353 results about "Polyether ether ketone" patented technology

The invention discloses a whisker carbon nanotube doped sulfonated polyetheretherketone water lubricated bearing material and a preparation method, and belongs to the technical field of high polymer materials, and the preparation method comprises the steps of dispersion of whisker carbon nanotubes, doping of the whisker carbon nanotubes, carbon fibers and graphite, cold press molding, sintering and the like. Hydrophilic sulfonic acid groups and whisker carbon nanotubes with branched structures are introduced into the sulfonated polyether-ether-ketone material, so that the sulfonated polyether-ether-ketone material effectively adsorbs hydrated cations in seawater, a hydrated lubricating layer is formed on the surface of the material, and interfaces of graphite, carbon fibers and polymers doped in the material are bridged and toughened. Besides, the whisker carbon nanotubes are dispersed by means of an alkylbenzene sulfonate dispersant, so that sulfonic acid groups can interact with the whisker carbon nanotube surface dispersant, the binding property of the polyether-ether-ketone material and the whisker carbon nanotubes is enhanced, and the surface strength of the material can be improved. Therefore, the problems that an existing polyether-ether-ketone composite material is poor in bearing capacity and serious in abrasion at a low rotating speed are solved.

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention discloses a high-performance polyether-ether-ketone plate and a preparation method thereof, and belongs to the technical field of semiconductor manufacturing. The high-performance polyether-ether-ketone plate comprises the following components in parts by weight: 80-90 parts of polyether-ether-ketone, 1-3 parts of carbon nanotubes, 1-3 parts of graphene nanosheets, 2-5 parts of conductive tin oxide micro powder, 3-5 parts of polytetrafluoroethylene micro powder and 0.5-1 part of a silane coupling agent. The PEEK composite material provided by the invention has excellent mechanical, conductive, heat management, corrosion resistance and antistatic properties, and is suitable for severe environments such as high temperature, corrosion and fatigue resistance.

The invention discloses a preparation process of a high-temperature-resistant and wear-resistant polymer composite material, which comprises the following preparation steps: (1) selecting polyether-ether-ketone as matrix resin, and drying the matrix resin at 150 DEG C for 4 hours; (2) preparing porous sphere-like boron carbide ceramic powder; (3) carrying out surface treatment on the prepared porous sphere-like boron carbide ceramic powder; and (4) uniformly mixing the boron carbide ceramic powder subjected to surface treatment in the step (3) and polyether-ether-ketone in a mild mixing manner, compounding with carbon fibers, and extruding and granulating by using a double-screw extruder to obtain the high-temperature-resistant and wear-resistant polymer composite material. Through the mode, the composite material prepared by the method does not contain PFAS chemical substances, is superior to the existing PTFE material in the aspects of wear resistance, environmental protection property, high temperature resistance and the like, and is an ideal reliable PTFE substitute material.

The invention relates to the technical field of copper-clad plates, and particularly discloses a high-speed copper-clad plate prepared from functional plastics, and the high-speed copper-clad plate is formed by hot-pressing and curing a plurality of functional plastic modified epoxy group prepregs; the functional plastic modified epoxy group prepreg is prepared from electronic-grade glass cloth and functional plastic modified epoxy resin; the functional plastic modified epoxy resin comprises 5-20 parts by weight of functional plastic, 100 parts by mass of epoxy resin, 8-25 parts by mass of a curing agent composition, 5-25 parts by mass of a functional filler composition, 60-150 parts by mass of an organic solvent and 1-5 parts by mass of a functional auxiliary agent. The functional plastic is PEEK (Polyether Ether Ketone) micro powder; the ratio of the total mass of the functional plastic and the functional filler composition to the mass of the epoxy resin is (15-25): 100. The high-speed copper-clad plate disclosed by the invention is low in dielectric loss and excellent in heat resistance, and meets the dielectric property requirement of a 5G high-frequency PCB (Printed Circuit Board) substrate.

The invention discloses a wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part for LPBF and a forming method of the wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part, and belongs to the technical field of additive manufacturing. The forming method comprises the steps that polyether-ether-ketone powder and molybdenum disulfide powder are pretreated according to different modes; after pretreatment, the two kinds of powder are mechanically mixed according to a specific proportion, and wide-temperature-range polyether-ether-ketone-based self-lubricating composite material powder is obtained; and carrying out printing forming on the polyether-ether-ketone-based self-lubricating composite material powder by adopting a laser powder bed melting (LPBF) specific process to obtain a wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part. Molybdenum disulfide is adopted to enhance the friction and wear performance of polyether-ether-ketone in a wide temperature range, the printability of powder is improved through special pretreatment, and a high-performance wide-temperature-range polyether-ether-ketone-based self-lubricating composite material part suitable for high and low temperature extreme environments is obtained through forming by adopting specific LPBF processes such as multidirectional cross scanning and the like.

The invention discloses a personalized PEEK (Polyether Ether Ketone) implant prosthesis and a design method thereof. The prosthesis is a chin prosthesis connected with the mandible of a human body and is made of polyether-ether-ketone (PEEK); the thickness and the shape of the chin region at the bottom of the prosthesis are designed by taking an ideal side appearance profile as a guide; a step is designed in a bone broken end area on the inner side face of the prosthesis, and the side face width of the step is matched with the movement amount of a free bone block. The inner side face of the prosthesis wraps the mandibular margin, and the two sides of the prosthesis are naturally connected with the mandibular margin. Compared with a traditional titanium fixing plate, the elastic modulus of polyether-ether-ketone is close to that of the jaw bone, and the stress shielding effect can be reduced. The personalized polyetheretherketone prosthesis is designed according to the shape of the retreated bone segment end in the operation, the lower jaw front bone block is integrally fixed, errors generated by bending a titanium plate in the operation are avoided, and the accuracy and stability of moving and positioning of the bone block are ensured. The chin shape can be designed in a personalized mode, the mass is light, and second-stage operation taking-out is not needed.

The invention discloses a polyether-ether-ketone-based composite material with low reflection and high electromagnetic shielding effectiveness and a preparation method of the polyether-ether-ketone-based composite material, and belongs to the technical field of electromagnetic shielding materials. The problems that an existing electromagnetic shielding material is high in reflection coefficient, insufficient in shielding effectiveness, poor in high temperature resistance and corrosion resistance and difficult to adapt to severe environment service are solved. The composite material is composed of a porous conductive substrate and an asymmetric conductive layer. Wherein the porous conductive substrate is formed by blending a soluble ketimine type polyether-ether-ketone solution and a conductive filler suspension and then carrying out non-solvent induced phase separation and acidification reduction reaction, the electric conductivity is 2.8 * 10 <-4 >-0.1839 S / cm, and the porosity is 80%-90%; the asymmetric conductive layer is plated on the surface of one side of the porous conductive substrate, and the asymmetric conductive layer is made of nickel-phosphorus alloy. The composite material significantly reduces the electromagnetic wave reflection coefficient through an absorption-reflection-reabsorption mechanism, has high electromagnetic shielding effectiveness and excellent high temperature resistance and corrosion resistance, and is suitable for serving in a severe environment.

A bellows shaped spinal implant, comprising an upper plate, a lower plate and a bellows shaped shell extending between and joining the upper and lower plates. The bellows shaped shell is formed of titanium or an alloy comprising titanium and includes a wall extending therearound that defines a hollow interior. The wall has a thickness in the range of 0.5 mm to 1.0 mm to provide for radiographic imaging through the wall. The wall is angled or curved inwardly or outwardly between the upper and lower plates to provide stiffness mimicking the stiffness properties of a similarly sized polyetheretherketone (PEEK) implant. The upper and lower plates each comprise porous contact regions including a three-dimensional gyroid lattice structure defined by a plurality of struts and pores in communication with the hollow interior. The outer surfaces of at least a portion of the struts may comprise a laser ablated textured surface.

The present invention relates to a transfer foil for transferring images onto solid substrates (transfer printing), such as textile supports, in particular T-shirts, metallic supports or plastic, in particular signs, ceramic supports, in particular cups and plates, etc., comprising a two-dimensional carrier based on polyester, based on polyether ether ketones or based on a cellulose-based material, having a layer (a) which is arranged on at least one of the carrier surfaces and which is made of a cross-linked, at least partially hydrolysed polyvinyl alcohol (PVA) polymer, The present invention also relates to the use of same. A further subject matter of the present invention is a ready-to-use system for transfer printing, comprising a transfer foil and an image applied thereto, in particular printed thereon, and a hot melt adhesive.

The invention relates to the technical field of bioanalytical chemistry, in particular to a method for simultaneously enriching and separating glycopeptides and phosphopeptides by using a bionic hydrophilic adsorbent, which specifically comprises the following steps: step 1, preparing a polyether-ether-ketone (PEEK) framework by using a fused deposition modeling method (FDM); 2, soaking the obtained PEEK framework in an aqueous solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, and carrying out a reaction; step 3, then, adding a mixed solution containing hyaluronic acid methacrylate, vinyl phosphoric acid, N, N-dimethyl bisacrylamide and phenyl-2, 4, 6-trimethylbenzoyl lithium phosphate into the PEEK framework; in the invention, in the aspect of material preparation, a fused deposition modeling method (FDM) is adopted to prepare a polyether-ether-ketone (PEEK) frame, and the material has good mechanical properties and chemical stability and can bear a series of subsequent complex treatment processes without being damaged.

Femoral implant part (4) or tiboral implant part (6) for an orthopedic knee joint prosthesis (2), wherein the implant part (4) has at least one surface area (10, 12) facing the bone and in contact with the bone in the implanted state, wherein the implant part (4) is at least partially, at least the surface area (10, 12) in contact with the bone, made of a plastic, in particular polyetheretherketone (PEEK) or a polyetheretherketone (PEEK) composite material. The implant part (4) has a three-dimensional surface structure (22, 24) in the surface area (10, 12) facing the bone.The three-dimensional surface structure (14) comprises a rib structure (26), wherein a first rib section (30) extending in a plane on a surface of the surface region (10, 12) or a first rib (28, 28-1) of the rib structure (26) extending in a plane on the surface of the surface region (10, 12) and a second rib section (30) extending in a plane on the surface of the surface region (10, 12) or a second rib (28, 28-2) of the rib structure (26) extending in a plane on the surface of the surface region (10, 12) extend in a plane at least sectionally in different directions.

The invention discloses a high-performance polyether-ether-ketone modified sealing material and a preparation method thereof, and relates to the technical field of sealing materials. The high-performance polyether-ether-ketone modified sealing material is prepared from the following raw materials in percentage by mass: 5 to 10 percent of polytetrafluoroethylene micro powder, 5 to 10 percent of graphene nanosheets, 10 to 15 percent of silicon carbide whiskers, 0.5 to 2 percent of silane coupling agent and the balance of polyether-ether-ketone, the preparation method of the high-performance polyether-ether-ketone modified sealing material comprises the following steps: mixing graphene nanosheets with a silane coupling agent, deionized water and absolute ethyl alcohol, carrying out ultrasonic dispersion for 2 hours, carrying out pretreatment to obtain a graphene nanosheet suspension, mixing the graphene nanosheet suspension with silicon carbide whiskers, polytetrafluoroethylene micro powder and polyether-ether-ketone, carrying out melt blending, and carrying out compression molding to obtain the high-performance polyether-ether-ketone modified sealing material. And cooling to obtain the high-performance polyether-ether-ketone modified sealing material.

The invention discloses a graphene-based high-strength heat-conducting film and a preparation method thereof, belongs to the technical field of heat-conducting film preparation, and aims to solve the technical problem that the strength and corrosion resistance of a heat-conducting film in the prior art need to be further improved. Graphene-aromatic phosphonate heat-conducting resin, maleic anhydride grafted fluorinated polyether-ether-ketone and fluorinated siloxane elastomer are jointly applied to membrane material preparation, so that the material forms a system with a continuous structure in the aspects of heat-conducting framework construction, interface connection and deformation slow release, the graphene-aromatic phosphonate heat-conducting resin provides a high-efficiency heat-conducting path, the maleic anhydride grafted fluorinated polyether-ether-ketone realizes stable interface bonding, and the fluorinated siloxane elastomer endows the membrane material with a structure retention capability under an external force and a medium environment. The obtained high-strength heat-conducting film has relatively high heat conductivity coefficient, strength and quality stability in an acid-base environment, and shows excellent comprehensive performance.

The invention discloses a high and low temperature resistant polyamide cable tie and a preparation method thereof, and relates to the technical field of polyamide cable ties. The high and low temperature resistant polyamide cable tie comprises the following components in parts by weight: 40 to 60 parts of polyamide-6, 12 to 15 parts of a modifier, 5 to 15 parts of polyether-ether-ketone, 15 to 20 parts of modified glass fiber, 5 to 10 parts of a flexibilizer, 0.5 to 1 part of an antioxidant and 0.3 to 0.6 part of a lubricant. By controlling reaction conditions, lignin is prevented from being dissolved, modification grafting is carried out on the surface of the lignin, a sulfonate group, a polyether-ether-ketone chain segment, a polydimethylsiloxane chain segment and an anhydride structure are introduced, meanwhile, the rigid structure of the lignin is kept, and then the modifier is prepared. The modifier can further cooperate with polyether-ether-ketone, modified glass fibers and a flexibilizer to effectively improve the mechanical properties and high and low temperature resistance of polyamide-6.

The invention provides a synchronous crosslinking type flame-retardant cable composite material and a preparation method thereof, and belongs to the technical field of cable materials. Partial discharge is inhibited through high dielectric constant and polarization performance of transition metal zirconium phosphate, a carbonized layer is generated at high temperature, and the flame retardant property is improved; the modified fiber combines high orientation of liquid crystal macromolecules and excellent mechanical and flame retardant properties of polyether-ether-ketone, and forms a block copolymer through dynamic grafting, so that the toughness, fatigue life and thermal stability of the material are enhanced; the silane-metal complex precursor improves the moisture resistance, flame retardance and heat insulation performance of the material through the water sealing effect of a silicon-oxygen network and a micro-ceramic layer generated at high temperature; all the components show a remarkable synergistic effect in the aspects of flame retardance, electrical performance and mechanical performance, multiple flame-retardant barriers are formed, the electrical performance of the material is stabilized, and the overall mechanical performance and interface stability of the composite material are remarkably enhanced.

The invention relates to a preparation method of a low-sulfonation-degree sulfonated polyetheretherketone-based composite proton exchange membrane. According to the method, 1, 3-propane sultone and NK-COF-41 are subjected to an addition reaction to synthesize a sulfonic-group-rich porous organic framework, then the sulfonic-group-rich porous organic framework is mixed with SPEEK, and the low-sulfonation-degree SPEEK / sulfonic-group-rich porous organic framework composite proton exchange membrane is prepared through a solution casting method. The sulfonic-group-rich porous organic framework obtained by the invention not only has a high specific surface area of 468.6 m < 2 > g <-1 >, but also has a sulfonation degree of nearly 90%, can provide abundant active sites for proton transfer, is stable in structure, hardly swells at 80 DEG C and 100% RH, and can be applied to the field of proton transfer. The prepared composite proton exchange membrane has the characteristics of high proton conductivity, high ion exchange capacity, low swelling rate and the like.

The invention relates to the field of fiber sizing agents and polymer-based composite materials thereof, in particular to a sulfonated polyetheretherketone / amino graphene composite sizing agent of aramid fibers and application of the sulfonated polyetheretherketone / amino graphene composite sizing agent. The sizing agent is composed of sulfonated polyetheretherketone, amino graphene, a reinforcing agent and a solvent, sulfonated polyetheretherketone and amino graphene are prepared through a specific process, and the sulfonated polyetheretherketone and the amino graphene are combined with the reinforcing agent to form a stable covalent bond and a cross-linked structure. The surface wettability and mechanical property of the aramid fiber are remarkably improved, the interface bonding force of the aramid fiber and thermoplastic resin is improved, the mechanical strength and toughness of the aramid fiber composite material are improved, and the method is suitable for the field of high-performance composite materials and has important industrial value.

The invention provides a sealing gasket for an alkaline high-temperature electrolytic cell and a preparation method of the sealing gasket. The invention firstly provides the sealing gasket for the alkaline high-temperature electrolytic cell, and the sealing gasket comprises the following material components in parts by mass: 150-180 parts of polytetrafluoroethylene (PTFE) resin, 0-80 parts of polyether-ether-ketone (PEEK), 5-18 parts of calcium carbonate, 10-50 parts of polyphenylene sulfide (PPS) short fibers, 0-20 parts of aluminum oxide, 0-10 parts of molybdenum disulfide, 1-5 parts of barium titanate and 0-15 parts of graphite. The preparation method of the sealing gasket for the alkaline high-temperature electrolytic cell comprises the following steps: at normal temperature, stirring and mixing the material components according to a specific ratio to obtain a mixture, pre-pressing and molding the obtained mixture, sintering, and finally cooling to obtain the sealing gasket for the alkaline high-temperature electrolytic cell. The sealing gasket provided by the invention meets the requirement of the high-temperature working environment of the alkaline high-temperature electrolytic bath as high as 100-300 DEG C, has high-temperature resistance and strong-alkali resistance, and is simple in preparation method, low in production cost and easy to industrially popularize, and existing equipment can be utilized.

The invention discloses a design and manufacturing method of a high-bearing-capacity carbon fiber reinforced polyether-ether-ketone (PEEK) gear, and provides a machining method which can completely, accurately and efficiently analyze and evaluate the bearing performance of the carbon fiber reinforced PEEK gear and is used for the carbon fiber reinforced PEEK gear. The processing method comprises the following steps: S1, constructing a constitutive model of the carbon fiber reinforced PEEK laminated plate; s2, calculating the contact load of the carbon fiber reinforced PEEK gear; s3, carrying out parameter optimization design on the carbon fiber reinforced PEEK material; and S4, processing and manufacturing the carbon fiber reinforced PEEK gear. According to the method, the carbon fiber reinforced PEEK constitutive structure under the fiber-matrix effect can be constructed, the effect of parameters such as the fiber laying layer number, the layer thickness and the angle on the bearing contact performance of the gear is studied, optimization design can be conducted on material parameters, finally, gear machining is conducted according to ideal material structure parameters in the subsequent machining process, and the gear machining efficiency is improved. The gear contact bearing performance is further improved, and the service life of the gear is prolonged.

The invention relates to the field of high polymer materials, and discloses an antistatic polyether-ether-ketone composite material for semiconductor devices, the antistatic polyether-ether-ketone composite material comprises the following raw materials by weight: 60-70 parts of polyether-ether-ketone, 20-30 parts of polyetherimide, 3-5 parts of modified carbon nanotubes, 2-4 parts of nano core-shell particles, 0.5-1 part of a coupling agent, and 0.2-0.5 part of an antioxidant; the modified carbon nanotubes are obtained by acidizing carbon nanotubes and grafting imidazolyl quaternary ammonium salt on the surfaces of the acidized carbon nanotubes; according to the antistatic polyether-ether-ketone composite material, through blending of polyetherimide, the melt viscosity of a composite system can be reduced, the problems that polyether-ether-ketone is high in processing temperature and poor in flowability are solved, and the antistatic performance of the composite material is improved. Through the synergistic interaction of the added modified carbon nanotubes and nano core-shell particles, the material is endowed with excellent mechanical properties, wear resistance and antistatic properties.

The invention relates to the technical field of commercial spaceflight, in particular to a self-repairing liquid metal heat pipe for commercial spaceflight, which comprises a polyether-ether-ketone composite pipe, gallium bismuth zinc liquid gold, a micro-nano repairing film, a main hot runner, a pressure detector, a standby hot runner and an emergency plugging valve, and the main hot runner is an axial through channel in the polyether-ether-ketone composite pipe, and the standby hot runners are annularly and circumferentially arrayed along the inner wall of the main hot runner. Compared with heat conduction in the prior art, medium leakage is stopped through cooperative plugging in a damaged scene, so that the heat conduction efficiency is improved, and the service life of the heat exchanger is prolonged. And meanwhile, the detector is in signal linkage with the plugging valve, a heat transfer loop is rapidly switched in the case of serious damage, the continuous and stable thermal control function is achieved, and therefore the on-orbit operation life of a spacecraft is further prolonged.

The utility model belongs to the field of hoses, particularly relates to a wear-resistant hose kit, and aims to solve the problems that an existing hose may fall off under high-strength use, the connection effect of the hose kit is poor, the hose kit cannot be suitable for connection of hoses with different pipe diameters, the hose may be broken under long-term dragging, and the corrosion resistance is poor. The device comprises a hose, two steel wire ropes, a polycarbonate layer and two sets of fixing assemblies, the two ends of the hose are fixedly communicated with connectors, one end of each connector is sleeved with a connecting pipe, the connectors are arranged in a step shape, a plurality of screws are fixed to one side of the partition plate, the other ends of the screws are in threaded connection with nuts, and the screws are connected with the nuts in a threaded mode. The nuts are arranged on one side of the fixing block, the partition plate is conveniently fixed, the protective ring can be further prevented from falling off, the polyether-ether-ketone layer has excellent comprehensive performance such as high temperature resistance, corrosion resistance and fatigue resistance, the polyether-ether-ketone layer is arranged on the outermost portion and is not prone to damage, and the service life of the hose is prolonged.

The invention relates to a stress loading device and method for amorphous alloy magnetic property measurement, and belongs to the technical field of amorphous alloy magnetic property measurement, and the device comprises the steps: to-be-measured amorphous alloy is placed in a magnet exciting coil, passes through an iron yoke, and is connected with a loading end of an electromagnet loading part; the electromagnet loading part is used for carrying out stress loading on the to-be-tested amorphous alloy from two ends of the to-be-tested amorphous alloy; and the double-H coil is placed in the excitation coil, and the magnetic characteristics of the amorphous alloy are measured by accurately measuring the magnetic flux density and the magnetic field intensity after the pressure is stable. The anti-fracture clamp is made of a polyether-ether-ketone material, is mounted in an inner cavity of the excitation coil and is used for clamping and fixing the amorphous alloy to be detected from the upper side and the lower side of the amorphous alloy to be detected; and the double-H coil is placed in a groove formed in the upper surface of the anti-fracture clamp. The mechanical stress scene borne by the amorphous alloy in actual complex working conditions can be simulated, and an effective solution is practically provided for amorphous alloy magnetic characteristic measurement environments needing to consider mechanical stress factors.

The invention relates to a reinforced composite material, in particular to a fiber reinforced composite material which comprises unprocessed cellosilk raw materials and thermoplastic high-molecular polymer raw materials, cellosilk is one or more of carbon fibers, glass fibers, Kevlar fibers, UHMWPE fibers, basalt fibers, bamboo fibers, jute fibers and metal fibers, the thermoplastic high-molecular polymer raw materials are thermoplastic high-molecular polymer raw materials, the thermoplastic high-molecular polymer raw materials are thermoplastic high-molecular polymer raw materials, and the thermoplastic high-molecular polymer raw materials are thermoplastic high-molecular polymer raw materials. The thermoplastic high-molecular polymer comprises but is not limited to one or a mixture of more of polylactic acid (PLA), polyethylene glycol terephthalate (PET / PETG), polyethylene (PE), polypropylene (PP), acrylonitrile butadiene styrene (ABS), polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS) and polyether-ether-ketone (PEEK). The compatilizer and other small materials are used for increasing the bonding property of the thermoplastic resin and the fiber to be impregnated, the quality of the fiber reinforced composite material is improved, and the continuous fiber reinforced thermoplastic resin impregnated wire rod used for the fused deposition process is obtained.

An extrusion product, such as a film, pipe, or cable / wire sheath, includes a first layer and a second layer. The first layer includes a polymeric material (A) having repeating units of the formula: -0-Ph-0-Ph-CO-Ph I and repeating units of the formula: -0-Ph-Ph-0-Ph-CO-Ph II, where Ph represents a phenylene moiety. The second layer may be a polyaryletherketone (PAEK), such as polyetheretherketone (PEEK). The first layer is intended to reduce the formation of deposits on the die of an extrusion device during extrusion of the product. A method for producing a product including the first layer and the second layer, as well as the use of the polymeric material (A) to reduce the formation of deposits on the die of an extrusion device during extrusion of a second polymeric material, are also described.

The invention relates to a rudder controller-based embracing arm type anti-loosening device which comprises a shell, a cover plate is arranged at the top of the shell, a connector is arranged at the top of the cover plate, a PCB is fixedly connected to the interior of the shell, first mounting columns are fixedly connected to the left side and the right side of the top of the cover plate, and second mounting columns are arranged at the bottoms of the first mounting columns; a cushion block is arranged outside the first mounting column, a clamping hole is formed in the outer portion of the cushion block, a mounting assembly used for conveniently assembling the second mounting column into the first mounting column is arranged at the top of the second mounting column, and two clamping blocks are fixedly connected to the outer portion of the mounting assembly. Through cooperation of the cushion blocks made of insulation polyether-ether-ketone resin, the precisely fixed PCB, the cover plate, the connector and other structures, the effects of precise electrical connection and stable overall structure are achieved, the cushion blocks and the first mounting columns form holding arm type clamping connection through the clamping holes, the bottoms of the cushion blocks make contact with the PCB, electrical interference is isolated through the insulation performance, and the service life of the PCB is prolonged. And meanwhile, high-strength stable support is provided.

Use of a composite as a heat and fire shielding material particularly in batteries, wherein the composite comprises at least one layer of a thermoplastic material, wherein said at least one layer is based on an at least partial consolidation of a mixture of: a. one or more thermoplastic fibers selected from the group consisting of polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyether ketone-ketone (PEKK), polyether imide (PEI), polyether sulfone (PES), polysulfone (PSU), polyphenylene sulfone (PPSU), polyimide (PI), polycarbonate (PC), polyamide (PA), polyaryletherketone (PAEK) or any combination thereof; and b. one or more reinforcement fibers; wherein at least 90 vol % of the one or more reinforcement fibers have an average length according to a gaussian normal distribution of at least 6 mm, preferably of at least 10 mm, more preferably of at least 20 mm.

The invention discloses polyether-ether-ketone and a preparation method thereof, the structure of the polyether-ether-ketone is shown as the following formula (I): # imgabs0 #, R1 is introduced by a bisphenol monomer, n is the number of polymer repeating units, and n is greater than 2. The invention further discloses a preparation method of the polyether-ether-ketone, the solubility of the polyether-ether-ketone in a common solvent is remarkably improved, and the polyether-ether-ketone keeps excellent thermal stability.

This invention belongs to the field of cable technology, specifically a thin-walled oxygen-barrier high-temperature resistant cable, comprising a conductor core and a thin-walled outer sheath. The conductor core has a high-temperature resistant insulation layer made of polyetheretherketone (PEEK) composite material on its outer side. Between the high-temperature resistant insulation layer and the thin-walled outer sheath, from the inside out, are sequentially arranged a ceramicized oxygen barrier layer and a flame-retardant reinforcement layer. The ceramicized oxygen barrier layer is a nano-modified ceramicized silicone rubber layer with a thickness of 0.05–0.15 mm, including an outer layer doped with silicon carbide whiskers and an inner layer doped with zinc borate. This invention prepares an ultra-thin ceramicized layer through gradient doping, resolving the contradiction between thin-walled design and oxygen barrier properties, and effectively improving the interfacial peel strength. This reduces the cable's outer diameter and bending radius, making the cable lightweight and suitable for high-dynamic applications.