427 results about "Polyaryletherketone" patented technology

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 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 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 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 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 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.

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.

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.

The invention relates to the technical field of polyaryletherketone composite materials, in particular to a modified carbon fiber reinforced polyaryletherketone composite material and a preparation method thereof.The preparation method comprises the following steps that S1, polybenzimidazole is attached to the surface of phosphorus-containing group functionalized carbon fiber; s2, in a protective atmosphere, preheating polyaryletherketone in a mold pressing mold, then uniformly laying the phosphorus-containing group functionalized carbon fibers treated in the step S1 on a preheated polyaryletherketone material, and carrying out stepped mold pressing forming, so as to obtain the modified carbon fiber reinforced polyaryletherketone composite material. The interface shear strength of the carbon fiber reinforced polyaryletherketone composite material is greatly improved through the action of surface modification of the phosphoric acid on the carbon fiber and interface transition of the polybenzimidazole.

The invention provides a polyether-ether-ketone composite membrane as well as a preparation method and application thereof, and belongs to the field of composite materials. The invention provides a polyether-ether-ketone composite membrane. The polyether-ether-ketone composite membrane comprises a coating, a first aramid fiber composite membrane and a second aramid fiber composite membrane, the coating is arranged on the surface of the first aramid fiber composite film; the first aramid fiber composite membrane comprises first polyether-ether-ketone and first deprotonated aramid fiber dispersed in the first polyether-ether-ketone; the second aramid fiber composite film comprises second polyether-ether-ketone, and graphene, multi-walled carbon nanotubes and second deprotonated aramid fibers which are dispersed in the second polyether-ether-ketone; the coating comprises soluble polyaryletherketone and mica sheets and / or boron nitride wrapped by the soluble polyaryletherketone; the coating is of a porous structure. The polyether-ether-ketone composite film disclosed by the invention has excellent radiation cooling performance, solar heating performance and heat-conducting performance.

The invention discloses composite resin for solvent-method prepreg production and a preparation method of the composite resin. The composite resin is prepared from the following raw materials: 35-145 parts of modified amorphous polyaryletherketone; 8 to 35 parts of polycarbonate; 0.5-6 parts of a modified inorganic nano material; the modified amorphous polyaryletherketone comprises high molecular weight modified amorphous polyaryletherketone and low molecular weight modified amorphous polyaryletherketone, and the mass ratio of the high molecular weight modified amorphous polyaryletherketone to the low molecular weight modified amorphous polyaryletherketone is (3-30): 1. A low-molecular-weight modified amorphous polyaryletherketone and high-molecular-weight modified amorphous polyaryletherketone composite system is adopted, the interfacial compatibility of polycarbonate and the modified amorphous polyaryletherketone is improved by utilizing the solubility of the low-molecular-weight modified amorphous polyaryletherketone and utilizing the high specific surface area and surface energy of the modified inorganic nano material, and the high-molecular-weight modified amorphous polyaryletherketone is obtained. The toughness and the impact resistance of the composite material are improved; the requirements of aerospace, new energy automobiles, rail transit and other parts on the high-strength and high-toughness composite material are met.

The invention belongs to the technical field of high polymer materials, and particularly relates to fluorine-containing polyaryletherketone, a preparation method and application thereof, a polymer film material and application thereof. The invention provides fluorine-containing polyaryletherketone which has a structural formula as shown in a formula I. X comprises a: b = (0-0.67): (0.33-1), and a is not equal to 0; n is the degree of polymerization; the crystallinity of the fluorine-containing polyaryletherketone is 15 to 25 percent. A fluorine-containing group with a low surface energy characteristic is introduced into the polyaryletherketone, so that the polyaryletherketone easily falls off in a friction environment and forms a transfer film, and the friction coefficient of the fluorine-containing polyaryletherketone is effectively reduced; meanwhile, the fluorine-containing polyaryletherketone has structural symmetry of molecular chain segments, so that the problem that the crystallinity is remarkably reduced due to the fact that more fluorine-containing groups are added into the polyaryletherketone can be solved, and the crystallinity and modulus of the fluorine-containing polyaryletherketone are effectively maintained; the fluorine-containing polyaryletherketone provided by the invention has a relatively low friction coefficient and also has good mechanical properties.

The invention discloses a preparation process of polyether-ether-ketone, and relates to the technical field of preparation of inorganic compounds. The preparation process comprises the following steps: reacting 4, 4 '-difluorobenzophenone, sodium carbonate and hydroquinone to generate polyether-ether-ketone, taking a polyaryletherketone block oligomer as an end-capping reagent, reacting 4, 4'-difluorobenzophenone with 4, 4 '-dimercaptodiphenyl sulfone, and then reacting with pentaerythritol phosphate to obtain the polyaryletherketone block oligomer. The thioester bond reversibly breaks at the polymerization temperature, exposed active sulfenyl reacts with hydroxyl at the tail end of the polyether-ether-ketone to form a more stable covalent bond, volatilization of the end-capping reagent is avoided, meanwhile, the initial decomposition temperature of the end-capped polyether-ether-ketone is increased, and the stability of the end-capping reagent is improved. The polyether-ether-ketone generated in the polyether-ether-ketone resin product is subjected to treatment procedures of crushing, organic solvent extraction, water washing, filtering, drying and the like, so that the product polyether-ether-ketone is obtained, less three wastes are generated, the solvent can be recycled, the atom economy is relatively high, and the preparation process of comprehensive utilization of resources is realized.

The invention discloses a high-performance polyaryletherketone fine synthesis method which structurally comprises the following steps: S1, raw material preparation: mixing a bisphenol monomer, aromatic dihalide, a salt-forming agent and a solvent according to a molar ratio of 1: (0.95-1.05), the amount of the salt-forming agent is 5-10% of the total material mass, and the solvent is phenol or toluene; s2, salt forming reaction: under the protection of nitrogen, heating the mixture to 130-150 DEG C, and stirring for 1-2 hours; s3, prepolymerization: raising the temperature to 180-220 DEG C, and reacting for 2-4 hours to generate a prepolymer; s4, main polymerization: continuously raising the temperature to 260-300 DEG C, and reacting for 1-3 hours to generate polyaryletherketone resin; and S5, post-treatment: cooling the product to room temperature, crushing, washing with deionized water and ethanol in sequence, and carrying out vacuum drying to obtain the target product. The invention belongs to the field of high polymer material synthesis, and particularly relates to a fine synthesis method of high-performance polyaryletherketone.

The invention relates to the technical field of high-performance pipe preparation, in particular to a heat-resistant Krah pipe and a preparation method thereof. The ultrahigh-density polyethylene composite material is prepared from ultrahigh-density polyethylene, polyaryletherketone, boron nitride-silicon carbide nanowire-graphene three-dimensional network filler, a maleic anhydride grafted ethylene-octene copolymer, organic montmorillonite, silane coupling agent modified carbon fibers, a composite antioxidant and a lubricant. The three-dimensional network filler is prepared by carrying out hydroxylation on graphene, modifying with a silane coupling agent, and reacting with aminated boron nitride nanosheets and silicon carbide nanowires under the action of a cross-linking agent; the modified carbon fiber is obtained by ultrasonic treatment of a silane coupling agent solution and high-temperature drying. Through the innovative formula and process, the heat deformation temperature of the Krah pipe exceeds 280 DEG C, the ring stiffness reaches 18 kN / m or above, the elongation at break reaches 300% or above, and the chemical resistance is improved; the gradient cooling process controls the longitudinal shrinkage rate to be smaller than 1%, the production cost is reduced, and the advantages of high temperature resistance, extrusion resistance, long service life and economical efficiency are achieved.

The invention discloses a composite ultrafiltration membrane based on polyethersulfone compounds and polyvinylidene fluoride as well as a preparation method and application of the composite ultrafiltration membrane, and is applicable to the technical field of ultrafiltration membranes. The ultrafiltration membrane is composed of a non-woven fabric matrix and a 30-200 micron coating layer, wherein the coating layer is formed by cross-linking sulfonated polyaryletherketone (SPEEK) or sulfonated polyethylene sulfone with polyvinylidene fluoride (PVDF) and a membrane pore regulating material. The preparation method comprises the following steps: dissolving 5-30 parts of 5-50g / L polyethersulfone compound with sulfonation degree, 100-300 parts of PVDF (polyvinylidene fluoride) and 2-60 parts of pore-foaming agent in a polar solvent, stirring to form a membrane casting solution, and carrying out phase inversion after coating. The membrane has remarkable hydrophilicity (the Zeta potential reaches-52.4 millivolts) and anti-pollution characteristics. Through electrostatic repulsion of a sulfonic acid group and a synergistic effect of a hydrophilic-hydrophobic microphase structure, high flux, long service life and efficient pollutant interception are realized.

The invention discloses a phenolphthalein polyaryletherketone nano composite material and a preparation method thereof, the composite material comprises the following components by mass: 50-70 wt% of a phenolphthalein polyaryletherketone (PEK) matrix, 10-30 wt% of a nano filler, 5-15 wt% of a flexibilizer, 1-5 wt% of an antioxidant, and 1-3 wt% of a processing aid, wherein all the components are physically mixed to form a uniformly dispersed integral structure, and the preparation method comprises the following steps: S1, pre-mixing the phenolphthalein polyaryletherketone matrix and the nano filler in a high-speed mixer; s2, adding the premixed materials into a double-screw extruder, and carrying out melt blending; s3, adding a toughening agent, an antioxidant and a processing aid in the extrusion process, and continuously mixing; and S4, cooling and pelletizing the extruded material to obtain the nano composite material particles. The invention belongs to the field of high polymer materials, and particularly relates to a phenolphthalein polyaryletherketone nanocomposite and a preparation method thereof.

The invention relates to the technical field of high-molecular polymers and surface chemical modification thereof, in particular to a low-dielectric-constant polyaryletherketone material and a preparation method thereof, and a flexible copper foil laminated structure and a preparation method thereof. The low-dielectric-constant polyaryletherketone material is obtained by taking a bisphenol monomer and difluorobenzophenone as reaction monomers and carrying out aromatic nucleophilic polycondensation reaction; wherein the bisphenol monomer is selected from a combination of C3-C8 normal or isomeric alkyl substituted hydroquinone and bisphenol containing at least one aryl group; the bisphenol containing at least one aryl group is selected from one or more of bisphenol AP, bisphenol BP, bisphenol Z and bisphenol fluorene; the low-dielectric-constant polyaryletherketone material forms a thin film, the surfactant treatment layer and the grafting layer are sequentially formed on the thin film, then the thin film is compounded with the copper foil, and the formed flexible copper foil laminated structure has high peel strength and low dielectric constant.

The invention provides a preparation method of polyaryletherketone resin for a 3D printing material, and relates to the technical field of high polymer materials, the polyaryletherketone resin is prepared by taking 4, 4-difluorobenzophenone, hydroquinone, biphenol and bisphenol fluorene as reaction raw materials, taking diphenyl sulfone as a solvent and taking carbonate of alkali metal as a catalyst through nucleophilic polycondensation reaction; the material has the advantages of high melting point, high glass transition temperature, high thermal decomposition temperature and low crystallization speed. According to the preparation method provided by the invention, a certain amount of bisphenol fluorene is added at the later stage of a polymerization reaction, so that on one hand, the introduction of a fluorenyl structure can further destroy the regularity of a molecular chain and reduce the crystallinity and the crystallization speed; on the other hand, the fluorenyl structure can be used for hindering chain segment movement, and the resin melting point can be increased.