8 results about "Diazanaphthalene" patented technology

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 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 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.

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 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.