297results about How to "Good anti-aging performance" patented technology

The invention provides anti-aging polyurethane-zirconium phosphate composite modified asphalt and a preparation method thereof, and belongs to the technical field of building material preparation. The anti-aging polyurethane-zirconium phosphate composite modified asphalt is prepared from the following components in parts by weight: 100 parts of matrix asphalt, 3 to 15 parts of an isocyanate prepolymer, 1 to 8 parts of organic zirconium phosphate, 0.001 to 0.1 part of a catalyst and 2 to 5 parts of a solubilizer, wherein the organic zirconium phosphate is prepared by carrying out ultrasonic intercalation treatment on zirconium phosphate by adopting organic molecules. Compared with the traditional polyurethane modified asphalt, the organic zirconium phosphate in the anti-aging polyurethane-zirconium phosphate composite modified asphalt has a polyurethane cross-linked network structure, can effectively improve the high and low temperature performance of the asphalt, has a layered structure, can absorb ultraviolet rays, and can effectively improve the anti-aging performance of the asphalt. Therefore, organic molecules in the polyurethane asphalt are protected from being oxidized, the anti-aging performance is excellent, and the service life of an asphalt pavement is prolonged.

The invention provides a cable insulation material for large-length extrusion, a preparation method and application of the cable insulation material and a cable. The cable insulation material for large-length extrusion comprises polyethylene, an antioxidant, a cross-linking agent and a cross-linking aid. According to the cable insulation material for large-length extrusion provided by the invention, the insulation material is subjected to blending modification from a formula stage, and the prepared insulation material is small in pressure fluctuation, good in stability and smooth in discharging when being subjected to large-length extrusion by regulating the property of polyethylene and adopting the specific antioxidant and the cross-linking agent for cooperative use; therefore, the stability of the insulating material during large-length extrusion is improved. In addition, the cable insulation material is excellent in quality, has excellent thermal stability, scorching resistance, electrical insulation performance and aging resistance, and is of great significance in improving the market competitiveness of cable products.

The invention discloses a handle-locked two-core single-ended waterproof high-voltage connector, which is provided with a handle arranged outside a head shell assembly and used for connecting a plug and a socket, the socket comprises a socket shell, and a socket shielding cover, jacks, a socket outer sealing ring, a socket inner sealing ring, a signal pin assembly and the like which are arranged in the socket shell; through multi-stage waterproof, the socket can independently seal water vapor when the plug and the socket are not plugged in each other. According to the invention, the plug and the socket are plugged and fixed in a quick handle locking manner, so that the reliability of plugging and fixing of the plug and the socket is ensured; the connector socket has an independent waterproof function, and can protect a plate end from water vapor entering to cause damage to a device under a special working condition; a multi-lip sealing ring is adopted for waterproof sealing, and compared with a conventional O-shaped sealing ring for single-layer protection, the structure is more reliable, and good sealing performance and anti-aging performance are achieved; and through a shielding conduction structure, the whole connector has good electromagnetic shielding effectiveness and mechanical strength.

The invention discloses a p-phenylenediamine compound as well as a preparation method and application thereof, and the compound is obtained by carrying out hydrogenation reaction on 2, 4-diaminodiphenylamine and ketone in the presence of a catalyst. Compared with the current mainstream anti-aging agent 6PPD, the compound provided by the invention has good anti-dynamic / static ozone protection performance, good anti-dynamic fatigue performance and anti-emigration discoloration performance; the tire added with the compound provided by the invention does not generate toxic residues of p-benzoquinone structural substances in the use process, is more green and environment-friendly, is an ideal substitute of the anti-aging agent 6PPD, and has good economic and social benefits and wide market prospects.

The invention relates to the technical field of electronic packaging adhesives, in particular to a coating film for COB (Chip On Board) surface treatment and a preparation process of the coating film. According to the invention, titanium-containing polysiloxane is prepared, and titanium atoms are connected into the structure of polysiloxane, so that the high temperature resistance and mechanical properties of the COB packaging adhesive are improved, and the mechanical properties, high temperature resistance and aging resistance of a coating film are further improved; according to the present invention, the organosilicon elastomer microspheres and the oyster shell powder-polymethylhydrosiloxane graft are subjected to mutual crosslinking so as to obtain the organosilicon elastomer composite material, such that the thermal expansion coefficient and the mechanical property of the COB packaging adhesive can be adjusted by using the oyster shell powder component so as to further enhance the mechanical property and the high temperature resistance of the coating film, and reduce the warping rate of the coating film; and the curing forming speed of the covering film is increased, the curing time is shortened, and the production efficiency is improved.

The invention discloses a method for preparing a waterproof coiled material by using composite coal liquefaction residue asphalt. The method comprises the following steps: mixing matrix petroleum asphalt in a molten state with molten DCLR in a certain proportion to obtain DCLR modified asphalt; adding a certain amount of SBS into the DCLR modified asphalt, shearing for a period of time at a certain temperature, sequentially adding a certain amount of engine oil and rubber powder, continuously shearing for a period of time at a certain temperature, and finally developing for a period of time at a certain temperature to obtain the composite DCLR modified asphalt. Coating the composite DCLR modified asphalt on the upper and lower surfaces of a base to obtain a base body of the waterproof coiled material; the upper surface and the lower surface of the waterproof coiled material base body are coated with isolating membranes or covered with gravel and then cooled and formed. The problems that the added values of the coal liquefaction residues, the waste rubber powder and the waste engine oil are low, the compatibility of the coal liquefaction residues and the petroleum asphalt is poor, and the low-temperature performance and the anti-aging performance of the mixed asphalt are poor are solved.

The invention belongs to the technical field of court ground materials, and particularly relates to a ground material of a ground throw court and a preparation method thereof. The ground material of the ground throwing field comprises the anti-skid surface layer, the elastic buffer layer and the sound insulation layer from top to bottom, and has excellent sound insulation, impact resistance and wear resistance. The polyvinyl butyral bonded acrylic sound insulation felt and the jute fiber board are used as a sound insulation felt composite material to be laid on the surface of the base layer, so that the sound insulation effect of the ground of the ground throwing field is enhanced, boric acid and phenylboronic acid are compounded to react with siloxane, and reinforced gel prepared by adding a reinforcing material has excellent shear hardening and thermal stability, so that the sound insulation effect of the ground of the ground throwing field is improved. An elastic reinforcing material is prepared by compounding alkali-treated straw fibers and a reinforcing body prepared by compounding the alkali-treated straw fibers and a hydrophobically modified sponge framework, and has remarkable creep resistance and excellent impact hardenability, and the esterified straw fibers prepared by reacting the alkali-treated straw fibers with citric acid are used as a toughening agent to be added into wear-resistant elastic microspheres prepared by rubber, so that the wear-resistant performance of the wear-resistant elastic microspheres is greatly improved. The material has excellent wear resistance, light weight and aging resistance.

The invention relates to a migration-resistant anti-aging agent as well as a preparation method and application thereof, the method comprises the following steps: taking a substance as shown in a formula I and nitric acid as reactants, condensing H in an amino para-position group-CH-H and nitryl to obtain a nitrated substance, and carrying out hydrogenation reduction on the nitryl of the nitrated substance under the action of a catalyst to obtain an intermediate product. And carrying out hydrogenation on the intermediate product and ketone under the action of a catalyst to obtain a final product, namely the migration-resistant anti-aging agent II. The raw materials are convenient to purchase and transport, the product yield is high, the cost is low, the operation is simple, and the environmental pollution is small, so that the method has an industrial development prospect. # imgabs0 #

The invention provides an ocean engineering anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from the following raw materials: fluorocarbon resin, modified synthetic mica, modified basalt fibers, modified carbon nanotubes, nano silicon dioxide, nano zinc oxide, nano titanium dioxide, carbon fibers, zinc phosphate, hydroxyl-terminated polybutadiene, a plant extract, organic tin and the like. The modified synthetic mica and the modified carbon nanotubes are modified by adopting pentaerythritol stearate, cellulose nitrate and sodium hexametaphosphate; the modified basalt fiber is modified by adopting sodium stannate, polyvinyl alcohol and sodium hexametaphosphate; the plant extract is ethanol percolation extract of kandelia candel leaves and mangnolia officinalis leaves. All the components are used in a matched mode according to a certain proportion, and the advantages of being excellent in anti-corrosion performance, good in mechanical performance, excellent in anti-aging performance, environmentally friendly and the like are achieved.

The invention discloses a long-acting super-hydrophobic microcapsule as well as a preparation method and application thereof, and belongs to the technical field of super-hydrophobic materials. The long-acting super-hydrophobic microcapsule comprises a shell layer and a reactive core material wrapped in the shell layer, the outer surface of the shell layer is a rough surface formed by raised dispersed particles; the particle bulges are formed by stacking a plurality of nano-particles; the outer surface of the shell layer is covered with a cross-linked polymer network; the cross-linked polymer network is a SiO2 nano-particle network functionalized by polydimethylsiloxane; the material of the shell layer is preferably polyurea formaldehyde, and the material of the reactive core is preferably hexamethylene diisocyanate. The long-acting super-hydrophobic microcapsule provided by the invention shows excellent thermal stability, super-hydrophobicity, self-cleaning property and wear resistance, not only prolongs the service life of the microcapsule, but also ensures the stability and reliability of the microcapsule under complex environmental conditions, so that the long-acting super-hydrophobic microcapsule has great significance in solving the problem of microcapsule hydrophobic function failure caused by environmental factors.

The invention relates to the technical field of adhesives, and discloses a high-temperature-resistant epoxy AB adhesive and a preparation method thereof, and the high-temperature-resistant epoxy AB adhesive comprises a component A and a component B, wherein the component A comprises the following raw materials: bisphenol A epoxy resin, an ultraviolet light absorber, a defoaming agent, anti-aging graphene oxide and deionized water; and the component B comprises the following raw materials: anhydridized silicone oil and deionized water. The anti-aging graphene oxide and the anhydridized silicone oil are prepared to participate in the preparation process of the epoxy AB glue, so that the prepared epoxy AB glue has excellent mechanical properties, high temperature resistance and anti-aging performance, can stably play a bonding role in a long time in a high-temperature environment, and cannot be sticky to affect the use effect during use; moreover, aging and cracking are not prone to occurring, the use requirements of multiple fields can be met, and the long service life is achieved.

The invention provides nickel-carbon conductive shielding foam. The nickel-carbon conductive shielding foam sequentially comprises a conductive layer, foam, a bonding layer and an isolating layer from top to bottom, the foam comprises 25 to 40 parts of nickel-carbon nanotube-cerium oxide composite powder, 1 to 5 parts of an ionic liquid dispersant, 10 to 25 parts of organic silicone oil, 20 to 40 parts of silicone rubber, 5 to 10 parts of polyfuran, 5 to 10 parts of maleimide, 0.5 to 3 parts of a silane coupling agent, 0.01 to 0.1 part of a platinum catalyst and 0.2 to 1.5 parts of a cross-linking agent. The conductive foam can effectively restrain high-frequency electromagnetic interference generated in modern electronic equipment and ensure normal work of the equipment. A self-repairing system is constructed by adding polyfuran and maleimide. When the foam generates cracks under the action of mechanical stress or thermal cycle in the using process, the self-repairing material can automatically repair a conductive network through a reverse Diels-Alder reaction, and the shielding performance and the conductivity of the material are recovered.

The invention relates to the technical field of building materials, in particular to a phase change energy storage type cement-based composite material PCM-UHPC, which comprises an ultra-high performance cement-based material (UHPC) matrix and a microencapsulated phase change energy storage material (PCM microcapsule), a microcapsule wall material of the microencapsulated phase change energy storage material (PCM microcapsule) is compounded by a polymer and a nano inorganic material, and the polymer and the nano inorganic material are compounded to form the phase change energy storage type cement-based composite material PCM-UHPC. Wherein the ultra-high performance cement-based material (UHPC) matrix is composed of Portland cement, silica fume, fly ash, quartz powder, quartz sand and a water reducing agent. The material has the energy storage and heat preservation performance and the ultrahigh mechanical property, temperature regulation and energy balance can be achieved in the environment with large temperature difference changes, heating and refrigerating energy consumption of buildings is reduced, and the material has high thermal stability and long service life and is suitable for engineering structures such as building energy saving and temperature control bridges and tunnels.

The invention provides a preparation method of nickel-carbon conductive shielding foam, which comprises the following steps: S1, mixing carbon nanotubes and cerium oxide in proportion, and adding nano nickel powder to form a suspension; adding a reducing agent to carry out reduction reaction so as to deposit nickel ions on the surfaces of the carbon nanotubes and the cerium oxide particles; s2, mixing the nickel-carbon nanotube-cerium oxide composite powder with an ionic liquid dispersant, mixing organic silicone oil and silicone rubber to serve as a matrix, then adding polyfuran and maleimide, and adding a silane coupling agent to be fully combined; adding the dispersed composite powder into an organic silicon matrix, continuously stirring until the materials are uniformly mixed, then adding a platinum catalyst and a cross-linking agent, pouring the mixture into a mold, and curing to form foam; s3, pasting a conductive layer; S4, setting a bonding layer; and S5, setting an isolation layer. By adopting the nickel-carbon nanotube-cerium oxide composite material, the electromagnetic shielding performance of the foam is greatly improved. The ultra-thin self-repairing function is also realized.

The invention discloses a thin-wall sheath cable and a rapid forming process thereof, and the thin-wall sheath cable comprises a cable core, an insulating layer wrapping the cable core, and a sheath at the outermost layer. Wherein the cable core is formed by twisting a plurality of copper single wires; the insulating layer is made of a flame-retardant cross-linked polyethylene material; the sheath is made of a modified nylon material. Printing marks of the thin-wall sheath cable body are arranged on the insulating surface, the insulating layer and the sheath are extruded in a segmented mode, and the cable is formed at a time. The thin-wall sheath cable has the characteristics of flame retardance, environmental protection, wear resistance, small outer diameter, light weight, fast heat dissipation, large relative current-carrying capacity, easiness in pipe penetrating construction and the like.

The invention discloses a treatment method for ballast railway expansive rock-soil roadbed frost boiling and mud pumping. The treatment method comprises the steps that foundation bed soil texture expansion potentials are graded according to clay component and content test data; calculating the average annual precipitation; investigating subgrade frost boiling degree, and performing statistical analysis to determine the basic characteristics of frost boiling; determining the drainage blocking degree; investigating rail surface abrasion, direction and height change conditions of the steel rail and triangular pits, and determining the state of the steel rail; according to a calculation result, performing grade division on the frost boiling and mud rising diseases; and according to the grade of the mud pumping disease, determining a corresponding toughness rapid-rising strength anti-seepage waterproof protective layer and a specific treatment scheme. According to the construction method of the foundation bed surface layer toughness rapid strength anti-seepage protection layer, the overall strength of the foundation bed surface layer is improved, the hydraulic connection between atmospheric precipitation and hydrophilic minerals of a rock-soil body of the foundation bed surface layer is blocked, a toughness water-resisting layer with certain strength is rapidly formed, and the construction method is suitable for rapid construction of an existing running railway line; and the disease is radically treated from the source of frost boiling and mud rising of the roadbed.

The invention belongs to the technical field of rubber products, and provides silicone rubber for a composite insulator, a preparation method of the silicone rubber and the insulator, and the preparation method comprises the following steps: S1, mixing methyl vinyl phenyl silicone rubber and glycidyl methacrylate grafted silicone rubber in parts by weight, adding fumed silica and modified magnesium hydroxide, and uniformly stirring to obtain a silicone rubber mixture; continuously mixing, adding silicone oil, triethanolamine and a vulcanizing agent, stirring and mixing, and standing to obtain a mixed rubber material; s2, the mixed rubber material is put into an open mill to be mixed, a vulcanizing agent is added, thin passing and sheet discharging are conducted, standing is conducted, and rubber sheets are obtained; s3, putting the rubber sheet into a mold for molding, and then carrying out vulcanization reaction to obtain the silicone rubber material. The silicone rubber material provided by the invention has excellent mechanical property, flame retardant property, anti-aging property and electrical insulation property. Meanwhile, the preparation process is simple, raw materials are easy to obtain, cost is low, and wide application prospects are achieved.

The present application relates to a terpene resin with controllable molecular weight and a preparation method thereof. A preparation method of a terpene resin with controllable molecular weight comprises: mixing β-pinene with ethylene glycol to obtain a mixture; mixing toluene and a catalyst at ‑5 to 5°C until uniform; dropping the mixture and keeping it warm at 5‑10°C for 1‑3h; removing the catalyst; desolventizing toluene and discharging the material, wherein the mass ratio of toluene to β-pinene is (1‑1.15): 1, the amount of the catalyst is 3.5‑5% of the mass of β-pinene, and the amount of ethylene glycol is 0.04‑0.07% of the mass of β-pinene. The present application can achieve precise control of the molecular weight of the terpene resin, prepare a terpene resin product with stable performance, and meet the high standard requirements of sanitary tape for viscosity, anti-aging and aviation electronic tape to enable it to perform accurately and stably in avionic electronic instruments, and broaden its application range in high-end applications such as medical, food, and aviation.

The invention relates to terpene resin with controllable molecular weight and a preparation method thereof. The preparation method of the terpene resin with the controllable molecular weight comprises the following steps: mixing beta-pinene with ethylene glycol to obtain a mixture; uniformly mixing the toluene and the catalyst at-5 to 5 DEG C; dropwise adding the mixture, and keeping the temperature at 5-10 DEG C for 1-3 hours; removing the catalyst; the mass ratio of methylbenzene to beta-pinene is (1-1.15): 1, the use amount of the catalyst is 3.5-5% of the mass of beta-pinene, and the use amount of ethylene glycol is 0.04-0.07% of the mass of beta-pinene. According to the invention, accurate control of the molecular weight of the terpene resin can be realized, a terpene resin product with stable performance can be prepared, and high-standard requirements of a sanitary adhesive tape on viscosity and aging resistance and performance, such as accurate and stable performance operation of an aviation electronic adhesive tape in an aviation electronic instrument, can be met; and the application range in high-end application occasions such as medical treatment, food, aviation and the like is widened.

The utility model discloses an anti-aging cable which comprises a protective sleeve, a filling layer is arranged on the inner side of the protective sleeve, an ultraviolet-proof coating is coated on the outer surface of the protective sleeve, first conical grooves are evenly formed in the outer surface of the protective sleeve, supporting columns are arranged on the inner side of the filling layer, and the supporting columns are arranged on the inner side of the filling layer. Rubber strips are uniformly arranged on the outer surfaces of the supporting columns, trapezoidal rubber blocks are arranged at one ends of the rubber strips, cavities are formed in the inner sides of the rubber strips, second conical grooves are formed in the middles of the rubber strips, a shielding layer is arranged on the inner surface of the protective sleeve, and a waterproof layer is arranged on the inner surface of the shielding layer. Insulating sleeves are evenly arranged on the outer sides of the supporting columns, conductors are arranged on the inner sides of the insulating sleeves, hoses are evenly arranged between the conductors and the insulating sleeves, and flame-retardant layers are arranged on the inner surfaces of the insulating sleeves. According to the utility model, the strength of the cable is increased, and deformation and aging of the cable are reduced.

The utility model discloses a pre-embedded steel bar connecting sleeve and component, the connecting sleeve comprises a sleeve body, the sleeve body comprises a plurality of sections of cylindrical inverted cone-shaped circular truncated cones which are integrally formed, and a transition cone-shaped step of which the diameter is small at the upper part and large at the lower part is arranged at the connecting position of two adjacent cylindrical inverted cone-shaped circular truncated cones. The outer surface of the cylindrical inverted-cone-shaped circular truncated cone on the sleeve is in an inverted cone shape, compared with a sleeve with the circular surface, the contact area between the sleeve and concrete can be increased, the binding force and the bond stress between the sleeve and the concrete are improved, and the uplift resistance between the sleeve and the concrete can be improved through the transition cone-shaped step with the diameter being small in the upper portion and large in the lower portion. And the stability of the embedded sleeve embedded in the concrete is ensured.

The invention relates to the technical field of engineering plastic preparation, in particular to a wear-resistant engineering plastic master batch and a preparation method thereof.The preparation method comprises the following steps that S1, polyamide resin is subjected to degassing treatment in a vacuum environment; s2, performing surface pretreatment on nano aluminum oxide and a silane coupling agent; s3, mixing the polyamide resin, the polytetrafluoroethylene powder, the nano aluminum oxide, the modified polyethylene and the graphite micro powder to form a mixture A; s4, sequentially adding the epoxy resin, the antioxidant and the ultraviolet light absorber to form a mixture B; s5, carrying out composite extrusion to form a master batch matrix; and S6, carrying out cooling granulation treatment on the extruded master batch matrix, and carrying out antistatic coating treatment on the surface of the master batch to obtain a final wear-resistant engineering plastic master batch finished product. According to the invention, through uniform dispersion of multiple components and enhancement of binding force, high wear resistance, aging resistance and storage and transportation stability are realized, and the service life of the material in a severe environment is remarkably prolonged.

The utility model discloses an optical fiber woven luminous fabric for an automobile atmosphere lamp, and relates to the technical field of textiles. The warp-knitted weft-inserted fabric is formed by inserting weft yarns into warp-knitted fabric formed by warp yarns in the weft direction, the weft yarns comprise a plurality of optical fibers, the optical fibers form specific patterns on the warp-knitted weft-inserted fabric, at least one end of each optical fiber is connected with a light source controller after being bundled, and light emitted by an LED light source is guided in through the light source controller. The light is transmitted to the surface of the warp-knitted weft-insertion fabric through the optical fiber, so that the specific pattern emits light. The optical fibers are embedded into the fabric through a specific weaving process, so that uniform distribution of light rays and flexible design of patterns are realized, and the requirements of consumers on diversified and personalized atmosphere lamps are met; the optical fiber has excellent durability and anti-aging performance, the service life is long, the frequency of replacement and maintenance is reduced, and the use cost is reduced; the conduction efficiency of the optical fiber is high, heat is little during light emitting, and energy consumption and safety risks are reduced.

The invention relates to the technical field of recycling of asphalt pavement waste materials, in particular to an asphalt regenerant suitable for a hot-mixed recycled asphalt mixture and a preparation method of the asphalt regenerant. Wherein the mineral oil softens the aged asphalt, supplements lost light components in the aged asphalt and disperses other materials, and plays a continuous regeneration role in the regenerated asphalt mixture; the plasticizer improves the plasticity of the regenerated asphalt, so that the regenerated asphalt has better toughness, mechanical properties and impact resistance, and other materials are further dispersed under the synergistic effect of the plasticizer and the mineral oil; the anti-aging agent enhances the aging resistance and thermal stability of the recycled asphalt, and reduces the possibility of secondary aging of the recycled asphalt; the surfactant improves the interface state between the new asphalt and the old asphalt in the regenerated asphalt mixture, enhances the permeability of the regenerant and promotes mutual fusion of the new asphalt and the old asphalt; and the anti-stripping agent enhances the adhesion performance between the recycled asphalt and the aggregate, so that the recycled asphalt mixture has good thermal aging resistance and water damage resistance.

The invention discloses a functionalized boron nitride-cerium dioxide hybrid filler as well as a preparation method and application thereof, and belongs to the technical field of hybrid fillers. The boron nitride-cerium dioxide hybrid filler is constructed by a hydrothermal method, and is functionally modified by using N-(4-anilinophenyl) maleimide, so that the prepared filler has good mechanical reinforcing and anti-aging effects, is uniformly dispersed when being applied to a rubber matrix, can form a good heat-conducting passage and barrier effect, and has a good anti-aging effect. The thermo-oxidative aging of a rubber material can be relieved fundamentally, and the rubber composite material is endowed with good mechanical properties. Besides, small molecular N-(4-anilinophenyl) maleimide is combined with the hybrid filler, so that migration and emigration of N-(4-anilinophenyl) maleimide in a rubber matrix are avoided, physical loss of the anti-aging agent and pollution to the environment are reduced, and the N-(4-anilinophenyl) maleimide has high environmental friendliness and practicability, has an important application prospect in high-performance anti-aging rubber composite materials, and has wide application prospects. The method is especially suitable for light-color rubber products in various severe environments.

The invention provides a perovskite photovoltaic cell packaging adhesive film, and relates to the technical field of solar cell adhesives. The perovskite photovoltaic cell packaging adhesive film comprises the following raw material components: a silane coupling agent grafted polyolefin elastomer; the grafting rate of the silane coupling agent in the silane coupling agent grafted polyolefin elastomer is not lower than 3wt%, and the weight content of the free silane coupling agent in the silane coupling agent grafted polyolefin elastomer is not higher than 0.2 wt%. Preferably, the silane coupling agent grafted polyolefin elastomer is obtained by adopting a melt grafting method. The packaging adhesive film disclosed by the invention is high in bonding strength, good in ageing resistance and relatively good in skid resistance.

The utility model relates to the technical field of cables, and discloses an anti-aging cable which comprises a shell body, eight air bags are evenly and fixedly arranged on the inner side of the shell body, sliding blocks are fixedly arranged on the opposite sides of every two of the eight air bags, coils are fixedly arranged on the inner sides of the eight air bags, and four wires are arranged on the inner sides of the coils. The shell body comprises an inner protective layer, a waterproof layer is arranged at the lower end of the inner protective layer, a base layer is arranged at the lower end of the waterproof layer, and an outer protective layer is arranged at the lower end of the base layer. According to the anti-aging cable, the air bag in the middle of the anti-aging cable can increase resistance when the cable is extruded, the sliding blocks can maintain the air bag, protect the cable and reduce cable damage, the cable is provided with a plurality of protective layers, and the protective layer material has an anti-aging effect, can insulate heat, water and insulate, and can prolong the service life of the cable; the cable can be better protected, and resource waste is reduced.

The present invention belongs to the field of coatings, and specifically relates to a polysiloxane-based thermal insulation composition, coating and preparation method thereof suitable for metal substrates. The coating provided by the present invention is added with epoxy-modified polysiloxane resin, so that the prepared composition and the coating prepared by the composition have good thermal insulation performance, anti-aging performance, temperature resistance, solvent resistance and other properties. The composition provided by the present invention can be applied to the surface of metal materials, and can be used in aircraft and ship equipment, and has good application prospects.

The utility model relates to the technical field of operating levers, in particular to a deep protection operating lever. The dust-proof device comprises a mounting seat assembly, a swing rod assembly and a dust-proof cover mounted between the swing rod assembly and the mounting seat assembly, the mounting seat assembly comprises a fixed base for mounting the swing rod assembly and a base mounted at the bottom of the fixed base, and a circuit board is mounted at the bottom of the inner side of the base. The circuit board is fixed on the base, the upper surface of the circuit board and a mounting gap between the circuit board and the base are wrapped with a lower protective glue layer, the bottom of the fixed base is provided with an inwards-concave mounting glue injection groove with a downward groove opening, the Hall chip is fixed in a groove cavity of the mounting glue injection groove, and an upper protective glue layer is arranged at a gap between the Hall chip and the groove cavity of the mounting glue injection groove. The Hall chip is connected with the circuit board through a flexible printed circuit (FPC). According to the utility model, even if the dustproof cover is damaged, good waterproof and dustproof effects on the circuit board and the Hall chip can still be maintained.

The invention relates to a modified polytetrafluoroethylene sealing ring and a preparation process thereof, and belongs to the technical field of polytetrafluoroethylene sealing rings. The composite material is prepared from the following raw materials in parts by weight: 70-85 parts of polytetrafluoroethylene, 10-15 parts of pretreated glass fibers, 15-25 parts of rubber-plastic alloy rubber, 5-9 parts of polystyrene, 3-5 parts of modified graphite, 3-5 parts of a wear-resistant agent, 5-10 parts of a reinforcing agent and 3-5 parts of a silane coupling agent. According to the invention, polytetrafluoroethylene is used as a substrate material, rubber-plastic alloy rubber and polystyrene are added to improve the mechanical properties of the material, and the modified graphite subjected to anti-aging treatment and the glass fibers subjected to modification treatment are added and combined with other raw materials, so that the mechanical properties of the material are improved. The polytetrafluoroethylene sealing ring with excellent aging resistance and wear resistance is prepared by mixing, melting, cold press molding and roasting.