55results about How to "·Excellent thermal stability" patented technology

An electroluminescent (EL) is provided comprising an anode, an organic electroluminescent element, and a cathode wherein the electroluminescent element contains, for example, a fluorescent 1,1′-binaphthyl derivative component of Formula (I) wherein R1, R2, R3 and R4 are individual substituents or a group of substituents, each of which may be selected from the group consisting of hydrogen, or alkyl of from 1 to about 25 carbon atoms; an alicyclic alkyl of from 3 to 15 carbon atoms; an aryl or substituted aryl with about 6 to about 30 carbon atoms; carbon atoms from 4 to 24 necessary to complete a fused aromatic ring of naphthalene, anthracene, perylene and the like; an alicyclic alkyl group with from about 3 to about 15 carbon atoms; a silicon atom which can be substituted with a trimethyl, diphenylmethyl, triphenyl group and the like; heteroaryl or substituted heteroaryl of from 5 to 24 carbon atoms, carbon atoms necessary to complete a fused heteroaromatic ring of furyl, thienyl, pyridyl, quinolinyl and other heterocyclic systems; an alkoxy, amino, alkyl amino or aryl amino of from 1 to about 25 carbon atoms; a halogen, a cyano group, and the like.

The invention discloses a preparation method of solid polymer electrolyte with good toughness and good thermal stability and application thereof in lithium batteries. The preparation method of the solid polymer electrolyte at least comprises the following steps: uniformly distributing a polymer cross-linked network linked with nanoparticles, another polymer monomer, conductive salt and an initiator on the molecular level to obtain polymeric precursor solution; coating a base material or the surface of an electrode with the polymeric precursor solution; and preparing solid polymer electrolyte which comprises the nanoparticles by polymerization. The method is high in controllability and simple and convenient to operate, and has good application prospect. The nanoparticles are introduced, so that the obtained solid polymer electrolyte has good flexibility; and meanwhile, by synergetic enhancement of another polymer, the solid polymer electrolyte has good thermal stability and excellent ionic conductivity.

The present invention is a polycarbonate-polyorganosiloxane copolymer (A-1) comprising a polycarbonate block composed of a specific structural unit and a polyorganosiloxane block composed of a specific structural unit, wherein(1) the content of the polyorganosiloxane block portion is 1 to 30% by mass,(2) the average number of the repeating structural units represented by the general formula (II) is 70 to 1000,(3) the viscosity-average molecular weight of the copolymer is 13000 to 26000, and(4) the content of the phenol residue having an allyl group in the copolymer is 400 ppm by mass or less, the copolymer providing a molded article having excellent thermal stability and excellent color tone after even when the molding is carried out at high temperature; a process for production of the copolymer; and a polycarbonate resin using the polycarbonate-polyorganosiloxane copolymer.

A cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, color stability, and thermal stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, an emitting layer, in an organoelectroluminescent device, and as an organic dye or an electronic material such as a nonlinear optical material.

The invention discloses a 3D-printing thermoplastic polyurethane material and a preparation method of same. The 3D-printing thermoplastic polyurethane material includes, by weight, 35-75 parts of a macro-molecular polyol, 0-10 parts of a fluorine-containing polyol, 2-25 parts of a small-molecular chain extender, 0-7 parts of a fluorine-containing chain extender, 5-60 parts of isocyanate, 0-8 parts of a hydrolysis stabilizing agent, and 0-10 parts of other additives. Compared with a method in the prior art, an in-situ polymerization one-step method is employed in the preparation method. By means of one or more of the fluorine-containing polyol and the fluorine-containing chain extender, fluorine is introduced into the thermoplastic polyurethane material to prepare the 3D-printing thermoplastic polyurethane material which has the advantages of both the fluorine-containing compound and the TPU. The material is excellent in thermal-stability, is low in shrinking rate, is high in mechanical performance and is low in water absorption. A 3D-printing product prepared from the material is excellent in performance.

The invention relates to a preparation method of a cubic boron nitride and diamond polycrystal with a nanometer structure. The preparation method comprises the steps: with hexagonal boron nitride and diamond mixed powder or cubic boron nitride and diamond mixed powder as the raw material, purifying for removing impurities in the raw material, then, assembling a sintering unit without adding any binder, and directly sintering at high temperature and superhigh pressure to prepare the cubic boron nitride and diamond polycrystal with the nanometer structure, wherein diamond accounts for 10-90% of the mass percentage of the raw material. The cubic boron nitride and diamond polycrystal with the nanometer structure is uniform in phase distribution, cubic boron nitride crystal grains have nanometer sizes, and diamond crystal grains are uniformly distributed in the nano cubic boron nitride crystal grains, thus a nanometer cubic boron nitride and diamond interface which is compact in combination and high in strength is formed at a large area. Therefore, the hardness of the high-performance cubic boron nitride and diamond polycrystal with the nanometer structure is equal to that of a diamond monocrystal, and the thermal stability, hardness and wear resistance of the high-performance cubic boron nitride and diamond polycrystal with the nanometer structure are also remarkably higher than those of a diamond polycrystal containing a metal binder.

A propulsion energy storage system for a hybrid vehicle includes ultracapacitor based energy storage to provide rechargeable energy storage. The rechargeable energy storage used performs well over a wide thermal range and thus permits vehicle designers and manufacturers to forego incorporation of temperature management systems. Further, as the rechargeable energy storage exhibit excellent thermal stability, the form factor of the cells of the rechargeable energy storage (e.g., ultracapacitors) may be adjusted to meet the desires of designers, manufacturers and users.

The present invention relates to a method of preparing a cathode active material precursor for a lithium rechargeable battery, the cathode active material precursor for the lithium rechargeable battery prepared thereby, and a cathode active material formed using the cathode active material precursor.According to the present invention, the method of preparing a cathode active material precursor for a lithium secondary battery controls the concentration of a concentration gradient part and a shell part in a precursor to obtain a desired concentration of a transition metal in the shell part. As a result, a metal composition is distributed in a continuous concentration gradient from the interface between the core part and the shell part to the surface of the cathode active material, thereby a cathode active material with excellent thermal stability.

The invention discloses a copolymer resin of chloroethylene-isobutyl vinyl ether-glycidyl acrylate and a preparation method thereof. The copolymer resin is obtained by copolymerization of 65-85 mass parts of chloroethylene, 15-30 mass parts of isobutyl vinyl ether and 0.5-5.0% (corresponding to the total mass of chloroethylene and isobutyl vinyl ether) of glycidyl acrylate. The preparation method comprises the following steps: adding the chloroethylene, isobutyl vinyl ether and glycidyl acrylate into aqueous phase containing emulsifier, a water-soluble redox initiation system and pH regulator, and carrying out emulsion polymerization for 3-10 hours at the temperature of 35-60 DEG C. The invention adds glycidyl acrylate into chloric ether resin to improve the heat stability of chloric ether resin and adhesion with metal; and meanwhile, copolymer has uniform composition and has high dissolving speed in solvent, such as sundex and the like.

The invention provides a bacterial cellulose pervaporation membrane, which is characterized in that the preparation method is as follows: Acetobacter xylinum DT4.2 strain of the active wood fermentation is put into the seed culture fluid and shaking cultured at constant temperature of 25 to 32 DEG C for 8 to 24 hours; the seed solution is put into the fermentation culture solution to be evenly shaken; and then the fermentation culture solution is moved to the container for culturing for 7 to 15 days at the constant temperature of 25 to 32 DEG C; pellicle membrane formed on the surface of the fermentation solution is taken out and then is processed by the alkali liquor with the quality concentration of 1 to 20 percent; the residual alkali liquor in the membrane is washed to neutrality by the deionized water to prepare into the membrane after drying. The invention also discloses the application of the membrane. The preparation method of the membrane has the advantages of simple preparation, good mechanical and chemical property, excellent heat stability, strong hydrophilicity, high separation choice to the water in the organic water solution at lower temperature, long service life; moreover, the membrane material itself can be biodegradation which is a environmental friendly material.

The invention provides a flame-retarding toughening polystyrene master batch and a preparation method thereof, which can achieve the purposes of being high in flame resistance rate and free of dust in production environments. The technical scheme is that the master batch comprises the following components, by mass: 25-35 parts of polystyrene, 10-20 parts of styrene-butadiene- styrol copolymers, 15-25 parts of decahromopdipenyl ethane, 15-25 parts of brominated epoxy resin, 8-14 parts of antimonous oxide, 0.2-0.6 parts of lubricant zinc stearate, 0.3-0.8 parts of lubricant ethylene bis stearamide, 0.3-0.6 parts of calcium oxide, 0.1-0.3 parts of polytetrafluoroethylene and 0.2-0.4 parts of antioxygen. The flame-retarding toughening polystyrene master batch can be directly mixed with high impact polystyrene (HIPS) resin to produce plastic injection parts. The flame-retarding toughening polystyrene master batch with different contents can produce products with various flame-retarding grades, and is wide in application, convenient and fast.

The invention discloses a low cost environmental protection ultra-tough rigid polyvinyl chloride nano compound capable of injection molding and a preparation method. The raw material of the compound comprises the components by weight parts: 100 parts of polyvinyl chloride, 10 to 100 parts of nano calcium carbonate, 4 to 100 parts of acrylonitrile-butadiene-styrene terpolymer, 1 to 3 parts of lanthanum tin compound stabilizer, 1 to 3 parts of acrylate processing aid, 1 to 3 parts of inner lubricant and 0.3 to 1 part of outer lubricant. The low cost environmental protection ultra-tough rigid polyvinyl chloride nano compound capable of injection molding is obtained after mixing and cooling the raw materials in a high-speed mixer and granulating in a conical twin-screw extruder. In the invention, the advantages of good flame retardance, strong rigidity and low price of polyvinyl chloride resin, strong rigidity, toughening property for polyvinyl chloride and low price of the nano calcium carbonate, impact resistance, low temperature resistance, easy molding and processing and the like of ABS (Acrylonitrile Butadiene Styrene) are integrated; the product has low price, environmental protection performance, ultra-high toughness, good comprehensive mechanical property and good processing fluidity, and has wide application prospect and obvious social benefit in the fields of household appliance elements, automobile instruments and the like.

The invention relates to a star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and a preparation method thereof. The star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer is a star hybrid macromolecule which adopts the silsesquioxane as a core and grafted acrylic ester segmented styrene as an arm. The synthesis method of the star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer comprises the following steps of: synthesizing star silsesquioxane-grafted acrylic ester-styrene segmented copolymer by adopting silsesquioxane containing active chlorine as an initiator, selecting several types of acrylic ester, styrene and the like as comonomer and adopting cuprous chloride / pentamethyl divinyl triamine as a catalytic system through a two-step atom transfer free radical polymerization method; obtaining star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer through vitriolization; and obtaining star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer macromolecules of different structures by controlling the length of each POSS (Polyhedral Oligomeric Silsesquioxane) star arm, i.e., the constitution and the length of each block, so that the performances of the star silsesquioxane-grafted acrylic ester-sulfonated styrene segmented copolymer and the proton exchange membrane thereof are adjusted.

The invention belongs to the technical fields of functional polymer materials and electrochemistry and in particular relates to a preparation method of a pore-filing type proton exchange membrane taking double ether crosslinked porous polybenzimidazole imide as a base. The preparation method of the pore-filing type proton exchange membrane taking the double ether crosslinked porous polybenzimidazole imide as the base comprises the following steps: firstly synthesizing polybenzimidazole imide provided with a cross-linkable imidazole group on a main chain, preparing the synthesized polybenzimidazole imide into a membrane solution, adding a double ether crosslinking agent, reacting with the imidazole group, a crosslinking sulfonated polyimide polymer in a membrane forming process, adding a pore-forming agent at the same time to form a crosslinked porous polybenzimidazole imide membrane, and finally compounding the crosslinked porous polybenzimidazole imide membrane with perfluorosulfonate resin, so that the pore-filling type proton exchange membrane is obtained. A basement membrane gives good mechanical properties to the pore-filling type membrane, and the pore-filling type membrane has high dimensional stability; meanwhile, the proton conductivity of a perfluorosulfonate membrane is not greatly reduced. The preparation method of the pore-filing type proton exchange membrane taking the double ether crosslinked porous polybenzimidazole imide as the base has the advantages that the preparation technology controllability is good; and compared with the traditional perfluorosulfonate membrane, the obtained pore-filling type proton exchange membrane has high mechanical strength and good dimensional stability and has broad application prospect in a polymer electrolyte membrane fuel cell.

The invention discloses high-strength carbon fiber shielding paper and a preparation method thereof. The shielding paper comprises carbon fibers, plant fibers and conductive particles, wherein the carbon fibers and the plant fibers are randomly and uniformly distributed in a plane, micron-sized holes are formed among the plurality of fibers to form a three-dimensional reticulated structure, and the conductive particles are existent between the surfaces and the holes of the fibers; the carbon fibers are 1 mm to 20 mm in length; the plant fibers comprise wood fibers, grass plant fibers, bast fibers, seed hair fibers or combination of the wood fibers, the grass plant fibers, the bast fibers and the seed hair fibers; the conductive particles comprise carbon black with the particle size of 1 nm to 100 nm, silver coated copper powder, conductive rubber or combination of the carbon black, the silver coated copper powder and the conductive rubber. The shielding paper has the advantages of uniform porous structure and excellent ventilation property, shielding performance and mechanical strength; in addition, air filter paper can be used to the fields of energy resources, electromagnetic wave shielding, antistatic packaging, adsorption separation, aerospace and the like.

The invention relates to a transparent cubic boron nitride-diamond polycrystal preparation method. Hexagonal boron nitride-diamond mixed powder or cubic boron nitride-diamond mixed powder is used as a raw material and has a diamond mass fraction of 30-90%. After purification and removal of impurities, a binder is not used, a sintering unit is assembled and the transparent cubic boron nitride-diamond polycrystal is prepared directly through high temperature superhigh pressure sintering. The transparent cubic boron nitride-diamond polycrystal has uniform phase distribution. Cubic boron nitride grains have submicron-level sizes and diamond crystal grains are uniformly distributed in the cubic boron nitride grains. A large-area compact high-strength transparent cubic boron nitride-diamond interface is formed. The transparent cubic boron nitride-diamond polycrystal with high performances has hardness the same to that of diamond monocrystalline and has heat stability, hardness and wear resistance obviously better than those of a metal binder-containing diamond polycrystal.

The invention relates to a tadpole-shaped sulfonated POSS-containing hybrid polymer synthesized proton exchange membrane and a preparation method therefor. By taking mono-functional group-containing <gamma>-chloropropyl polyhedron silsesquioxane (single chloropropyl silsesquioxane) as an initiator, a catalyst, a ligand and an active monomer at a specific proportion are added to a reactor to be synthesized by adopting a two-step atom transfer free group polymerization method; and next, the tadpole-shaped sulfonated POSS-containing hybrid polymer is obtained by adopting a sulfonating mode. According to the designed membrane-forming method, the tadpole-shaped sulfonated POSS-containing hybrid polymer is taken as the raw material, and N, N-dimethylformamide is taken as a solvent to obtain themembrane in a pouring manner. The single-arm-structured and tadpole-shaped organic and inorganic hybrid polymer has high hydrophilia while excellent thermal stability is also ensured by virtue of existence of the POSS core, thereby improving the proton electric conductivity of the proton exchange membrane at a high temperature.

The invention discloses an organic silicon flame-retardant pressure-sensitive adhesive tape. The organic silicon flame-retardant pressure-sensitive adhesive tape comprises a substrate layer, an adhesive agent layer and a release layer, wherein the substrate is a flame-retardant cotton paper layer; flame-retardant filler is filled with the inner part of the flame-retardant cotton paper layer; the flame-retardant filler is prepared from the following components in parts by weight: 30 parts to 50 parts of modified plant fibers, 8 parts to 10 parts of asbestos powder, 6 parts to 8 parts of flame-retardant fibers, 3 parts to 5 parts of nano-aluminum hydroxide, and 10 parts to 20 parts of vegetable glue. The invention also provides a preparation method of the organic silicon flame-retardant pressure-sensitive adhesive tape. The adhesive tape disclosed by the invention has high tensile strength, high softness performance, high viscosity and high stability while the adhesive tape has high flame retardance property; and compared with conventional halogen, the organic silicon flame-retardant pressure-sensitive adhesive tape is relatively high in flame retardance and is more environmentally friendly.

The present invention relates to a cobalt (Co) and platinum (Pt)-based multilayer thin film having a novel structure and perpendicular magnetic anisotropy, and to a fabrication method thereof. More specifically, the invention relates to a cobalt and platinum-based multilayer thin film having perpendicular magnetic anisotropy (PMA), which includes thin cobalt layers and thin platinum layers alternately deposited over a substrate, and has an inverted structure in which a thickness of the thin cobalt layers is greater than that of the thin platinum layers, and to a fabrication method thereof. The cobalt and platinum-based multilayer thin film has a new structure in which the thickness of a magnetic thin layer is greater than that of a non-magnetic thin layer. The multilayer thin film may be easily applied as a free layer and a pinned layer in a magnetic tunnel junction by controlling the perpendicular magnetic anisotropy energy depending on the thickness ratio of the layers. Also, the multilayer thin film has excellent thermal stability, and thus maintains its PMA energy density even after being subjected to a heat treatment process. In addition, it enables a fine amount of in-plane magnetic anisotropy to be formed by heat treatment so as to reduce the critical current density required for magnetization switching. Therefore, it may be advantageously used for high-performance and high-density MRAM.

The invention discloses a thermophilic esterase and an application thereof in degradation of PAEs (Phthalic Acid Esters). The amino acid sequence of the thermophilic esterase is shown in SEQ ID NO.1. A hydrolysis reaction of PAEs is carried out in a water-containing medium under the catalysis of the thermophilic esterase and the fusion protein of the thermophilic esterase so as to generate a phthalic monomer acid and an alcohol are generated, and a phthalic acid and the alcohol are further formed. The thermophilic esterase can be used for preliminarily degrading a plasticizer, has a certain resistance to a denaturant and an organic solvent with moderate and low concentrations, has excellent heat stability and has the function of degrading various PAEs. The thermophilic esterase is the only one esterase cloned from thermophilic microorganisms according to literature reports. The thermophilic esterase has a good application prospect in the purely enzymatic degradation of the PAEs on the basis of the excellent performance. The thermophilic esterase realizes harmless degradation of the PAEs, and is good in degradation reaction stability, extensive in reaction condition and high in reaction speed.

The invention relates to a hybridoma cell strain and a monoclonal antibody secreted by the same. The antibody can be specifically bound with human IgG. The invention further relates to a kit comprising the hybridoma cell strain or the monoclonal antibody. The monoclonal antibody disclosed by the invention shows good performances in the aspects of antibody purity, repeatability, antibody valence and stability.

The invention relates to a hybridoma cell strain and a monoclonal antibody secreted by the same. The antibody can specifically bind with human IgG. The invention further relates a kit comprising the hybridoma cell strain or the monoclonal antibody. The monoclonal antibody is good in antibody purity, repeatability, antibody valence and stability.

The invention relates to a nitrogen oxide fluorescent powder for near ultraviolet excitation. The nitrogen oxide fluorescent powder has a chemical structural formula of A10-xD2Si3O18N4: Hx(1), wherein x is greater than 0 and smaller than or equal to 0.50, A is any combination of one or more than two selected from Y, La, Gd and Lu, D is any combination of one or more than two selected from B, Al, Ga and In, and H is Ce, or codoping of Ce and Tb, Eu, Pr and Dy. The invention further relates to a preparation method of the nitrogen oxide fluorescent powder. The nitrogen oxide fluorescent powder relates to a nitrogen oxide system, and the physical, chemical and thermally stable performances of the nitrogen oxide fluorescent powder are prior to those of the traditional oxide system; with wider range of excitation spectrum, the excitation spectrum has strong absorption at 380-410 nm and has higher matching degree with the emission spectrum of a commercial near ultraviolet chip; the emission spectrum can cover the whole visible region. A manufacturing method of the nitrogen oxide fluorescent powder disclosed by the invention is simple and effective, and is easy to operate, free of pollution and low in cost.

The object of the present invention is to provide an organic-inorganic hybrid material having heat resistance, and said object of the present invention can be attained by providing an organic-inorganic hybrid prepolymer containing a phenyl group which is prepared by the polycondensation reaction accompanying dehydration between a polydimethylsiloxane and a metal and / or semimetal alkoxide, wherein (a) phenyl group(s) is (are) partially or wholly introduced into said polydimethylsiloxane and / or said metal and / or semimetal alkoxide.

Provided are a Light Emitting Diode (LED) red fluorescent material and a lighting device having the same. The florescent material consists of elements M, A, D, X, L and Z, wherein element M at least contains one or more than one element of Be, Mg, Ca, Sr, Ba and Zn; element A at least contains one or more than one element of B, Al, Ga, In, La, Gd, Lu, Sc and Y; element D at least contains one or more than one element of Si, Ge, C, Sn, Ti, Zr and Hf; element X at least contains one or more than one element of N, O and F; element L at least contains one or more than one element of S, Se and Te; and element Z at least contains one or more than one element of a rare earth element or a transition-metal element.

The invention discloses a method for preparing lignin sulfonate by utilizing papermaking black liquid. The method comprises the following steps: S1, preparing raw materials: preparing the raw materials such as the papermaking black liquid, anhydrous sodium sulfite and formaldehyde, wherein the use amount of the sodium sulfite is 2.9 to 3.2 mmol per gram of lignin, the use amount of the formaldehyde is 0.8 to 1.2 mmol per gram of lignin, and the formaldehyde is prepared into a formaldehyde solution; S2, performing reaction: adding the papermaking black liquid into a reaction kettle, adding thesodium sulfite and the formaldehyde solution, stirring and heating, gradually heating to 158 to 165 DEG C, and continuously stirring to perform reaction for 2.5 to 3.5 hours, wherein the consumed timein the heating process is 80 to 100 minutes and the temperature is increased by 1 to 5 DEG C per minute; and S3, discharging: cooling after the reaction, and discharging when the temperature is reduced to 60 to 70 DEG C. The lignin sulfonate prepared by the method has high sulfonation degree and excellent tainting property, dispersibility and heat-resistant stability, has low water content and low content of sulfate, calcium, magnesium, iron, water insoluble matters and total reducing matters, has excellent comprehensive quality and can be widely applied in various fields.

The invention relates to a hybridoma cell strain and a monoclonal antibody secreted by the hybridoma cell strain. The antibody can achieve specific binding to human IgM and is applicable to in vitro detection of human IgM; and the antibody is especially suitable for early diagnosis of hepatitis a virus infection. The invention also relates to a kit comprising the hybridoma cell strain or the monoclonal antibody.

The invention relates to a hybridoma cell strain and a monoclonal antibody secreted by the hybridoma cell strain. The antibody can be specifically bound with human IgM, and can be used for in-vitro detection of the human IgM, and especially suitable for the early diagnosis of cytomegalovirus infection. The invention further relates to a kit containing the hybridoma cell strains or the monoclonal antibodies.

The present invention provides a resin composition for molding that allows production of a molded body having excellent thermal stability as well as high flexibility and strength, without using heavy metals such as lead and tin, and also provides a molded body obtained using the resin composition for molding. The present invention provides a resin composition for molding, including a chlorinated polyvinyl chloride and a thermal stabilizer, the chlorinated polyvinyl chloride having structural units (a) to (c) represented by formulae (a) to (c) shown below:—CCl2—  (a),—CHCl—  (b),—CH2—  (c),the proportion of the structural unit (a) being 17.5 mol % or less, the proportion of the structural unit (b) being 46.0 mol % or more, and the proportion of the structural unit (c) being 37.0 mol % or less, relative to the total number of moles of the structural units (a), (b), and (c), the chlorinated polyvinyl chloride having a chlorine content of 63 mass % or more and less than 72 mass %, the thermal stabilizer containing a calcium alkyl carboxylate and a zinc compound, and the resin composition for molding having a loss in quantity on heating at 230° C. of less than 2 mass %.