498 results about "Polyaryletherketone" patented technology

The invention relates to the technical field of polymer synthesis, in particular to polyaryletherketone resin containing imide side groups and a preparation method of the polyaryletherketone resin. By introducing an imide structure into aryl diphenol containing amino, a plurality of polyaryletherketone resins containing imide side groups are designed and synthesized, and are used for meeting various application requirements, such as high-performance materials, electronic materials, optical materials and the like; meanwhile, the performance of the polyaryletherketone material is also improved, so that the polyaryletherketone material is more suitable for various application environments.

The invention discloses a crystalline polyaryletherketone surface grafted carbon fiber and a preparation method thereof, and belongs to the technical field of carbon materials.The preparation method comprises the following steps that an amino end-capping reagent containing sulfuryl, a difluoro monomer, a bisphenol monomer and potassium carbonate are placed in sulfolane to be subjected to a polymerization reaction, and amino-terminated polyarylether is obtained; carrying out diazonium salt reaction on the amino-terminated polyarylether and nitrite tetrafluoroborate to obtain diazonium salt-terminated polyarylether; connecting the carbon fiber with a cathode, immersing the carbon fiber in an electrolyte containing diazonium salt terminated polyarylether, and applying a reduction potential for reaction to obtain polyarylether grafted carbon fiber; and carrying out hydrolysis reaction on the carbon fiber grafted with polyarylether in an acid environment to obtain the crystalline polyaryletherketone surface grafted carbon fiber. According to the crystalline polyaryletherketone surface grafting modified carbon fiber prepared by the invention, the carbon fiber is directly connected with a polymer through high-temperature-resistant and corrosion-resistant phenyl and sulfuryl, so that the crystalline polyaryletherketone surface grafting modified carbon fiber has better high-temperature resistance and corrosion resistance.

The invention discloses a glue solution for a copper-clad plate and a preparation method of the glue solution, and relates to the technical field of copper-clad plates. According to the prepared glue solution for the copper-clad plate, the composite epoxy resin, the curing agent, the accelerant, the solvent, the flexibilizer and the inorganic filler, the composite epoxy resin comprises bisphenol A epoxy resin, epoxy phenyl polysiloxane, itaconic acid polyaryletherketone and hydroxyl-terminated fluorine-containing vinyl polysiloxane, so that the interface bonding force with the copper plate is enhanced; the dielectric constant and the dielectric loss are effectively reduced, the peel strength and the toughness of the material are also remarkably improved, and the toughening agent is modified polyether sulfone microspheres; the modified polyethersulfone microspheres are prepared by coating polyethersulfone microspheres with hexamethylenediamine tetrapropionamide diamine, the hexamethylenediamine tetrapropionamide diamine is prepared by carrying out acylation condensation reaction on hexamethylenediamine tetramethyl propionate and ethylenediamine, and the polyethersulfone microspheres are prepared by carrying out electrostatic spinning on a spinning solution of polyethersulfone and vinylpyridine, so that the peel strength of the glue solution is remarkably improved.

The invention relates to the technical field of composite materials, in particular to fiber sizing liquid, a polyether-ether-ketone composite material and a preparation method of the polyether-ether-ketone composite material, and the fiber sizing liquid comprises low-molecular-weight polyaryletherketone containing imide side groups, carbon nanotubes and the like; the composite material is obtained by carrying out heat treatment on fibers, re-sizing the fibers by adopting the sizing liquid, and then carrying out melt extrusion on the fibers and polyether-ether-ketone. The sizing liquid provided by the invention can effectively improve the compatibility between fibers and PEEK, so that the mechanical properties of the composite material are obviously improved.

The invention discloses an anti-corrosion fireproof coating applied to a new energy battery box and a preparation method, and relates to the technical field of industrial coatings, the anti-corrosion fireproof coating comprises the following specific components: a base resin system, a curing agent, a functional filler system, a flame retardant system, a solvent system and an auxiliary agent system; the anticorrosive and fireproof coating further comprises additives, wherein the additives specifically comprise a functionalized MXene loaded lithium ion adsorbent, a metal organic framework encapsulated quaternary phosphonium salt, polyaryletherketone coated antimony trioxide nano-particles and boron-nitrogen co-doped graphene aerogel powder; the material is prepared based on the materials. According to the invention, multiple additives are synergistically introduced into a traditional basic coating system, and on the basis of a basic flame-retardant and anti-corrosion structure, lithium ion directional adsorption, gas-phase free radical active intervention, high-temperature carbonization barrier construction and three-dimensional thermal barrier network configuration are further realized; therefore, the multi-dimensional safety performance of the coating in battery thermal runaway, salt spray corrosion and high-temperature impact environments is remarkably improved.

The invention belongs to the technical field of modification of ultra-high molecular weight polyethylene, and particularly relates to special resin for a modified ultra-high molecular weight polyethylene lining oil pipe and a preparation method of the special resin. The special resin for the modified ultra-high molecular weight polyethylene lining oil pipe is prepared from the following raw materials in parts by mass: 65 to 80 parts of ultra-high molecular weight polyethylene, 5 to 10 parts of high-density polyethylene, 8 to 12 parts of modified polyaryletherketone, 4 to 7 parts of modified hyperbranched polyester, 0.3 to 2 parts of silicone master batch and 0.1 to 0.5 part of antioxidant. The lining oil pipe prepared from the special resin for the modified ultra-high molecular weight polyethylene lining oil pipe has excellent wear resistance and high temperature resistance, and also has good mechanical properties such as tensile strength and impact strength.

The invention belongs to the technical field of 3D printing materials, and particularly relates to an interlayer reinforced composite material, a preparation method thereof and application of the interlayer reinforced composite material as a 3D printing material. A copolymerization group is introduced into polyaryletherketone, so that polyaryletherketone has a unique molecular structure and can compete with folding of an ether ketone chain segment in the crystallization process, in this way, in-situ copolymerization polyaryletherketone has a lower crystallization rate compared with polyether-ether-ketone or a polyether ketone system, the healing time of adjacent fused filaments of a 3D printing product is prolonged, and the 3D printing quality is improved. Compared with a conventional 3D printing material, the 3D printing material has the advantages that the interlayer strength is effectively improved and the interlayer reinforcing effect is achieved due to the long healing time, the interlayer performance of a 3D printing product obtained by using the 3D printing material is good, the tensile strength is 120-130 MPa, the interlayer tensile strength is 20-30 MPa, and the application range is wider. The interlayer reinforced composite material provided by the invention has the advantages of lower melting point, favorable processability, favorable mechanical properties, favorable high-temperature resistance and excellent comprehensive properties.

The invention relates to the technical field of catalyst materials, and particularly discloses a high-stability hydrogenation catalyst and a preparation method thereof. The invention relates to a preparation method of a high-stability hydrogenation catalyst, which comprises the following steps: preparing a hollow porous microsphere as an inner core from amino-terminated hyperbranched polyaryletherketone and polyvinyl alcohol, and then coating the porous microsphere with a mesoporous silicon dioxide intermediate layer by a sol-gel method; and finally, forming an Mg-Al hydrotalcite layer on the outermost side through a coprecipitation method, dipping and modifying with La (NO3) 3 and Ce (NO3) 3 solutions to obtain a catalyst carrier, dipping the catalyst carrier in an active metal dipping solution, and drying to obtain the catalyst. The high-stability hydrogenation catalyst provided by the invention has excellent mechanical properties and more reaction active sites, has high catalytic activity and catalytic efficiency, and is relatively long in catalytic life.

The invention discloses a modified polyaryletherketone composition which comprises the following components in parts by weight: 45-75 parts of a polymer material, 5-15 parts of fiber filler, 0-5 parts of polytetrafluoroethylene, 15-20 parts of ultra-high molecular weight polyethylene, 5-10 parts of lamellar structure filler and 1-5 parts of inorganic nano filler, the polymer material is polyaryletherketone or a mixture of polyaryletherketone and polyimide; the molecular weight of the ultra-high molecular weight polyethylene is in a range of 1 million to 7 million; the material of the lamellar structure is graphite, tungsten disulfide or a mixture of the graphite and the tungsten disulfide. The dynamic friction coefficient of the modified polyaryletherketone composition does not exceed 0.192, the 12h wear rate under the 260 DEG C high-temperature oil-free condition does not exceed 0.45%, the 48h wear rate does not exceed 0.95%, and the modified polyaryletherketone composition has the advantages of low friction coefficient and low wear rate at high temperature. The invention correspondingly provides a high performance liquid chromatography rotor sealing fin and a preparation method of the rotor sealing fin.

The utility model relates to the field of high polymer materials, in particular to a polyaryletherketone resin pre-impregnated line material winding and forming device which is used for preparing polyaryletherketone resin pre-impregnated line materials and comprises a translation table top, a material impregnating groove, a guide column and a tensioning pulley. According to the present invention, with the structural design such as a driving system and the like, the carbon fiber can be immersed in the polyaryletherketone resin at low cost and high efficiency to obtain the sheet-shaped prepreg, the sheet-shaped prepreg is subjected to hot pressing to form the polyaryletherketone resin-based composite material of the fiber fabric, and the composite material has characteristics of excellent strength, wide application, and easy promotion and application. Wide application prospects are realized in the fields of aviation, aerospace equipment and high-end civil use.

The invention provides a preparation method and application of low-cost 1, 4-naphthalene diphenol and a polyaryletherketone homopolymer of the low-cost 1, 4-naphthalene diphenol. The method comprises the following steps: mixing 1, 4-naphthoquinone, a polar solvent and a catalyst to form a mixture; feeding the mixture into a micro-channel tubular reactor, and introducing hydrogen to carry out continuous catalytic hydrogenation reduction reaction; separating the catalyst to obtain a reaction solution containing 1, 4-naphthalene diphenol; adding a non-polar solvent into the reaction liquid for crystallization; and separating to obtain a 1, 4-naphthalene diphenol product. The product obtained by adopting the preparation method and the preparation system provided by the invention is high in purity, good in color, strong in stability and suitable for industrial production, a high-quality raw material is provided for subsequent synthesis of the 1, 4-naphthalene structure polyaryletherketone homopolymer, and smooth proceeding of a polymerization reaction and stability of product quality are ensured.

A polyaryletherketone with a wide molecular weight distribution and a preparation method therefor. The polyaryletherketone has a Tg of at least 143° C., a Tm of at least 330° C., a crystallinity of at least 20%, a PDI of 2.5-2.9, and a gel content of as low as 0.2%. An extrusion blending or solution blending method is used to prepare the polyaryletherketone with the wide molecular weight distribution and without a high branching degree. When the viscosity of the polyaryletherketone is the same at low shear strength, the viscosity at high shear strength is smaller, such that the processing difficulty of a product can be significantly reduced, expanding the applicable range of the product. The gel content of the polyaryletherketone is remarkably reduced, resulting in a more streamlined process in the preparation of a molded product without significant fish-eye appearances on a film due to aggregation of the gel.

The invention discloses a carbon fiber sizing agent composition suitable for thermoplastic resin, sized carbon fiber, a carbon fiber sizing agent as well as a preparation method and application of the carbon fiber sizing agent, belongs to the technical field of carbon fiber sizing agents, and solves the problem that a sizing agent in the prior art cannot meet excellent mechanical properties and high temperature resistance at the same time. The composition is prepared from the following components in parts by weight: 15 to 35 parts of modified polyaryletherketone resin matrix, 0.3 to 2 parts of neutralizer, 1 to 3 parts of emulsifier, 1.5 to 3 parts of defoaming agent and 57 to 80 parts of deionized water. The sizing agent containing the composition has good wettability and film-forming property on the surface of the carbon fiber, and meanwhile, the sizing agent is matched with other components with specific contents in the composition, so that the carbon fiber sizing agent containing the carbon fiber sizing agent composition has excellent heat resistance, can bear processing at the high temperature of 350 DEG C or above, and has good application prospects. And the composite material containing the sizing agent has excellent interlaminar shear strength.

The invention discloses a polyetherimide / polyaryletherketone composite material with high breakdown performance and mechanical toughness as well as a preparation method and application of the polyetherimide / polyaryletherketone composite material, and belongs to the technical field of polyetherimide insulation. The invention solves the problems that the dielectric constant of the polyetherimide can be improved by increasing the use amount of the conductive filler in the prior art, but the breakdown performance of the polyetherimide is reduced, so that the polyetherimide cannot have toughness and high breakdown performance at the same time. According to the invention, polyetherimide and polyaryletherketone are used as raw materials and are mixed by adopting a solution blending method, then a substrate is coated with the mixture, and the polyaryletherketone / polyetherimide / polyaryletherketone composite material is obtained through curing. According to the invention, polyetherimide and polyaryletherketone are well dispersed on a microscopic scale, and the composite material has low dielectric loss of polyetherimide and high toughness of PAEK, and has good dielectric properties and breakdown electrical strength; the material is suitable for the advanced fields of high-energy density capacitors, power electronic devices, aerospace electrical insulation parts, new energy automobile high-voltage systems and the like.

The invention discloses a wear-resistant polyaryletherketone brush wire material and a preparation method thereof, and belongs to the technical field of high polymer materials. The brush wire material is prepared from the following raw materials: 50 to 60 parts of polyamide resin, 20 to 30 parts of polyaryletherketone resin, 10 to 20 parts of carbon fiber, 5 to 15 parts of silicone rubber, 6 to 12 parts of filler, 4 to 10 parts of modified carbon nanotube, 0.5 to 1.5 parts of coupling agent, 0.3 to 0.6 part of ultraviolet light absorber, 0.3 to 0.6 part of light stabilizer and 0.3 to 1 part of lubricant. The polyaryletherketone resin with excellent heat resistance, wear resistance, chemical corrosion resistance and the like is added into the brush wire material, the modified carbon nanotubes containing the carbon nanotubes and quaternary ammonium salt structures are also added, and the modified carbon nanotubes are good in dispersity and can fully play a role, so that under the combined action of all the raw materials, the brush wire material can be used for preparing the brush wire material. The brush wire material disclosed by the invention has excellent and stable wear resistance, antibacterial property, antistatic property and the like, and is excellent in comprehensive performance.

The invention discloses a high-performance PEEK composite material and application thereof in a robot skeleton, and belongs to the technical field of special engineering plastics, the PEEK composite material comprises the following components by weight: 50-80 parts of PEEK, 10-20 parts of an elastomer, 15-30 parts of carbon fiber, and 5-10 parts of a compatilizer, monomers 1-4 are copolymerized to obtain a hyperbranched polyaryletherketone copolymer, the hyperbranched polyaryletherketone copolymer is terminated by polysiloxane and modified by maleic anhydride, the monomer 1 is 4, 4 ', 4'-trihydroxy-3, 3 ', 3'-trimethoxytriphenylmethane, the monomer 2 is isopropyl hydroquinone, the monomer 3 is hydroquinone, and the monomer 4 is 4, 4 '-difluorobenzophenone. According to the high-performance PEEK composite material and the application of the high-performance PEEK composite material in the robot skeleton, the self-made compatilizer is added, so that the PEEK and carbon fiber composite material has the characteristics of high strength, good interfacial compatibility, good bending fatigue performance and the like.

The invention discloses an insulated wire and a preparation method thereof, a coil and electronic / electrical equipment, and relates to the technical field of insulated wires, the insulated wire comprises a conductor, and a bottom layer and an outer insulating layer which are sequentially arranged at the periphery of the conductor, and the bottom layer and the outer insulating layer are jointly used as an insulating layer of the insulated wire; wherein the bottom layer is made of phenolphthalein polyaryletherketone; and the material of the outer insulating layer is obtained by blending and granulating at least two of polyether-ether-ketone, thermoplastic polyimide and phenolphthalein polyaryletherketone. According to the insulated wire provided by the invention, the PEK-C layer is added between the outer insulating layer and the metal conductor as a bottom layer, so that the adhesiveness between PEEK and copper can be improved, and the risks of pipe separation and breakage are reduced; and meanwhile, TPI is mixed in the PEEK of the outer insulating layer, so that on one hand, the bonding force of the whole insulating layer to metal can be improved, and the insulating layer can still have good insulating performance under the condition of high temperature.

An insulated wire including a conductor and a resin coating layer covering a periphery of the conductor, wherein the conductor is an aluminum conductor surface-treated with CO2 plasma, and at least a portion of the resin coating layer in contact with the conductor includes at least one kind of a polyaryletherketone resin and a polyphenylene sulfide resin.

The invention discloses a phenolphthalein-based polyaryletherketone polymer and a preparation method thereof, and the phenolphthalein-based polyaryletherketone polymer is prepared from the following raw materials: 240 to 370 parts of phenolphthalein monomer, 45 to 150 parts of modified phenolphthalein, 140 to 220 parts of 2, 6-dichlorobenzonitrile and 3 to 12 parts of alkyl halide. The modified phenolphthalein is prepared from phenolphthalein and a modifier; the modifying agent is selected from at least one of 3-amino propyl trimethoxy silane, 3-amino propyl triethoxy silane, bis (aminopropyl) polydimethylsiloxane, and aminopropyl terminated polydimethylsiloxane. By introducing a siloxane side chain and a cyano side bond and using long-chain aliphatic hydrocarbon for end capping, the bonding capacity of the polymer and other materials is improved, and meanwhile, the high temperature resistance and toughness of the polymer are kept.

The invention relates to the technical field of high-performance polymer synthesis, in particular to a preparation method of polyaryletherketone, which comprises the following steps: S1, under the condition of inert gas, adding dihalogenated benzophenone and bisphenol fluorene into a solvent, uniformly mixing, adding alkali carbonate, and reacting under the condition of heating to obtain an oligomer; s2, adding aromatic diphenol into the system in the step S1 in batches, and carrying out temperature programming reaction to obtain a block copolymer; and S3, adding an end-capping reagent into the system to carry out end-capping reaction, and after the reaction is finished, carrying out post-treatment to obtain the polyaryletherketone. According to the preparation method of the polyaryletherketone, a feeding mode of gradient segmented feeding is adopted, a polymerization process of low-temperature pre-polycondensation and high-temperature chain extension copolymerization is developed, the reaction rate is controllable, sequence distribution is uniform, and product performance is stable. In addition, the preparation method can effectively reduce energy consumption and is more beneficial to industrial production.

The invention relates to the technical field of composite materials, in particular to a polyaryletherketone-based shape memory composite material and a preparation method thereof. Comprising a terpolymer, shape memory polyurethane, a first heat-conducting filler and a second heat-conducting filler, 4, 4 '-difluorobenzophenone and hydroquinone are firstly pre-polymerized to obtain a PEEK prepolymer, the PEEK prepolymer is terminated by a hydroxyl olefine acid ester monomer to obtain a terminated copolymer, and then an acrylate monomer and the terminated copolymer are subjected to double-bond addition to obtain the terpolymer; the first heat-conducting filler is a one-dimensional nano heat-conducting filler; the second heat-conducting filler is a zero-dimensional and / or two-dimensional heat-conducting substance; the prepared composite material has the shape fixing rate of 85% or above and the shape recovery rate of 87% or above, the recovery time is shorter than 25 seconds, and the good shape memory performance is achieved.

The invention discloses a composite material with a shielding function, a preparation method thereof and an interphone shell. The composite material comprises a polycarbonate-acrylonitrile-butadiene-styrene copolymer, a modified conductive filler, maleic anhydride grafted polyethylene, polyaryletherketone, a flame retardant, an antioxidant, glass microfibers and a compatilizer, wherein the modified conductive filler is aluminum oxide ceramic particles subjected to chemical copper plating and graft polymerization treatment. The preparation method comprises the steps of modified conductive filler preparation, step-by-step raw material mixing, twin-screw extrusion granulation and drying. The interphone shell is prepared from the composite material through injection molding, and the injection molding process comprises the steps of raw material drying, injection molding machine preheating, charging and injection molding, and demolding and finishing. The composite material is stable in electromagnetic shielding performance and has good mechanical strength and heat resistance; the preparation method can improve the dispersity of the components and is adaptive to conventional equipment; the interphone shell can block electromagnetic wave interference, is suitable for being used in multiple environments, and meets the requirements of an electronic equipment shell for shielding and structural performance.

A cam follower adapted for use in connection with a turntable assembly includes a common support shaft having a longitudinal axis and first and second roller assemblies, each having an outer tire portion and an inner bearing portion. The outer tire portions have curved outer peripheries shaped as truncated spheres, spheroids or ellipsoids, are rotatable about the longitudinal axis independently of one another, and are formed from a polymer material, such as polyimide, polyaryletherketone (PAEK), acetal, cast nylon 12 or cast nylon 6. The outer tire portion of the first roller assembly is adapted to be positioned a first radial distance, and the outer tire portion of the second roller assembly is adapted to be positioned a second radial distance, from the axis of rotation of the turntable assembly, the second radial distance being different than the first radial distance.

The invention relates to the technical field of high polymer material processing, in particular to a high-strength modified polyaryletherketone profile and a preparation method thereof.The preparation method includes the steps that S1, chopped fibers are subjected to surface activating treatment after being heated and dried to remove impurities, then ultrasonic dipping treatment is conducted in an interface treatment solution, and interface treatment fibers are obtained after taking out and drying; an interface treatment agent contained in the interface treatment solution is bisphenol AF type polyaryletherketone PI-PAEK containing an imide side group; s2, the interface treating agent and polyaryletherketone resin are adopted or not adopted to be subjected to melt blending to serve as matrix resin, the matrix resin and the interface treating fibers are subjected to melt blending extrusion, granulation and forming, and the high-strength modified polyaryletherketone profile is obtained; the modified polyaryletherketone profile disclosed by the invention has relatively high mechanical property and glass transition temperature and relatively low thermal expansion coefficient.

The invention relates to the technical field of high polymer material modification, in particular to an antistatic polyaryletherketone composite material with low filler content and a preparation method thereof, the antistatic polyaryletherketone composite material comprises polyaryletherketone resin, 3%-5% of one-dimensional conductive filler and 1%-3% of ionic liquid modified two-dimensional conductive filler; the preparation method comprises the following steps: mixing a one-dimensional conductive filler with an ionic liquid modified two-dimensional conductive filler, performing ball milling, mixing with an amino silane coupling agent solution, performing ultrasonic treatment, pre-mixing the pre-treated filler obtained by drying with polyaryletherketone, and performing melt blending extrusion to obtain the low-filler-content anti-static polyaryletherketone composite material. The composite material disclosed by the invention is low in filler content and relatively good in comprehensive antistatic property and mechanical property.

The invention provides a sizing carbon fiber as well as a preparation method and application thereof. The sizing carbon fiber comprises a carbon fiber tow and a polyimide sizing agent loaded on the surface of the carbon fiber tow, the polyimide sizing agent has a structural unit shown as a formula I. Polyimide with the same ether ketone structure as the polyaryletherketone resin is adopted as a sizing agent, so that the carbon fibers and the polyaryletherketone resin form firm interface bonding more easily, and sufficient infiltration of the polyaryletherketone resin on the carbon fibers in the automatic laying process is facilitated; the internal defects of the composite material obtained through automatic laying forming are reduced, and the mechanical property of the composite material is improved; and the polyimide sizing agent has good temperature resistance and is suitable for preparing a carbon fiber reinforced high-performance thermoplastic composite material.

The invention discloses a polyaryletherketone composite implant material and a preparation method and application thereof, and belongs to the technical field of medical materials.The preparation method of the polyaryletherketone composite implant material comprises the following steps that a carbon fiber reinforced polyaryletherketone substrate with the surface provided with a groove structure and conductivity is prepared; based on a precipitation method, a calcium compound, a magnesium compound and a phosphoric acid aqueous solution are used for preparing white calcium stone; the preparation method comprises the following steps: carrying out surface modification on the white calcium phosphate by utilizing polydopamine, so as to obtain modified white calcium phosphate; adding the modified white calcium phosphate and a degradable piezoelectric polymer into a solvent, and mixing to obtain a mixed solution; and coating a carbon fiber reinforced polyaryletherketone substrate with the mixed solution, and performing drying and annealing treatment to form a coating, thereby obtaining the polyaryletherketone composite implant material. According to the invention, the degradable piezoelectric composite coating doped with the white phosphorus calcium stone, which has piezoelectric characteristics and ion release capability, is constructed, so that double biomimetic effects of an electric signal and a chemical signal in a bone healing microenvironment are realized.

The invention discloses a surface protective film and a preparation method thereof, and belongs to the technical field of protective films. The surface protection film comprises a surface layer, a core layer and a bonding layer which are arranged in sequence, the surface layer comprises first polypropylene matrix resin, an organic ultraviolet absorbent and an inorganic ultraviolet screening agent; the core layer comprises second polypropylene matrix resin, polyaryletherketone nanofibers and flaky mica powder of which the surface is coated with cerium oxide; the bonding layer comprises a thermoplastic SEBS elastomer, hydrogenated bonding resin, an organic zinc compound, an ultraviolet light stabilizer and a plasticizer containing an epoxy group. The surface protection film has excellent ultraviolet aging resistance and high temperature resistance, the adhesive force can still be kept within a certain range under the conditions of ultraviolet radiation and high temperature, the surface protection film can be easily unwound under the condition of high temperature, and no residual adhesive is separated out.

To provide an electrical insulation film for motor that does not break during motor assembly and has a superior heat resistance, even when the film is made thinner.SOLUTION: An electrical insulation film for motor contains polyaryletherketone and polyetherimide and has at least two glass transition temperatures between 150 and 250°C.SELECTED DRAWING: Figure 1

The invention discloses modified epoxy resin suitable for oven forming and a preparation method and application thereof, and belongs to the technical field of resin-based composite materials. The modified epoxy resin comprises the following raw materials in parts by mass: 45-60 parts of bisphenol A epoxy resin; 10 to 15 parts of glycidyl amine tetrafunctional epoxy resin; 15 to 20 parts of glycidyl ester type trifunctional epoxy resin; 10 to 16 parts of a toughening agent; 40 to 45 parts of 4, 4 '-diaminodiphenyl sulfone; the toughening agent is thermoplastic phenolphthalein polyaryletherketone resin or thermoplastic phenolphthalein polyethersulfone resin, and the obtained modified epoxy resin has similar viscosity-temperature characteristics, highest exothermic temperature and relatively long gelation time as MTM45-1 oven molding resin applied in airbus certification, and is suitable for being used in preparation of oven molding prepregs. And the obtained oven molded prepreg has good stability, and the difference of products in each batch is small.