155 results about "Phthalonitrile" patented technology

The invention discloses a phthalonitrile modified phenolic aerogel and a preparation method and application thereof. Linear phenolic aldehyde, 4-nitrophthalonitrile and a basic catalyst are dissolved in an organic solvent, a water bath reaction is conducted, powder is prepared, and phthalonitrile etherified phenolic resin is obtained; preparing a mixed solvent, and dissolving linear phenolic aldehyde and phthalonitrile etherified phenolic resin in the mixed solvent to obtain a mixed solution; adding a cross-linking agent into the mixed solution, carrying out sol-gel reaction to obtain wet gel, and aging, segmentally curing and drying the wet gel to obtain the phthalonitrile modified phenolic aerogel. The pyrolytic property of the phenolic aerogel is improved, the phthalonitrile modified phenolic aerogel with high carbon residue and high thermal stability is obtained under the condition of low-temperature heating, and the method is suitable for being applied to the field of thermal insulation ablation of a thermal protection system of aerospace equipment.

The invention provides a nitrilase mutant and application of the nitrilase mutant in synthesis of p-cyanobenzoic acid. The invention provides a nitrilase mutant capable of improving the activity of catalytic synthesis of p-cyanobenzoic acid, the mutant protein is a non-natural protein, and the mutant protein can significantly improve the activity of catalyzing p-phthalonitrile to generate p-cyanobenzoic acid. And the mutant protein mutates in two or more core amino acids related to enzyme catalytic activity of the wild nitrilase. The nitrilase mutant provided by the invention can significantly improve the yield of a nitrilase catalytic synthesis product.

The invention relates to the technical field of electronic packaging materials, in particular to a phthalonitrile modified thermosetting resin composition containing a siloxane structure and application of the phthalonitrile modified thermosetting resin composition in the electronic packaging materials. The composition comprises multifunctional epoxy resin, XYLOK phenolic resin, a curing accelerator, a modifier and an inorganic filler, and the modifying agent is eugenol phthalonitrile trisiloxane. The modifier disclosed by the invention has good mechanical compatibility and dispersity in matrix resin; when the epoxy resin is applied to a thermosetting resin system, the processability can be improved, and the toughness of a cured product can be effectively improved while the glass-transition temperature is increased, so that the cured product has excellent bending property; the composition has excellent thermal stability, low bending modulus, good impact performance and humidity and heat resistance after being cured, the glass transition temperature of the composition is effectively improved, the comprehensive performance of resin is remarkably improved, and the composition is suitable for improving the packaging reliability and environmental stability of semiconductor devices.

The present invention relates to bio-based bisphenol monomer of formula I and process of preparation thereof. Specifically, the present invention relates to bio-based bisphenol monomers of formula I containing multiple alkoxyl groups, and polyphenols. The bisphenol monomers of formula I contain built-in methoxyl groups, which represent latent phenolic hydroxyl groups and could conveniently be de-blocked to phenolic hydroxyl groups leading to formation of polyphenols containing catechol / phloroglucinol units with anti-oxidant properties and are potentially useful in various applications like cosmetics, polymer additives and so on. Further, the present invention relates to process of preparation of polymers using bisphenol monomer of formula I as valuable building blocks wherein the high performance thermoplastics are poly(ether sulfone)s, poly(ether ether ketone)s, polyesters, polycarbonates, polyphosphonates, etc. and thermosetting resins are epoxies, cyanate esters, phthalonitriles, propargyl ethers, etc.

The invention relates to organic silicon modified phthalonitrile resin and a preparation method and application thereof.The organic silicon modified phthalonitrile resin is synthesized through a two-step method, the obtained product has certain fluidity in a room temperature environment due to the existence of silicon-oxygen bonds, and the silicon-oxygen bonds have high bond energy so that the silicon-oxygen bonds can not be easily decomposed in a high-temperature environment; meanwhile, high machinability and high temperature resistance are achieved, the synthesis process is simple, and universality is achieved. The resin can be used for easily preparing a composite material prepreg, and is compatible with various composite material forming methods, so that the application prospect of the resin in the field of composite materials is greatly expanded.

The invention relates to the technical field of electronic packaging materials, in particular to a thermosetting resin composition for packaging a high-reliability semiconductor device. The composition comprises multifunctional epoxy resin, XYLOK phenolic resin, a curing accelerator, a modifier and an inorganic filler, and the modifying agent is eugenol phthalonitrile polysiloxane. The modifier has good mechanical compatibility and dispersity in matrix resin; and when being applied to a thermosetting resin system, the epoxy resin can improve the processability and effectively enhance the toughness of a cured product. The composition provided by the invention accords with the processing and forming process of the existing epoxy molding compound; according to the present invention, the spiral flow length of the molding compound is substantially increased, the processing performance is good, the cured product has advantages of good thermal stability, low bending modulus, good impact property and good heat and humidity resistance, and the glass transition temperature is increased. The resin is significantly improved in comprehensive performance, and is suitable for packaging semiconductor devices with high requirements on reliability and environmental stability.

The invention relates to the technical field of lithium ion batteries, and discloses a composition for an electrolyte, the electrolyte, a preparation method of the electrolyte and a lithium ion battery. The composition contains a lithium salt, a film-forming additive, an organic solvent and an auxiliary agent, wherein on the basis of the total weight of the electrolyte, the content of the lithium salt is 6-20 wt%, the content of the film-forming additive is 2-6 wt%, the content of the organic solvent is 75-90 wt%, and the content of the auxiliary agent is 2-10 wt%; the auxiliary agent is a combination of 4-iodo phthalonitrile and 6-fluoro-nicotinonitrile in a mass ratio of 1: (0.5-2). When the electrolyte prepared from the composition for the electrolyte provided by the invention is applied to a lithium ion battery system of a single-particle graphite negative electrode, the interface stability of the single-particle graphite negative electrode at a high temperature can be remarkably improved, and the problems of negative electrode polarization increase and gas production are inhibited; and the high-temperature cycle life and the high-temperature rate capability of the lithium ion battery can be remarkably improved.

The invention discloses a moisture-proof and heat-insulating refractory material and a preparation method thereof, and relates to the technical field of refractory materials, and the moisture-proof and heat-insulating refractory material comprises dolomite, nano silicon dioxide, silica, an anhydrous binder and a moisture-proof agent. The synthesized moisture-proof agent is obtained by modifying asphalt through modified SBS obtained by grafting SBS and a monomer product containing terminal carbon-carbon double bonds, phosphate and a phthalonitrile structure, and has excellent flame retardance, high temperature resistance and waterproofness. And by using the nano silicon dioxide, the heat insulation performance of the refractory material can meet the requirements. The refractory material disclosed by the invention is excellent in refractoriness and moisture resistance and worthy of popularization and application.

The invention relates to the technical field of silicone rubber, in particular to high-temperature-resistant flame-retardant silicone rubber, a preparation method thereof and a cable, the high-temperature-resistant flame-retardant silicone rubber comprises a gradient layer material composed of a surface layer material, a transition layer material and a core layer material, and the surface layer material comprises methyl vinyl silicone rubber, superfine furnace black, calcium stannate, polyacrylonitrile aerogel and a flame-retardant premix; the transition layer material comprises methyl vinyl silicone rubber, superfine furnace carbon black, spandex fibers, polyarylester, calcium stannate and a flame-retardant premix; the core layer material is prepared from methyl vinyl silicone rubber, superfine furnace black, aramid fiber, polyarylester, phthalonitrile resin and 2-mercaptobenzothiazole zinc salt; wherein the flame-retardant premix is prepared from hydroquinone bis (diphenyl) phosphate, phenyl ethyl aluminum phosphinate and zinc hypophosphite according to the weight ratio of (6 to 10): (2 to 4): (1 to 3); the problems that an existing material is prone to aging in an extreme environment, the flame retardant effect is poor, and the mechanical property is degraded are effectively solved.

The invention provides a resin composition, a prepreg, a laminated board and a preparation method thereof. The resin composition is prepared from the following components in parts by mass: 40 to 100 parts of phthalonitrile-terminated polyphenyl ether, 10 to 40 parts of phenolphthalein-containing polyarylether amine and 10 to 60 parts of inorganic filler, the structure of the phthalonitrile-terminated polyphenyl ether is as shown in a formula (I), the structure of the phenolphthalein-containing polyarylether amine is as shown in a formula (II), a, m and n are all positive integers, and Y is C1-C3 alkylene or a single bond. The laminated board prepared from the resin composition has excellent comprehensive properties such as high peel strength, high decomposition temperature, high elastic modulus, good flame retardant property, low dielectric coefficient, low water absorption rate and the like.

The invention discloses a phosphorus-nitrogen-containing double-doped high-capacity resin-based hard carbon negative electrode material and a preparation method thereof, and the material is prepared by the following steps: reacting a nitrogen-containing organic matter 3-aminophenoxy phthalonitrile, which is independently and innovatively synthesized, with a phosphorus-containing organic matter 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide DOPO, so as to obtain the phosphorus-nitrogen-containing double-doped high-capacity resin-based hard carbon negative electrode material. And carrying out pyrolysis cross-linking and carbonization treatment on the precursor material to obtain the phosphorus-nitrogen double-doped resin-based hard carbon negative electrode material. The preparation method comprises the following steps: preparing a phosphorus-nitrogen double-doped resin-based precursor material, and preparing the phosphorus-nitrogen double-doped resin-based hard carbon negative electrode material. Through phosphorus-nitrogen double doping, the specific capacity, the cycling stability and the rate capability of the hard carbon material are effectively improved, and the problem that the theoretical capacity of a graphite negative electrode of a lithium ion battery is limited is solved; the prepared hard carbon negative electrode material has relatively high lithium ion storage capacity and excellent electrochemical performance, and is particularly suitable for a high-performance lithium ion battery; the preparation method of the material is simple and easy to implement, and has a good industrialization prospect.

The invention relates to the technical field of high polymer materials, in particular to a method for improving the heat resistance of melamine phenolic resin by using phthalonitrile, which comprises the following steps: uniformly mixing phthalonitrile resin powder and melamine phenolic resin powder at room temperature, and then curing and molding the uniformly mixed powder at 200-280 DEG C to obtain the heat-resistant melamine phenolic resin. The melamine phenolic aldehyde-nitrile group copolymer resin is obtained. According to the method for obtaining the melamine phenolic-nitrile resin with high thermal stability, high wear resistance and high mechanical property through copolymerization, not only can the thermal stability of the resin be greatly improved, but also the mechanical property can be enhanced, and the processing window of the melamine phenolic resin can be widened.

The present disclosure provides a polymerizable thermosetting compositions comprising monofunctional benzoxazine bearing unsaturated functional group, and a monophthalonitrile resin containing unsaturated or amine functional group. The compositions may be cured to form thermoset polymers having improved thermal and mechanical properties, such as a low melting and low viscosity monobenzoxazine. The cured thermoset polymers having excellent thermal and mechanical properties, such as high thermal stability, heat resistance, high char yield, and enhanced structural rigidity.

The invention relates to high-temperature-resistant and thermo-oxidative resin, a synthesis method and a preparation method of a composite material of the high-temperature-resistant and thermo-oxidative resin, and belongs to the technical field of functional polymer materials. The high-temperature-resistant and heat-oxygen-resistant resin is silicon and boron-containing phthalonitrile copolymerized and modified phenolic aldehyde type cyanate ester resin; wherein the molecular formula is shown in the specification.

The invention discloses a biomass furyl phthalonitrile monomer. The biomass furyl phthalonitrile monomer has a structure as shown in a formula 1. According to the biomass furyl phthalonitrile monomer provided by the invention, biomass furyl phthalonitrile resin can be prepared in a thermocuring manner; the raw material of the biomass furyl phthalonitrile monomer is a bio-based source, and the aromatic structure and strong polarity of the biomass furyl phthalonitrile monomer well maintain the thermal properties and mechanical properties of a resin system, so that the adhesive ability of the resin to an adhesive matrix and a reinforcement is improved; and the overall strength of a high-performance adhesive and a resin-based composite material can be improved.

The application belongs to the technical field of polymer materials, and discloses a modified asphalt for durable thin-layer pavement, a preparation method, application and wearing layer thereof; the modified asphalt comprises the following components in mass fraction: 100 parts of asphalt, 10-20 parts of thermoplastic elastomer, 2-5 parts of tackifier and an additive; the tackifier is phthalonitrile resin; the thermoplastic elastomer contains not less than 90 wt% of SBS; the modified asphalt is synergistically modified by the tackifier and the thermoplastic elastomer, so that the obtained modified asphalt has excellent high-temperature performance, low-temperature performance and aging resistance, and is particularly suitable for durable thin-layer pavement; and the wearing layer prepared by the modified asphalt has excellent fatigue durability.

The invention provides a preparation method and application of a polyimide dielectric film, and the method comprises the following steps: polymerizing a diamine monomer and an excessive dianhydride monomer in a polar solvent in a nitrogen atmosphere to obtain a polyamide acid solution; adding an end-capping reagent containing a phthalonitrile group and an amino group into the polyamide acid solution, and reacting to obtain a phthalonitrile group-terminated polyamide acid solution; adding a ring-closing agent into the phthalonitrile group-terminated polyamide acid solution to generate a phthalonitrile group-terminated polyimide solution, and settling, washing and drying the phthalonitrile group-terminated polyimide solution to obtain phthalonitrile group-terminated polyimide powder; polyimide powder is dissolved in a polar solvent, a wet film is prepared on a substrate in a coating mode, the wet film is heated, and the polyimide dielectric film is obtained.

An optical assembly as described herein may comprise a first optical component and a second optical component bonded to the first optical component with a phthalonitrile adhesive. The phthalonitrile adhesive is configured to withstand high temperatures with little or no effect on the alignment of the first and second optical components and / or the optical transmission between the first and second optical components. Methods of making an optical assembly may include bonding a first optical component to a second optical component using a phthalonitrile adhesive.

The invention discloses a metal organic optical waveguide material with lyochromism and application of the metal organic optical waveguide material in the field of information storage. The preparation method of the material comprises the following steps: mixing phthalonitrile and silver tetrafluoroborate according to a molar ratio of 0.005-70, then adding acetonitrile for ultrasonic dissolution, slowly volatilizing at room temperature, and obtaining the microcrystalline material after the solvent is volatilized. Placing the coordination polymer in a humid environment for 12 hours, wherein the structure of the coordination polymer is connected from a one-dimensional coordination polymer to a two-dimensional coordination polymer; then placing in an acetonitrile atmosphere for 20 hours to convert the structure from a two-dimensional coordination polymer to a one-dimensional coordination polymer; the structure conversion and color conversion cycle is reversible. According to the invention, not only is solvent-induced tunable photoluminescence realized, but also a color-tunable optical waveguide system is constructed, a miniature active optical waveguide system with high safety and high information density is developed by using the material, and the application of the material in the field of information storage is shown.

The invention relates to a preparation method of graphene oxide modified phthalonitrile resin, and belongs to the technical field of toughening and reinforcing of high-temperature-resistant resin. The preparation method of the graphene oxide modified phthalonitrile resin comprises the following steps: carrying out cyanation modification on the surface of graphene oxide by adopting aminated phthalonitrile; carrying out mechanical blending dispersion on the modified graphene and the phthalonitrile resin; and finally, heating and curing the resin to obtain a modified phthalonitrile resin cured product, or preparing a fiber-reinforced phthalonitrile resin-based composite material. According to the preparation method, cyanation modification is carried out on the graphene oxide, so that the compatibility of the graphene oxide and the phthalonitrile resin is improved, the dispersion effect and the toughening and reinforcing effect of the graphene oxide in the phthalonitrile resin are improved, and the mechanical property of the fiber-reinforced phthalonitrile resin-based composite material can also be improved.

To provide a production method for a phthalocyanine compound that enables high-purity production of a phthalocyanine compound having an ester side chain.SOLUTION: A method for producing a phthalocyanine compound comprises a step of mixing a phthalonitrile compound represented by general formula (1), a metal compound, and a compound represented by general formula (5), wherein in general formula (1), Z1 to Z4 each independently represent a hydrogen atom, a halogen atom, an alkoxy group, or the like, and at least one of Z1 to Z4 is a substituent represented by general formula (2); in general formula (2), L represents an alkylene or arylene group, and R represents an alkyl group or an aryl group; and in general formula (5), R is the same as R in general formula (2).SELECTED DRAWING: None

The present application relates to heat exchanger technical field, specifically to a kind of corrosion-resistant composite finned tube and its preparation process.The present application obtains flame retardant with allyl bisphenol A and 4-nitro phthalonitrile as main raw material.Then with four sulfur alcohol A, four sulfur alcohol B, 1,4-butanediol diacrylate as main raw material, curing agent is obtained.Finally, with epoxy resin E20, epoxy resin E12, polyether polyol, filler, flame retardant, curing agent, defoaming agent, accelerator and photoinitiator as raw material, epoxy resin coating is obtained;The epoxy resin coating is coated to the surface of finned tube, and the finished product is obtained.The finished product obtained by the present application has good flame retardancy, corrosion resistance and mechanical properties, so it has broad application prospect.

The invention discloses a modified phthalonitrile resin prepolymer with high thermal oxidation resistance and a preparation method of the modified phthalonitrile resin prepolymer. Specifically, the invention discloses an o-carborane modified phthalonitrile resin prepolymer, and the main raw material of the o-carborane modified phthalonitrile resin prepolymer is a phthalonitrile resin monomer. The prepared modified phthalonitrile resin prepolymer has improved thermal oxidation resistance, and can be widely applied to the fields of high and new technology industries such as aerospace, high-performance composite materials and the like.

The application relates to the technical field of sealing strips, and discloses a water-resistant rubber sealing strip for automobiles and a preparation method thereof. The water-resistant rubber sealing strip for automobiles comprises the following components in parts by weight: 100 parts of a ternary ethylene-propylene-diene rubber pretreatment, 10-16 parts of carbon black, 3-5 parts of a vulcanizing agent, 1-2 parts of a vulcanizing accelerator, 1-3 parts of a dispersing agent, 4-6 parts of stearic acid and 1-2 parts of an antioxidant; the ternary ethylene-propylene-diene rubber pretreatment comprises the following components in parts by weight: 50 parts of ternary ethylene-propylene-diene rubber, 12-22 parts of nitrile rubber, 4-12 parts of phthalonitrile resin, 0.5-1.2 parts of a curing agent and 6-15 parts of four acicular zinc oxide whiskers. The technical scheme can solve the problem of poor oil resistance of rubber sealing strips in the related art.

One embodiment of the present invention provides a method for preparing phthalonitrile compounds, which comprises: step (a), adding a mixture containing phthalic acid compounds and nitrile compounds to a first reaction part for reaction; step (b), transferring the product of the above step (a) to a second reaction part connected to the above first reaction part and reacting at 350° C. to 400° C.; and step (c), obtaining phthalonitrile compounds from a discharge part connected to the above second reaction part, wherein the length of the fluid flow direction of the above second reaction part is more than 10 times the square root of the average cross-sectional area perpendicular to the fluid flow direction.

The invention belongs to the technical field of precision grinding tool manufacturing, discloses a laser processing grinding wheel and a preparation method thereof, and aims to solve the problems that in the prior art, the bonding strength of a grinding material layer and a base body is weak, and harsh grinding requirements such as high-speed grinding, heavy-load grinding and composite material large-engagement synchronous grinding are difficult to meet. A laser machining grinding wheel comprises a grinding wheel base body and a grinding wheel abrasive layer. Inclined array blind holes are formed in the surface of the grinding wheel base body, and the grinding wheel abrasive layer is located on the surface of the grinding wheel base body and in the array blind holes. The raw materials of the grinding wheel abrasive material layer comprise amido modified titanate and phthalonitrile resin. According to the grinding wheel, the grinding material layer containing the phthalonitrile resin is subjected to 3D photocuring forming through the large-focus laser, the blind hole array is fully filled with the high-temperature-resistant, low-shrinkage and high-strength grinding material layer, and the grinding wheel product which is formed by high-strength combination of the grinding material layer and the base body and can be used at the high temperature for a long time is obtained.

A method for producing a phthalonitrile, the method comprising: a production reaction step in which ammonia, oxygen, and xylene are allowed to react in the presence of a catalyst to obtain a reaction product gas containing at least a phthalonitrile and urea; a collection step in which the reaction product gas is brought into contact with an organic solvent to obtain a collection solution; a distillation step in which the collection solution is distilled to separate the phthalonitrile and the organic solvent containing the urea; a water addition step in which water is added to the organic solvent containing the urea; and an aqueous phase separation step in which an aqueous phase containing the urea is separated from the organic solvent.

Separation and impurity removal equipment for phthalonitrile production belongs to the field of phthalonitrile production and comprises a temperature control mechanism and a stirring mechanism. The temperature control mechanism comprises a heat preservation seat, a circulating water pipe and a semiconductor chilling plate, the heat preservation seat is arranged on the side wall of the impurity removal box, a heat conduction plate is arranged in the heat preservation seat, the circulating water pipe penetrates through the heat conduction plate, and the semiconductor chilling plate is arranged on the outer side of the heat preservation seat; the stirring mechanism comprises a stirring rod and a spiral stirring blade, the stirring rod is arranged in the impurity removal box body, and the spiral stirring blade is arranged on the circumferential side wall of the stirring rod. The temperature control mechanism is arranged, the washing temperature in the impurity removal box body is maintained in the temperature control mechanism through a circulating water pipe, and when the washing temperature is rapidly increased due to the change of the environment temperature, rapid refrigeration is conducted through a semiconductor refrigeration piece, and phthalonitrile crystals are prevented from being decomposed; the phthalonitrile and the adsorption liquid in the impurity removal box body are turned over and mixed from bottom to top through the spiral stirring blades in the stirring mechanism, so that the layering or precipitation of the phthalonitrile is reduced, and the stirring is more uniform.

The invention belongs to the technical field of polymer materials, and specifically relates to a benzoxazine-type phthalonitrile monomer containing a siloxane chain segment and a preparation method thereof. The benzoxazine-type phthalonitrile resin is prepared by structural design, and the phenolic hydroxyl group formed by the ring-opening of the oxazine ring can promote the polymerization of the cyano group, realize the self-catalytic curing reaction of the cyano group, thereby reducing the curing temperature; the silicon-oxygen chain segment is introduced into the molecular structure, and the molecular chain mobility is improved by reducing the rotation energy barrier of the molecular chain, thereby reducing the melting point of the resin.

The application discloses a phthalonitrile resin with a siloxane chain structure, and the structure is shown in the following formula, wherein x is an integer of 1-50, y is an integer of 5-23, z is an integer of 5-23, and the molar ratio of the siloxane chain grafted with a benzoxazine monomer and the siloxane chain grafted with a phthalonitrile monomer is 1:0.9-1.1.In the application, the phthalonitrile resin takes siloxane as a main chain, and a side chain comprises a substituted benzoxazine structure and a phthalonitrile structure.Compared with a petroleum-based phthalonitrile resin without siloxane, the resin of the application can still maintain high heat resistance after curing, and the processing fluidity is significantly improved, the melt viscosity is reduced, the curing temperature is reduced, the material toughness is effectively improved, and the resin is suitable for fields such as aerospace, advanced composite materials and electronic packaging which have a synergistic requirement for heat resistance and processability.