280 results about "Phenyl sulfide" patented technology

The invention relates to the technical field of process control, in particular to a polyphenylene sulfide polymerizer temperature self-adaptive control method, which comprises the following steps: acquiring melt viscosity, heat release power and residence time deviation of a polymerizer in real time, and constructing a normalized multi-dimensional time sequence input vector by using a sliding window technology; and then, through fusing a weight control model of a long short-term memory network and an attention mechanism, combining static working condition characteristics, and analyzing and outputting adaptive weight coefficients for different deviation dimensions in real time. Meanwhile, based on the shear heat effect and the reaction accumulation effect, specific temperature compensation components for the inlet of the heating medium jacket are calculated, and independent amplitude limiting processing is carried out on all the components. And finally, a target set temperature is synthesized through weighting, and an execution mechanism is driven to act accurately by utilizing cascade PID control and a valve flow characteristic inverse mapping model. According to the invention, through deep fusion and mechanism compensation, accurate steady-state control of the polymerization reaction is realized.

The invention relates to an electromagnetic shielding resistant PPS alloy material containing modified carbon nanotubes, and belongs to the technical field of polymer composite materials. The PPS alloy material comprises 70-85 parts of polyphenylene sulfide, 5-15 parts of polyether-ether-ketone or a liquid crystal polymer, 3-8 parts of carbon nanotubes subjected to acyl chloride-amido double-step modification and 5-12 parts of carbon fibers subjected to oxidation treatment, and the carbon fibers subjected to oxidation treatment are covalently connected with the carbon nanotubes subjected to double-step modification. 0.5 to 1.5 parts of a coupling agent, 0.3 to 0.8 part of an antioxidant and 0.2 to 0.6 part of a lubricant. According to the invention, the carbon nanotubes are subjected to surface grafting group modification, and the carbon fibers are subjected to surface oxidation treatment, so that the technical problems that the carbon nanotubes are easy to agglomerate, the interface between the carbon fibers and the matrix is weak, and the shielding efficiency and the mechanical property are difficult to consider are solved, and the carbon nanotubes and the PPS matrix form a composite reinforced structure; the comprehensive improvement of the material in the aspects of electromagnetic shielding, mechanical property, thermal stability and the like is realized.

The invention relates to the technical field of polymer composite materials, in particular to a carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material and a preparation method thereof.The carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material is prepared from, by weight, 40-55 parts of nylon 66, 30-45 parts of polyphenylene sulfide, 15-30 parts of carbon fibers, 5-6 parts of compatilizer, 0.8-1.2 parts of antioxidant and 3-4 parts of flexibilizer, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 1.2-1.5%, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 0.8-1.0%, and the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1: 1. The composite material prepared by the invention is suitable for medium-high temperature scenes, not only solves the problems of insufficient high temperature resistance and poor mechanical properties of traditional materials, but also has good processability and environmental tolerance.

The utility model discloses a polyphenylene sulfide plastic particle detection device, which belongs to the technical field of polyphenylene sulfide plastic particle processing, and comprises a bottom plate and a plurality of support components arranged on the bottom plate, one support component is provided with a motor connecting component, the motor connecting component is provided with a rotating motor, and the rotating motor is provided with a rotating shaft. Rotating plates are rotationally mounted at the output end of the rotating motor and on the other supporting assembly, the two rotating plates are connected through a guide column, a screening box is slidably mounted on the guide column, a screening net is mounted on the screening box, and one side of the screening box is connected with one rotating plate through a screening spring. According to the polyphenylene sulfide plastic particle screening device, the rotating motor is arranged, the rotating motor is started to drive the screening box to turn over, unqualified polyphenylene sulfide plastic particles left in the screening box can be conveniently poured into the storage box, the storage box is detached in a sliding mode, and the polyphenylene sulfide plastic particles can be conveniently taken out.

The invention belongs to the field of high polymer material synthesis, and provides a method for preparing polyphenylene sulfide from high-purity p-dichlorobenzene, which adopts the whole process design of pre-construction of a composite sulfur source intermediate, regulation and control of an end group controllable oligomerization polyphenylene sulfide intermediate, segmented polymerization of the high-purity p-dichlorobenzene and precise dehydration-washing-drying. The ultra-low impurity level of 0.05-0.25 wt% of burning residues of the polyphenylene sulfide product, the sodium ion content of 10-200 mg / kg and the chloride ion content of 10-500 mg / kg is achieved, and meanwhile the high-performance stability of the melting point of 270-300 DEG C, the gel fraction of 92-99 wt% and the water content of 0.01-0.20 wt% is kept. The problems of deep removal of inorganic ions and ash content, balance of gel fraction and processability and control of residual solvents in the traditional polyphenylene sulfide preparation process are solved, and the method has wide application value in the fields of high-performance engineering plastics, special fibers, electronic packaging materials and the like.

The invention discloses a high-rigidity flame-retardant high-CTI polyphenylene sulfide material and a preparation method thereof, and relates to the technical field of polyphenylene sulfide. Comprising the following steps: S1, adding glass fibers and a silane coupling agent into an ethanol water solution, and stirring for reaction to obtain modified glass fibers; s2, uniformly mixing polyphenylene sulfide resin powder, modified glass fibers, modified calcium sulfate whiskers, modified hyperbranched polyphenylene sulfide, a processing aid and an antioxidant, and performing melt extrusion granulation to obtain the high-rigidity flame-retardant high-CTI polyphenylene sulfide material, according to the invention, the polyphenylene sulfide resin powder is used as a matrix, the calcium sulfate whisker modified by in-situ polymerization of glass fiber and nylon is introduced as a filler for synergistic enhancement, and the modified hyperbranched polyphenylene sulfide is added as reinforcing and toughening resin, so that the polyphenylene sulfide material has rigidity and toughness, and meanwhile, the material has excellent stability and flame retardancy, and is suitable for industrial production. The formation of a carbonization passage can be effectively inhibited, and the tracking index of electric leakage is obviously improved.

The invention particularly discloses a preparation method and application of a composite ion exchange membrane. The composite ion exchange membrane is prepared from the following components in parts by weight: 95 to 110 parts of perfluorinated sulfonic acid resin, 5 to 8 parts of functionalized multi-walled carbon nanotubes, 10 to 15 parts of phosphotungstic acid, 1 to 1.8 parts of cerium-tannin complex, 12 to 20 parts of polyphenylene sulfide enhanced net, 30 to 40 parts of sulfonated polyether ether ketone solution, 3 to 5 parts of MXene-silicotungstic acid compound and 1 to 3 parts of polyethyleneimine cross-linking agent. The preparation method comprises the following steps: preparing the functionalized multi-walled carbon nanotube and the cerium-tannin complex; blending the perfluorinated sulfonic acid resin and the functional filler to prepare a membrane casting solution, and coating to form a membrane; a PPS reinforced net and an SPEEK solution are subjected to composite reinforcement, the PPS reinforced net and the SPEEK solution are subjected to PEI crosslinking and then superposed with the membrane, an MXene-silicotungstic acid compound is sprayed on the surface, and the composite ion exchange membrane is obtained through hot pressing and acid activation, has high proton conductivity and excellent mechanical strength and chemical stability and can be applied to a proton exchange membrane electrolytic cell and an all-vanadium redox flow battery.

The invention provides a synthesis method of a thioether ligand and a palladium-catalyzed 2-aryl indole compound, and designs an application of the biphenyl thioether ligand and a palladium catalyst in preparation of the 2-aryl indole compound. Indole and arylboronic acid are subjected to a reaction under the action of a palladium catalyst and a biphenyl sulfide ligand, and the structural formula of the biphenyl sulfide ligand is shown in the specification. Ar is phenyl, furyl, thienyl, naphthyl or phenyl substituted by one or more substituent groups; r1 is methyl, methoxyl, fluorine atom, chlorine atom, bromine atom or methyl ester group; r2 is the same or different and is methyl, ethyl, isopropyl, isobutyl, cyclohexyl, benzyl, n-butyl or n-hexyl; r3 is alkoxy, alkylthio, substituted amino or halogen; the palladium catalyst is a divalent palladium compound.

The application belongs to the technical field of polymer composites, and discloses a low linear expansion coefficient polyphenylene sulfide composite material, a preparation method and application thereof. The composite material comprises 20-60 parts of polyphenylene sulfide resin, 40-80 parts of a low expansion filler system, 0.5-5 parts of a coupling agent, 0.1-1 part of a lubricant and 0.1-1 part of a toning agent. The low expansion filler system is at least two of a lamellar structure filler, a fibrous structure filler and a nano-sized filler. The polyphenylene sulfide composite material obtained has a low linear expansion coefficient while maintaining good mechanical properties through the limiting effect of the lamellar structure filler on the thermal expansion of the resin matrix, the reinforcing effect of the fibrous structure filler on the strength and modulus of the material and the improvement effect of the nano-sized filler on the filling structure and the interface state. The polyphenylene sulfide composite material can be applied to the fields of precision instruments, electronic packaging, electronics and electrical appliances, automobiles and aerospace, etc. which have high requirements for thermal dimensional stability.

The application relates to the technical field of materials, and discloses a wear-resistant light-soft PVC material and a preparation method thereof. The PVC material is prepared through mixing and foaming forming processes by taking PVC resin as a base material and taking wear-resistant additive modified materials and the like as additives. The wear-resistant additive modified material is prepared by firmly loading nano magnesium oxide on the surface of polyphenylene sulfide fibers. The addition of the wear-resistant additive modified material can reduce the friction coefficient, reduce the direct wear of the matrix, compensate for the problem of strength reduction of the foaming material caused by the cell structure, and endow the material with broad-spectrum antibacterial properties. Therefore, the application can realize low density, soft hand feeling and good resilience of the PVC material, and significantly improve the wear resistance, scratch resistance and antibacterial properties of the material, and overcome the multiple technical problems that the soft foaming PVC material in the prior art is difficult to be light and soft and wear-resistant.

The application discloses a preparation method of a key intermediate of dapagliflozin, and belongs to the technical field of preparation of medical intermediates. The preparation method of the key intermediate of dapagliflozin comprises the following steps: 1, 1-ethoxy-4-methylbenzene is prepared by using p-cresol, sodium hydroxide and diethyl sulfate; 2, (4-ethoxybenzyl) phenyl sulfide is prepared by using 1-ethoxy-4-methylbenzene, thiophenol, a palladium catalyst, an alkali and an oxidant; 3, 1-benzyl-4-ethoxybenzene is prepared by using (4-ethoxybenzyl) phenyl sulfide under a hydrogen atmosphere; 4, 4-ethoxy-2'-chlorobenzhydrol is prepared by carrying out chlorination reaction on 1-benzyl-4-ethoxybenzene; and 5, 5-bromo-2-chloro-4'-ethoxybenzhydrol is prepared by carrying out bromination reaction on 4-ethoxy-2'-chlorobenzhydrol. The yield and purity of 5-bromo-2-chloro-4'-ethoxybenzhydrol prepared by the method are higher, the process is safer, and the production cost is reduced.

The invention discloses a method for preparing an alkaline water electrolysis composite diaphragm and the composite diaphragm, and belongs to the technical field of diaphragm preparation, in the method for preparing the alkaline water electrolysis composite diaphragm, the method comprises the steps that 1, a polyphenylene sulfide woven mesh is soaked in a milky white membrane casting solution and taken out after being soaked for a preset first time, and then the polyphenylene sulfide woven mesh is obtained; the impregnated polyphenylene sulfide woven mesh is generated; (2) scraping the impregnated polyphenylene sulfide woven mesh by using a scraper at a preset interval to generate a liquid wet film; (3) putting the liquid wet film into a first coagulating bath, and coagulating under a first coagulating condition to generate a formed white film; and 4) putting the formed white film into a second coagulating bath, and coagulating under a second coagulating condition to generate the alkaline water electrolysis composite diaphragm. The internal microstructure of the diaphragm is regulated and controlled by adjusting the components of the organic coagulating bath, and the prepared composite diaphragm has the characteristics of low surface resistance and excellent mechanical property.

The application relates to a modified polyphenylene sulfide resin and a preparation method thereof, and relates to the field of high polymer materials. The modified polyphenylene sulfide resin comprises the following raw materials in parts by weight: 37.4-67.8 parts of polyphenylene sulfide resin; 30-50 parts of glass fiber; 2-10 parts of a toughening agent; 0.1-0.6 parts of an antioxidant; and 0.1-2 parts of a processing aid. The toughening agent is an ethylene-glycidyl methacrylate copolymer. The impact toughness of the polyphenylene sulfide resin is improved by compounding the glass fiber with the polyphenylene sulfide, the brittleness of the polyphenylene sulfide resin composite material is reduced, the flowability of the polyphenylene sulfide resin in the injection molding process is improved by adding the glass fiber, and the polyphenylene sulfide resin is easy to process and mold; the ethylene-glycidyl methacrylate copolymer is selected as the toughening agent, the compatibility of the glass fiber and the polyphenylene sulfide resin is enhanced, and the rigidity and toughness of the polyphenylene sulfide resin product are enhanced.

This application discloses a harmonica tube and a preparation method thereof, a liquid cooling plate, a battery, and an electric apparatus, where a material of the harmonica tube includes a polyphenylene sulfide composition, and the polyphenylene sulfide composition includes a polyphenylene sulfide resin and a toughening agent; the toughening agent includes a copolymer of an olefin and a glycidyl ester. By providing the polyphenylene sulfide composition as the material for the harmonica tube, this application facilitates reducing issues such as material breakage or poor extrusion flow during extrusion molding, enabling the formed harmonica tube to exhibit excellent mechanical strength, deformation resistance, corrosion resistance, heat resistance, heat dissipation, and creep resistance, lowering the risk of cracking under pressure during use, and enhancing production capacity and product quality.

The application discloses a kind of injection molding magnetic ferrite composite material and preparation method thereof, by following weight percentage component composition: modified ferrite magnetic powder 82%-90%, composite binder 7%-15%, coupling agent 0.3%-0.8%, lubricant 0.5%-1.2%, antioxidant 0.2%-0.5%, reinforcing agent 0.3%-1.0%;The composite binder is mixed by nylon 6, nylon 12 and polyphenylene sulfide according to weight ratio 2:1:0.5-1, the injection molding magnetic ferrite composite material and preparation method thereof, make composite material have good injection molding fluidity, can be prepared shape complex, size tiny magnetic component device, forming precision is high, without subsequent processing, further improve production efficiency, reduce production cost.

The present application relates to a kind of diaphragm and its preparation method and electric device.The diaphragm includes base film, and the base film includes opposite first surface and second surface along the thickness direction;The first surface is provided with first coating, and the first coating includes polycaprolactone, metal oxide catalyst and bismuth-tin eutectic alloy;The second surface is provided with second coating, and the second coating includes core-shell material, and the core-shell material includes inner core and polymer shell, and the inner core includes perfluoropolyether and azobisisobutyronitrile;The base film includes polyether ether ketone and polyphenylene sulfide.The diaphragm provided by the present application uses polyether ether ketone and polyphenylene sulfide as mixed base film, and the first coating and the second coating are differentially set, the diaphragm heat response is sensitive, effectively prevent the occurrence of thermal runaway, the safety performance of lithium ion battery is significantly improved, meanwhile, the energy density of battery has also been greatly improved, and the cycle performance of battery is good.

This invention discloses a method for preparing a fiber-reinforced polyphenylene sulfide (PPS) film, belonging to the field of high-performance film preparation. The preparation method includes the following steps: 1) combing PPS fibers into a web, and forming the web using the adhesion of a surface-soluble high-viscosity polymer and hot pressing; 2) preparing an adhesive solution by heating and dissolving PPS powder and a compound solvent; 3) preparing a PPS film through coating and hot pressing processes, and enhancing the thermal stability of the film through oxidation treatment. The fiber-reinforced PPS film prepared by this invention is used as a composite current collector support for lithium batteries.

The invention discloses a damp-heat-resistant flame-retardant polyether-ether-ketone modified material and a preparation method thereof, and relates to the technical field of high polymer material modification. The modified material is prepared from the following raw materials in parts by mass: 70 to 90 parts of polyether-ether-ketone, 5 to 15 parts of polyphenylene sulfide, 10 to 25 parts of self-crosslinking modified phosphorus-nitrogen flame retardant, 0.5 to 2.0 parts of hydrolysis-resistant stabilizer, 0.1 to 0.8 part of antioxidant and 0.2 to 1.0 part of lubricating dispersant, the self-crosslinking modified phosphorus-nitrogen flame retardant is prepared by introducing hydroxyl-containing polyhedral oligomeric silsesquioxane (POSS) and phosphonitrilic chloride trimer into the self-crosslinking modified phosphorus-nitrogen flame retardant and carrying out graft condensation on the hydroxyl-containing POSS and phosphonitrilic chloride trimer. According to the material, through cross-linking hybrid modification and interface synergistic regulation and control, hydrolysis and acid production of the flame retardant are inhibited by utilizing the large steric hindrance hydrophobic effect of POSS, matrix degradation is blocked, the compactness of a flame-retardant layer is enhanced by virtue of the ceramic-carbonization synergistic effect, and the problems that a traditional flame retardant is easy to decompose and is not resistant to damp and heat can be effectively solved; the mechanical strength retention rate and the flame-retardant reliability of the material after high-temperature and high-humidity aging are remarkably improved.

The invention discloses a method for detecting phenyl sulfide in rectification residual liquid of 2, 4-dichlorophenol through high performance liquid chromatography, and belongs to the technical field of chemical detection and analysis. The method comprises the following steps: dissolving a to-be-detected 2, 4-dichlorophenol rectification residual liquid sample to prepare a to-be-detected sample, and preparing phenyl sulfide standard substance solutions with different concentrations; the method comprises the following steps: determining a to-be-detected sample and a phenyl sulfide standard substance solution by adopting a high performance liquid chromatograph, drawing a standard curve and a linear regression equation according to a detection result of the phenyl sulfide standard substance solution, and analyzing the phenyl sulfide in the sample by combining the linear regression equation and a chromatographic peak map of the to-be-detected sample, wherein the mobile phase comprises a phase A and a phase B, the phase A is an aqueous solution of phosphate buffer salt, the phase B is methanol, and an isocratic elution mode is adopted. According to the present invention, with the method, the accurate determination of the phenyl sulfide content in the 2, 4-dichlorophenol rectification residual liquid is achieved, the timely and accurate data guidance is provided for the 2, 4-D production process, and the target of production cost saving is ultimately achieved.

The application discloses a kind of polyphenylene sulfide composite material and its preparation method and application, belong to high polymer material field.The polyphenylene sulfide composite material of the application comprises the following components by weight: PPS resin 49~91 parts, PC resin 2~15 parts, glass fiber 10~50 parts, epoxy resin 0.1~3 parts;Wherein the viscosity ratio of PC resin and PPS resin is (2~11):1.The application adds PC resin and epoxy resin in glass fiber reinforced polyphenylene sulfide composite material, and controls the viscosity ratio of PPS resin and PC resin in suitable range and the dosage of above-mentioned components in specific range, so that the material is short after injection molding flash length, not easy to float fiber, appearance is good, suitable for being used in automobile, electronic appliances, mechanical parts and the like product.

This invention relates to the field of polymer materials technology, specifically to a modified sealing material based on polyphenylene sulfide (PPS) and its preparation method. This invention overcomes the problems of poor mechanical properties and poor thermal stability of existing sealing materials. In this application, PPS resin, nano-hexagonal boron nitride, calcium pimecronate, and a composite antioxidant are mixed to obtain a premix. This premix, PPS-grafted maleic anhydride, modified silica fume, and modified glass fiber are added stepwise through a twin-screw extruder, followed by extrusion granulation. Finally, variable mold temperature injection molding is used, with the mold temperature rising and then rapidly cooled during the filling stage to obtain the modified sealing material. This invention constructs a microscopic synergistic reinforcing network through a flexible polydopamine layer and a rigid inorganic phase, supplemented by rapid heating and cooling injection molding to eliminate residual internal stress and induce uniform and rapid crystallization of PPS, significantly improving the mechanical strength, fatigue life, and thermal stability of the molded part.

The application discloses a kind of polyphenyl sulfide fiber pps filter bag, it is related to filter material technical field.The application discloses a kind of preparation method of polyphenyl sulfide fiber pps filter bag, comprising the following steps: polyphenyl sulfide, modified silica is fused extrusion granulation, and granulated material is obtained;Granulated material is melt-blown spinning, heat setting, hot rolling, and pps filter bag is obtained;Modified silica is obtained after being modified by ethylenediamine tetraacetic acid anhydride from aminated mesoporous silica, and then being treated by epichlorohydrin epoxy.The modified silica prepared in the application is added to polyphenyl sulfide granulation, melt-blown treatment, and the obtained polyphenyl sulfide fiber has the characteristics of good mechanical properties, the polyphenyl sulfide fiber prepared by the application is used to prepare pps filter bag, and the prepared filter bag is applied to filter high-temperature flue gas, has the advantages of oxidation resistance and crosslinking resistance, and has high filtration precision and trapping effect in filtering flue gas in thermal oxygen environment.

The present invention relates to a polyphenylene sulfide resin composition which is a resin composition formed by compounding, relative to 100 parts by weight of (A) a polyphenylene sulfide resin, 16 to 50 parts by weight of (B) a thermoplastic resin having a tracking resistance of 125 V or more and a glass transition temperature of 0°C or more based on the IEC 60112 standard, 10 to 25 parts by weight of (C) an olefin-based copolymer containing an epoxy group, 10 to 25 parts by weight of (D) an olefin-based copolymer having no polar functional group, and 40 to 140 parts by weight of (E) a fibrous filler material, the thermoplastic resin of (B), the olefin-based copolymer containing an epoxy group of (C), and the olefin-based copolymer having no polar functional group of (D) being dispersed so as to have a number average dispersed particle diameter of 500 nm or less. A polyphenylene sulfide resin composition and a molded product thereof are provided, which do not substantially impair the excellent mechanical strength inherently possessed by polyphenylene sulfide resin and in which tracking resistance and toughness are improved in good balance.

This invention belongs to the field of composite material technology, specifically disclosing a high-dielectric-constant, low-dielectric-loss polyphenylene sulfide composite material, its preparation method, and its applications. The composite material comprises the following components in parts by weight: 100 parts of polyphenylene sulfide matrix, 10-60 parts of high-dielectric-constant nanofiller, 0.5-8 parts of metal nanoparticles, and 0.5-5 parts of surface modifier. This invention utilizes the aforementioned high-dielectric-constant, low-dielectric-loss polyphenylene sulfide composite material, its preparation method, and its applications. The composite material exhibits a high dielectric constant and achieves low dielectric loss. It also enhances its mechanical strength and toughness, enabling the composite material to maintain its electronic properties while possessing excellent physical properties.

This invention belongs to the field of polymer composite materials technology, specifically relating to a pole frame insulating composite material and its preparation method. The pole frame insulating composite material comprises polyphenylene sulfide resin, surface-modified reinforcing fibers, composite insulating filler, interfacial compatibilizer, and composite anti-aging agent. The composite insulating filler is composed of micron-sized and nano-sized insulating particles, constructing a multi-scale charge trap network within the matrix. This invention also introduces piezoelectric ceramic functional modulator filler, utilizing the internal residual stress generated during integrated injection molding for in-situ pre-polarization, actively suppressing local electric field spikes. The preparation method includes raw material pretreatment, filler premixing modification, melt blending extrusion, stress-relief annealing, and integrated injection molding. This invention achieves a systematic improvement in the pole frame insulating composite material's high dielectric strength, high mechanical properties, and chemical corrosion resistance through interfacial chemical bonding and multi-scale structural synergy.

The invention discloses a self-lubricating PEEK-based composite material and a preparation method thereof, and belongs to the technical field of PEEK composite materials. The self-lubricating PEEK-based composite material is prepared from the following raw materials in parts by mass: 100 parts of polyether-ether-ketone resin, 10 to 15 parts of polyarylene sulfide ketone, 5 to 10 parts of polyarylene sulfide amide, 15 to 25 parts of epoxy group modified MoS2atCO-SiO2 nano material, 4 to 12 parts of modified carbon fiber and 1 to 2 parts of antioxidant. Wherein the modified carbon fiber is obtained by carrying out acylation reaction on carboxylated carbon fiber and then carrying out grafting reaction on the carboxylated carbon fiber and 2-aminodiphenyl sulfide. According to the invention, polyether-ether-ketone, polyarylene sulfide ketone and polyarylene sulfide amide are blended to form a polymer matrix of the PEEK-based composite material, and the epoxy group modified MoS2atCO-SiO2 nano material and the modified carbon fiber are used as lubricating components, so that the composite material has an excellent self-lubricating effect under the combined action.

To provide a polyphenylene sulfide resin composition which can suppress oxidative crosslinking in an environment exceeding 200 °C and is excellent in long-term high-temperature durability of mechanical properties.SOLUTION: In an absorbance spectrum obtained by infrared spectroscopy (transmission method) using an amorphous film (x) of the polyphenylene sulfide composition and an amorphous film (y) obtained after heat treatment of the film at 220 °C for 500 hours in the atmosphere, when maximum peak intensities present in a wave number range of 1210 to 1245cm - 1 are (X) and (Y), respectively, the following formula (A) is satisfied: (Y) - (X) <0.5 Formula (A) SELECTED DRAWING: None

The invention discloses an epoxy adhesive for bonding a polyphenylene sulfide diaphragm-polytetrafluoroethylene gasket and a preparation method of the epoxy adhesive, and belongs to the technical field of hydrogen production by alkaline electrolyzed water, the epoxy adhesive for the polyphenylene sulfide diaphragm-polytetrafluoroethylene gasket comprises a component A and a component B, wherein the component A comprises epoxy resin, a monofunctional group type benzene ring rigid structure diluent, silane crosslinking modified nano zirconium oxide powder, polyphenylene sulfide micron-sized powder, nano silicon carbide powder and an auxiliary agent; and the component B is an amine curing agent. The adhesive prepared by the invention has the advantages of strong alkali resistance, high temperature resistance, high adaptability to base materials, low VOC (volatile organic compounds) and the like.

Provided are a poly(phenylene sulfide)-based magnetic material, a preparation method therefor, and an application thereof, and the poly(phenylene sulfide)-based magnetic material includes a linear poly(phenylene sulfide), a magnetic powder, a phenyl silicone resin, a hyperbranched poly(phenylene sulfide), and a lubricant. In the present application, the bonding force of the magnetic powder with the poly(phenylene sulfide) at high temperature is improved by adding the phenyl silicone resin, the structure of the linear poly(phenylene sulfide) is modified by adding the hyperbranched poly(phenylene sulfide) to increase the strength and toughness of the poly(phenylene sulfide)-based magnetic material, and the fluidity is improved by adding the lubricant, so that the prepared poly(phenylene sulfide)-based magnetic material has the characteristics of high strength, good toughness, and good fluidity.