24 results about "Diphenyl disulfide" patented technology

The invention belongs to the technical field of epoxy resin, and particularly relates to double-dynamic-bond synergistic exchange epoxy resin as well as a preparation method and application thereof. The preparation method of the double dynamic bond synergistic exchange epoxy resin comprises the following steps: adding aromatic dialdehyde and amino-containing disulfide into a solvent for condensation reaction, and filtering and drying to obtain a double dynamic bond curing agent; the preparation method comprises the following steps: adding the double-dynamic-bond curing agent into epoxy resin, carrying out ring-opening addition reaction, carrying out gradient heating curing, and cooling to room temperature, the aromatic dialdehyde is terephthalaldehyde, isophthalaldehyde or o-phthalaldehyde, and the amino-containing disulfide is 2, 2 '-diaminodiphenyl disulfide or 4, 4'-diaminodiphenyl disulfide. The invention designs and synthesizes a double-dynamic covalent bond curing agent containing an imine bond and a disulfide bond, and is used for constructing a novel degradable and self-healing epoxy resin. The material maintains good thermal stability and insulation performance, and realizes degradation and self-healing functions at the same time.

The invention relates to the technical field of lithium ion batteries, in particular to a thermal response interface passivator composition, an electrolyte and a lithium ion battery. The thermal response interface passivator composition comprises a silane component and a chalcogenide component, the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane or gamma-methacryloyloxypropyltrimethoxysilane, and the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and gamma-methacryloyloxypropyltrimethoxysilane; the sulfur component is selected from diisopropyl xanthate disulfide and / or diphenyl disulfide. The thermal response interface passivator composition provided by the invention does not influence the electrochemical performance of a battery under the conventional operation condition of the battery, and can spontaneously polymerize on the surface of a negative electrode at the high temperature of 100-120 DEG C to form a stable and compact passivation layer, namely, an effective thermal barrier is formed before a diaphragm is broken, so that electron leakage and electrolyte decomposition are effectively blocked, and the service life of the battery is prolonged. And the thermal safety of the battery is obviously improved.

The invention discloses an application of diphenyl disulfide as an additive of an active layer of a photovoltaic cell and the photovoltaic cell, which comprises the step of adding a volatile solid additive diphenyl disulfide into the active layer to regulate and control the performance of the active layer. The solid additive is added in the acceptor film forming process, and acceptor molecule aggregation and crystallization behaviors are continuously regulated and controlled in the film forming process and the thermal annealing process. The introduction of diphenyl disulfide can synergistically optimize multi-stage crystallization kinetics, enhance H-aggregation and J-aggregation at the same time, promote the formation of a receptor fibrous polycrystalline structure, improve the carrier mobility, and effectively improve the exciton dissociation and charge transfer capabilities of the active layer. Based on the regulation and control, the organic photovoltaic device using the diphenyl disulfide as the additive realizes the significant improvement of photovoltaic performance, the energy conversion efficiency reaches 19%, a new development direction is provided for the design of a multifunctional solid additive and the accurate control of the form of an active layer in the future, and a powerful technical support is provided for organic photovoltaic industrialization in the future.

To provide a cathode mixture configured to increase the discharge capacity of a lithium secondary battery. The cathode mixture is a cathode mixture for lithium secondary batteries, comprising: a cathode active material containing an S element, and diphenyl disulfide as an additive, wherein a content of the diphenyl disulfide in the cathode mixture is less than 13.0 mass % of a total mass (100 mass %) of the cathode mixture.

The invention provides a preparation method of a carbon fiber composite material and a preparation method of a welding structure, and belongs to the technical field of composite materials. The preparation method of the carbon fiber composite material comprises the following steps: mixing bisphenol A diglycidyl ether, polypropylene glycol diglycidyl ether and 2, 2 '-diaminodiphenyl disulfide to obtain a Vitrimer resin precursor; the preparation method comprises the following steps: coating a Vitrimer resin precursor on a carbon fiber fabric, and then sequentially carrying out film coating and rolling to obtain an intermediate product; performing first thermocuring treatment on the intermediate product to obtain a sheet; carrying out second thermocuring treatment on the Vitrimer resin precursor to obtain a resin material; multiple layers of sheets are sequentially stacked in the thickness direction of the sheets, a resin material is inserted between every two adjacent layers of sheets, and the carbon fiber composite material is obtained through hot pressing treatment. The invention aims to solve the problems that the prepreg is not easy to store and the curing time of the laminated plate is long in the existing prepreg process.

The application belongs to the technical field of organic synthesis, and particularly relates to a method for synthesizing 1-(2,4-dimethylphenyl)thio-N-benzyl-2-naphthylamine by a continuous flow light-heat integrated method. The method is performed in a micro-channel reaction device provided with light and heat. N-benzyl-2-naphthylamine, 2,2',4,4'-tetramethyl diphenyl disulfide and a catalyst sodium iodide are dissolved in acetonitrile solvent to obtain a reaction solution. A blue light is used as a light source of a reaction module, and the temperature is adjusted to 25-60 DEG C. Air or oxygen is introduced into the reaction solution, and magnetic stirring is performed. Then, the gas-liquid mixed reaction solution is input into the reaction module through a peristaltic pump to obtain 1-(2,4-dimethylphenyl)thio-N-benzyl-2-naphthylamine. The application creatively uses the continuous flow light-heat integrated reaction technology to synthesize 1-(2,4-dimethylphenyl)thio-N-benzyl-2-naphthylamine, greatly improves the reaction efficiency, shortens the reaction time, improves the safety and controllability of the reaction, solves the amplification effect of the conventional reaction, and provides a reaction technology without bottleneck amplification for the synthesis of the compound.

The invention discloses a direct coal liquefaction residue pyrolysis viscosity reduction method based on an inhibition-cracking-regulation triple synergistic system, and belongs to the technical field of coal chemical industry. The method comprises the following steps: firstly, carrying out swelling treatment on the direct coal liquefaction residues, adding a modifier into the direct coal liquefaction residues, and carrying out front-end prevention by using the modifier to inhibit the formation of a macromolecular network; adding a nano-scale transition metal catalyst, and uniformly dispersing the nano-scale transition metal catalyst in the modified direct coal liquefaction residues to obtain a sample I, so as to achieve the purpose of catalytic cracking of heavy components at the middle end; finally, diphenyl disulfide is introduced into the first sample, the diphenyl disulfide is automatically decomposed into a free radical terminator in a viscosity peak temperature window, and a free radical polycondensation path causing viscosity soaring and coking is actively intervened and cut off from the molecular level, so that the viscosity is remarkably reduced, and meanwhile, the light oil yield is synchronously increased. According to the method, the problem of viscosity control in the pyrolysis process of the direct coal liquefaction residues can be fundamentally solved, and meanwhile, high-efficiency recovery of high-added-value liquid products is realized.

The invention provides an ABS (Acrylonitrile Butadiene Styrene) material for an electronic product shell and a preparation method of the ABS material, and belongs to the field of ABS materials. The composite material is prepared from the following raw materials in parts by weight: 70 to 85 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 5 to 15 parts of a structured toughening agent, 1 to 5 parts of butadiene functionalized graphite nanosheet filler, 2 to 8 parts of a hyperbranched dynamic cross-linking agent, 0.5 to 3 parts of a styrene-maleic anhydride copolymer, 0.1 to 1 part of diphenyl disulfide, 0.5 to 1.5 parts of a lubricating agent and 0.1 to 0.5 part of an antioxidant. Through precise component selection and structural design, a multi-mechanism collaborative system is constructed, and the strength, toughness and self-repairing performance of the ABS material are synchronously improved.

The application discloses a kind of sulfur-containing full solid-state polymer electrolyte membrane for energy storage lithium battery and preparation method thereof, belong to polymer electrolyte technical field.The preparation method of sulfur-containing full solid-state polymer electrolyte membrane provided by the application includes uniformly mixing 2,2'-diamino diphenyl disulfide and sulfurized divinyl, and obtaining polymer solid by polymerization reaction;The mixed solution is obtained by dissolving the polymer solid in dimethyl sulfoxide, lithium bis-trifluoromethanesulfonimide is added to the mixed solution and uniformly mixed to obtain a precursor solution;The precursor solution is cast in a mold, and the sulfur-containing full solid-state polymer electrolyte membrane is obtained after vacuum drying.The electrolyte membrane provided by the application solves the technical problems of low ionic conductivity of traditional solid-state electrolyte, insufficient lithium ion migration number, serious interface polarization and weak oxidation resistance through triple mechanism.At the same time, the lithium metal battery assembled by the sulfur-containing full solid-state polymer electrolyte has excellent electrochemical performance and cycle performance.

The invention discloses a preparation method of a fluorine-substituted trans-olefin compound. Specifically, the invention discloses a preparation method of a compound as shown in a formula VII, which comprises the following steps: in a solvent, in the presence of a free radical initiator and a free radical source, a compound as shown in a formula VI-1 is subjected to an isomerization reaction to prepare the compound as shown in the formula VII, the free radical initiator is dimethyl azobis (2-methylpropionate), and the free radical source is dimethyl azobis (2-methylpropionate). The free radical source is diphenyl disulfide.

The application discloses a preparation method of an ultraviolet curing antistatic coating and relates to the technical field of antistatic coatings. In the application, hydrochloric acid doped polyaniline is used as a core material, 1-butyl-3-methyl imidazole bistrifluoromethanesulfonylimide ionic liquid is introduced as a dopant, and the carrier mobility of the polyaniline is significantly improved. Urea-formaldehyde resin is used as a wall material to coat the surface of the polyaniline to form microcapsules. The microcapsules release polyaniline and ionic liquid compounds after being broken to fill the crack gap. Secondly, 3,3'-dihydroxy diphenyl disulfide and acryloyl chloride are used as raw materials to generate a disulfide bond diacrylate monomer through an esterification reaction. The monomer, tetra(3-mercaptopropionic acid) pentaerythritol ester crosslinking agent and epoxy vinyl ester resin form a three-dimensional crosslinking network. The mercapto groups in the crosslinking agent and the acrylate groups of the disulfide bond diacrylate monomer undergo a click reaction to realize the topological structure reorganization of the molecular chain. The coating prepared by the application has the effect of long-acting antistatic.

The application belongs to the field of novel functional materials, and particularly relates to a high-recovery self-healing polyurethane elastomer material and a preparation method thereof. The self-healing elastomer material is prepared from the following components: 50-100 parts by weight of a polyurethane prepolymer, and 13-28 parts by weight of a chain extender composition. The polyurethane prepolymer is obtained from a polyol with a molecular weight of 2000 and isophorone diisocyanate under catalytic reaction of dibutyltin dilaurate. The chain extender is a combination of a pendant chain chain extender, 4,4'-diamino diphenyl disulfide and 4,4'-diamino diphenyl ethane. The solvent is N,N-dimethylacetamide. The polyurethane elastomer provided by the application has a self-healing performance recovery rate of more than 90% at 60 DEG C for 12 hours, is suitable for precision instrument laboratory floor coating, medical materials and aerospace fields, realizes scratch self-repairing, and prolongs the service life.

The invention relates to the technical field of batteries, in particular to a secondary battery and a preparation method thereof, a gel electrolyte and an electric device. The secondary battery comprises an outer package, an electrode assembly and a gel electrolyte, the electrode assembly and the gel electrolyte are contained in the outer package, and the gel electrolyte comprises a polymer, a solvent and electrolyte salt; the polymer comprises a copolymer of an acrylate oligomer and a diphenyl disulfide monomer. The secondary battery has a relatively long cycle life.

This invention relates to a simple method for preparing photochromic triphenylacrylonitrile compounds. The readily synthesizable 2-(4-bromophenyl)-3,3-diphenylacetonitrile acrylonitrile is reacted with diphenyl disulfide to obtain a sulfide fluorescent compound, which is then oxidized using different oxidants to obtain sulfoxide or sulfone fluorescent compounds. All synthesized fluorescent compounds exhibit photochromic properties in solution. The sulfoxide-containing triphenylacrylonitrile compounds can be recrystallized using different methods to obtain crystals with two conformations, only one of which exhibits photochromic properties. This method is simple to operate and has high yield. The crystal structure of the compounds prepared by this method is beneficial for studying the relationship between solid conformation and photostimulation, and can be applied to memory storage materials.

The application discloses a solid photochromic fluorescent compound containing a sulfoxide group and a synthesis method thereof. A bromine-containing triaryl ethylene fluorescent compound which is easy to synthesize is reacted with a diphenyl disulfide to obtain a sulfide fluorescent compound, and then the sulfide fluorescent compound is oxidized to obtain a sulfoxide fluorescent compound. In addition, through different crystallization methods, the triaryl styrene fluorescent compound containing the sulfoxide group can obtain two kinds of crystal with different packing modes, one of which has photochromic performance, and the relationship between the packing mode and the photochromic performance is conducive to research.

The invention relates to a high-durability self-healing polyimide-based flexible sensing base material and a preparation method of the high-durability self-healing polyimide-based flexible sensing base material. The high-durability self-healing polyimide-based flexible sensing base material is prepared from the following components in parts by weight: 80 to 90 parts of dynamic modified polyimide matrix, 5 to 10 parts of silane coupling agent KH-580 modified Ti < 3 > C < 2 > T < x > MXene, 4 to 8 parts of self-healing microcapsule and 1 to 3 parts of polycaprolactone-polyethylene glycol segmented copolymer, wherein the dynamic modified polyimide matrix is prepared by copolymerization of 3, 3 ', 4, 4'-benzophenone tetracarboxylic dianhydride, 4, 4 '-diaminodiphenyl disulfide and dimercaptopropionic acid; a core material of the self-healing microcapsule is an isocyanate-polyol prepolymer, and a wall material of the self-healing microcapsule is urea resin. The high-durability self-healing polyimide-based flexible sensing base material disclosed by the invention is high in self-healing capability and high in durability.

The application provides a high-heat-resistance self-repairing epoxy resin based on a dynamic disulfide bond, a preparation method thereof, a fiber-reinforced composite material and application, and belongs to the technical field of intelligent composite materials. The preparation method comprises the following steps: S1. mixing bisphenol F diglycidyl ether and 4,4'-methylene di(N,N-diglycidyl aniline), heating and stirring until the mixture is uniform to obtain a mixed epoxy base; S2. mixing the mixed epoxy base with a curing agent 4,4'-diamino diphenyl disulfide, heating and stirring until the mixture is uniform, and then performing vacuum degassing treatment to obtain a prepolymer; and S3. performing a stepwise temperature rising curing reaction on the prepolymer to obtain the high-heat-resistance self-repairing epoxy resin. The high-heat-resistance self-repairing epoxy resin prepared by the application not only retains the inherent high strength and process stability of high-performance epoxy resins, but also is endowed with excellent intelligent damage repair function, the Tg of the high-heat-resistance self-repairing epoxy resin is much higher than that of conventional self-repairing materials, and the mechanical properties, heat resistance and high-efficiency self-repairing capability are simultaneously considered.

This invention relates to a method for preparing high-yield and high-purity polyphenylene sulfide (PPS), belonging to the field of oxidative polymerization. The technical problem solved by this invention is to provide a method for producing PPS with mild reaction conditions and high yield and high purity. This method uses diphenyl disulfide as a raw material, sulfoxide as a solvent, oxygen as an oxidant, and a vanadium-based Lewis acid complex as a catalyst. The main process flow includes feeding, synergistic effect of the catalyst and oxygen, polymerization, filtration, washing, and drying. High-yield and high-purity PPS is obtained through oxidative polymerization at room temperature and pressure. This invention features a simple process flow, mild conditions, and does not require the use of other polymerization aids. It avoids the impact of byproducts such as sodium metal salts generated in many preparation methods on the toughness of the product, and the yield can reach almost 100%, with high product purity.

The present application relates to a preparation method of high-efficiency synthesis of polyphenylene sulfide, and belongs to the field of oxidative polymerization, and mainly solves the technical problem of providing a reaction method with less side reaction, low requirement for equipment, short reaction flow, and simple post-treatment. The method mainly uses diphenyl disulfide as a reactant, dichloromethane as a reaction solvent, a mixture of manganese and Lewis acid as a catalyst for the reaction, and air as an oxidizing agent for the reaction under the above conditions, so that the yield of the product reaches 99%, the chemical stability of the product is high, the mechanical property is also good, and the purity is relatively high. The present application uses air as an oxidizing agent and is under normal pressure, has a simple process flow, mild reaction conditions, and the selection of the catalyst considers the process recovery design, that is, after the catalyst is used, it can be recovered for the next batch of synthesis of polyphenylene sulfide reaction after simple treatment, and has great industrial application value.

The invention discloses a modified aramid pulp and an aramid pulp composite material prepared from the modified aramid pulp, and belongs to the field of high polymer materials, the modified aramid pulp adopts a deep eutectic solvent (DES) as a modifier, entanglement of microfibers can be reduced, interface interaction between the aramid pulp and a rubber molecular chain can be improved, and the performance of the aramid pulp is improved. The mechanical property of the prepared rubber aramid pulp composite material is obviously improved; the modified aramid pulp composite material is prepared from the following components in parts by mass: 100 parts of raw rubber, 2 to 10 parts of zinc oxide, 1 to 3 parts of stearic acid, 0.5 to 2.5 parts of sulfur, 0.5 to 3 parts of dibenzothiazyl disulfide, 40 to 65 parts of reinforcing agent and 0.5 to 6 parts of modified aramid pulp.

The invention relates to a preparation method of a low-thermal-resistance polyurethane-based thermal interface material with high-temperature shape stability. The preparation method comprises the following steps: synthesizing a prepolymer by using polytetrahydrofuran, polypropylene glycol, diphenylmethane diisocyanate, a phase change material, a dynamic covalent bond material and a catalyst; and then mixing the prepolymer, a heat-conducting filler and a curing agent, calendaring and molding, and heating and curing to obtain the heat-conducting adhesive, the phase change material is selected from polyethylene glycol or stearic acid; the dynamic covalent bond material is 2, 2 '-diaminodiphenyl disulfide. Compared with the prior art, the phase-change material and the dynamic covalent bond are introduced to prepare a polyurethane matrix with temperature-pressure dual response, and the matrix is used for preparing the polyurethane-based thermal interface material with shape stability at high temperature and good flexibility under the service condition. The phase-change material is introduced into a polymer matrix in a chemical bonding manner, so that the influence of direct addition of the phase-change material on the thermal conductivity of the external surface is avoided.

The application relates to the field of crucibles, in particular to a high-resistance crucible for graphitization of lithium battery negative materials and a preparation process thereof. First, isocyanate-terminated prepolymer is synthesized from hydroxyl-terminated polydimethylsiloxane and isophorone diisocyanate as raw materials under the catalysis of a catalyst dibutyltin dilaurate, and then organic silicon polyurethane prepolymer is synthesized from adipic acid dihydrazide and 4,4'-diamino diphenyl disulfide as chain extenders; further, modified pitch is prepared by in-situ polymerization of the organic silicon polyurethane prepolymer together with composite basalt fiber and cage polyol; polyhydroxyl cage polyol is prepared from polycaprolactone triol, polycaprolactone tetrol and dicyclohexylmethane diisocyanate; and zirconium-titanium bimetallic organic framework with terephthalic acid as an organic ligand is grown on the surface of activated basalt fiber layer by layer through a layer-by-layer self-assembly method, and the composite basalt fiber is obtained by modification treatment with the cage polyol.

The invention relates to the technical field of preparation of road asphalt mixtures, in particular to an asphalt mixture for a noise-reducing anti-skid wearing layer and a preparation method of the asphalt mixture. The preparation method comprises the following steps: firstly, taking polypropylene glycol and toluene-2, 4-diisocyanate as raw materials, taking glycidol as an end-capping reagent, and taking 4, 4 '-diaminodiphenyl disulfide and ethylene carbonate to react to obtain a dihydroxy disulfide compound as a chain extender to prepare epoxy polyurethane; mixing the asphalt base material, the epoxy polyurethane, the compatibilizer, the antioxidant 3052 and the fatty amine curing agent to obtain a modified asphalt base material, adding the coarse aggregate, the fine aggregate, the mineral powder, the volcanic ash and the modified lignin, and stirring to obtain the asphalt mixture. The asphalt mixture prepared by the invention is excellent in performance and can be used for a pavement noise-reduction anti-skid wearing layer.

The application discloses a self-repairing polyurethane phase change material based on a polyethylene glycol / hexamethylene diisocyanate trimer dynamic semi-interpenetrating network and a preparation method thereof. The method comprises the following steps: in-situ constructing a dynamic cross-linked polyurethane network matrix with solid-solid phase change capacity by using polyethylene glycol with a number average molecular weight of 2000, hexamethylene diisocyanate trimer and 2,2'-diamino diphenyl disulfide, introducing 30wt.%-70wt.% of cetyl alcohol in the total mass of the material into the network matrix system and solidifying to obtain the phase change material; and the mass ratio of the polyethylene glycol and the cetyl alcohol is 1:0.43-1:2.33. In the material, the cetyl alcohol is physically inserted in the three-dimensional network space formed by the dynamic cross-linked polyurethane network in the form of a non-covalent dispersed phase, and the PEG soft segment in the dynamic cross-linked polyurethane network matrix and the cetyl alcohol both retain reversible crystallization capacity, thereby forming a dynamic semi-interpenetrating network system in which the network matrix phase and the dispersed phase jointly participate in heat storage. Compared with the existing polyurethane-based phase change material which mainly relies on a long-chain fatty alcohol dispersed phase to store heat, the material has good heat storage capacity, zero leakage performance, shape stability and thermal stimulus self-repairing performance, and can be applied to the fields of heat management and heat storage.