16 results about "Diazanaphthalene" patented technology

The invention relates to the technical field of preparation of new materials, in particular to a hexaaza-naphthyl polymer nanosheet / rod array composite material as well as preparation and application thereof. The preparation method comprises the following steps: dissolving a substrate material and a catalyst, and uniformly mixing to obtain a mixture; sequentially adding an amine monomer and a ketone monomer into the mixture, and uniformly mixing to obtain a reaction mixed solution; and finally, transferring the reaction mixed solution into a reaction kettle, and carrying out condensation polymerization to obtain the hexaaza-naphthyl polymer nanosheet / rod array composite material. The hexaaza-naphthyl polymer nanosheet / rod array composite material (with high specific surface area, rapid mass transfer path and clear and rich active sites) with a controllable structure is successfully prepared by a simple and efficient solvent-mediated interface anisotropic growth method; according to the method provided by the invention, the utilization rate of active sites can be increased, the conductivity is improved, and the method has wide application potential in the fields of energy, environment and cultural relic protection such as batteries and electro-catalysis.

This invention discloses a continuous fiber reinforced thermoplastic resin-based prepreg, which is prepared by sequentially impregnating continuous fibers through a first impregnation and a second impregnation, followed by drying. The first impregnation solution contains a modifier, which includes an auxiliary thermoplastic resin and an auxiliary thermoplastic resin containing crosslinking groups. The second impregnation solution contains a bis(diazanaphthone)-structured thermoplastic resin, a soluble thermoplastic resin toughening agent, and a block copolymer. The auxiliary thermoplastic resin is a soluble amorphous thermoplastic resin with a glass transition temperature of 200°C or higher but lower than that of the bis(diazanaphthone)-structured thermoplastic resin. This invention employs a two-step impregnation method, using an auxiliary thermoplastic resin and an auxiliary thermoplastic resin containing crosslinking groups as modifiers for the first impregnation. The modifier's molecular chain flexibility is superior to that of the bis(diazanaphthone) resin, which facilitates preferential wetting of the continuous fiber surface and crosslinking anchoring.

The invention discloses a Cu3 (HHTT) 2MOF film and a preparation method thereof, and belongs to the technical field of metal organic framework (MOF) material preparation, and the preparation method comprises the following steps: preparing a copper salt aqueous solution, preparing a hexahydroxy tetraazaphthalene organic solution, mixing the hexahydroxy tetraazaphthalene organic solution with a part of the copper salt aqueous solution to obtain a mixed solution, immersing a substrate in the residual copper salt aqueous solution, and then immersing the substrate in the copper salt aqueous solution to obtain the Cu3 (HHTT) 2MOF film. And then immersing in the mixed solution for standing reaction, taking out the substrate, and removing unreacted substances, water and the organic solvent to obtain the Cu3 (HHTT) 2MOF film on the substrate. The method has the advantages of mild reaction conditions, simplicity and convenience in operation, low cost, good repeatability and the like, uniform growth of the film is facilitated, and the prepared film has a good and complete crystal structure, is regular and uniform in structure, high in purity, good in crystallinity and stability and flat and smooth in surface, and is favorably applied to the fields of photoelectricity, sensing and the like.

The application discloses a 2-phenyl-4-pinacol boron-based-2,1-boronazanaphthalene, a 2-phenyl-4-pyrimidyl-2,1-boronazanaphthalene compound and a preparation method thereof, and belongs to the technical field of organic synthesis chemistry. The method is based on a copper-catalyzed selective dehydrogenation boronation reaction strategy, 2-phenyl-2,1-boronazanaphthalene and pinacol diboron ester are used as raw materials, CuCl is used as a catalyst, 4,5-bis(diphenylphosphino)-9,9-dimethyloxyanthracene is used as a ligand, 2-adamantanone is used as an additive, p-xylene is used as a solvent, and 2-phenyl-4-pinacol boron-based-2,1-boronazanaphthalene is efficiently obtained. The 2-phenyl-4-pinacol boron-based-2,1-boronazanaphthalene compound synthesized by the application can be used as a key intermediate, is efficiently converted through a C-B bond, and is convenient for synthesizing a 2-phenyl-4-pyrimidyl-2,1-boronazanaphthalene compound, thereby providing a new way for functional modification of boronazacyclic compounds.

The invention discloses a modified PETG material and application thereof in preparation of a heat-resistant container, and the modified PETG material comprises the following raw materials by mass: 80-97% of PETG, 0.5-5% of a phthalazinone diphenol monomer, 0.5-5% of a styrene-maleic anhydride copolymer, 1-3% of a compatilizer, and 1-2% of nano-silica. Wherein acid anhydride in the styrene-maleic anhydride copolymer can be subjected to a ring-opening esterification reaction with phenolic hydroxyl groups of the phthalazinone diphenol monomer, and the formed cross-linked polymer can endow the modified PETG material with excellent high-temperature resistance (the thermal deformation temperature reaches 130 DEG C or above) and a rigid characteristic (the Young modulus reaches 3 GPa or above); and the nano silicon dioxide is beneficial to improving the good surface hardness (the surface hardness reaches 2H) of the modified PETG material.

The invention discloses antibacterial polyaryletherketone and a preparation method thereof, and belongs to the technical field of polymer synthesis. The preparation method comprises the following steps: by taking phthalazinone (DHPZ), brominated phthalazinone (DHPZ-Br) and 4, 4 '-difluorobenzophenone (DFK) as raw materials, carrying out ternary polymerization reaction in the presence of alkali to generate PPEK-B; and then reacting with OIT in the presence of a catalyst and alkali to generate PPEK-OIT. The proportion of the antibacterial units can be adjusted at will, and the composite material can be independently used as an antibacterial material; and a high polymer material with all OIT antibacterial units can also be generated, and is added into other high polymer materials as an antibacterial agent.

A method of removing a calcareous material from sand while processing the sand includes mining sand at a location proximate a wellbore extending into an earth formation, and contacting the sand with an aqueous treatment fluid to remove calcareous materials from the sand and form treated hydraulic fracturing sand, the aqueous treatment fluid including a corrosion inhibitor composition. The corrosion inhibitor composition includes an alkenylphenone, and a substituted 1-azanapthalene. Related methods of inhibiting corrosion and of sand processing equipment during processing of hydraulic fracturing sand and removing calcareous materials from sand are also disclosed.

The invention relates to the technical field of wave-transparent materials, in particular to wave-transparent resin for an aircraft equipment compartment and a preparation method of the wave-transparent resin. The method comprises the following steps: reacting 5-bromine-2-fluorine-trifluorotoluene with chirality-1, 1 '-co-2-naphthol under the protection of nitrogen to obtain a chiral monomer, polymerizing the chiral monomer with biphenyl phthalazinone through an initiator to obtain a prepolymer, and finally terminating with 4-nitrophthalonitrile to obtain the target resin. According to the method, regular accumulation of molecules is destroyed by mixing 1, 1 '-bi-2-naphthol with different configurations, and the low polarity of-CF3 and a rigid framework of biphenyl phthalazinone are combined, so that the dielectric property and the thermal stability of the resin are cooperatively regulated and controlled. The obtained wave-transparent resin is low in dielectric constant and loss, high in thermal decomposition temperature and glass transition temperature, excellent in mechanical property and high-temperature retention rate, low in softening point and good in solubility, can be easily compounded and molded with quartz fiber cloth, is suitable for preparation of wave-transparent composite materials for aircraft equipment cabins, and meets the requirements of broadband high-temperature service.

The invention relates to the technical field of membrane separation, in particular to a phthalazinone copolyether sulfone membrane which is formed by copolymerization of phthalazinone diphenol, dichlorodiphenyl sulfone and biphenol, the molecular structure of the phthalazinone copolyether sulfone membrane comprises sulfonyl and phthalazinone structural units, and the molar percentage of the phthalazinone diphenol is 20-40%. Along with the increase of the content of the phthalazinone structure in the phthalazinone copolyethersulfone, finger-shaped pores in the hollow fiber membrane disappear and become spongy pores, the membrane structure becomes compact, the surface of the hollow fiber membrane becomes a loose and porous structure, the hydrophilicity of the hollow fiber membrane is improved, the water contact angle of the hollow fiber membrane is reduced from 71.5 degrees to 58.5 degrees, and the water contact angle of the hollow fiber membrane is reduced from 71.5 degrees to 58.5 degrees. The porosity of the hollow fiber membrane is reduced, the water flux is firstly increased and then reduced, and the breaking strength of the membrane is improved.

The application discloses a continuous fiber reinforced bisnaphtholone structure thermoplastic resin based prepreg, and raw material compositions for preparing the prepreg include, in mass fraction, continuous fibers, bisnaphtholone structure thermoplastic resin, semi-crystalline thermoplastic resin and block copolymer; the molecular chain of the block copolymer includes bisnaphtholone structure thermoplastic resin repeating units and semi-crystalline thermoplastic resin repeating units, or naphthalene-coupled biphenyl structure polyarylene ether repeating units and semi-crystalline thermoplastic resin repeating units. The application adds semi-crystalline thermoplastic resin, and simultaneously introduces block copolymer containing bisnaphtholone repeating units or naphthalene-coupled biphenyl structure polyarylene ether repeating units and semi-crystalline thermoplastic resin repeating units in the molecular chain, so that the porosity of the prepreg is low, and the mechanical properties of the composite material prepared from the prepreg are excellent and the interlayer combination is good.

A method of reducing corrosion within a wellbore includes placing a wireline including a perforating gun in a wellbore, the wellbore extending through an earth formation and including a casing extending through the earth formation, the wireline including zinc, discharging the perforating gun to form perforations through the casing and in the earth formation surrounding the casing proximate the at least one perforating gun, flowing a fracturing fluid including one or more proppants through the perforations and into the earth formation to open fractures in the earth formation with the one or more proppants, introducing a flushing fluid into the wellbore to displace the fracturing fluid, and flowing a corrosion inhibitor composition into the wellbore and through the perforations with at least one of the fracturing fluid and the flushing fluid. The corrosion inhibitor includes an alkenylphenone, and a substituted 1-azanapthalene.

The present disclosure provides (2R,4aR,7R)-3-acryloyl-12-chloro-10-fluoro-11-((S)-2-fluoro-6-hydroxyphenyl)-2-methyl-7-((S)-1-methylpyrrolidin-2-yl)-2,3,4,4a,6,7-hexahydro-8-oxa-3,5a,9,13c-tetraazanaphtho[3,2,1-de]anthracen-5(1H)-one (hereinafter referred to as "Compound I") or a pharmaceutically acceptable salt thereof and a crystal form thereof. The present disclosure also provides a pharmaceutical composition comprising at least one of Compound I or a pharmaceutically acceptable salt thereof and a crystal form thereof, and a method for preparing the crystal form. The present disclosure further provides the use of Compound I or a pharmaceutically acceptable salt thereof and a crystal form thereof or a pharmaceutical composition comprising at least one of Compound I or a pharmaceutically acceptable salt thereof and a crystal form thereof in the prevention and / or treatment of a disease, particularly a disease mediated by KRAS G12C mutation. The crystal form of Compound I or a pharmaceutically acceptable salt thereof of the present disclosure is excellent in hygroscopicity, solubility and stability.

Disclosed are a halogen-free flame-retardant polyurethane elastomer and a preparation process therefor. Phenyl dichlorophosphate and 4-(4-hydroxyphenyl)-2,3-diaza(4-nitrophenyl)naphthalen-1-one undergo a phosphate esterification reaction, followed by reduction with a Pd / C catalyst to yield a novel phosphate-bis-diazanaphthalone chain extender. Introducing a highly thermally stable bis-diazanaphthalone rigid fused-ring structure into a polyurethane molecular chain significantly increases the thermal decomposition temperature of the polyurethane elastomer; moreover, the phosphate-bis-diazanaphthalone chain extender contains a phosphate-based flame-retardant structure that forms a nitrogen-phosphorus halogen-free flame retardant with a diazanaphthalone nitrogen-containing heterocycle, achieving a condensed-phase flame-retardant effect; thus, the total heat release and the peak heat release rate of the polyurethane elastomer are reduced, and excellent flame-retardant performance is achieved.

The invention discloses an iron-based hexaaza-naphthalene two-dimensional metal organic framework material as well as a preparation method and application thereof.The iron-based hexaaza-naphthalene two-dimensional metal organic framework material is characterized in that hexaaza-naphthalene is taken as a framework, a sulfur bridge bond Fe-S is taken as a linking group, and a two-dimensional layered material with a highly conjugated structure is constructed; a two-dimensional metal organic framework material is constructed by simulating part of electronic structures and reaction characteristics of iron sites in a complex biological cluster compound, and a two-dimensional metal organic framework material catalyst with nitrogenase related functions is developed; in the material, iron ions are used as a catalytic activity center, can effectively adsorb and activate nitrate ions, and selectively reduce the nitrate ions into ammonia; the catalyst shows excellent catalytic activity, Faraday efficiency and cycling stability in a nitrate reduction reaction. The preparation method of the material is simple and mild, the cost of the raw materials is low, the use of noble metals is avoided, and an efficient, economical and environment-friendly novel catalyst is provided for ammonia preparation through electro-catalysis of nitrate reduction.