongs to polytetrafluoroethylene tubes. The high-elasticity polytetrafluoroethylene hose comprises a first pure polytetrafluoroethylene hose body, the outer layer of the pure polytetrafluoroethylene hose body is covered with a first polytetrafluoroethylene fiber layer, the outer layer of the first polytetrafluoroethylene fiber layer is covered with an expanded polytetrafluoroethylene layer, and the outer layer of the expanded polytetrafluoroethylene layer is covered with a second polytetrafluoroethylene fiber layer. The outer layer of the second polytetrafluoroethylene fiber layer is sleeved with a second pure polytetrafluoroethylene pipe body. In addition to corrosion resistance, electrical insulation, temperature resistance and the like, the cable also has the advantages of higher elasticity, lower bending strength, smaller bending curvature radius, smooth inner wall, small resistance and the like.

The invention discloses homogeneous dust removal-catalytic dioxin removal filter cloth and a preparation method thereof, and belongs to the technical field of dust removal and catalytic removal of harmful gases such as dioxin. The preparation method comprises the following steps: carrying out loading, drying, roasting and crushing treatment on a catalyst precursor mixed solution and carbon fibers to obtain catalyst-carbon fiber composite powder; the catalyst-carbon fiber composite powder and deionized water are fully stirred and mixed, and a catalyst suspension injection is obtained; and injecting the catalyst suspension injection into the PTFE fiber filter material in a needling injection manner, and carrying out singeing, calendaring, drying and shaping treatment to obtain the homogeneous dust removal-catalytic dioxin removal filter cloth. According to the catalytic filter cloth prepared by the invention, the load rate is obviously improved, a catalyst is uniformly distributed, a dispersed and loose three-layer structure in the prior art is changed into an integrally compact single-layer structure, and the problems of damage and falling of a filter bag body in the prior art can be avoided during back flushing operation.

The invention relates to the technical field of dust removal of high-temperature flue gas, and particularly discloses a production method of a glass fiber PTFE (Polytetrafluoroethylene) base cloth reinforced high-temperature-resistant filter material. The production method comprises the following steps that glass fiber filament yarn is subjected to heat treatment at 350-400 DEG C, the glass fiber yarn subjected to heat treatment passes through composite emulsion and is dried, and warp yarn is obtained; taking the PTFE filament yarns as weft yarns, and making the warp yarns and the weft yarns into woven cloth by adopting a rapier loom, so as to obtain glass fiber PTFE base cloth; the preparation method comprises the following steps: mixing chopped PTFE fibers and chopped glass fibers according to a weight ratio of (4-7): (3-6), opening and carding, and carrying out lapping, grid connection and pre-needling by taking glass fiber PTFE base cloth as base cloth, so as to obtain a composite pre-needled felt; the composite pre-needled felt is subjected to spunlace reinforcement treatment and singeing and then soaked in a stiffening agent, mangling and drying are conducted after soaking, and the glass fiber PTFE base cloth reinforced high-temperature-resistant filter material is obtained. The mechanical property of the filter material can be improved.

The utility model relates to the technical field of laminating machines, in particular to a laminating positioning device for a laminating machine, which comprises a laminating machine body, a base arranged at the lower end of the laminating machine body, a movable block arranged at the upper end of the base, a workbench fixedly arranged on the top surface of the movable block, a groove arranged on the top surface of the workbench, and a plurality of micropores arranged at the bottom of the groove. A cavity is formed in the workbench, a vacuum pump is installed on the side wall of the base through an installation base, the air inlet end of the vacuum pump communicates with a telescopic hose, and two positioning assemblies are installed on the workbench in a central symmetry structure. The pressure in the adsorption process is buffered, stress concentration is avoided, friction and damage to the materials are further reduced, indentation, tearing or deformation of the surfaces of the materials in the attaching process are reduced, the attaching quality and the yield are improved, the problem that the edges of the materials warp or the middles of the materials collapse is solved, and bubbles on the attaching interface are reduced.

The application belongs to the technical field of electronic circuits, and discloses a PTFE low-thermal-expansion-coefficient copper-clad plate and a preparation method thereof.The PTFE low-thermal-expansion-coefficient copper-clad plate comprises a fiber base cloth, the upper surface or / and the lower surface of the fiber base cloth is provided with a metal material layer, the metal material layer is connected with the fiber base cloth through an adhesive layer, and the fiber base cloth is woven by polytetrafluoroethylene fibers or woven by polytetrafluoroethylene fibers and mixed fibers.The copper-clad plate prepared by the application is prepared by hot pressing the fiber base cloth woven by the PTFE fibers with low dielectric constant after thermal stretching and the metal material after coating the adhesive, and has excellent electrical performance, low thermal expansion coefficient, and mature technology, so that the large-scale production of the copper-clad plate is relatively easy to realize.

The invention relates to the technical field of building decoration materials, in particular to a diatomite composite humidity-adjusting decoration plate and a preparation method thereof.According to the diatomite composite humidity-adjusting decoration plate and the preparation method thereof, through the structural design of surface layer moisture absorption, middle layer load bearing and bottom layer moisture removal, certain moisture absorption is achieved through PTFE fibers and wood fibers in a bottom layer, and meanwhile a corresponding drainage channel is provided; on the whole, on the basis of not influencing the overall humidity adjusting performance, the diffusion of humid gas on one side of the bottom layer to the surface layer is reduced, so that the effects of preventing cracking and mildew are achieved.

The scheme provides a super-hydrophilic polytetrafluoroethylene fiber composite diaphragm and a preparation method and application thereof, comprising: a PTFE fiber microporous base film; polydopamine self-polymerized on the PTFE fiber microporous base film; and nano-inorganic oxide connected to the PTFE fiber microporous base film through a coupling agent and polydopamine, wherein the super-hydrophilic polytetrafluoroethylene fiber composite diaphragm has excellent hydrophilicity and ion transmission efficiency, and can realize stable and efficient application in water-based ion electrochemical energy storage devices.

The invention provides an electrode which comprises a current collector and a dry electrode film located on the surface of the current collector, the dry electrode film comprises an active material and a binding agent, the binding agent comprises a fiberized binding agent and a non-fiberized binding agent, the fiberized binding agent comprises polytetrafluoroethylene, and the standard specific gravity value of the fiberized binding agent is 2.140-2.160; the non-fibrillated binder is selected from at least one of polyvinylidene fluoride, a vinylidene fluoride-hexafluoropropylene copolymer, polyacrylic acid and sodium carboxymethyl cellulose, and the weight-average molecular weight of the non-fibrillated binder is 100,000-1,500,000. The electrode has higher rate capability on the basis of ensuring good mechanical properties, electronic conductivity and first efficiency of the dry electrode diaphragm.

The utility model provides a gradient type superfine PPS-aramid fiber high-temperature-resistant composite needled felt which comprises a main filtering layer, a pre-filtering layer and a connecting layer, and the pre-filtering layer and the connecting layer are fixedly connected to the two side faces of the main filtering layer respectively. A first gradient sub-layer, a second gradient sub-layer and a third gradient sub-layer are fixedly connected to the side face, away from the main filtering layer, of the connecting layer in sequence, and a fourth gradient sub-layer is fixedly connected to the side face, away from the second gradient sub-layer, of the third gradient sub-layer; the proportions of PI and PTFE fibers in the first gradient layer, the second gradient layer and the third gradient layer are sequentially increased. According to the scheme, the needled felt with the main filtering layer as a main body is compounded with the fiber net which is formed by penetrating PI into PTFE to serve as base cloth according to different PI and PTFE fiber proportions, and the mode that the aramid nanofiber dispersion liquid is adopted for coating scraping and covering is adopted, so that the scheme can filter dust particles in the atmosphere in a gradient layering mode, and the purpose of improving the filtering effect is achieved.

The present application relates to the technical field of artificial turf, in particular to a self-lubricating and self-cleaning ski artificial turf and a preparation method thereof, which is used to solve the problem that the existing ski artificial turf does not have self-lubricating and self-cleaning functions; the preparation method takes modified nylon 6 as a main raw material; the modified nylon 6 has high toughness, good heat resistance, low friction coefficient and excellent self-lubricating performance; the polytetrafluoroethylene fiber D30 synergistic reinforcing material has high temperature resistance, corrosion resistance and self-lubricating performance; the addition of the modified hydrophobic film and the modified silicone resin coating can significantly improve the self-cleaning ability of the material, so that the prepared ski artificial turf has self-lubricating performance, reduces the frictional resistance during exercise, improves the smoothness of sliding, reduces the equipment loss, and at the same time has self-cleaning ability, so as to ensure that the lawn surface is not easy to accumulate dust and be contaminated.

The utility model relates to the technical field of PTFE (polytetrafluoroethylene) fiber structures, and discloses a tensile PTFE fiber structure which is characterized in that a clamping seat is arranged on a fiber braid layer in a hot-pressing manner, a limiting mechanism is detachably connected in the clamping seat, a jacking mechanism is inserted in the limiting mechanism and is connected in a sliding opening in a sliding manner, the sliding opening is arranged on a net rack in a hot-pressing manner, and the net rack is connected with the clamping seat in a sliding manner. A vertical seat is arranged on the sliding opening, a plug is connected to the vertical seat in a sliding mode, the input end of the plug is in lap joint with the jacking mechanism, the plug is inserted into the limiting mechanism, a clamping seat is installed on the fiber woven layer, a fixing seat can be installed on the clamping seat, and a sliding seat is arranged on the net frame. When the net rack is connected with the fiber woven layer, the sliding seat on the net rack can be pushed into the fixed seat, and the net rack and the fiber woven layer can be quickly assembled after the top plate on the sliding seat is clamped on the circular plate, so that the stretching resistance of the fiber woven layer is realized, and the fiber woven layer is protected.

The invention relates to the technical field of hybrid ionic membranes, in particular to a composite hybrid ionic membrane and a preparation method thereof.The preparation method includes the following steps that S1, membrane liquid is prepared, and raw materials of the membrane liquid include ethylene-butylene copolymer, chlorobenzene, anhydrous zinc chloride, chloromethyl butyl ether, N, N-dimethylformamide, butylated hydroxytoluene and MIL-101 (Cr). According to the preparation method disclosed by the invention, the polytetrafluoroethylene fiber is subjected to chlorosulfonation reaction by treating the polytetrafluoroethylene fiber, and a sulfonic acid group can be introduced into the polytetrafluoroethylene fiber through chlorosulfonation, so that the surface energy and hydrophilicity of the polytetrafluoroethylene fiber are effectively improved; the polytetrafluoroethylene fiber can have good interface bonding force with membrane liquid, so that the membrane liquid and a membrane layer are effectively combined, after hot-pressing polymerization treatment, ethylene-butylene copolymer chain segments actively move and are mutually interspersed and combined at high temperature, more physical entanglement points are formed, and the strength performance of the composite hybrid ionic membrane is effectively improved.

A dry electrode according to the present invention employs: a first binder polymer in which a polymer including polytetrafluoroethylene is fibrillated; and a second binder polymer which has a complex viscosity of 1 Pa·s to 1500 Pa·s at 170°C and 0.1 Hz, thereby improving indentation stiffness, such as the elastic indentation modulus and indentation hardness, while ensuring sufficient tensile strength.

The utility model provides a composite efficient filtering device for PTFE (Polytetrafluoroethylene) fiber filter bag raw materials, which comprises an upper fixing plate, the bottom of the upper fixing plate is fixedly connected with a limiting column, the bottom of the limiting column is fixedly connected with a lower fixing plate, and the surface of the limiting column is provided with a composite filtering mechanism. The adsorption filter material block and the filter assembly perform filtration and adsorption work, and the filter assembly, the groove and the limiting clamping block are matched to quickly fix the filter assembly, so that the filter assembly is quickly replaced, and the situation that the overall replacement cost of the composite filter device is too high is prevented; the filter device is simple in structure, convenient and fast to replace and maintain, the service life of the filter device is prolonged, various materials such as the filter screen, the base cloth layer, the PTFE fiber layer, the protective layer, the nanofiber and the melt-blown cloth are combined with the adsorption filter material block for use, the filter effect is enhanced through combination of the materials, and it is ensured that the device can efficiently remove impurities and pollutants.

The present application relates to dust-free cloth laser cutting technical field, specifically disclose a kind of for dust-free cloth's laser automatic cutting integrated machine and method, including main body, and be provided with material conveying mechanism, laser cutting mechanism and fling and clean mechanism on main body;Black smoke generated by laser cutting dust-free cloth in the laser cutting head of the present application, through the gap between the fiber of the intersection point of polytetrafluoroethylene fiber woven grid is sucked away by the negative pressure generated by conical cabin, reduce the situation that black dot is generated on honeycomb conveyor belt;The molten slag that is melted after laser cutting sticks in the intersection of honeycomb conveyor belt, when honeycomb conveyor belt circulates to bottom, multiple plastic rubber plates on the function roller that is synchronous with honeycomb conveyor belt runs under centrifugal force and self plasticity effect fling and clean operation is carried out to honeycomb conveyor belt, so that the molten slag of honeycomb conveyor belt intersection is vibrated and falls into conical cabin, without manual cleaning, reduce downtime, provide the laser cutting efficiency of dust-free cloth.

The invention relates to the field of self-lubricating materials, in particular to sulfonated PAEK resin, sulfonated PAEK sizing PTFE fibers, a self-lubricating gasket and a preparation method of the self-lubricating gasket. Wherein the sulfonated PAEK resin is prepared from the following raw materials in parts by mass: 50 to 100 parts of sulfonated PAEK powder and 5 to 10 parts of a lubricating additive; the sulfonated PAEK powder is prepared from the following raw materials: 3, 5, 3 ', 5'-tetramethyl-4, 4 '-dihydroxybiphenyl, 2, 5-potassium dihydroxybenzenesulfonate, 4, 4'-difluorobenzophenone and a catalyst. According to the sulfonated PAEK resin disclosed by the invention, the strength and the lubricity of the PTFE fiber are improved through the sulfonated PAEK powder and the lubricating additive, and the defects of insufficient lubrication and low strength of the pure PTFE fiber can be effectively overcome.

The invention discloses a preparation method of a catalytic polytetrafluoroethylene composite filter material for removing dioxin. The preparation method comprises the following steps: step 1, uniformly mixing catalyst powder, a polytetrafluoroethylene dispersion emulsion and a polyoxyethylene solution to prepare a mixed solution; step 2, preparing micro-scale fibers from the mixed solution in the step 1 through a blowing process, gathering the micro-scale fibers to form a net, and sintering at high temperature to form a catalytic micro-scale polytetrafluoroethylene fiber membrane; 3, sequentially overlapping the first fiber layer, the catalytic microscale polytetrafluoroethylene fiber membrane in the step 2, base cloth and the second fiber layer from top to bottom to form a composite structure; and step 4, needling and compounding the compounding mechanism in the step 3 through a needling mechanism to form the compound filter material. Dioxin catalytic powder particles are embedded into polytetrafluoroethylene microscale fibers by adopting a liquid spraying technology, and compared with a manner of loading a catalyst on the surface, the loading stability of the catalytic powder particles is improved, and the service life of the catalytic filter material is prolonged.

The utility model relates to the field of high-sulfur waste desulfurization, in particular to a demisting device for high-sulfur waste desulfurization, which comprises a tower body, a spiral guide vane component and a multi-stage filter component, the spiral guide vane component comprises a spiral vane, a driving component and a support, the support is arranged in the tower body, and the spiral vane is arranged in the tower body. The driving assembly is arranged at the lower end of the tower body, the spiral blade is arranged on the support, the lower end of the spiral blade is connected with the driving assembly, a T-shaped flow guide groove is formed in a spiral blade array, and the multi-stage filtering assembly comprises a hydrophobic modified PTFE fiber woven adsorption block layer and a sulfur-philic modified glass fiber cotton adsorption block layer which are arranged upwards. A nano zinc oxide loading coating is arranged on the surface of the sulfur-loving modified glass fiber cotton adsorption block layer, an air outlet is formed in the top of the tower body, a liquid discharging groove is formed in the bottom of the tower body, and an air inlet located above the support is formed in the middle of the tower body.