426 results about "Phthalonitrile" patented technology

The present invention belongs to the field of high molecular synthetic material, and is especially one kind of double end group o-phthalonitrile-benzo oxazine resin, and its solidified substance and preparation process. The present invention provides one kind of 4-aminophenoxyl-o-phthalonitrile monomer and the double end group o-phthalonitrile-benzo oxazine resin therewith. The double end group o-phthalonitrile-benzo oxazine resin has excellent curing reaction activity, low temperature curing performance similar to that of benzo oxazine resin, heat resistance similar to that of o-phthalonitrile resin, greatly lowered curing temperature and capacity of use in high temperature condition. The preparation process is simple and controllable, and the product has excellent application foreground.

The invention discloses a covalence triazine organic polymer visible-light-driven photocatalyst and the preparing method and application thereof and belongs to the technical field of material preparation and photocatalysis. According to the method, normal-temperature liquid-phase polymerization is adopted, para-phthalonitrile serves as the monomer, trimerization is conducted under the catalysis of trifluoromethanesulfonic acid, and then the covalence triazine organic polymer visible-light-driven photocatalyst is prepared. By means of the photocatalyst, visible-light reaction is achieved, hydrogen production through water photolysis can be achieved without obvious inactivation, and organic pollutants in waste water can be effectively degraded. The preparing condition is mild, production cost is low, yield is high, actual production requirements are met, and application potential is great.

The invention discloses an aromatic diamine containing o-phthalonitrile side group. The structure formula of the aromatic diamine is shown as the right formula. The invention also discloses a method for preparing the aromatic diamine and polyimide and daiamid which are prepared by taking the aromatic diamine containing the o-phthalonitrile side group as one of raw materials. The o-phthalonitrile side group in the aromatic diamine is positioned on the side chain, thereby adjusting the degree of crosslinking with adjusting the polymer molecular weight and widening the application of the polyimide and the daiamid in a thick-wall composite material or a composite material element with a complicated shape and the fields of membrane material and fiber.

The invention discloses a pyrrole aromatic diamine containing a phthalic nitrile structure and a preparation method thereof. 2-bromoacetophenone is taken as a raw material to prepare 4-(2,5-bi(4-aminophenyl)-pyrryl) phthalonitrile by reaction of four steps, namely condensation, closed loop, nitration and reduction. The aromatic diamine disclosed by the invention is high in purity, and stable at room temperature, and is an important monomer component for preparing a plurality of polyimides, and an application of the polyimides in the fields such as a high-performance fiber, organic luminescent materials, a functional coating, a special adhesive and the like is expanded.

The precent invention discloses a poly-o-phthalonitrile resin and a preparetion method. After the solution blending, fusion blending or physical blending of 1 to 99 percent of o-phthalonitrile derivative with amino group or hydroxyl group and 1 to 99 percent of polyethernitrile with amino group or hydroxyl group, or 1 to 99percent of o-phthalonitrile derivative with amino group or hydroxyl group and 1 to 99 percent of o-phthalonitrile derivative, or 1 to 99 percent of polyethernitrile with amino group or hydroxyl group and 1 to 99 percent of o-phthalonitrile derivative, or 1 to 98 percent of o-phthalonitrile derivative with amino group or hydroxyl group, 1 to 98 percent of polyethernitrile with amino group or hydroxyl group and one to ninety eight percent of o-phthalonitrile derivative, the compound is solidified, so that the poly-o-phthalonitrile resin is prepared. Because the invention uses the o-phthalonitrile derivative with amino group or hydroxyl group or / and the polyethernitrile to prepare the poly-o-phthalonitrile resin, the performance of the resin can be regulated and controlled in a wide range, and the tenacity of the poly-o-phthalonitrile resin can also be increased, thus broadening the application field of the resin. The invention also has the advantages of simple steps and low cost.

The invention belongs to the technical field of a high polymer material, and in particular relates to a bi-phthalonitrile prepolymer as well as a preparation method and application thereof, a bi-phthalonitrile prepolymer/epoxy resin copolymer and a preparation method thereof as well as a bi-phthalonitrile prepolymer/epoxy resin cured material. According to the invention, the structural formula ofthe bi-phthalonitrile prepolymer is shown in a formula I described in the specification; and the bi-phthalonitrile prepolymer can be used as a high polymer material flame retardant and is copolymerized with epoxy resin so as to prepare the bi-phthalonitrile prepolymer/epoxy resin copolymer and the bi-phthalonitrile prepolymer/epoxy resin cured material, wherein the flame retardant property of theobtained bi-phthalonitrile prepolymer/epoxy resin cured material is greatly improved, and simultaneously, the good heat resistance and physical properties such as high strength and high modulus of the obtained bi-phthalonitrile prepolymer/epoxy resin cured material are also ensured, namely, the comprehensive properties of the obtained bi-phthalonitrile prepolymer/epoxy resin cured material are excellent.

The invention belongs to the high molecular synthetic material field. The invention relates the double-end phthalonitrile, resin, condensate, which are made by phthalonitrile, and preparing method. The invention uses 4-nitro-o-phthalonitrile and dihydric phenol as reaction integral to get double-end phthalonitrile. The double-end phthalonitrile and diamine are used to react in aromatic amine solution at 140-200Deg.C to get phthalonitrile resin which possesses phthalocyanine ring structure. The resin is cured at 220-280Deg.C, then carried out heat treatment at 320-370Deg.C to get phthalocyanine condensate which possesses high heat stability. The invention has the advantages of good heat stability and fire-retardancy.

The invention relates to an electrolyte for a 4.5 V lithium ion battery. The electrolyte comprises the following components in percentage by weight: 80%-89% of organic solvents, 10%-15% of lithium salt and 0.1%-5.0% of additives, wherein the additives are nitrile compounds, and the nitrile compounds include one of butanedinitrile, adiponitrile, sebaconitrile, acrylonitrile, cyclohexyl nitrile, 1,2-cyclohexyl dinitrile, phthalonitrile and cyanopyridine. According to the invention, the additives effectively improve the high-pressure cycle property of the lithium ion battery, can enhance the voltage of a common electrolyte to 4.5 V and are obvious in effect. The electrolyte disclosed by the invention is difficult to decompose under high voltage of 4.5 V, obviously enhances the cycle property of the lithium ion battery, and less influences the battery capacity.

The invention discloses a PEN and Fe(CO)5 composite magnetic material and a preparation method thereof, and belongs to the technical field of magnetic polymer materials. PEN serves as an organic matrix, Fe(CO)5 serves as an inorganic filler, and the composite magnetic material is obtained after blending and prilling. Firstly, the Fe(CO)5 is subjected to surface modification, and a layer of phthalonitrile prepolymer is generated on the surface of the Fe(CO)5; due to a layer of organic matters rich in cyan coated on the surface, the Fe(CO)5 after surface modification can improve the interfacial adhesive force between the Fe(CO)5 inorganic filler and the PEN organic matrix, so that the PEN and the Fe(CO)5 are provided with a high-strength magnetic property while maintain an excellent mechanical property of the PEN after composition. According to the magnetic material and the preparation method thereof, the Fe(CO)5 can be filled as much as possible on the premise that the good mechanical property of the composite material is maintained, so that magnetic saturation strength of the composite material can be improved, the compatibility of inorganic fillers with polymers is improved, and processing defects are overcome.

The invention discloses a porous phthalonitrile resin and a preparation method thereof, and application of the resin. The resin is prepared by blending the following composition and carrying out reaction and curing. The composition comprises the following components in parts by weight: 20-100 parts of phthalonitrile, 1-80 parts of pore-forming agent, 1-20 parts of catalyst and 2-20 parts of optional thermoplastic high molecule. The phthalonitrile resin forms pores due to the decomposition of the pore-forming agent in the curing process, and thus, the invention provides a simple environment-friendly high-efficiency method for preparing the porous material. The appropriate phthalonitrile matrix and pore-forming agent can be selected to implement the control on the pore structure. The porous phthalonitrile resin disclosed by the invention has excellent heat stability and mechanical properties, can be used as a high-performance composite material resin matrix, and has application values in the field of aerospace.

The invention provides a bi-phthalonitrile resin glass fiber composite material toughened by poly(arylene ether nitrile) and a preparation method thereof, belonging to the macromolecular material technical field. The glass fiber composite material comprises a single-layer or multilayer glass fiber cloth and a copolymer of poly(arylene ether nitrile) and bi-phthalonitrile resin distributed on the surface of the single-layer glass fiber cloth or among the multilayer glass fiber cloth, wherein, the mass ratio of the copolymer of the poly(arylene ether nitrile) and the bi-phthalonitrile resin to the glass fiber cloth is 4:6; and the mass ratio of the poly(arylene ether nitrile) and the bi-phthalonitrile resin is (2-6): (34-38). The preparation method comprises the following steps: fusing and mixing the bi-phthalonitrile resin and poly(arylene ether nitrile) powder, cooling and pulverizing into powder, spraying the powder on the surface of the glass fiber cloth, laminating, molding by compression, and finally carrying out thermal treatment to obtain the composite material. In the invention, the bending strength of the bi-phthalonitrile resin glass fiber composite material toughened by the poly(arylene ether nitrile) is 500-650MPa, and the initial decomposition temperature is above 450 DEG C; and the composite material can be widely applied to the high-tech fields such as aerospace composite materials, machinery, electronic engineering and the like.

The invention belongs to the technical field of high molecular materials, in particular relates to a bisphthalonitrile-amino phenoxy phthalonitrile copolymer and condensate as well as a glass fiber composite material and a preparation method thereof. The bisphthalonitrile-amino phenoxy phthalonitrile copolymer, provided by the invention, is obtained by fusing and copolymerizing bisphthalonitrile and amino phenoxy phthalonitrile at the temperature of 200-220 DEG C. The method adopts the amino phenoxy phthalonitrile with low cost to obtain the bisphthalonitrile-amino phenoxy phthalonitrile copolymer and the condensate; and the obtained condensate has excellent flame retardance (oxygen index is more than 36 percent); the bending strength achieves 88-130 MPa; the original decomposition temperature is above 478 DEG C; and the carbon residue rate at the temperature of 800 DEG C is more than 65 percent.

An aromatic ether oligomer or polyaromatic ether comprising the formula:

wherein Ar is an independently selected divalent aromatic radical; formed by reacting a dihydroxyaromatic with a dihaloaromatic; and wherein the reaction is performed in the presence of a copper compound and cesium carbonate. The polyaromatic ether is formed when neither the dihydroxyaromatic nor the dihaloaromatic is present in an excess amount. The aromatic ether oligomer is formed by using an excess of either dihydroxyaromatic or dihaloaromatic. A phthalonitrile monomer comprising the formula:

formed by reacting a 3- or 4-nitrophthalonitrile with a hydroxy-terminated aromatic ether oligomer. A thermoset formed by curing the phthalonitrile monomer. Processes for forming all the above.

The invention belongs to the field of synthesis of polymer materials and specifically relates to phthalonitrile-terminated polyimide resin containing a phthalazinone structure, a cured product and a preparation method thereof. The phthalonitrile-terminated polyimide resin containing the phthalazinone structure is prepared by taking 4-(3-aminophenoxy) phthalonitrile as a terminating agent and carrying out solution nucleophilic substitution reaction. The method has simple steps and is convenient and feasible. The polyimide resin shows great solubility in commonly used polar solvents, can be processed and molded by a variety of ways, and simultaneously has great curing reaction activity. The cured product of the polyimide resin containing the phthalazinone structure with dimension stability and high thermal stability can be obtained by carrying out pre-curing on the resin at the temperature of 150-300 DEG C and carrying out thermal treatment at the temperature of 350-400 DEG C in the presence of aromatic diamine. The phthalonitrile-terminated polyimide resin containing the phthalazinone structure can be used for preparing coatings, insulating paint, sizing agents, thin films, high-performance composite materials and the like and has wide application prospects.

The invention relates to a synthesis method for cross-linked poly(arylene ether nitrile) and a preparation method of a high-temperature-resistant dielectric film thereof, belonging to the field of special high-polymer materials. Starting from the main molecular structure design of poly(arylene ether nitrile), hydroxyl-terminated poly(arylene ether nitrile) is synthesized by using hydroquinone withan amino-containing side chain as one of reaction monomers, and then phthalonitrile is introduced to the tail end of a molecular main chain to synthesize the cross-linkable poly(arylene ether nitrile). A cross-linked poly(arylene ether nitrile) film can be obtained by adopting curtain-coating film forming and low-temperature self-cross-linking strategies. The obtained film has excellent thermal properties, mechanical properties and dielectric properties, and can be used as a high-temperature-resistant dielectric film. The preparation method disclosed by the invention is simple in process andeasy for industrial operation, and the application range of the poly(arylene ether nitrile) can be widened.

The invention relates to a phthalonitrile resin prepreg, a composite material and a preparation method of the composite material. A mode for pre-heat treatment of the phthalonitrile prepreg is adoptedfor controlling the viscosity state of the prepreg during solidification. At the same time, a segmented solidification process is adopted, after auxiliary materials are used for conducting vacuumingsolidification on a product at the temperature lower than or equal to 250 DEG C, post-treatment is conducted at the temperature higher than 300 DEG C without auxiliary materials, so that the limitations of the viscosity of the prepreg and the temperature resistance of the auxiliary materials to the molding process of the phthalonitrile composite material are overcome, and complex components of thephthalonitrile composite material with high temperature resistance, excellent mechanical properties and good molding quality can be industrially produced. The phthalonitrile resin prepreg with good processability, high molding quality, high temperature resistance and excellent mechanical properties is provided and can be widely used in aerospace engineering and ship engineering.

Compounds having the formulas below. R is an aromatic-containing group. Each M is an alkali metal. Each m is a positive integer. The value of n is a positive integer. The value p is 0 or 1. If p is 0 then n is 1. A thermoset made by curing a composition containing the below phthalonitrile monomers.

A method of reacting a diphenyl acetylene compound with an excess of an aromatic diol in the presence of an alkali metal carbonate to form the above oligomer. A method of reacting a phenoxyphthalonitrile with an acetylene compound to form the phthalonitrile monomer below.