484 results about "Viton" patented technology

The invention relates to the technical field of cables, and discloses a multi-layer composite wrapped high-temperature-resistant anti-aging cable which sequentially comprises a conductor, an insulating cable core, a shielding layer, an outer insulating layer, a fireproof layer, a heat insulation layer, a buffer cushion layer, an armor layer, an anti-aging layer and an outer sheath layer from inside to outside. The fireproof layer is formed by alternately laminating synthetic mica tapes and ceramic boron silicone rubber tapes, a reliable fireproof barrier is formed, and the heat insulation layer is arranged to achieve efficient heat insulation and stable structure through cooperation of gradient pore nano aerogel, ceramic silicone rubber round rods and phase change capsules. The buffering cushion layer is combined with the composite layer, the aluminum oxide hollow ball array and the composite capsule, so that the mechanical buffering and auxiliary heat insulation functions are achieved; the armor layer is woven by stainless steel fibers, the mechanical protection capability is improved, and the anti-aging layer is of a double-layer structure composed of montmorillonite composite fluororubber and an anti-oxidation layer, so that thermal oxidation aging is delayed.

The invention relates to a composite cable, and relates to the technical field of cables, the composite cable comprises a conductor layer, a composite insulating layer, a waterproof layer, a weather-proof sheath layer and an armor layer from inside to outside in sequence, the conductor layer comprises at least six tinned copper conductors, the tinned copper conductors are symmetrically arranged in a regular hexagon shape, dielectric elastomers are filled among the conductors, and the dielectric elastomers are arranged between the tinned copper conductors. The composite insulating layer comprises an inner shielding layer, a main insulating layer and an outer shielding layer from inside to outside, the waterproof layer is a fluororubber extruded layer, the weather-proof sheath layer comprises a bonding transition layer and a weather-proof functional layer, and the armor layer is of a stainless steel band spiral wrapping structure. The composite cable can meet the requirement for high performance in a harsh environment and can show excellent performance under the extreme conditions of low voltage, large day and night temperature difference, strong ultraviolet rays, sand and dust abrasion, acid rain corrosion and the like.

The invention discloses a polymer sealing ring and a preparation method thereof, and relates to the technical field of polymer materials. The high-temperature-resistant fluororubber sealing gasket is prepared from the following raw materials in percentage by mass: 30 to 50 percent of fluorinated modified silicone rubber, 15 to 25 percent of fluororubber, 7.2 to 16.4 percent of hybrid white carbon black, 2.5 to 6 percent of hydroxyl silicone oil, 8 to 11 percent of plasma fluorinated modified aluminum oxide, 4 to 8 percent of carbon black, 0.8 to 1.4 percent of palm wax, 0.8 to 1.4 percent of internal release agent, 1 to 2 percent of vulcanizing agent, 3 to 5 percent of triallyl isocyanurate and 0.5 to 1 percent of anti-aging agent. The fluorinated modified silicone rubber is prepared by grafting C2-18-perfluoroalkyl iodoethane on a silicone rubber side chain, so that the low temperature resistance of the silicone rubber is effectively improved, and the phenomenon that methyl vinyl silicone rubber is easy to crystallize at low temperature is successfully inhibited; the sealing ring material has good performance at high and low temperatures, and the use temperature range of the sealing ring material is effectively improved.

The invention provides a metal plate frame and fluororubber sealing assembly and a preparation method thereof, and the preparation method is applied to the technical field of semiconductor sealing and comprises the steps that S1, a metal plate frame is coated with an adhesive, dried and then cooled, and the adhesive is a trithiocyanuric acid derivative solution; s2, a cross-linking agent and an addition agent are added in the thin-passing mixing process of the perfluoroether elastomer, a mixed rubber compound is obtained, the addition agent comprises fluorinated silicon dioxide, fluorinated titanium dioxide or PFA micro powder, and the mass of the addition agent is 2-10% of the mass of the perfluoroether elastomer; and S3, the mixed rubber sheet is placed in a metal plate frame, the metal plate frame with the mixed rubber sheet is placed in a mold to be subjected to hot pressing vulcanization forming, then secondary vulcanization is conducted, then radiation vulcanization is conducted, and the assembly is obtained. The assembly prepared through the method is resistant to plasma etching and high in cleanliness, the bonding performance of the perfluoroether rubber and the metal plate frame is good, and the rate of finished products is high.

The invention relates to a sealing structure of a flexible waterproof FFC wire harness and a forming process, and belongs to the technical field of automobile electronic wire harness manufacturing, the sealing structure comprises an FFC wire, a connector shell, a sealing ring and a blanking cap, the sealing ring is made of a fluororubber and hydrogenated butadiene-acrylonitrile rubber composite modified material, the connector shell is made of a glass fiber reinforced PP or PA66 material, and the blanking cap is made of a glass fiber reinforced PP or PA66 material. Under the cooperation of a vulcanizing agent system and an anti-aging agent system, double-material injection molding is adopted for integral forming, and double sealing is achieved through interference fit of the blanking cap and the sealing ring. The waterproof grade of the FFC wire harness reaches IP67, the weight is reduced, the size is reduced, the production efficiency is improved, and the FFC wire harness can be widely applied to wet area scenes such as automobile door lines, ceilings and seats, has the cost advantage and the environmental protection benefit, and has remarkable industrial application value.

The invention discloses a flame-retardant cable and a preparation method thereof. The cable comprises conductor wire cores, a fireproof layer, an insulating layer, a shielding layer, a filling layer and a sheath layer from inside to outside. According to the cable sheath layer, 100 parts of high density polyethylene (HDPE), 5-15 parts of ethylene-vinyl acetate rubber and 3-10 parts of fluororubber are used as main materials, triallyl isocyanurate and bisphenol A diallyl ether are introduced for synergistic crosslinking, and nano montmorillonite is used as an auxiliary material, so that a compact interpenetrating network is constructed. The tensile strength of the sheath layer composite material is greater than or equal to 26.5 MPa, the elongation at break is greater than or equal to 387%, the performance retention rate is greater than 92% after the sheath layer composite material is soaked in slurry for 28 days, the limit oxygen index is greater than 38%, the water vapor transmission coefficient is less than or equal to 1.5 * 10 <-4 > g.mm / (m < 2 >. D.Pa), and the sheath layer composite material has excellent flame retardance, barrier property and slurry resistance and is suitable for harsh outdoor environments such as rail transit.

The invention discloses a sealing gasket for an energy storage hydrogen production electrolytic cell and a preparation method of the sealing gasket, and belongs to the technical field of sealing gasket production. Comprising the following steps: carrying out surface treatment on glass fibers, and carrying out hot-pressing mixing with a polyimide block copolymer to obtain a supporting layer; glass fibers are subjected to surface treatment and then hot-pressed and mixed with the polyimide block copolymer to obtain a supporting layer; the polytetrafluoroethylene, the triallyl isocyanurate and the nano silicon dioxide are mixed and stirred, and the sealing layer is obtained through injection molding after radiation crosslinking; the epoxy resin matrix, the modified fluororubber and the anti-aging agent are subjected to banburying and vulcanization to obtain the protective layer; and the supporting layer, the sealing layer and the protective layer are sequentially stacked, hot-pressed and compounded to obtain the sealing gasket. The sealing gasket for the energy storage and hydrogen production electrolytic cell is improved in structural stability and has good creep resistance and chemical resistance.

The invention relates to a sealing rubber ring, and belongs to the technical field of sealing materials. The problems that a traditional sealing rubber ring is narrow in temperature resistance range, poor in medium corrosion resistance, unbalanced in mechanics and elasticity, short in anti-aging service life and prone to precipitation and pollution are solved. The material is composed of a base material, a composite anti-precipitation filler and auxiliary components, the base material contains four components including modified fluororubber and the like, the composite anti-precipitation filler contains modified nano calcium carbonate and the like, and the auxiliary components contain vulcanizing systems, reinforcing systems and the like. The modified fluororubber is prepared by a specific process. The preparation method comprises the following steps: banburying, standing, vulcanizing, cooling and removing flash. The rubber ring has the advantages of wide temperature-resistant range, medium corrosion resistance, aging resistance, balanced mechanical properties and no precipitation pollution, and is suitable for industrial scenes with extreme temperature difference, strong corrosion and the like.

The invention discloses a low-dielectric-constant polyamide material, and relates to the technical field of high polymer materials. The invention discloses a low-dielectric-constant polyamide material. The composite material is prepared from the following raw materials in parts by weight: 35 to 45 parts of polyamide 66, 5 to 10 parts of polytetrafluoroethylene micro powder, 8 to 12 parts of modified porous siloxane microspheres, 3 to 7 parts of modified nano zinc oxide, 10 to 15 parts of glass fibers, 4 to 8 parts of polyether-ether-ketone, 1 to 3 parts of graphene nanosheets, 3 to 5 parts of fluororubber, 1 to 2 parts of a titanate coupling agent, 0.3 to 0.7 part of an antioxidant 1010, 0.5 to 1.0 part of ethylene bis stearamide and 0.1 to 0.3 part of an ultraviolet absorbent UV-531. The low-dielectric-constant polyamide material has the remarkable advantages that the raw materials are scientifically proportioned, and various modified components are contained to enhance the performance; all the components are subjected to special treatment, so that the compatibility is good; the preparation process is rigorous, and the material has excellent dielectric properties; and the material also has good heat resistance and weather resistance and strong mechanical properties, and is suitable for various scenes with high dielectric constant requirements.

The invention discloses a corrosion-resistant double-suction type chemical pump. The corrosion-resistant double-suction type chemical pump comprises a pump body, an impeller assembly, a sealing device and a driving mechanism. The sealing device adopts a fluororubber elastic compensation piece and is provided with a cooling system, a shock pad and a drainage groove are arranged at the bottom of the supporting frame, and a convenient access hole is formed in the top of the supporting frame. By optimizing the material and structural design, the corrosion resistance and maintenance convenience are remarkably improved, the problems that under the strong corrosion working condition, aging is likely to happen, and sealing fails are effectively solved, and the high practicability and popularization value are achieved.

The application relates to the field of chemical-proof fabrics, and particularly discloses a flame-retardant chemical-proof fabric and a preparation process thereof. The flame-retardant chemical-proof fabric comprises, from outside to inside, an outer layer, a bonding layer, a framework layer, a bonding layer and an inner layer which are sequentially contacted, the outer layer is a barrier layer, the inner layer is a barrier layer or an adsorption layer, the framework layer is selected from at least one of a composite fabric of aramid fiber / polyimide fiber, a basalt fiber cloth, a glass fiber cloth, a flame-retardant polyester cloth and a flame-retardant acrylic fiber cloth, the barrier layer is selected from at least one of a PVC / TPU composite film, a PVC film, a PTFE film, a PE film, silicone rubber, fluororubber, butyl rubber, chloroprene rubber and natural rubber, and the adsorption layer comprises a mixed fabric layer formed by nylon fiber and polyester fiber containing an adsorption material. The flame-retardant protective fabric has the advantages of high flame-retardant capacity, good chemical-proof effect, excellent puncture resistance and tensile resistance, can absorb moisture and sweat, and is comfortable to wear.

The invention relates to the technical field of rubber materials, and discloses fluororubber for a high-temperature oxygen sensor and a processing technology of the fluororubber. The processing technology comprises the following steps: S1, preparing fluorinated modified methyl vinyl silicone rubber from methyl vinyl silicone rubber and 1H, 1H, 2H, 2H-perfluorodecanethiol; s2, preparing glycerol modified silicone rubber from methyl vinyl silicone rubber and 1-thioglycerol; taking glycerol modified silicone rubber, adding into a mixed solvent of tetrahydrofuran and water, uniformly stirring, adding urea, heating, dropwise adding phosphoric acid, carrying out heat preservation reaction, removing the solvent, and drying to obtain phosphate modified methyl vinyl silicone rubber; and S3, adding the broken fluororubber, the fluorinated modified methyl vinyl silicone rubber and the phosphate modified methyl vinyl silicone rubber into an open mill, uniformly mixing, adding the composite filler and magnesium oxide, mixing, adding the vulcanizing agent and the assistant crosslinking agent, uniformly mixing, and vulcanizing to obtain the fluororubber for the high-temperature oxygen sensor.

The invention belongs to the field of polymer elastomer materials. The invention provides a modified fluorine-containing rubber and a preparation method thereof, the modified fluorine-containing rubber is obtained by modifying matrix rubber by a compound modified inorganic filler with a linear or branched polyether structure, a main chain connected with hydroxyl and a side chain containing a sulfydryl group, and the surface of the inorganic filler has hydroxyl. The dispersity and precipitation resistance of the modified fluorine-containing rubber and the inorganic filler in the fluorine-containing rubber are remarkably improved, the modified fluorine-containing rubber and the inorganic filler are kept stable in a long-term high-temperature and strong-corrosion medium, a hydrogen bond and covalent bond dual-interface bonding mechanism is adopted, a high-stability interface is constructed in a low-polarity system through the synergistic effect of hydrogen bond adsorption and covalent bonding, and the high-stability fluorine-containing rubber is obtained. The super-uniform dispersion and interface enhancement of the inorganic filler in a low-polarity fluorine-containing rubber system are realized, and the inorganic filler can be widely applied to the fields of semiconductor high-cleanliness sealing elements, high-temperature chemical corrosion-resistant elastomers and the like.

The utility model relates to the technical field of rubber sealing ring performance detection devices, in particular to a material toughness detection device for preparing a fluororubber sealing ring, which comprises a device body, a first support and a second support are sequentially fixed on the device body from top to bottom, a cylinder is fixed on the first support, and a piston rod is mounted at the output end of the cylinder. A pressing plate is fixed to the bottom end of the piston rod, an outer fixing ring is fixed to the second support, a rotating disc is rotationally arranged in the outer fixing ring, a plurality of arc-shaped grooves are formed in the rotating disc, a plurality of first I-shaped clamping grooves are formed in the outer fixing ring, movable rods penetrating through the arc-shaped grooves are slidably clamped in the first I-shaped clamping grooves, and first clamping plates are fixed to the movable rods; according to the multi-directional tensile strength detection device for the fluororubber sealing ring, the multi-directional tensile strength detection test of the fluororubber sealing ring can be realized at one time, and the working efficiency of the tensile strength detection of the fluororubber sealing ring is greatly improved.

The invention relates to the field of power cables, and particularly discloses an acid and alkali resistant waterproof power cable. The acid and alkali resistant waterproof power cable comprises a conductor layer, an insulating layer and a sheath layer which are sequentially arranged from inside to outside, the preparation method comprises the following steps: S1, preparing the conductor layer: smelting electrolytic copper, tin, silver and rare earth elements, and then performing wire drawing, and controlling the wire drawing speed to be 10-15m / s to obtain a conductor wire core; s2, extrusion of an insulating layer: mixing fluororubber, epichlorohydrin rubber, nano-silica and a flame retardant, and extruding the mixture at 70-90 DEG C by a twin-screw extruder to coat the conductor layer; s3, extruding a sheath layer: mixing the raw materials, and coating the raw materials outside the insulating layer at 60-85 DEG C by a single screw extruder; s4, irradiation crosslinking: carrying out electron beam irradiation on the coated cable; and S5, cooling and rolling. The cable can be used in a highly corrosive environment, and has the advantage of avoiding premature failure of the sheath layer of the power cable in the highly corrosive environment.

The application relates to the technical field of rubber sealing materials, and discloses a high and low temperature resistant fluororubber sealing element and a preparation method thereof. The high and low temperature resistant fluororubber sealing element is prepared from fluororubber raw rubber, reinforcing fillers, inorganic fillers, acid absorbents, processing aids and vulcanizing agents, wherein the acid absorbents are prepared from metal hydroxides and metal oxides in a mass ratio of (2-5):(1-3), and the processing aids are prepared from amide flow aids, polyethylene wax and fatty acid metal salts in a mass ratio of (1-2.5):(0.8-2):(0.5-1). The prepared high and low temperature resistant fluororubber sealing element has excellent mechanical properties, high temperature resistance, low temperature resistance and compression permanent deformation performance, and effectively solves the technical problems of easy aging of existing fluororubber sealing elements at high temperatures, large compression permanent deformation and easy brittle cracking at low temperatures. The preparation method adopts a mixing and vulcanization process, the preparation method is simple, and the method is suitable for large-scale production.

The utility model discloses a kind of flexible inner container pressure-bearing hot water storage tank, belong to the technical field of hot water storage equipment, including water storage tank main body, water inlet pipe is installed on water storage tank main body upper end, water outlet pipe is installed on water storage tank main body lower end, flexible inner container is fixedly connected in water storage tank main body, multiple evenly distributed pressure-bearing rings are arranged between flexible inner container and water storage tank main body inner wall, pressure-bearing ring includes the connecting ring being connected with water storage tank main body inner wall, multiple evenly distributed elastic contact rods are embedded and arranged in connecting ring, flexible connecting rod is connected between each elastic contact rod and flexible inner container, the flexible inner container is made of fluorine rubber, silicon rubber or temperature-resistant polyurethane material, elastic contact rod is made of elastic metal material, and rubber layer is covered on the surface of elastic contact rod, can be realized through setting pressure-bearing ring, can promote its inner flexible inner container when storing water has stronger buffering effect, improve the pressure-bearing performance of flexible inner container.

The present invention discloses a fluororubber-in-cloth material for large oil cylinder V-group seals and its preparation method. The fluororubber-in-cloth material comprises a polyester cloth as a skeleton material and a fluororubber compounded onto the polyester cloth surface via a treatment agent; the treatment agent is a dopamine-grafted silane coupling agent, KH-550; and the fluororubber is a vinylidene fluoride-hexafluoropropylene co-fluororubber. This invention solves the bonding problem between the fluororubber and the polyester cloth. The resulting fluororubber-in-cloth material exhibits excellent water and salt spray resistance in marine environments, meeting the high reliability requirements of large oil cylinder V-group seals over a 20-year service life.

The invention discloses an antistatic teflon sleeve and a preparation method thereof. The antistatic teflon sleeve is prepared from the following components in parts by weight: 80-95 parts of teflon resin, 5-20 parts of a core-shell structure conductive filler, 1-3 parts of a compatilizer, 0.5-2 parts of a flexibilizer and 0.1-0.5 part of an antioxidant. The outer protective layer is prepared from the following components in parts by weight: 70 to 85 parts of ethylene-tetrafluoroethylene copolymer, 5 to 15 parts of modified nano silicon dioxide, 5 to 10 parts of fluororubber, 1 to 3 parts of antistatic aid and 0.1 to 0.5 part of ultraviolet absorbent. Through the design of the core-shell structure conductive filler, the core layer nano copper powder provides high conductivity, the shell layer PVDF has good compatibility with the Teflon base material, the surface modification layer further enhances the interface bonding force, the volume resistivity of the inner layer base material is reduced, and the antistatic requirement is met; the conductive filler is uniformly dispersed in the base material instead of a surface coating, so that the antistatic performance failure caused by friction or bending is avoided, and the antistatic performance is lasting and stable.

The utility model discloses an anti-corrosion garbage pipeline baffle device, and relates to the technical field of garbage pipelines. Comprising a mounting pipe frame, a sliding groove is formed in the inner wall of the mounting pipe frame, and a blocking assembly is arranged on the inner wall of the sliding groove. At the moment, the multiple compression springs extend to push the two ethylene propylene rubber plates to move, so that the protruding end of the right ethylene propylene rubber plate abuts against the inner wall of a sealing groove formed in the side wall of the left ethylene propylene rubber plate, and therefore the inner wall of the mounting pipe frame is blocked; secondly, when the two ethylene propylene rubber plates abut against each other, the fluororubber disc is pulled through an oil rope, so that the surface of the fluororubber disc tightly abuts against a conical arc edge formed in the top face of the mounting pipe frame, and the probability that the fluororubber disc is corroded by acid-base components in the garbage pipeline through the two ethylene propylene rubber plates is reduced; and therefore, harmful gas in the garbage pipeline is prevented from polluting air through the fluororubber disc.

A hot press cushioning material includes fluororubber. A composition of the fluororubber includes a fluororubber component, a vulcanizing agent, an acid acceptor, and a dehydrating agent.

The invention relates to the technical field of CNC machine tools, and discloses an electric actuator for a CNC machine tool, the electric actuator comprises a harmonic reducer, the right end face of the harmonic reducer is fixedly connected with a motor shell, and the right end face of the motor shell is fixedly connected with a bottom shell. According to the electric actuator for the CNC machine tool, through the application of the harmonic reducer, high-precision and high-rigidity transmission is achieved, the requirements of the machine tool for position precision and dynamic response in the complex machining process are met, the hollow shaft enables the actuator to be compact in structure, electrical elements can be conveniently integrated into the limited space of the CNC machine tool, nitrile rubber and fluororubber are selected as the sealing rings, and the sealing performance is good. Oil resistance and solvent resistance under different working conditions are respectively guaranteed, the cable connector is made of engineering plastics, durability and appearance quality of the actuator are improved while electrical performance is guaranteed, the structural strength of the actuator is enhanced due to the design of the support and the reinforcing ribs, the actuator can bear larger load and vibration, and overall reliability is improved.

The invention discloses a temperature-resistant heat-insulation sealing metal-rubber composite material which comprises a metal phase, a rubber phase and a binder, the preparation method of the temperature-resistant heat-insulation sealing metal rubber composite material comprises the following steps: step 1, sintering and molding metal fibers to obtain a three-dimensional porous metal framework; 2, fluororubber and silicone rubber are added into an internal mixer to be blended, then hollow glass beads and carbon black are sequentially added, the mixture is mixed to be uniform, and rubber mixed rubber is prepared; 3, the surface of the metal framework is coated with a binding agent, the binding agent is covered with the rubber compound, and the whole material is placed in a vulcanizing machine to be vulcanized; and 4, integrally transferring the vulcanized material into a drying oven for secondary vulcanization, and cooling to obtain a composite material finished product. The composite material is applied to the field of space flight and aviation. The invention aims to solve the problems of narrow temperature resistance range, non-ideal heat insulation effect and obvious reduction of high-temperature mechanical properties of the existing material, so as to meet the use requirements of aerospace equipment in a complex thermal coupling environment.

The invention relates to a corrosion-resistant marine cable and a preparation method thereof.The corrosion-resistant marine cable comprises a wire core composed of a conductor and an insulating layer wrapping the conductor, and further comprises a gradient composite corrosion-resistant sheath wrapping the wire core, and the gradient composite corrosion-resistant sheath is of a three-layer co-extrusion integrated structure and comprises a bottom layer combined with the insulating layer, the bottom layer comprises the following components in parts by weight: 80-90 parts of thermoplastic polyurethane and 10-20 parts of a corrosion inhibitor; the middle layer is coated outside the bottom layer and comprises the following components in parts by weight: 90-99 parts of chlorinated polyethylene and 1-10 parts of graphene modified epoxy resin; and the surface layer is coated outside the middle layer and comprises the following components in parts by weight: 95-99 parts of fluororubber and 1-5 parts of carbon nanotubes. When the corrosion-resistant marine cable is applied to a complex corrosion environment with high salt mist and much oil dirt in the ocean, the corrosion-resistant marine cable has good comprehensive protection capability, and the service life of the cable is remarkably prolonged.

The application relates to the technical field of molecular distillation equipment, and discloses a vacuum pressure system of a multi-stage molecular distillation equipment, which comprises an outer pipe connecting end, an inner pipe connecting end, a distiller and a monitoring mechanism; the monitoring mechanism is arranged in the interlayer of the outer pipe connecting end and the inner pipe connecting end, is used for monitoring the sealing condition of the outer side of the gap of the inner pipe connecting end, and seals the leakage point after the leakage point appears, and informs the personnel to repair. The vacuum pressure system of the multi-stage molecular distillation equipment is characterized in that the monitoring mechanism is arranged in the interlayer of the outer pipe connecting end and the inner pipe connecting end, the attaching sheet of a plurality of sealing components is annularly wrapped around the inner pipe connecting end, and the protection shell is filled with gas-expanding fluorine rubber particles; when the leakage point appears, the attaching sheet is firstly moved to the leakage point to preliminarily seal the leakage point, and then the filler is expanded to further press the attaching sheet to tightly adhere to the leakage point, so that the problem that the connecting end is prone to generating the leakage point and the product quality is reduced in the prior art is solved.

The utility model discloses a floor board with a good stain-resistant effect, which comprises a board body, a wear-resistant layer is arranged on the outer surface of the board body, the wear-resistant layer comprises a polyurethane coating and a fluorocarbon rubber coating, a stain-resistant layer is arranged on the outer surface of the wear-resistant layer, the stain-resistant layer comprises a polypropylene coating and an epoxy resin coating, the board body comprises a substrate layer, and the substrate layer comprises a polyurethane coating and a fluorocarbon rubber coating. A clamping groove part is arranged on the left side of the base layer, a protruding part is arranged on the right side of the base layer, the polyurethane coating is arranged on the outer surface of the plate body in a coating mode, the fluorocarbon rubber coating is arranged on the outer surface of the polyurethane coating in a coating mode, the polypropylene coating is arranged on the outer surface of the fluorocarbon rubber coating in a coating mode, and the epoxy resin coating is arranged on the outer surface of the polypropylene coating in a coating mode. According to the utility model, the stain-resistant layer is arranged, the epoxy resin coating contained in the stain-resistant layer can carry out first-layer stain-resistant protection treatment on the plate body, and the polypropylene coating can carry out second-layer stain-resistant protection treatment on the plate body after the epoxy resin coating is damaged, so that the stain resistance of the whole plate body is effectively improved.

The utility model relates to a high-temperature-resistant elastic fluorine band, which belongs to the technical field of fluorine bands and comprises a fluorine band body wound into a reel shape, the fluorine band body comprises a stainless steel band and full-fluorine rubber pads, the full-fluorine rubber pads are arranged on the inner side and the outer side of the stainless steel band, and fixed support plates are arranged on the full-fluorine rubber pads. Two sets of side plates are sequentially fixed to the front face of the fixed supporting plate in the vertical direction, first limiting assemblies for positioning the fluorine belt body are arranged on the side plates, and each first limiting assembly comprises auxiliary winding drums rotationally arranged on the sides, close to each other, of the side plates; the fixing support plate is provided with a second limiting assembly used in cooperation with the first limiting assembly, and due to the design of the first limiting assembly and the second limiting assembly, various and multi-directional binding structures are adopted, so that the binding firmness of the fluorine band body is greatly improved; the binding structure can be effectively prevented from being broken easily in the winding and transferring process of the fluorine belt body.

The invention relates to the technical field of wire and cable manufacturing, in particular to an anti-corrosion cable and a preparation method thereof, and the anti-corrosion cable comprises a conductor, an anti-corrosion isolating layer, an insulating layer, an armor layer and an outer sheath from inside to outside. The surface of the conductor is plated with an aminated graphene-nickel-phosphorus composite plating layer; the anti-corrosion isolating layer contains 30-40 parts of fluorine rubber, 10-15 parts of nano boron nitride-silicon dioxide core-shell particles and the like; the insulating layer contains 45-55 parts of crosslinked polyethylene, 8-12 parts of montmorillonite-carbon nanotube-graphene composite powder and the like; the armor layer is formed by compounding a basalt fiber-glass fiber composite filament woven mesh and a polyether-ether-ketone-polyimide composite film; and the outer sheath contains 25-35 parts of chlorinated polyethylene, 5-8 parts of nano titanium dioxide-cerium oxide composite powder and the like. The corrosion-resistant cable has the advantages of corrosion resistance, strong weather resistance, excellent electrical and mechanical properties, long service life and low maintenance cost, can stably operate for a long time in severe environments such as high salinity and high humidity, and is suitable for multi-corrosion scenes.

The invention provides a silica aerogel modified PVDF / FKM thermoplastic elastomer and a preparation method thereof, specifically, silica aerogel is pretreated with a coupling agent KH570, ultraviolet light modification is performed, the silica aerogel is used for preparing modified fluororubber (FKM), and finally PVDF and the modified FKM are prepared into the PVDF / FKM thermoplastic elastomer in a torque rheometer. Performance testing is carried out on the PVDF / FKM thermoplastic elastomer, and results show that the crosslinking degree of the FKM is favorably improved through ultraviolet light treatment, the crosslinking degree of the FKM treated for 20 minutes is the maximum, the S '(MH) value is 20.56 dN.m, the tensile strength of the PVDF / FKM thermoplastic elastomer is the maximum and 24.5 MPa when the use amount of KH570 is 3%, and a positive correlation relation exists between the tensile strength and a torque value; and the heat conductivity coefficient of the elastomer modified by ultraviolet light is obviously reduced. The material can be used for corrosion-resistant cables and the like.

The utility model relates to a head nut technical field, especially a four fluorine outer clothing head nut for fixing fluorine plastic board, including nut body, still including sealing along and installation component, nut body lower extreme fixedly connected with sealing along, nut body outer surface is equipped with a layer of polytetrafluoroethylene outer clothing, and nut body upper end is provided with installation component, the utility model discloses through sandblasting treatment surface, and polytetrafluoroethylene powder is evenly sprayed on the nut body surface, and the dense outer clothing layer is formed through high -temperature sintering, through the high chemical stability and high temperature resistance of polytetrafluoroethylene outer clothing, make the nut service life extension, through filling high -temperature sealant and three millimeter thick soft four fluorine round pad or three millimeter thick high -temperature fluorine rubber pad in the sealing groove, further promote the sealing performance, solved because PTFE board itself welding fusibility just has no PFA effect good, and the welding firm degree is lower, and fluorine plastic cap is easy to crack under the flue harsh environment, causes the corrosion of bolt, leads to the problem of poor sealing.