231 results about "ETFE" patented technology

The invention relates to the technical field of ETFE film testing, and discloses an ETFE film structure life prediction method and system based on machine learning, and the method comprises the steps: carrying out the standardization preprocessing of the cyclic load fatigue data of an ETFE film structure in a biaxial stress state, and obtaining a standard feature vector; performing membrane structure geometric weight distribution on the standard feature vector to obtain a weighted feature vector; performing multi-time scale damage feature extraction based on the weighted feature vector to obtain a fused damage feature; inputting the fused damage features into a fatigue damage evolution physical constraint embedder for constraint calculation to obtain physical constraint damage features; bayesian probability life prediction is carried out on the physical constraint damage features, and a fatigue life prediction value of the ETFE film structure is obtained.According to the method, key damage parameters of different deformation stages can be recognized in a self-adaptive mode, the characterization precision of the fatigue behavior of the film structure is remarkably improved, and the life prediction accuracy of the ETFE film structure is improved.

The invention relates to the technical field of metal wires, in particular to a low-voltage aluminum wire and a preparation method thereof, the sectional area of the wire is 35 square millimeters, the wire comprises an aluminum alloy conductor and an insulating layer, the aluminum alloy conductor comprises the following chemical components: 0.7-0.9% of magnesium, 0.4-0.6% of silicon, 0.15-0.25% of copper, 0.08-0.12% of zirconium, 0.05-0.09% of scandium, 0.03-0.07% of silver, 0.01-0.03% of erbium, 0.02-0.04% of vanadium and the balance of aluminum, and the microstructure of the aluminum alloy conductor is in gradient distribution. The center is ultra-fine grains, a transition region contains a nano precipitated phase, the surface layer is of a high-density dislocation and nano precipitated phase synergistic reinforcement structure, the insulating layer is of a double-layer composite structure, the inner layer is a crosslinked polyethylene modified layer, the outer layer is an ethylene-tetrafluoroethylene copolymer modified layer, the electric conductivity is improved to 58% IACS or above, and the tensile strength is improved to 280 MPa or above.

The invention relates to the technical field of cables, and provides a flexible corrosion-resistant robot cable, which sequentially comprises a cable core, a shielding layer, an inner sheath layer and an outer sheath layer from inside to outside, and is characterized in that the cable core sequentially comprises a conductor and an insulating layer from inside to outside; the outer sheath layer comprises the following raw material components in parts by weight: 60-70 parts of high-density polyethylene, 15-25 parts of an ethylene-tetrafluoroethylene copolymer, 0.5-1.5 parts of an antioxidant, 1-3 parts of a plasticizer, 8-12 parts of a flame retardant, 10-20 parts of polyethylene glycol diacrylate composite barium sulfate and 1-2 parts of a lubricant; the polyethylene glycol diacrylate composite barium sulfate is prepared from the following raw materials: polyethylene glycol diacrylate, barium chloride and sodium sulfate. According to the technical scheme, the problem of poor corrosion resistance of the robot cable in the prior art is solved.

The invention discloses a high-temperature-resistant ethylene-tetrafluoroethylene copolymer as well as a preparation method and application thereof. The copolymer comprises the following raw materials: 10-30 parts of ethylene; 60 to 80 parts of tetrafluoroethylene; and 6 to 30 parts of 4-(trifluoromethyl) styrene. The preparation method comprises the following steps: adding a perfluorocarbon solvent and 4-(trifluoromethyl) styrene into a reaction kettle, stirring, and keeping the temperature at 30-50 DEG C; and adding a mixed gas of ethylene and tetrafluoroethylene and a perfluorobutyryl peroxide compound in a molar ratio of 1: 1 into the system to initiate a polymerization reaction under the reaction pressure of 1-4MPa for 15-30 minutes. The application comprises the following steps: adding the prepared high-temperature-resistant ethylene-tetrafluoroethylene copolymer into an extruder; extruding at the temperature of 260-300 DEG C to coat the outer surface of the electric wire or the cable; and carrying out annealing treatment on the wire or the cable coated with the high-temperature-resistant ethylene-tetrafluoroethylene copolymer at the annealing temperature of 120-180 DEG C for 12-24 hours. The preparation method of the high-temperature-resistant ethylene-tetrafluoroethylene copolymer is simple, low in cost and convenient for large-scale production and application.

The invention provides a preparation method of an ETFE fluorofilm plate with excellent comprehensive performance, and belongs to the technical field of manufacturing of high-performance building materials. According to the preparation method, a metal plate plated with an aluminum-zinc alloy film layer serves as a substrate, and the upper surface and the lower surface of the substrate are each provided with a composite plating layer. The composite coating comprises a silicon dioxide-carbon tube coating, an indium tin oxide coating, a wear-resistant layer, an ETFE fluorine film layer and a wear-resistant hydrophobic layer. The ETFE fluorine diaphragm plate prepared by the method not only has excellent corrosion resistance and excellent heat insulation performance, but also has good scratch-resistant protection and weather resistance, and particularly, the coated wear-resistant hydrophobic layer effectively reduces the adhesion of moisture on the surface of the diaphragm plate, improves the self-cleaning performance of the diaphragm plate, reduces the maintenance cost, and is suitable for large-scale popularization and application. The introduction of the layer not only protects the surface of the film, but also enhances the stability of the film in the long-term use process. The ETFE fluorine film plate prepared by the method is suitable for various high-performance building requirements, and shows a wide application prospect.

The invention belongs to the technical field of ETFE film preparation, and particularly relates to a preparation method of a high-strength ETFE film. The preparation method of the ETFE film comprises the following steps: preparing a mixture of modified nano cellulose and calcium magnesium silicate whiskers; carrying out modification treatment on the poly (p-benzamide) fiber; and preparing the ETFE film. According to the preparation method of the high-strength ETFE film, the perfluoroalkoxy copolymer and the ETFE resin are selected and mixed for use, during melt extrusion, the perfluoroalkoxy copolymer can lubricate the ETFE and reduce the overall melt viscosity, the critical shear rate of the perfluoroalkoxy copolymer is higher than that of the ETFE, melt fracture can be inhibited, the film is evenly extruded, the flatness of the film surface is improved, and the high-strength ETFE film is prepared. And meanwhile, the elastic retraction of the ETFE is inhibited during high-temperature setting. And the modified nano cellulose and calcium magnesium silicate whisker mixture and the modified poly-p-benzamide fiber are added to enhance the mechanical strength of the prepared ETFE film.

The application discloses a cross-linked ETFE composite film with gradient ultraviolet shielding function and a preparation method and application thereof, and belongs to the technical field of ETFE film preparation. The cross-linked ETFE composite film is composed of three layers of a surface layer, a middle layer and a bottom layer. The surface layer material comprises ETFE resin and fluorinated carbon quantum dots; the middle layer material comprises ETFE resin, allyl-containing comonomer A and phenyl-containing comonomer B; and the bottom layer material comprises ETFE resin and CeO2 nanowires. The fluorinated carbon quantum dots have a particle size of 3-5 nm and contain a -C4F9 structure. The comonomer A is an allyl-containing fluorine olefin monomer, and the comonomer B is a phenyl-containing organic fluorinated compound. Through the synergistic effect of the surface layer self-migration fluorinated carbon quantum dots, the middle layer copolymerization modification and the bottom layer CeO2 nanowires, high light transmittance, full-waveband ultraviolet shielding and long-term weather resistance are achieved.

The invention relates to the field of cables, and discloses a fire-resistant light cable for a safety harbor-returning system for a ship and a processing method thereof.The cable comprises a guide core, a fire-resistant layer, an insulating layer, a cabling layer, an inner sheath layer, an armor layer and an outer sheath layer which are sequentially arranged from inside to outside, and the inner sheath layer and the outer sheath layer are prepared by extruding sheath layer materials; the sheath layer is made of low-density polyethylene, nitrile rubber, ethylene-tetrafluoroethylene copolymer, functional additives, composite filler and auxiliaries; the functional additive is prepared by the following steps: reacting 3, 5-di-tert-butyl-4-hydroxybenzoyl chloride with 2-chloro-4, 6-diamino-1, 3, 5-triazine to obtain a modified hindered phenol component, and then reacting 1, 4-p-xylylene dichloride with 10-(2, 5-dihydroxyphenyl)-10H-9-oxa-10-phosphaphenanthrene-10-oxide to obtain a product, and continuously reacting the product with the modified hindered phenol component; the composite filler is prepared by modifying vermiculite with titanium dioxide and zinc oxide pillared. The cable prepared by the invention has excellent mechanical properties, flame retardance and aging resistance.

The invention relates to the field of fireproof cables, and discloses a composite mica copper sheathed high-performance fireproof cable for high-speed railways. The composite mica copper sheathed high-performance fireproof cable comprises a plurality of insulating cores, an inorganic tape, a copper sheath, and a sheath layer which are sequentially arranged from the inside to the outside, wherein the insulating core comprises a copper conductor and a mica tape insulation layer wrapped around the surface of the copper conductor, and a mineral material is filled between the mica tape insulation layer and the inorganic tape; the sheath layer is prepared by pulling out a sheath layer material from the outer periphery of the copper sheath through an extrusion device; the sheath layer material comprises the following raw materials in parts by weight: 70 to 90 parts of low-density polyethylene, 10 to 15 parts of ethylene-tetrafluoroethylene copolymer, 5 to 10 parts of modified composite fillers, 2 to 5 parts of flame retardant additives, 3 to 4 parts of diisopropylbenzene peroxide, 2 to 2.5 parts of triallyl isocyanurate, 1 to 2 parts of a plasticizer, and 0.1 to 0.3 parts of a lubricant. The invention imparts excellent heat-oxidation aging resistance, flame retardancy, and heat resistance to the cable sheath layer material through the addition of the modified composite filler and the flame retardant additive.

The invention relates to the technical field of electric wires and cables, and discloses a fluoroplastic insulating high-temperature-resistant fireproof cable and a preparation method thereof.The cable comprises a conductor layer, the conductor layer is formed by twisting multiple strands of copper wires, the periphery of the conductor layer is coated with a fluoroplastic insulating layer, the periphery of the fluoroplastic insulating layer is coated with a shielding layer, and the shielding layer is arranged on the periphery of the conductor layer. The shielding layer is of a copper strip braided structure, the periphery of the shielding layer is coated with an armor layer, the armor layer is braided by stainless steel wires, the periphery of the armor layer is coated with a sheath layer, and the sheath layer comprises the following components in parts by mass: 50-70 parts of functionalized ethylene-tetrafluoroethylene copolymer. According to the invention, an interpenetrating polymer network formed by in-situ crosslinking of the functionalized fluoropolymer and the organosilicon elastomer is constructed in the sheath layer, and an energy field gradient response vulcanization process is adopted, so that the prepared cable sheath maintains the inherent high temperature resistance of fluoroplastic, and the flexibility and mechanical strength of the material are improved at the same time.

The invention relates to the technical field of cables, and provides a fluoroplastic cable which sequentially comprises a cable core, an insulating layer and a protective layer from inside to outside, and the protective layer comprises the following raw materials in parts by weight: 100 parts of polytetrafluoroethylene, 15-20 parts of an ethylene-tetrafluoroethylene copolymer, 8-12 parts of a compatilizer, 15-20 parts of a wear-resistant filler, 1-3 parts of a lubricant, 1-4 parts of a dispersant and 2-3 parts of an antioxidant; the compatilizer is prepared from a styrene-maleic anhydride copolymer and an epoxy group-containing compound. According to the technical scheme, the problems of poor mechanical strength and wear resistance of the fluoroplastic cable in the prior art are solved.

The invention relates to the technical field of high polymer materials, in particular to a corrosion-resistant, aging-resistant and flame-retardant ETFE film and a preparation process thereof. The preparation process comprises the following steps: preparing the ETFE polymer; preparing modified polytetrafluoroethylene microsphere powder; preparing a dopamine modified polytetrafluoroethylene emulsion; and preparing the corrosion-resistant, aging-resistant and flame-retardant ETFE film. According to the preparation method disclosed by the invention, the polytetrafluoroethylene is modified by utilizing dopamine, after the emulsion is prepared, the surface of the ETFE film is covered with a layer of coating, the dopamine can spontaneously polymerize into polydopamine in a natural environment, the polydopamine has relatively good adhesion and can be firmly combined with the ETFE film, and the polytetrafluoroethylene and the ETFE film have similar structures and chemical characteristics, so that the preparation method has the advantages that the preparation method is simple, the cost is low, and the application prospect is wide. The ETFE film does not fall off after being tightly bonded for a long time, but the two films are gradually fused, so that the aging resistance of the ETFE film is improved.

The invention relates to a photoelectric composite cable suitable for an unmanned aerial vehicle platform, which comprises a wrapping layer formed by wrapping a covering film, an accommodating space is formed in the wrapping layer, a two-core electric unit and a one-core single-mode optical fiber are respectively placed in the accommodating space, and a plurality of aramid fibers are distributed in the accommodating space and are filled to form a cable; an insulating layer is distributed on the electric unit, an outer wrapping layer is distributed on the single-mode optical fiber, and the insulating layer, the outer wrapping layer and the covering film are all made of high-temperature-resistant fluoroplastic formed by ethylene-tetrafluoroethylene copolymer; the thickness of the covering film is 0.05 mm, and the total thickness after wrapping is 0.10 mm + / -0.02 mm; the outer diameter of the photoelectric composite cable is 2.2 mm + / -0.1 mm, and the total weight per meter is smaller than or equal to 12 g. Therefore, the whole photoelectric composite cable has better high temperature resistance, can meet high tensile strength under the condition of light weight, can realize low-loss signal transmission, and has better heat dissipation effect.

The invention relates to the technical field of cables, and provides a high-temperature-resistant cable for aerospace and a preparation method and application thereof, and the high-temperature-resistant cable for aerospace sequentially comprises a conductor, an insulating layer and a sheath layer from inside to outside; the insulating layer is prepared from the following components in parts by weight: 100 to 120 parts of polytetrafluoroethylene, 10 to 20 parts of high-density polyethylene, 25 to 35 parts of ethylene-tetrafluoroethylene copolymer, 15 to 30 parts of ethylene-trifluorochlor oethylene copolymer, 5 to 10 parts of cyanate ester resin modified inorganic filler, 3 to 5 parts of sensitizer, 1 to 3 parts of antioxidant and 0.5 to 1 part of lubricant. According to the technical scheme, the problem of poor high temperature resistance of the insulating layer of the cable in the prior art is solved.

The invention discloses an ETFE air pillow film mounting structure. The ETFE air pillow film mounting structure comprises a cylindrical tubular main structure; the cross-shaped rib plates are evenly arranged on the upper end face of the tubular main structure in the longitudinal direction, each cross-shaped rib plate comprises a web which is vertically arranged and fixedly connected with the upper end face of the tubular main structure and a panel which is horizontally arranged on the upper end face of the web, and a circular through hole is formed in the middle of the web; the inflation pipeline comprises a longitudinal pipeline arranged in the longitudinal direction and arc-shaped pipelines symmetrically arranged at the two ends of the longitudinal pipeline, and the longitudinal pipeline perpendicularly penetrates through the middle circular through hole of the web; the aluminum alloy profile is in a long strip shape, and the ETFE air pillow film penetrates through a gap of the aluminum alloy profile and is fixed in the gap; the anti-bird frames are uniformly arranged on the aluminum cover plate at the upper part of the aluminum alloy profile along the longitudinal direction; the invention further discloses a corresponding construction method. And good structural stability, safety, reliability and durability are achieved.

The invention discloses a cross-linked ETFE composite film with a gradient ultraviolet shielding function and a preparation method and application thereof, and belongs to the technical field of ETFE film preparation, the cross-linked ETFE composite film is composed of a surface layer, a middle layer and a bottom layer; the surface layer material comprises ETFE resin and carbon fluoride quantum dots; the material of the middle layer comprises ETFE resin, an allyl-containing comonomer A and a phenyl-containing comonomer B; the bottom layer material comprises ETFE resin and a CeO2 nanowire; the particle size of the carbon fluoride quantum dot is 3-5nm, and the carbon fluoride quantum dot comprises a-C4F9 structure; the comonomer A is a fluoroolefin monomer containing allyl; the comonomer B is organic fluoride containing phenyl. Through the synergistic effect of the self-migration carbon fluoride quantum dots on the surface layer, copolymerization modification on the middle layer and the CeO2 nanowires on the bottom layer, high light transmittance, full-band ultraviolet shielding and long-term weather resistance are achieved.

The invention belongs to an insulating material, relates to a polypropylene-based insulating material, and in particular relates to a high-temperature-resistant intrinsic self-recovery polypropylene insulating material as well as a preparation method and application thereof. The material is formed by blending a polypropylene grafting material and an ethylene-tetrafluoroethylene copolymer grafting material according to a mass ratio of 6.0: 4.0-9.5: 0.5, wherein the PP graft material comprises a PP graft polymer and an antioxidant, and the PP graft polymer is a graft polymer formed by grafting 4-propenyloxy-2-hydroxybenzophenone to polypropylene; the ETFE graft material comprises an ETFE graft polymer and an antioxidant, and the ETFE graft polymer is a graft polymer of glycerol grafted ethylene-tetrafluoroethylene copolymer. On the basis of keeping the original excellent performance of polypropylene, the polypropylene has higher heat resistance and self-recovery capability through a grafting modification technical means.

The invention discloses a release film for semiconductor packaging based on PET and ETFE compounding and a preparation method of the release film, and belongs to the technical field of film materials, the release film structurally comprises a PET base material layer, an adhesive layer and an ETFE layer which are sequentially arranged, and the adhesive layer is prepared from the following raw materials in parts by mass: 40-60 parts of fluorine-containing acrylate compound; 20 to 30 parts of epoxy modified organic silicon resin; 5 to 10 parts of nano silicon dioxide; 1 to 2 parts of a photoinitiator; wherein the surface of the contact side of the PET base material layer and the adhesive layer is subjected to plasma treatment or corona treatment, and the dyne value is larger than or equal to 50 mN / m; the surface of the side, making contact with the adhesive layer, of the ETFE layer is subjected to fluoridation treatment, and the surface roughness Ra is smaller than or equal to 1 micrometer. The release film has the advantages of controllable release force in a range of 0.1-5N / 25mm, good stability, temperature resistance of 175 DEG C, good organic solvent resistance, and wide application prospect in the field of semiconductor packaging.

The invention provides an ultraviolet-resistant ETFE film for a photovoltaic module and a preparation method thereof, and the ETFE film comprises the following components based on the total weight of 100 parts: an ethylene-tetrafluoroethylene copolymer used as a base material; 0.5 to 1.5 parts by weight of a stabilizing auxiliary agent; the weight part of the antioxidant is 0.5 to 1.5 parts; and 0.4 to 1.6 parts by weight of an anti-ultraviolet agent. The weather resistance, the ultraviolet aging resistance and the light transmittance of the ultraviolet-resistant ETFE film for the photovoltaic module are remarkably improved by selecting an ethylene-tetrafluoroethylene copolymer (ETFE) as a base material, and meanwhile, the weather resistance, the ultraviolet aging resistance and the light transmittance of the ultraviolet-resistant ETFE film for the photovoltaic module are remarkably improved by adding a series of efficient anti-aging and anti-ultraviolet agents such as 2, 2 '-methylenebis6-(2H-benzotriazole-2-yl)-4-(1, 1, 3, 3-tetramethylbutyl) phenol and C27H27N302. Therefore, the ultraviolet blocking rate of the film is obviously improved, and the service life of a photovoltaic module is effectively prolonged.

The invention particularly relates to a chlorinated polyvinyl chloride composite material for an automobile lampshade and a preparation method thereof. The chlorinated polyvinyl chloride composite material is prepared from the following raw materials in parts by weight: 70 to 80 parts of chlorinated polyvinyl chloride, 10 to 15 parts of maleic anhydride grafted chlorinated polyvinyl chloride, 8 to 14 parts of modified filler, 4 to 8 parts of compatilizer, 4 to 8 parts of heat stabilizer, 4 to 9 parts of ethylene-tetrafluoroethylene copolymer, 2 to 5 parts of lubricant and 2 to 5 parts of amino propyl heptyl-polyhedral oligomeric silsesquioxane. And 2-6 parts of a processing aid. According to the chlorinated polyvinyl chloride composite material for the automobile lampshade, chlorinated polyvinyl chloride is taken as a main raw material, and maleic anhydride grafted chlorinated polyvinyl chloride, a modified filling agent, amino propyl heptyl-polyhedral oligomeric silsesquioxane and an ethylene-tetrafluoroethylene copolymer are introduced, so that the prepared composite material has good mechanical properties, corrosion resistance and high temperature resistance; and the preparation method is convenient to operate and control and high in production efficiency.

The invention relates to the technical field of coating preparation, and provides a super-hydrophobic oleophobic epoxy anticorrosive wear-resistant powder coating and a preparation method thereof. According to the coating, phenolic epoxy resin and bisphenol A epoxy resin are used as matrix resin, phenolic hydroxyl resin is used as a curing agent, super-hydrophobic / oleophobic carbon nanotubes are used as a modifier, ethylene-tetrafluoroethylene copolymer and polyamide resin are used as flexibilizers, super-hydrophobic / oleophobic nano silicon dioxide powder and super-hydrophobic hollow glass beads are used as fillers, and the super-hydrophobic / oleophobic nano silicon dioxide powder and the super-hydrophobic hollow glass beads are used as fillers. The super-hydrophobic and oleophobic epoxy anti-corrosion wear-resistant powder coating is prepared by taking an inorganic pigment as a coloring agent through the steps of material preparation, premixing, melt extrusion, tabletting, cooling, crushing and sieving under the cooperation of various functional assistants. The powder coating is subjected to electrostatic spraying (40-70 KV), the coating film thickness is about 350 microns, and the powder coating is cured into a film after being subjected to hydrophobic / oleophobic min at 180 DEG C / 5 min or 230 DEG C / 1.5 under the baking condition of 180 DEG C / 5 min. The contact angles of oil drops and water drops can reach 160 degrees and 161 degrees respectively, and the rolling angles are 2 degrees and 1 degree respectively.

To provide a resin molded article having superior durability in low-friction properties in a surface treatment layer containing fluorine atoms.SOLUTION: A resin molded article according to one embodiment of the present disclosure includes a base body composed of a crosslinked body of a resin composition. At least a part of a surface of the base body is a surface treatment layer. A main component in the resin composition is an ethylene-tetrafluoroethylene copolymer, polyvinylidene fluoride, polyethylene, or polypropylene. The ratio of the number of fluorine atoms to the number of carbon atoms in the surface treatment layer is greater than the ratio of the number of fluorine atoms to the number of carbon atoms in a region of the base body that excludes the surface treatment layer. The average thickness of the surface treatment layer is 500 nm or more and 2000 nm or less.SELECTED DRAWING: Figure 1

The invention discloses a composite material for a cable shielding layer film and a preparation method of the composite material. A resin matrix of the composite material comprises 30-60 parts by mass of metallocene linear low density polyethylene, 3-10 parts by mass of an ethylene-octylene copolymer, 3-20 parts by mass of polytrifluorochloroethylene, 3-10 parts by mass of an ethylene trifluorochloroethylene copolymer and 15-40 parts by mass of an ethylene tetrafluoroethylene copolymer, and the total parts by mass of the resin matrix is 100. The tensile strength of the composite material for the cable shielding layer film is larger than 40 MPA, and the composite material is not prone to stripping from a metal belt; the yield strength is greater than 10MPA, and the steel is not easy to be stretched and deformed in the compounding process of the steel and a metal belt; the water vapor transmission rate is smaller than 6, the water vapor barrier effect is good, hydrolysis is not prone to occurring, aging resistance is good, the metal belt can be well protected within the quality guarantee period, and in addition, the flame retardant property is excellent.

The utility model relates to the technical field of ecological management, and specifically to an air film ecological management structure, comprising: a flexible support, comprising a plurality of columns arranged at intervals in sequence, and two layers of rope assemblies arranged at intervals in the vertical direction on the columns, each layer of the rope assemblies comprising a plurality of ropes arranged side by side; a greenhouse film comprising a top film and a side film, the side film being arranged around the sides of the columns, the top film and the side film enclosing together to form a closed greenhouse space; the top film comprising an upper film and a lower film, the upper film being fixed on the rope assembly of the upper layer, and the lower film being fixed on the rope assembly of the lower layer, so that a hollow interlayer is formed between the upper film and the lower film; the upper film, the lower film and the side film are ETFE air films; this solution can adapt to complex terrains and has good thermal insulation performance; the light transmittance of the ETFE air film can reach more than 90%, does not block the transmission of ultraviolet rays and other light, can ensure sufficient daytime radiation in high-cold areas, and is beneficial to plant photosynthesis.

According to the ethylene-tetrafluoroethylene copolymer and the preparation method provided by the invention, cyclohexyl vinyl ether is adopted as a third monomer during preparation of the copolymer, and a rigid structure and thermal stability of a molecular six-membered ring of the cyclohexyl vinyl ether are utilized, so that the movement trend of a polymer molecular chain can be reduced, and the strength of ETFE can be improved; and moreover, the strength and heat resistance of the ETFE can be greatly improved, and the application range of the ETFE is expanded. The tensile strength of the ETFE is 60-70 MPa, the 1wt% thermal weight loss temperature is 430 DEG C or above, and the ETFE has excellent mechanical properties and heat resistance. The preparation method provided by the invention is simple, is simple and convenient to operate, is convenient for large-scale production, can be used for preparing cables, films and the like, and improves the application performance of ETFE.

The invention relates to the technical field of cables, and provides a corrosion-resistant aerial insulated cable and a manufacturing method thereof. A corrosion-resistant overhead insulated cable sequentially comprises a conductor, a shielding layer and an insulating layer from inside to outside, and the insulating layer is prepared from the following raw materials in parts by weight: 65-75 parts of high-density polyethylene, 5-7 parts of modified kaolin, 13-17 parts of ethylene-tetrafluoroethylene copolymer, 0.5-2 parts of antioxidant, 1-3 parts of plasticizer, 8-10 parts of flame retardant and 0.5-1.5 parts of lubricant; wherein the modified kaolin is prepared by the following steps: firstly, modifying kaolin by vinyltriethoxysilane for the first time to obtain silanized kaolin, and then modifying the silanized kaolin by lauryl amine dipropylidene diamine and gamma-glycidyl ether oxyethyl trimethoxysilane for the second time. According to the technical scheme, the problem of poor corrosion resistance of the overhead insulated cable in the prior art is solved.

The invention relates to the technical field of packaging adhesive films, in particular to a packaging adhesive film for a light flexible assembly. The packaging adhesive film comprises a polyester bonding layer, a silane crosslinking metallocene polyolefin layer and a high-viscosity barrier layer, and the polyester bonding layer is connected with the high-viscosity barrier layer through the silane crosslinking metallocene polyolefin layer. The adhesive tape has the bonding performance of silane modified polyurethane resin and ETFE, has the insulativity and water resistance of the metallocene intermediate layer, and also has the ion adsorption barrier ability and bonding ability of the third layer after modification of ethylene-epoxy acrylic acid-vinyl alcohol resin.

This application relates to the field of insulating materials, specifically disclosing a flexural insulating material, its preparation method, and a robot cable, comprising the following raw materials in parts by weight: 50-80 parts of low-density polyethylene, 30-40 parts of medium-density polyethylene, 30-40 parts of ethylene-tetrafluoroethylene-perfluoropropyl vinyl ether terpolymer, 1-20 parts of filler, 3-8 parts of compatibilizer, 0.1-5 parts of crosslinking agent, and 0.1-5 parts of co-crosslinking agent. This invention addresses the performance shortcomings of existing insulating materials, achieving a balance of flexural resistance, abrasion resistance, insulation stability, and excellent flexibility, thus meeting the stringent requirements of high-frequency cables used in robots / manipulators.

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 invention discloses a modified sulphoaluminate cement protective material containing rare earth and a preparation method thereof, which belongs to the field of cement-based protective materials, and comprises the following components in parts by weight: 60 parts of composite sulphoaluminate cement, 25-26 parts of admixture, 2-3 parts of cement active modifier, 2-3 parts of auxiliary agent, and a water-solid ratio of 0.4; the cement active modifier comprises component A and component B; component A is an active agent for surface inert modification through a passivation layer, wherein the passivation layer comprises ethylene-tetrafluoroethylene copolymer, silk protein modified fiber, silane coupling agent, and soybean protein adhesive grafted and modified by glycidyl methacrylate; component B is a decomposition liquid of the passivation layer in component A, and the component B comprises papain and neutral protease. The invention utilizes enzymatic hydrolysis technology to avoid the situation that a large cohesive force is generated inside the cement slurry during the activation of cement, thereby causing the strength of the protective material to be reduced.