14 results about "Imide" patented technology

The invention discloses polymer functional graphene and a preparation method and application thereof. Graphene is connected with a polymer through the combination of at least one of imide, amide, ester groups and amidogen, wherein the polymer is a polymer at least containing one benzene ring and with the molecular weight of 200-500,000 and interacts with the graphene through covalent bonds, hydrogen bonds and/or pi-pi conjugation. The polymer functional graphene is excellent in dispersion property in non-polar solvents and excellent in dispersion stability, and cannot precipitate after long-time storage for multiple months; according to the adopted preparation method, the polymer with amidogen, hydroxyl and carboxyl reacts with epoxy, hydroxyl and the like on the graphene and then is subjected to covalent grafting on the surface of the graphene, and the grafting rate of the polymer reaches 30% or above. In addition, the obtained polymer functional graphene can be widely applied to lubricating oil, plastic, rubber, paints, adhesives, fibers and other fields, and has potential application value.

The invention discloses benzoperylene imide derivatives, and a preparation method and application thereof. The structural formula of the benzoperylene imide derivatives is disclosed in the specification. The benzoperylene imide derivatives are prepared by carrying out multiple reactions on the initial raw material 3,4,9,10-perylene tetracarboxylic acid anhydride. The benzoperylene imide derivatives have strong blue light absorptivity, the molar absorption coefficient at the maximum absorption wavelength reaches 50000 mol<-1>cm<-1> above, the benzoperylene imide derivatives have no absorption in other visible light regions within the range of 500-800nm; and the spectrum properties of the derivatives can be utilized to prepare the blue light absorbing material which is applicable to the field of daily high-energy short-wave radiation prevention, such as mobile phone screen anti-blue-light coatings, eyeglass anti-blue-light coatings, paper anti-blue-light painting and the like.

A transparent polyimide film, prepared from a copolymerized polyamide acid according to a chemical cyclization method, is provided. The copolymerized polyamide acid requires at least a semi-aromatic polyamide acid, and the semi-aromatic polyamide acid is formed by reacting cyclobutane-1,2,3,4-tetracarboxylic dianhydride (CBDA) and 2,2′-bis(trifluoromethyl)diaminodiphenyl (TFMB). The molar number of dianhydrides of the semi-aromatic polyamide acid is more than 20% of the total molar number of anhydrides of the copolymerized polyamide acid, so that the transparent polyimide film has a light transmittance greater than 80%, a chroma b* less than 5, and a CTE less than 35 ppm/° C.

The invention belongs to the technical field of solid electrolyte membranes for all-solid-state lithium batteries, and particularly relates to an application of a functionalized quantum dot compositesolid electrolyte membrane to the field of the all-solid-state lithium batteries. The functionalized quantum dot composite solid electrolyte membrane is prepared by selecting polyethylene oxide (PEO)as a polymer matrix, performing co-mixing and microwave-assisted reaction on polyethylene glycol diglycidyl ether (PEGDGE), diethylenetriamine and a citric acid aqueous solution to prepare PEGDGE functionalized carbon quantum dots as fillers, co-mixing PEGDGE functionalized carbon quantum dot dispersion liquid, Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and the PEO to prepare a membrane casting solution, and performing a casting method. The prepared functionalized quantum dot composite solid electrolyte membrane shows more excellent lithium ion conductivity and mechanical property compared with a traditional PEO electrolyte membrane.

The utility model discloses a heat-resistant vinyl aromatic monomer copolymer compounding method. The method used amine in the axe-type reaction device as the amine imide agent and enables the vinyl aromatic monomer - maleic anhydride unit opening ring of the maleic anhydride copolymer to become the maleic acid amide unit in the organic solution system; and then the vinyl aromatic monomer is arranged in the axe-type reaction device or in a exhaust twin-screw extruding device for reaction. Then the vinyl aromatic monomer is gotten rid of organic solution and is dried to generate heat-resistant vinyl aromatic monomer copolymer. The heat-resistant vinyl aromatic monomer copolymer generated in the method is of good anti heat resistance, thermal stability, processing mobility as well as compatibility with polar material.

The invention discloses novel rubber good in oil resistance. The novel rubber comprises 15-35 parts of chlorinated ethylene propylene rubber, 20-30 parts of butadiene-acrylonitrile rubber, 25-40 parts of fluoride rubber, 3-7 parts of zinc oxide, 5-10 parts of calcium borate, 3-8 parts of magnesium methacrylate, 10-15 parts of white carbon black, 20-40 parts of paraffin, 12-20 parts of bismaleimide resin, 15-28 parts of phenol-urea-formaldehyde copolycondensation resin, 2-7 parts of 2-(p-benzyl-chloride-sulfhydryl-thioxo) benzimidazole and 15-22 parts of anti-aging agent. The novel rubber is prepared through a process of plastication, mixing, vulcanization, drying, cooling and standing and the like. According to the prepared novel rubber, the use of a rubber material in the environment filled with oil is met, and original rubber performances are not affected. The oil resistance (the expansion rate after oil soaking) of the novel rubber is 6.5-8.5%, the heat-resistant coefficient (the coefficient of thermal aging) is 0.61-0.78, the air tightness is 2.5-2.8 m2/s.Pa, and the tear resistance is 58-63 kN.m.

The invention discloses an anti-freckle skin care product, which is prepared from the following ingredients including phenylethyl resorcinol, 4-butyl-resorcino, 1-methylhydantoin-2-imide, paeonol, paeonol derivatives and oat alkaloid derivatives. In the skin care product, the phenylethyl resorcinol, the 4-butyl-resorcino, the 1-methylhydantoin-2-imide, the paeonol, the paeonol derivatives and theoat alkaloid derivatives are compounded; the generation of melanin can be effectively inhibited; the pigment sedimentation can be reduced. Meanwhile, through the anti-oxidization capability of the paeonol, the oxidization of ingredients of the phenylethyl resorcinol and the like can be effectively inhibited; the product stability is improved. Through the anti-inflammatory and anti-stabbing-pain effect of the oat alkaloid, the irritation caused by the phenylethyl resorcinol derivatives can be effectively relieved; the product is mild and non-irritative on the skin. Compared with the existing anti-freckle product, the anti-freckle skin care product has the more obvious effect in aspects of freckle removal and whitening. The freckle can be fundamentally removed; the freckle generation can beprevented; the product is mild and non-irritative on the skin.

The invention discloses selenium-substituted benzodipyrene imide and synthesis method as well as application to a solar battery. The synthesis method is characterized in that: perylenetetracarboxydianhydride is taken as a raw material for preparing anhydride perylene bisimide dimer anhydride through butyl tetracarboxy perylene; different alkyl chain-substituted and selenium-substituted benzodipyrene imide can be prepared easily and simply through an anhydride intermediate. The acceptor molecule has superior photoelectric property, can be applied to organic solar battery, and has simple requirement on device structure, and the photoelectric conversion efficiency under the condition of no optimizing manners such as solvent additive, thermal annealing and the like can reach up to 5.17 percent.

The invention relates to high-temperature electrolyte of a lithium ion battery. The high-temperature electrolyte is characterized by consisting of the following components: component A, namely 12-16 percent of lithium salt, component B, namely 81-87 percent of organic solvent component C, namely 1.5-5 percent of ammonium salt. Because lithium bi(trifluoromethylsulfonyl)imide substances are added into the electrolyte, the phenomena that the structure of an anode material is damaged at high temperature and under high pressure and metal ions are deposited on an electrode on the surface of a cathode can be reduced to a certain degree by the lithium salt. Therefore, decomposition of the electrolyte on the surfaces of the anode and the cathode is effectively reduced, and the service and storage performances of the lithium ion battery in a high-temperature environment are improved.

A fluorinated imide salt compound of the present invention is a compound represented by General Formula (1). In General Formula (1), m represents 1 or 2, n represents an integer from 1 to 4, α represents 1 or 2, and X^α+ represents an α-valent metal ion, a primary ammonium ion, a secondary ammonium ion, a tertiary ammonium ion, a quaternary ammonium ion, or NH₄⁺.

The invention relates to a low-melt-viscosity thermosetting polyimide precursor suitable for resin transfer molding (RTM) and a preparation method of the precursor. The method comprises the followingsteps: commercial binary acid anhydride is used as a basic monomer unit, the commercial binary acid anhydride is combined with a plurality of active monomers to prepare a diaminobisimide macromonomer,the diaminobisimide macromonomer is used as diamine to react with a monoanhydride compound containing a carbon-carbon unsaturated bond, imidization is performed, and therefore the imide oligomer having low melt viscosity, a polymerization degree of 1 and a molecular weight distribution index of 1 is obtained. According to the preparation method provided by the invention, the thermosetting polyimide precursor prepared by the method has a thermal decomposition temperature of higher than 500 DEG C, the melt viscosity of 0.3-0.6 Pa*s, and a resin processing window temperature range from 80 DEG Cto 160 DEG C, can satisfy requirements of the RTM process; and the design idea proposed by the invention can provide technical support for mass production of aerospace polyimide resin composite materials, and provides a possibility for further deepening a wide application of thermosetting polyimide in the field of aerospace.