591results about How to "Good thermal stability" patented technology

A magnetoresistive element includes a multilayer film configuration including: a tunnel insulation layer; and a pair of magnetic layers that are laminated with the tunnel insulation layer interposed therebetween. A resistance value of the magnetoresistive element varies with a relative angle between magnetic orientations of both of the magnetic layers, and at least one of the magnetic layers includes a magnetic film having a thermal expansion coefficient not greater than a value obtained by adding 2×10⁻⁶/K to a thermal expansion coefficient of the tunnel insulation layer. The thus configured magnetoresistive element can exert excellent thermal stability. The use of such a magnetoresistive element can realize a magnetic head, a magnetic memory element and a magnetic recording apparatus with excellent thermal stability.

Spiro-fluorene-xanthene bipolar main materials have vertical spiral structures, so the main materials can effectively inhibit intermolecular actions, thereby the main materials can inhibit the intermolecular actions and dimer luminescence, and have good thermal stabilities and stable amorphous states. The invention relates to a spiro-fluorene-9,9-xanthene main material having a concrete designed structure shown in the specification, and concretely relates to a preparation method of the spiro-fluorene-9,9-xanthene main material, and an application of the spiro-fluorene-9,9-xanthene main material in organic light-emitting diode devices. The material has the following advantages: 1, the material has a high thermal stability and a stable amorphous state; 2, the material has a steric hindrance effect, so the material can effectively inhibit the dimer luminescence; and 3, the preparation method and the synthetic condition of the material are simple and are easy to implement, and the luminescent efficiency of the material is high. Preliminary research results of the structures of devices of the material and the properties of the material show that the material can be used in red and green light organic electroluminescent devices. Research results show that the material has a large application value and a wide application prospect in organic light-emitting diodes as the main material.

The invention discloses a halogen-free expansible flame-retardant thermoplastic resin composition, which is prepared by fusing and blending the following components in percentage by weight: 40 to 80 percent of thermoplastic resin, 18 to 25 percent of halogen-free expansible flame retardant, 0 to 5 percent of flame-retardant synergetic agent, 0 to 30 percent of glass fiber, 0 to 2 percent of coupling agent and 0.5 to 1 percent of antioxidant, wherein the thermoplastic resin is any one of polyamide 6, polyamide 66 and polylactic acid or glass fiber reinforced product thereof. The halogen-free expansible flame retardant in the flame-retardant thermoplastic resin composition has low additive amount and good flame retardancy, and the compound flame-retardant synergetic agent does not affect various inherent properties of the resin and can improve the flame retardancy of the material and reduce the cost of the material so as to fill the blank that the prior art has no thermoplastic resin compositions of halogen-free expansible flame-retardant polyamide, polylactic acid and the like.

Provided are a compound represented by Formula 1 below and an organic light-emitting device including the same:

wherein X is a C, Si, or Ge atom disubstituted with H or C_1-60 organic groups, R_a-R_j are C_1-60 organic groups, CY1 is a substituted or unsubstituted C₅-C₆₀ aromatic ring or a substituted or unsubstituted C₂-C₆₀ heteroaromatic ring, and n is 0 or 1. The use of the compound provides an organic light-emitting device having a low operating voltage and good efficiency and brightness.

The present invention relates to a high-temperature-resistant and high-salt-resistant gel water-plugging method for raising petroleum recovery efficiency. Said invention adopts three-slug injection water-plugging method, and provides the concrete steps of said three-slug injection water-plugging method. These steps are as follows: first slug, adding temporary blocking agent, its added quantity is 10-20% of total injection amount, after the temporary blocking agent is injection for 0.5-1.5 hr, closing well, the temporary blocking agent can be formed into gel, can be used for temporarily blocking the oil layer; then making second slug, injecting low-viscosity gel which is easily injected and can be formed into gel with high viscoelasticity under the condition of stratigraphic temperature, its injected quantity is 70-80% of total injection amount; and third slug, injecting cement as sealing agent, its injected quantity is 10-20% of total injection amount.

The invention relates to a conjugated polymer based on condensed ring thiophene and diazosulfide, a preparation method and an application of the conjugated polymer as an active layer material in organic optoelectronic devices, such as polymer solar energy cells, organic field effect transistors and organic light emitting diodes. The conjugated polymer based on condensed ring thiophene and diazosulfide has an excellent sunlight capture ability and a hole transmission ability, and the conjugated polymer solution has good processability, thermostability, charge transmission performance and lightadsorption and is an ideal organic semiconducting material in the organic electronic devices, such as solar energy cells, field effect transistors and light emitting diodes. A general formula of the conjugated polymer is shown as above.

A wrought age-hardenable nickel-chromium-cobalt based alloy suitable for use in high temperature gas turbine transition ducts possessing a combination of three specific key properties, namely resistance to strain age cracking, good thermal stability, and good creep-rupture strength contains in weight percent 17 to 22 chromium, 8 to 15 cobalt, 4.0 to 9.5 molybdenum, up to 7 tungsten, 1.28 to 1.65 aluminum, 1.50 to 2.30 titanium, up to 0.80 niobium, 0.01 to 0.2 carbon, up to 0.01 boron, and up to 3 iron, with a balance of nickel and impurities. Certain alloying elements must be present in amounts according to two equations here disclosed.

The present invention relates to nickel-cobalt-manganese-based compound particles which have a volume-based average secondary particle diameter (D50) of 3.0 to 25.0 μm, wherein the volume-based average secondary particle diameter (D50) and a half value width (W) of the peak in volume-based particle size distribution of secondary particles thereof satisfy the relational formula: W≦0.4×D50, and can be produced by dropping a metal salt-containing solution and an alkali solution to an alkali solution at the same time, followed by subjecting the obtained reaction solution to neutralization and precipitation reaction. The nickel-cobalt-manganese-based compound particles according to the present invention have a uniform particle size, a less content of very fine particles, a high crystallinity and a large primary particle diameter, and therefore are useful as a precursor of a positive electrode active substance used in a non-aqueous electrolyte secondary battery.

The invention discloses a lithium ion battery electrolyte solution which comprises a lithium salt and a non-aqueous organic solvent, wherein the lithium salt is a lithium salt A or a mixture of the lithium salt A and a lithium salt B; the lithium salt A contains oxalate groups, and the lithium salt B does not contain oxalate groups; the lithium salt A comprises one or mixture of several of lithium bis(oxalate)borate (LiBOB), lithium difluoroborate (LiDFOB), lithium difluorophosphate (LiDFOP) and lithium tetrafluorophosphate (LiTFOP); the non-aqueous organic solvent is one or mixture of several of common carbonate, carboxylate, ethers, sulfone compounds and the like. Due to the lithium ion battery electrolyte solution, the safety and the high-low-temperature performance of a lithium ion battery can be greatly improved, and the use temperature range of the lithium ion battery can be expanded.

the invention discloses a crosslinking polyphosphine-nitrile microball and preparing method, which is characterized by the following: the diameter is 0.4-5 um ; the chemical structural formula is displayed on the right; the microball surface is flat solid structure, which adopts hexachloride cycotrinitrilephosphine and 4, 4'-dihydroxy diphenyl sulfone to crosslink and condense under the action of trimethylamine.

The invention provides an anion-exchange film, a preparation method of the anion-exchange film and a fuel cell. The anion-exchange film comprises imidazole functionalized brominated polyphenylene oxide with the structure shown in the specification. The preparation technology of the film is simple, the obtained imidazole functionalized brominated polyphenylene oxide has excellent film properties, such as high anion-exchange film OH-conductivity, good heat stability and good alkaline resistance, and the performance of the film can be adjusted and controlled by simply changing the adding amount of N-substitution imidazole micromolecules.

The present invention provides one kind of heat resisting violet sand earthenware material and its product making process. The heat resisting violet sand earthenware material consists of Si2O 60-73 wt%, Al2O3 15-38 wt%, CaO 2-6 wt%, MgO 6-12 wt%, Fe2O3 0-5 wt%, K2O 0-2 wt%, and Li2O 0-5 wt%; and its raw materials include violet sand 40-60 wt%, black clay 20-30 wt%, white clay 10-25 wt%, talcum 10-18 wt%, and Chinese medicinal stone 5-10 wt%. The heat resisting violet sand earthenware material may be used in making different kinds of heating utensils with thermal expansion coefficient of (1-2)x10<-6>/deg.c, high heat stability and high heat shock resistance. In addition, the utensil made of the violet sand earthenware material may be used in cooking food with good look, good smell, good taste and excellent health function.

The invention discloses a Bacillus pumilus. The Bacillus pumilus was preserved in China General Microbiological Culture Collection Center on August 23, 2010, and its preservation number is CGMCC NO.4117. The Bacillus pumilus disclosed in the invention can be used for preparing bactericides for biological control of tobacco or vegetable fungus diseases, and can be used for preparing growth promoting agents of tobacco or vegetable for promoting the growth of plants, especially tabocco. The bacterial strain has good stability, strong stress resistance, and excellent effect of promoting growth, is an excellent microbial pesticide and an excellent microbial pesticide resource. The bacterial strain has a wide application prospect.

The invention discloses a high-strength corundum ceramics and a preparation method thereof. A ceramic blank comprises the following components: 18-22 parts of aluminum oxide, 12-15 parts of quartz, 0.5-1.0 part of talc, 27-30 parts of feldspar, 25-29 parts of kaolin, 10-14 parts of chinastone and 0.5-1.5 parts of blank body plasticizing agent. In sintered porcelain, the aluminum oxide content is higher than 30 percent. The method comprises the following steps: ball-milling and pulverizing a blank; adding water and mixing to obtain blank slurry; deironing and press-filtering the blank slurry into a mud cake and roughly smelting the mud cake; mildewing the roughly smelted mud cake and refining the mildewed mud cake; rolling and moulding the refined mud in a die to obtain a blank body; drying, washing and glazing the blank body and sintering at 1,280-1,320 DEG C for 15-18 hours to obtain a finished product. The product has favorable mechanical strength, and the impact resistant capability of the product is more than four times that of common ceramics; and the product has favorable thermostability, no crack after thermal shock at 200 DEG C/20 DEG C three times, the water absorption rate of lower than 0.1 percent, is more dense, firm and durable and is particularly suitable for an oven, a microwave oven and a dish-washing machine.

The invention discloses a ceramic membrane. The ceramic membrane is formed by the following steps: synthesizing dendriform grafted copolymers by acrylate monomers and enol monomers in the presence of an initiator, then adding inorganic ceramic particles, uniformly dispersing to form a mixture, and then coating a single surface or two surfaces of a membrane base material with the mixture. The inorganic ceramic particles are adsorbed onto the copolymers and mutually bonded, so as to form compact ceramic coatings with three-dimensional network structures between the inorganic ceramic particles and between the copolymers, and the ceramic coatings are adsorbed together with the membrane base material by virtue of the copolymers, so that the three-dimensional network structure is formed by the inorganic ceramic particles, the copolymers and the membrane base material. The invention further discloses a preparation method of a lithium ion secondary battery and the battery. The ceramic membrane has the advantages of good thermostability, simplicity in process control and easiness in industrial production, in the process of using the lithium ion battery, the stability of the assembly process is kept, the safety performance of the battery is guaranteed, and the effects of environmental friendliness and energy conservation are achieved.

The invention provides a porous-particle-doped polyimide hollow fibrous membrane, a preparation method thereof, and an application thereof. The hollow fibrous membrane provided by the invention comprises polyimide as a substrate and porous particles as adulterants. The preparation method provided by the invention comprises steps that: a hollow fibrous membrane green body is prepared through dry-wet spinning; and the porous-particle-doped polyimide hollow fibrous membrane is prepared through thermal imidization. The hollow fibrous membrane provided by the invention is applied in gas separation. Advantages of organic and inorganic membranes are combined in the hollow fibrous membrane provided by the invention. The hollow fibrous membrane has good thermal stability, good chemical stability, good mechanical strength, improved gas permeation selectivity, improved gas permeation speed, and improves gas separation effect.

The present invention relates to preparation process of precursor fiber of cellulose base carbon fiber in chemical fiber production. The preparation process includes mixing concentrated NMMO aqua and carbon black for carbon black water in the weight ratio of 20-10000, decomprssion distillation to obtain NMMO/carbon black solution with water content 24-28 wt%, adding the mixtue of sliced cellulose pulp and NMMO/carbon black solution in the weight ratio of 5-15 to 100 into dissolving reactor, swelling and stirring at 70-90 deg.c, raising the temperature to 90-120 deg.c, stirring and decomprssion distillation to eliminate water and form cellulose/NMMO/carbon black spinning liquid with water content of 12-14 wt%, and dry-wet spinning to obtain the precursor fiber. The present invention has high carbonizing yield, high mechanical performance of the carbon fiber, raised spinnability of the spinning liquid, non-toxic solvent, high solvent recovering rate and environment friendship.

The invention discloses a flame-retardant polyamide composite material and a method for preparing the flame-retardant polyamide composite material. The flame-retardant polyamide composite material is characterized by comprising 40-80wt% (weight percent) of polyamide resin, 0-30wt% of reinforcing material, 10-25wt% of flame retardant, 2-4wt% of synergistic flame retardant, 2-5wt% of compatibilizer, 0.5-1wt% of heat stabilizer and 0.5-1wt% of processing aid. The method for preparing the flame-retardant polyamide composite material comprises the following steps: adding the polyamide resin, the reinforcing material, the flame retardant, the synergistic flame retardant, the compatibilizer, the heat stabilizer and the processing aid into a twin-screw extruder, melting, mixing, extruding and granulating. The flame-retardant polyamide composite material disclosed by the invention has stable thermal stability and flame-retardant effect, good comprehensive mechanical performance and processing and forming performance and wider application range and field and can be applied to the fields of automotive industry, electronic industry and furniture industry.

The invention discloses a lithium ion battery positive active substance, an anode material, an anode material sizing agent, an anode piece, a preparation method thereof and a lithium ion battery, which relates to the technical field of lithium ion batteries. The lithium ion battery positive active substance is mainly prepared from the following components by weight percent: 10 to 50 percent of lithium manganese ferrous phosphate and 50 to 90 percent of nickel cobalt lithium manganate, wherein the lithium manganese ferrous phosphate is LiMn*Fe1-*PO4, x is greater than 0.5 and less than 1; and the nickel cobalt lithium manganate is Li(Ni*CoyMnz)O2, x is greater than 0 and less than 1, y is greater than 0 and less than 1, and z is greater than 0 and less than 1. The lithium ion battery positive active substance solves the problems of excessively high temperature and safety of the traditional lithium battery at multiplying power. By improving an anode material and an anode piece, not only can the heat stability of the anode material be improved, but also the internal resistance of the pole piece can be reduced, the application to the high power can be satisfied, and the safety is good.

The invention discloses a synthetic method of a mesoporous material Cu-Zn-Al2O3 with high stability and the application in making an alcohol dehydrogenation catalyst, and belongs to the technical field of organic synthesis; the mesoporous material Cu-Zn-Al2O3 taking salt of copper, zinc, aluminum as raw materials, surfactants as templates, is synthesized at one step under a neutral or alkaline condition. The mesoporous material Cu-Zn-Al2O3 is used as a carrier in the preparation of the alcohol dehydrogenation catalyst, other Cu and Zn are loaded in the holes of the mesoporous material through sedimentation; while the masterbatch is made into a novel alcohol dehydrogenation catalyst after washing, drying, granulating, roasting and molding. Compared with the traditional catalyst made by coprecipitation method, the catalyst has the advantages of high catalytic activity, good product selectivity, etc.

The invention relates to a preparation method of a Coca-Cola flavour for tobacco, including the following steps: baked Coca-Cola pulse flour, amino acid, reducing sugar, water and propanediol are subject to flash heat reflow by oil bath while stirring, and then recirculated water is used for cooling the mixture to room temperature, thus obtaining the Coca-Cola flavour for tobacco. The invention also relates to a product and an application thereof obtained by adopting the method The Coca-Cola flavour for tobacco prepared by the invention can be widely used in tobacco perfuming; and compared with commercially available Coca-Cola flavour, the Coca-Cola flavour for tobacco of the invention contains strong nut fragrant and burnt sweet and fragrant, is more close to natural Coca-Cola flavour, can increase fragrant, remove impurity and modify cigarette smoke, and also has favorable thermal stability.

The invention discloses a method for manufacturing a silicone micro-nano optical structure by using an imprinting technology. Firstly, a template serving as a seal during the imprinting is designed and processed according to the requirements of the structure of a device; secondly, an appropriate substrate material is selected and used according to the requirements of the micro-nano optical structure of the device, and then covered with imprinting glue; afterwards, structural patterns on the template are transferred to the imprinting glue by adopting an imprinting process, the imprinting glue is solidified and molded, the template is released after the template and the substrate are both cooled, and then a micro-nano optical structure with embossed figures is obtained; and finally, a polymeric optical bounding layer covers above imprinted lines according to the design of the device, and then the whole micro-nano optical structure is formed. By adopting the method, optical devices whichhave good weatherability and strong thermal stability and cause low loss can be prepared; and besides, the process is simple, so that the method has a cost advantage.

The invention discloses a lithium ion battery gel type ionic liquid/polymer electrolyte and a preparation method thereof, relating to a gel type ionic liquid/polymer electrolyte and a preparation method thereof. The invention solves the problem of poor compatibility of the prior imidazole ionic liquid and a lithium ion battery cathode material. The electrolyte is made of a macromoleclar polymer, imidazole ionic liquid and lithium salt. The method comprises the following steps: 1. dissolving the macromoleclar polymer into organic solvent; 2. adding the imidazole ionic liquid and stirring till the solution is uniform; 3. adding the lithium salt to obtain gel liquid; 4. pouring the gel liquid into a die, drying in vacuum and demolding. The electrolyte has favorable compatibility with a lithium titanate cathode; a lithium ion battery made of the electrolyte has high safety, and the lithium titanate cathode presents ultrahigh specific capacity (more than a double of the theoretical specific capacity) and two charging and discharging platforms in the electrolyte. The invention has simple method and technology, low cost and convenient operation.

The invention discloses high-elasticity polyurethane modified epoxy-silicone ablation resistance paint. According to the invention, an organic silicon intermediate prepared through alkoxy silane hydrolysis and epoxy resin are condensed into hydroxyl-terminated epoxy-silicone resin with high char yield and excellent ablation resistance; the elongation at break and the tensile strength of the resin system are improved through selecting high-elasticity polyurethane resin to toughen the epoxy-silicone resin; filler, a reinforcing agent, a thermal insulation material, an additive and a solvent are also added, so as to obtain the high-elasticity polyurethane modified epoxy-silicone ablation resistance paint. While the requirement that an outer shell coating is subjected to relatively large deformation due to internal pressure when grains are burnt is met, the coating has excellent ablativity, very low density and high thermal insulation performance.

The invention provides an antifreezing foaming drainage agent, and a preparation method and application thereof. The antifreezing foaming drainage agent is prepared from the following raw materials in percentage by weight: 20-35% of fatty alcohol polyethenoxy ether phosphate sodium salt, 10-20% of sodium alpha-olefin sulfonate, 2-3% of polyanionic cellulose, 1-2% of coco fatty acid diethanol amide, 2-4% of alcohol, 1-1.5% of potassium carbonate, 1-1.5% of sodium chloride, 0.5-1% of urea, 0.5-1% of sodium acetate and the balance of water. The preparation method comprises the following step: sequentially adding the raw materials into a reaction vessel while stirring. The antifreezing foaming drainage agent provided by the invention has the advantages of excellent oil resistance, excellent salt tolerance, excellent foaming capacity, excellent water carrying capacity and low solidifying point (-30 DEG C), and is suitable for drainage and gas recovery operation of natural gas wells under severe cold conditions.

The invention discloses a preparation method for a catalyst containing copper and zinc. The method comprises the following steps: respectively preparing a precipitate containing a zinc compound and a precipitate containing an aluminum compound through carbonization; then mixing and aging the two precipitates and adding basic copper carbonate at the same time; and carrying out washing, filtering, drying, baking and pressed forming so as to obtain the catalyst containing copper and zinc. The catalyst prepared by using the method has a high specific area and uniform active particles, improves synergism between the two active components--copper and the cocatalyst zinc, enhances activity and thermal stability of the catalyst containing copper and zinc and prolongs the service life of the catalyst. The catalyst is applicable as a catalyst for synthesis of methanol.

The invention relates to electrolyte of a medium-high voltage aluminum electrolytic capacitor and a preparation method of solute thereof. In order to solve the problems of low sparking voltage, poor thermal stability and bad solubility in the traditional electrolyte, the invention provides the electrolyte containing dicarboxylic acid having a branched chain or salt thereof as a solute and a single solvent or a mixed solvent containing more than one selected from alcohols, alcohols and ethers, amides, sulfones, sulfoxides and esters, wherein the mass percentage of the solute is 0.5-30 percent. The dicarboxylic acid having a branched chain is prepared by evenly mixing and reacting a reactant (formula is shown upper right) (A, B are electron withdrawing groups, and R1 is a branched chain) and acrylic acid derivative and catalyzer alkali, saponifying, acidizing by strong acid, decarboxylating and washing by purified water. Ammonium salt is produced if required by dicarboxylic acid containing ether group reacting with ammonia or amine. The electrolyte prepared with acid or salt thereof in the invention has better solubility and thermal stability.

A copper zinc alloy that is used as a material for a sliding bearing wherein the alloy comprises 59-73% copper, 2.7-8.5% manganese, 1.5-6.3% aluminum, 0.2-4% silicon, 0.2-3% iron, 0-2% lead, 0-2% nickel, 0-0.4% tin, residual zinc and unavoidable impurities.

The invention provides an efficiency anti-static PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) composite material and a preparation method thereof. The composite material is prepared from the following components in percentage by weight: 40-70 percent of polycarbonate, 5-40 percent of ABS, 0.5-10 percent of antistatic agent, 0.5-5 percent of compatilizer and 5-25 percent of dispersing agent. The preparation method comprises the following steps: firstly, mixing the antistatic agent, the compatilizer and the dispersing agent in the raw materials according to a certain proportion at the room temperature; performing melt extrusion through double screws to obtain antistatic master batch; extruding the composite material according to a certain proportion, extruding through the double screws, and granulating to obtain the efficient anti-static PC/ABS composite material. The composite material prepared by the method has superior antistatic performance, high chemical performance and attractive appearance.

The invention provides a halogen-free flame retardant PVC elastic material and a preparation method thereof, relating to a preparation method of a polymer composite material. The preparation method comprises the following steps of: mixing PVC resin in a kneader till the temperature is 70-80 DEG C; then adding a stabilizing agent, a plasticizer, a lubricant, pigments and a halogen-free flame retardant and continuing mixing till the temperature of the mixture is 85-95 DEG C and discharging the mixed material; cooling the mixed material in a cooling stirrer to 40-50 DEG C; and adding the cooled mixed material in a twin-screw extruder, and extruding strip-shaped halogen-free flame retardant PVC elastic material under the condition that the temperature of an extrusion die head is 130-150 DEG C. An elevator balance compensation chain sheath prepared from the special material provided by the invention has beautiful appearance, good toughness, good aging resistance, high thermal stability andgood fire retardant effect.