94 results about "DIAPHENYLSULFONE" patented technology

The invention discloses a high-toughness biaxially oriented nylon film and a production method thereof. Comprising the following raw materials in parts by weight: 40-50 parts of copolymerized nylon resin, 10-20 parts of nylon 12, 15-25 parts of thermoplastic polyamide elastomer, 3-6 parts of nanofiller, 1-3 parts of coupling agent, 10-20 parts of reinforced fiber, 5-8 parts of additive, 3-7 parts of ethylene-methyl acrylate-glycidyl methacrylate terpolymer and 6-10 parts of modified cellulose nanocrystal. The invention relates to a flame-retardant polyamide resin, which is prepared from the following components in parts by weight: 2-4 parts of amino-terminated hyperbranched polyamide and 1-3 parts of 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The film is high in tensile strength, good in tear resistance and excellent in barrier property and low-temperature impact resistance.

The invention discloses a single-component high-heat-resistance type epoxy adhesive and a preparation method of the single-component high-heat-resistance type epoxy adhesive. The adhesive is prepared from the following components in parts by weight: 30 to 40 parts of N, N-4, 4 '-diphenylmethane bismaleimide; 50 parts of bisphenol F epoxy resin; 36.47 parts of 4, 4 '-diaminodiphenyl sulfone; 20 to 40 phr of phenyl glycidyl ether; 1 to 2 phr of two terminal type epoxy silicone oil; 4 to 6 phr of hydroxyl-terminated polyether sulfone; 10 to 20 phr of boron nitride, the surface of which is modified by gamma-glycidyl ether oxypropyl trimethoxy silane; and 1 to 3 phr of an adhesion promoter. According to the adhesive disclosed by the invention, the heat resistance, the mechanical property, the dimensional stability, the process adaptability and the like are synergistically improved, the use requirements of an aviation structural part on long-term service at 150-180 DEG C and an electronic packaging device on the condition of short-time reflow soldering at about 200 DEG C can be met, and the reliability of the adhesive in a high-temperature environment is remarkably improved.

The invention discloses a flame-retardant fiber and application thereof, the flame-retardant fiber comprises a flame-retardant fiber matrix and an organic-inorganic flame-retardant coating coated on the flame-retardant fiber matrix, and the organic-inorganic flame-retardant coating is formed by adopting an organic-inorganic phosphorus-containing flame retardant; according to the organic and inorganic phosphorus-containing flame retardant, hydroxylated carbon nanospheres are adopted as a core layer, a reaction product of bis (4-chlorphenyl) phosphoryl chloride and derivatives thereof and 4, 4 '-diaminodiphenyl sulfone and derivatives thereof is adopted as a shell layer, and the core layer and the shell layer are connected through acting force including covalent bonds and / or hydrogen bonds to form a core-shell structure; the flame-retardant fiber disclosed by the invention not only has an excellent flame-retardant effect, but also has better effects in other aspects such as antistatic property, spinnability, fiber system stability and the like, and is suitable for preparing flame-retardant textiles.

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 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 provides a polymer and a preparation method and application thereof, the preparation method comprises the following steps: 1, mixing dopa and / or dopamine with an organic solvent, and adding an organic alkali and a silane compound to obtain a first intermediate product; 2, mixing the first intermediate product with an organic solvent, adding a pH regulator, and carrying out a stirring reaction to obtain a second intermediate product; 3, mixing a diphenyl sulfone compound with an organic solvent, adding the second intermediate product, and stirring for reaction to obtain a third intermediate product; 4, mixing the third intermediate product with an organic solvent, and adding ammonium salt to obtain a fourth intermediate product; and 5, mixing the fourth intermediate product, bisphenol A and an organic solvent, adding an inorganic base, and carrying out a stirring reaction to obtain the polymer. When the polymer is used for preparing the alkaline water electrolysis composite membrane, the wettability of the composite membrane and electrolyte can be improved, the surface resistance of a diaphragm is reduced, and the electrolytic efficiency and mechanical stability of the diaphragm are improved.

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

The invention discloses corrosion-resistant waterproof aluminum foil glass fabric and a preparation method thereof, and belongs to the technical field of aluminum foil composite glass fabric. The corrosion-resistant waterproof aluminum foil glass fabric sequentially comprises a waterproof glass fabric, a high-temperature-resistant adhesive layer and an aluminum foil from bottom to top, the waterproof glass fabric is obtained by padding a waterproof finishing agent; the waterproof finishing agent is mainly prepared from the following raw material components: a silane coupling agent, hydroxyl-terminated fluorine-containing dihydric alcohol, isophorone diisocyanate and polycaprolactone; the high-temperature-resistant adhesive is mainly prepared from the following raw material components: 4, 4 '-oxydiphthalic anhydride, 4, 4-(hexafluoroisopropyl) bis (p-phenoxy) diphenylamine, 3, 3'-diaminodiphenyl sulfone, 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane, 4-amino-2-hydroxybenzaldehyde and o-phenylenediamine, and the high-temperature-resistant adhesive is prepared from the following raw material components: 4, 4 '-oxydiphthalic anhydride, 4, 4-(hexafluoroisopropyl) bis (p-phenoxy) diphenylamine, 4, 4-(hexafluoroisopropyl) bis (p-phenoxy) diphenylamine, 3, 3'-diaminodiphenyl sulfone, 1, 3-bis (3-aminopropyl) The corrosion-resistant waterproof aluminum foil glass fiber cloth prepared by the invention is relatively good in high temperature resistance, corrosion resistance and waterproofness.

The invention relates to the field of application of dielectric energy storage materials, and discloses application of a polyimide film in a dielectric energy storage material. The polyimide is prepared by copolymerizing bis [4-(4-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4'-(hexafluoroisopropene) diphthalic anhydride, or copolymerizing bis [4-(3-aminophenoxy) phenyl] sulfone and 4, 4 '-(hexafluoroisopropene) diphthalic anhydride. Ether bonds are introduced to two sides of diphenyl sulfone to destroy a continuous conjugated structure between an imide ring and diphenyl sulfone, hexafluoroisopropylene with high electronegativity is introduced into a dianhydride unit, and high-temperature insulativity is improved through interaction of the three. When the prepared polyimide film is used as a dielectric medium energy storage material, the high-temperature insulation property is improved while the heat resistance and the relatively high dielectric constant are maintained, so that the energy storage property of a capacitor is improved. The discharge energy density of 7.25 J / cm < 3 > and 4.79 J / cm < 3 > is realized at 200 DEG C and 250 DEG C respectively, and the efficiency is greater than 90%.

The invention belongs to the field of polyamide products, and discloses cooking-resistant polyamide as well as a preparation method and application thereof. The polyamide is formed by polymerizing the following components: X is alicyclic diamine 3, 3 '-dimethyl-4, 4-diamino dicyclohexylmethane or a derivative of the alicyclic diamine 3, 3'-dimethyl-4, 4-diamino dicyclohexylmethane with a substituent group on a cyclohexyl group; according to the present invention, Y is 4, 4 '-diaminodiphenyl sulfone or a derivative having a substituent group on the benzene ring thereof, and Z is aliphatic diacid.Compared with the traditional long-chain nylon and alicyclic nylon such as TR90, the polyamide PA XZ / YZ and the composition thereof have advantages of high glass transition temperature, high temperature resistance, high boiling resistance, low water absorption, and high toughness.

The invention belongs to a resin fiber layered product, and particularly relates to a light-weight high-warm-keeping down jacket fabric and a preparation method of the light-weight high-warm-keeping down jacket fabric. The preparation method comprises the following steps: preparing a modifier from 4, 4 '-diaminodiphenyl sulfone and phenylphosphoryl dichloride as raw materials, mixing the modifier with caprolactam, carrying out a polymerization reaction, carrying out melt spinning and weaving to obtain a modified nylon base cloth layer, forming an electrospun layer on the modified nylon base cloth layer through emulsion electrostatic spinning, and finally carrying out vacuum freeze drying to obtain the down jacket fabric. The light and thin performance and high warm keeping performance of the fabric can be guaranteed, and the breaking strength can be improved.

The application provides a preparation process of high-strength elastic electrical insulating adhesive tape, the insulating adhesive tape comprises a base layer and a glue layer, the glue layer comprises the following raw materials in parts by weight: rosin resin 30-60 parts, shellac resin 40-50 parts, polyurethane resin 40-60 parts, butyl rubber 63-85 parts, cis-butadiene rubber 35-40 parts, diaminodiphenyl sulfone 2-4 parts, nano ceramic powder 3-5 parts, carbon black 1-2 parts, flame retardant 2-4 parts and plasticizer 1-2 parts; the preparation method of the insulating adhesive tape is as follows: mixing rosin resin, polyurethane resin and butyl rubber to obtain a first mixture, mixing the first mixture to obtain a first mixing product, mixing shellac resin, cis-butadiene rubber and nano ceramic powder to obtain a second mixture, mixing the second mixture to obtain a second mixing product, finally mixing the first mixing product and the second mixing product to perform re-mixing, and adding diaminodiphenyl sulfone, carbon black, flame retardant and plasticizer at the same time, so that the insulating adhesive tape prepared finally has good toughness, is not easy to break and can bear a larger external force, and the safety performance of the product is improved.

The invention relates to a preparation method of a high-performance imidazolyl polyionic liquid membrane, and belongs to the technical field of ionic membranes. The method comprises the following steps: by taking N-methyl pyrrolidone as a solvent, reacting 2-phenylbenzimidazole or 2, 4, 5-triphenylimidazole with 4, 4-difluorodiphenyl sulfone, 1, 4-dibromobenzene, 4, 4-dibromodiphenyl or 4, 4-dibromodiphenyl terphenyl in a hydrothermal reaction kettle, washing and drying to obtain a product I; under the catalysis of super organic acid, reacting the product I with biphenyl or p-terphenyl and N-methyl-4-piperidone, washing and drying; adding methyl iodide in an alkaline environment for reaction, and washing and drying to obtain polyion liquid; and dissolving in dimethyl sulfoxide, coating on a glass plate, and drying to prepare the film. The polyionic liquid membrane prepared by the method has more ionic sites, and the ionic conductivity is remarkably improved. Tests show that the stability of the membrane is almost unchanged after 1500 hours under the conditions of 80 DEG C and 1M KOH, the wet mechanical property reaches 60 MPa or above, and the membrane has high chemical and mechanical stability and wide application prospects.

The present invention provides a flexible and transparent polyimide film and a preparation method thereof, relating to the technical field of polymer materials. The polyimide film is prepared by the polymerization reaction of diamine and dianhydride; the diamine includes a first diamine and a second diamine; the first diamine is an aromatic diamine containing a rigid group; the second diamine is a diamine containing imidazole; the dianhydride includes a first dianhydride and a second dianhydride; the first dianhydride is selected from at least one of 3,3,4,4-diphenylsulfone tetracarboxylic dianhydride, 4,4'-biphenyltetracarboxylic dianhydride and benzophenone tetracarboxylic dianhydride; the second dianhydride is selected from 2,2'-(1,4-piperazinediyl)-disuccinic anhydride or 2R,5R,7S,10S-naphthalenetetracarboxylic dianhydride. The polyimide film prepared by the present invention significantly improves the optical properties while obtaining better heat resistance and mechanical properties.

The invention relates to a preparation method of furan-containing polybenzimidazole (PBI), in particular to a method for preparing furan-containing polybenzimidazole (PBI) by using bio-based furandicarboxylic acid (FDCA) as a diacid monomer instead of a traditional petroleum-based monomer and by using specific aromatic tetramine including 3, 3 ', 5'-tetracarboxylic acid (FDCA) as a diacid monomer. The novel polybenzimidazole polymer is synthesized by the following steps of: reacting 3, 3 '-diaminobenzidine, 3, 3', 4, 4 '-tetraamino diphenyl ether or 3, 3', 4, 4 '-tetraamino diphenyl sulfone at 150-160 DEG C for 2-4 hours under the protection of nitrogen in the presence of an ionic liquid solvent and a dehydrating agent phosphorus pentoxide, and reacting at 165-215 DEG C for 4-30 hours. The invention solves the problems of high processing difficulty, high cost and fossil raw material dependence of the traditional petroleum-based PBI.

The invention discloses an anti-eccentric-wear cladding coating material as well as a preparation method and application thereof. The anti-eccentric-wear cladding coating material is prepared from the following raw materials in parts by weight: 15 to 22 parts of modified novolac epoxy resin, 8 to 15 parts of polyether-ether-ketone, 10 to 18 parts of nano tungsten carbide, 0.5 to 2 parts of graphene oxide, 5 to 8 parts of polyamide-imide, 1 to 3 parts of silane coupling agent, 2 to 5 parts of nano titanium dioxide, 3 to 6 parts of diaminodiphenyl sulfone, 5 to 10 parts of spherical aluminum powder, 1 to 3 parts of molybdenum disulfide, 0.5 to 1 part of defoaming agent and 0.3 to 0.8 part of flatting agent. Through selection of the raw materials, the anti-eccentric-wear cladding coating material has the performance of high hardness, high toughness and excellent interface bonding force, and can meet the requirement that the friction life is larger than or equal to 5 million times under the complex well condition.

The invention discloses a resin-based anti-corrosion plugging agent for oil-water well casing plugging and a preparation method thereof, and relates to the technical field of plugging agent preparation, and the resin-based anti-corrosion plugging agent comprises the following raw materials: modified bisphenol A epoxy resin, amino-terminated nitrile rubber, plugging filler, an anti-corrosion auxiliary agent, modified organic bentonite, 4, 4 '-diphenyl-1, 3-pentanediol monoisobutyrate, an anti-corrosion the component A is prepared from 4, 4 '-diaminodiphenyl sulfone, 2-methylimidazole and gamma-glycidyl ether oxypropyl trimethoxy silane; according to the plugging agent, the modified organic bentonite is added, after the modified organic bentonite is subjected to biquaternary ammonium salt intercalation, nano hybridization and hydrophobic silane end-capping modification, the interlayer spacing is greatly increased, the layered structure is complete and free of collapse at the high temperature of 250 DEG C, the thixotropic property is not obviously attenuated, the high thixotropic index can be achieved with the low dosage, and the plugging agent has the characteristics of low shear flow and high shear viscosity, is easy to pump during construction, and has the good plugging effect. After standing, rapid thickening is performed to prevent underground fluid channeling; the modified bisphenol A epoxy resin has excellent hydrophobicity and oil solubility, has high compatibility with modified bisphenol A epoxy resin, and can be uniformly dispersed without agglomeration after being stirred at a low speed.

The application discloses a display screen functional film and a preparation method and application thereof, and belongs to the technical field of functional film materials. The method comprises the following steps: S1, SiO2 nanoparticles, ethanol, acetonitrile, polyvinylpyrrolidone and deionized water are mixed, and ultrasonic dispersion is carried out to obtain a dispersion liquid; tetrabutyl titanate is slowly added into the dispersion liquid, heating and stirring are carried out, and washing, drying and annealing are carried out to obtain SiO2@TiO2 particles; the SiO2@TiO2 particles, an epoxy-containing silane coupling agent and methanol are mixed, heating and stirring are carried out, and washing, drying and annealing are carried out to obtain modified SiO2@TiO2 particles. S2, the modified SiO2@TiO2 particles, 4,4'-diamino diphenyl sulfone and a leveling agent are dispersed in methyl isobutyl ketone, mixing is carried out, ultrasonic defoaming is carried out, and a coating is obtained; the coating is uniformly coated on an optical film, and the functional film with good light transmission, ultraviolet resistance and hydrophobicity is obtained after temperature rising and drying.

The invention relates to a preparation method of a hollow fiber gas separation membrane for decarburization of oilfield associated gas, and belongs to the technical field of separation membranes, and the preparation method specifically comprises the following steps: mixing 4, 4 '-diaminodiphenyl sulfone with diamine under the protection of argon, and then adding a solvent N, N-dimethylacetamide; after diamine is completely dissolved, dianhydride is added in batches until a polyamide acid prepolymer solution is obtained through stirring; adding a dehydrating agent and a catalyst into the polyamide acid prepolymer solution to generate a polyimide solution; the preparation method comprises the following steps: mixing dianhydride with sulfuryl-containing diamine, then adding the sulfuryl-containing diamine into a reaction solution, then pouring the reaction solution into a precipitant methanol to separate out a polymer, washing and drying to obtain a polyimide solid, then preparing the polyimide solid into a membrane casting solution, and carrying out a spinning process to obtain the hollow fiber gas separation membrane. And the hollow fiber gas separation membrane is prepared by spinning, so that the molecular chain structure is optimized, and the comprehensive performance of the material is improved.

The invention relates to the field of cathode electrophoresis emulsions, and particularly discloses a high-temperature-resistant cathode electrophoresis emulsion and a preparation method thereof. The emulsion is prepared from the following raw materials: amine modified epoxy resin and blocked isocyanate, wherein the amine modified epoxy resin is prepared from the following raw materials: DOPO type modified novolac epoxy resin, bisphenol A type epoxy resin E-20, bisphenol S, nonyl phenol, monobasic secondary amine and diaminodiphenyl sulfone. The cathode electrophoresis emulsion provided by the invention has excellent high-temperature resistance, and the cathode electrophoresis paint prepared by matching the cathode electrophoresis emulsion with corresponding cathode electrophoresis paint color paste components has obvious high-temperature resistance advantage compared with the conventional cathode electrophoresis paint after the obtained coating is dried to form a film; meanwhile, various properties such as good chemical stability, deformation stability and the like are also realized.

The invention discloses a purification method of a 4, 4 '-dichlorodiphenyl sulfone mixture, and belongs to the technical field of organic synthesis, 2, 4'-dichlorodiphenyl sulfone generates 2-hydroxy-4 '-chlorodiphenyl sulfone sodium salt under an alkaline condition by controlling reaction conditions, and then the 2-hydroxy-4'-chlorodiphenyl sulfone sodium salt is removed by a water washing method to realize purification of 4, 4 '-dichlorodiphenyl sulfone.

The invention discloses a modified nylon composite flame retardant and a preparation method thereof, and the preparation method comprises the following steps: mixing agmatine and sulfuric acid according to a ratio of 1: 1, adding ethanol, heating and stirring, and carrying out rotary evaporation to remove a solvent to obtain agmatine sulfate; then, 4, 4 '-diaminodiphenyl sulfone and phenylphosphoryl dichloride are dissolved in acetonitrile, and after a reaction, a phosphorus-sulfur composite flame retardant is obtained; then mixing brominated polystyrene and antimony trioxide according to a ratio of 3: 1, adding a dimethyl sulfoxide solvent, and stirring to obtain a bromine-antimony composite flame retardant; and finally, mixing all the components with the long glass fiber, performing high-speed stirring and twin-screw extrusion melt blending, and performing cooling and pelletizing molding. The agmatine sulfate can provide gas-phase flame retardance, the phosphorus-sulfur composite flame retardant generates a carbon layer to enhance solid-phase flame retardance, and the bromine-antimony composite flame retardant synergistically delays flame propagation, so that the flame retardance stability and durability of the nylon composite flame retardant are improved, and the long-term use safety in a high-temperature environment is ensured.

The invention discloses a high-temperature-resistant dielectric film as well as a preparation method and application thereof, and belongs to the technical field of dielectric films. The preparation method comprises the following steps: dissolving 4, 4 '-diaminodiphenyl sulfone and 3, 3'-diaminodiphenyl sulfone in N, N '-dimethylacetamide under the protection of nitrogen, cooling to 0-10 DEG C after the diaminodiphenyl sulfone is completely dissolved, and then adding paraphthaloyl chloride for polymerization under the protection of nitrogen; after the polymerization is completed, ammonia gas is introduced to neutralize a byproduct hydrogen chloride generated by the reaction, and after the neutralization is completed, insoluble ammonium chloride generated by the neutralization reaction is removed through filtration to obtain a polysulfonamide polymer; and casting the polysulfonamide polymer to form the membrane. Polysulfonamide has intermolecular hydrogen bonds which polyimide and polyetherimide do not have, so that the film prepared from polysulfonamide is more stable under the action of an electric field and has higher breakdown strength, and the discharge energy density of the film is obviously superior to that of a PI film and a PEI film under the same charge-discharge efficiency; the material has a wide application prospect in the fields of dielectric energy storage capacitors and electrical insulation.

The invention discloses polyethersulfone with low yellowness and narrow molecular weight distribution and a preparation method thereof, and relates to the technical field of polyethersulfone. According to the technical scheme, the preparation method comprises the following steps: adding bisphenol S, 4, 4 '-dichlorodiphenyl sulfone, sodium dodecyl sulfate, a salt-forming agent and a water diversion agent into N-methyl pyrrolidone, introducing protective gas, heating to 120-150 DEG C, and carrying out heat preservation reaction for 1-3 hours; when the water extraction amount reaches a theoretical value, continuously heating to 160-200 DEG C, and keeping the temperature for 2-5 hours to obtain a polyethersulfone resin polymer solution; cooling to 60-150 DEG C, and then carrying out an end-capping reaction for 1-4 hours to obtain an end-capped polyethersulfone resin polymer solution; and cooling to 60-80 DEG C, filtering, adding an organic acid, adjusting the pH value to 4.5-5, stirring, and after sodium dodecyl sulfate is completely separated out, carrying out post-treatment to obtain the low-yellowness narrow-molecular-weight-distribution polyethersulfone resin. The polyethersulfone is low in small molecule content and narrow in molecular weight distribution, and application of the polyethersulfone in downstream injection molding products is facilitated.

A modified polyurea coating and its preparation method, which relates to the technical field of coatings, includes component A and component B; Component A includes the following raw material components: functional polyurea, meso-tetramethyl-meso-tetra(p-aminophenyl)calix[4]pyrrole, initiator, auxiliary agent, catalyst A, solvent; Component B includes the following raw material components: isocyanatoethyl methacrylate, cage-like octasilsesquioxane containing epoxy groups and vinyl groups, 2,4,6-trivinylcyclotriboroxane, N-vinyl oxazolidinone; The functional polyurea includes the structural units introduced by the following monomers: diisocyanate polyethylene glycol, 2,2-bis[4-(4-aminophenoxy)phenyl]-1,1,1,3,3,3-hexafluoropropane, 3,3'-diamino-4,4'-difluorodiphenyl sulfone, 1,4-diamino-2,3-dicyanoanthraquinone. This coating has good bonding performance, sufficient mechanical and thermal properties, and excellent weather resistance.

The invention discloses a PEEK composite material with biocompatibility and a preparation method thereof, and belongs to the technical field of PEEK composite materials. The PEEK composite material is prepared from the following raw materials in parts by mass: 100 parts of sulfonated polyether ether ketone, 20 to 40 parts of furan heterocyclic polyarylethersulfone ketone and 5 to 15 parts of Ti3C2TX-SF modified carbon fibers, the furan heterocyclic polyarylether sulphone ketone is a product synthesized through a reaction of 6-(4-hydroxy-3-methoxyphenyl) pyridazine-3 (2H)-ketone, 4, 4 '-difluorodiphenyl sulfone and furyl difluorodiphenyl ketone. The Ti3C2TX-SF modified carbon fiber is obtained by dipping a polydopamine modified carbon fiber in a silk fibroin modified Ti3C2TX material dispersion liquid for surface modification treatment. According to the antibacterial PEEK composite material disclosed by the invention, sulfonated polyetheretherketone is taken as a matrix, and furan heterocyclic polyarylethersulfone ketone and Ti3C2TX-SF modified carbon fibers are added, so that the PEEK composite material has excellent antibacterial performance.

The invention discloses an electromagnetic shielding heat dissipation film and a preparation method and application thereof, and relates to the technical field of heat dissipation films, and the electromagnetic shielding heat dissipation film sequentially comprises a matrix layer, a three-dimensional heat conduction network layer, a gradient electromagnetic shielding layer and a function enhancement layer from top to bottom; the function enhancement layer is prepared from the following raw materials in parts by weight: 4 to 6 parts of MXene nanosheets, 3 to 5 parts of boron nitride nanotubes, 100 parts of epoxy resin and 5 to 8 parts of 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The heat dissipation film has efficient electromagnetic wave shielding conduction performance, good heat dissipation performance and good mechanical and stability, and the preparation process is simple and easy to implement.

The invention discloses polyether sulfone and a preparation method thereof, and relates to the technical field of resin. According to the technical scheme, bisphenol S is partially replaced by biphenol, 4, 4 '-difluorodiphenyl sulfone is partially replaced by 4, 4'-dichlorodiphenyl sulfone to serve as an active compensation monomer, nano calcium carbonate serves as a trapping agent and a conditioning agent, and polyether sulfone is synthesized through efficient polycondensation in an N-methyl pyrrolidone solvent system in a staged heating and staged extraction and supplementation mode. And then carrying out dilution cooling, end sealing, dilution, adsorption treatment, filtration, crushing, graded washing and drying to obtain the polyether sulfone. The polyethersulfone prepared by the method has better thermal performance, mechanical performance and processability on the premise of not influencing the performance of the polyethersulfone, is better applied to the field of membranes, and can also be widely applied to the fields with high added values, such as high-load and high-temperature-resistant components.

The application discloses a method for synthesizing polyether sulfone resin, and specifically comprises the following steps: adding solvent cyclobutane sulfone into a reactor provided with a nitrogen gas pipe, a gas distributor, mechanical stirring and a water separation condensing device, starting stirring, and adding monomer 4,4'-dichlorodiphenyl sulfone, bisphenol S and a salifying agent; after nitrogen replacement, the nitrogen flow is adjusted, and the temperature is raised to 210-240 DEG C; the gas distributor is used for distributing nitrogen, the system is continuously bubbled by nitrogen flow for dehydration, and the reaction is carried out for 3-5 hours; the nitrogen is turned off, the polymerized mucus is poured into water for precipitation, and the polyether sulfone resin is obtained through the steps of crushing, washing and drying. The application uses high-purity nitrogen flow for dehydration, thus avoiding the addition of flammable and toxic organic water-carrying agents, improving operation safety, not polluting products, and being simple in operation and short in reaction period.

The invention relates to the technical field of coatings, and discloses a high-temperature-resistant coating and a preparation method thereof.The preparation method comprises the steps that epoxy resin, filler, a dispersing agent and a defoaming agent are added into a solvent, a curing agent is added after stirring, and the high-temperature-resistant coating is obtained. The curing agent is composed of a polyamide curing agent and UPy diaminodiphenyl sulfone; the UPy structure forms a stable quadruple hydrogen bond action on an epoxy resin molecular chain bond, the crosslinking density of the epoxy resin is improved, and when the epoxy resin is stressed, the quadruple hydrogen bond can absorb energy to break, consume stress and transfer energy, so that a coating cured product is not damaged by the stress and has a very good toughening effect; the toughness of the paint film is improved. A heat-resistant diphenyl sulfone structure is introduced into an epoxy resin molecular chain, so that the high-temperature resistance of the coating is improved, and the coating has higher thermal decomposition temperature.