93results about How to "Microstructural stability" patented technology

A PCT thermistor comprises a substrate and two tinsel-shaped electrodes which are combined with two surfaces of the substrate. The substrate is made of the following components in weight percentage: 28-55% of high-polymer material; 22-32% of conductive filling material; 13-46% of auxiliary filling material; and 1-5% of auxiliary agent in processing. The high-polymer material is obtained through mixing one or multiple materials selected from: polyethylene, polypropylene, maleic anhydride grafted polyethylene, ethane-vinyl acetate copolymer, ethane-acrylic acid copolymer, polyvinylidene fluoride, polycaprolactam, polyhexamethylene adipamide, polydecamethylene sebacamide and polyundecylamide. The auxiliary agent in processing is one component or a mixture of multiple components selected from: an anti-oxidant, a coupling agent, a cross-linking agent and a sensitized cross-linking agent. The sensitized cross-linking agent is one component or multiple components selected from the unsaturated compounds of multiple functional groups with higher decomposition temperature. The PTC thermistor of the invention has the following advantages: high strength, and high resistance for multiple times of large current impact.

The invention discloses lithium secondary battery overcharge protection electrolyte and a lithium secondary battery. The electrolyte contains electrolyte lithium salts, non-water organic solvents, film forming additives and overcharge protection additives, wherein the film forming additives are at least one kind of materials from TMSP (tris(trimethylsilyl) phosphate) and DTD (dioxathiolane 2,2-dioxide); the overcharge protection additives comprise oxidation and reduction shuttle type overcharge protection additives. The overcharge protection additives used in the electrolyte do not take part in any reaction process at the normal work voltage of 2.75 to 4.35V; when the battery charging voltage exceeds 4.4V, the oxidation and reduction shuttle type overcharge protection additives generate oxidation and reduction shuttle current distribution and voltage limitation on the surface of an electrode; the voltage is controlled to be within a range; the intense decomposition of the electrolyte inside the battery due to too high voltage can be avoided; further, the occurrence of safety problems of combustion, explosion and the like of the battery can be prevented.

The invention belongs to the field of chemical industry, and relates to a high-dispersion, high-load, high-activity low-temperature methane reforming nickel-based catalyst and its application. The invention provides a high-dispersion, high-load, high-activity low-temperature methane reforming nickel-based catalyst, which comprises the following components in terms of mass percentage: active component 20-25%; synergistic component 1-30%; carrier 45-79% . The present invention further provides a preparation method of a high-dispersion, high-load and high-activity low-temperature methane reforming nickel-based catalyst and its use in low-temperature methane reforming reactions. The invention provides a high-dispersion, high-load, high-activity low-temperature methane reforming nickel-based catalyst and its application, which is suitable for high-pressure and low-temperature methane-carbon dioxide reforming reaction at a reaction temperature of 400-800°C, high-pressure and low-temperature methane-steam reforming, high-pressure and low-temperature reforming Methane reforming processes such as methane-carbon dioxide-steam mixed reforming have high catalytic activity and stability.

The invention discloses a conductive PC / ABS composite material and its preparation method. The composite material provided by the invention comprises the following components of: by weight, 50-70% of polycarbonate resin; 10-30% of ABS resin; 8-20% of conductive carbon black; 2-5% of a compatilizer; and 3-6% of a flexibilizer. According to the prepared conductive PC / ABS composite material, the ABSresin and the flexibilizer react with the polycarbonate resin, thus raising the toughness of the conductive PC / ABS composite material and enhancing the shock resistance of the resin added with a conductive filling material; in addition, the compatilizer is used to raise the blending effect of the polycarbonate resin and the ABS resin during processing, stabilize the microstructure of the conductive PC / ABS composite material and improve the comprehensive performance of the material.

The invention provides a Martensite stainless-steel composite steel plate and a production method thereof, belonging to the technical field of production of stainless steel composite plates. The method is realized through the following process routes: steel billet combination, heating, rolling control and heat treatment, wherein pack rolling of double billets is adopted, i.e., the upper and lower layers adopt A516Gr70 carbon steel, and two middle layers adopt 410S Martensite stainless steel; an isolation agent is added between two layers of the Martensite stainless steel; four edges of the combined billet is welded and sealed; and a vacuum pump is utilized for vacuum pumping. The invention has the following advantages: the Martensite stainless-steel composite steel plate has excellent strength-toughness and mechanical property, improves comprehensive utilization rate of materials, and further reduces cost at the same time.

The invention discloses a wollastonite enhanced polycarbonate material and a preparation method thereof. The wollastonite enhanced polycarbonate material comprises the following formula components in percentage by weight: 70-90% of polycarbonate resin, 5-20% of wollastonite, 3-6% of flexibilizer and 1-3% of wollastonite surface activator. The wollastonite enhanced polycarbonate material has good notch resistance performance and wear-resisting property, stable size, smooth and flat surface and comprehensive physical properties because all components within a proper range mutually act in the extrusion process. The preparation method of the wollastonite enhanced polycarbonate material is characterized in that extrusion and granulation are finished in one step by mixing reaction. The preparation method has the advantages of simple technology, high benefit and low cost, is convenient to operate and is suitable for industrial production.

The invention relates to the technical field of nano-materials, in particular to a preparation method of a full water electrolysis catalyst with a heterojunction structure. The preparation method includes: 1) preparing a precursor solution, and putting a pretreated conductive substrate into the precursor solution for hydrothermal reaction to obtain a trimetal precursor; and 2) placing the trimetalprecursor in a reducing atmosphere, carrying out first-step heating to a first-stage temperature and then carrying out heat preservation for a period of time, then carrying out second-step heating toa second-stage temperature, and then conducting heat preservation for a period of time, thus obtaining the full water electrolysis catalyst with a heterojunction structure. The preparation method isconcise and efficient, low in equipment requirement, and convenient to popularize and realize industrial production; meanwhile, the catalyst has the double functions of hydrogen evolution and oxygen evolution, can be directly used as a self-supporting electrode, and has wide universality; and the prepared full water electrolysis catalyst with a heterojunction structure has stable microstructure, homogeneous nano-structure size and uniform component distribution, and has good electro-catalytic performance and mechanical performance.

The invention discloses a tungsten oxide and zirconium oxide high-temperature solar selective absorption coating and a production method thereof. The tungsten oxide and zirconium oxide high-temperature solar selective absorption coating comprises three layers of films; a first layer of infrared reflective layer is a cuprum or argentum film which is located on the surface of a substrate, wherein the thickness of the cuprum or argentum film is 100 to 300 nm; a second layer of absorption layer comprises two sub-layers which are tungsten oxide and zirconium oxide films; the thickness of the first sub-layer and the thickness of the second sub-layer are both 150 to 300 nm; the volume percent of zirconium oxide in the first sub-layer is 50 to 75% and the rest is tungsten oxide; the volume percent of zirconium oxide in the second sub-layer is 30 to 50% and the rest is tungsten oxide; the first sub-layer is adjacent to the first layer of infrared reflective layer; the second sub-layer is adjacent to a third layer of antireflection layer; the third layer of antireflection layer is a zirconium oxide film, wherein the thickness of the zirconium oxide film is 120 to 200 nm. According to the tungsten oxide and zirconium oxide high-temperature solar selective absorption coating and the production method thereof, the high-temperature stability is excellent and the good thermal stability can be maintained under the 500 to 600 DEG C high-temperature vacuum conditions or under the 400 DEG C atmospheric conditions.

The invention relates to a processing method for improving anti-radiation performance of quartz optical fibers. Quartz optical fiber materials are high-pure quartz materials. The processing method adopts methods of a preheating treatment, rapid quenching, and pre-radiation and a re-preheating treatment. The preheating treatment is that the temperature is maintained in a certain range to make the structure of quartz optical fiber materials more stable. Rapid cooling makes sure that the structure of the quartz optical fiber materials remains in stable at the room temperature. Pre-radiation is that pure quartz optical fiber materials are subjected to a certain amount radiation to break the fatigue bonds of the pure quartz fiber optical material to give off redundant power. The re-preheating treatment makes the broken bonds pre-radiated recover so as to form stable structures. The anti-radiation quartz optical fiber materials, which are produced according to the processing method for improving anti-radiation performance of quartz optical fibers, have a very good anti-radiation performance and a very good anti-radiation effect under a very high radiation dose. The anti-radiation quartz optical fiber materials not only can be used for the production of optical fibers, but also can be used for the production of related devices made of anti-radiation quartz materials.

The invention relates to a method for encapsulating CaO-Y2O3-Al2O3-SiO2 glass at a port of a SiCf / SiC core cladding tube. Part of raw materials which are low in reaction activity and low in nuclear irradiation decay rate and have no side effects on the nuclear reaction process are selected, and a glass brazing filler metal is prepared through a melting-water cooling method; by means of the SiCf / SiC matched thermal expansion coefficient, good wettability and low high-temperature viscosity, packaging / connection of the SiCf / SiC composite core cladding tube is achieved under the conditions that the temperature is lower than the applicable temperature (<=1450 DEG C) of domestic third-generation SiC fibers and no pressure exists. The SiCf / SiC core cladding tube is promoted to be applied to a nuclear reactor, nuclear radiation leakage accidents are prevented in advance, and the operation safety of the nuclear reactor is improved. The method has the beneficial effects that the raw materials selected by an encapsulating agent are low-activity elements, the nuclear radiation decay of the encapsulating agent is small, the encapsulating agent has no side effect on a nuclear reaction process, and the mechanical and airtight requirements of port encapsulation of the core cladding tube are met, so that nuclear radiation leakage in the cladding tube can be effectively prevented in a harsh service environment, and nuclear radiation leakage accidents are prevented in advance.

The invention discloses orange full-fruit juice and a processing method thereof. The processing method mainly comprises the following steps: carrying out ozone composite high-pressure pulse electric field treatment on pre-treated oranges to remove pesticide residues of orange peel; carrying out coarse pulverizing, wet-process superfine pulverizing and colloid mill treatment on the oranges after the pesticide residues are removed to obtain full-fruit juice; carrying out compound enzyme moderate enzymatic hydrolysis treatment on the full-fruit juice; and carrying out homogenization, degassing and sterilizing on the juice after enzymolysis. The entire oranges can be totally utilized, and the nutrient substances of the oranges are retained to a great extent; stability of a juice system is realized by pectin of materials, and chemical additives are reduced; and by functional ingredients such as essential oil and flavone and ultra-high-pressure synergistic interaction, effective bacteria inhibition of the juice is realized, the qualities such as the original nutrient ingredients, color and taste in the materials are retained well, and the obtained orange full-fruit juice is rich in fragrance, bright in color, rich in functional ingredients and good in stability.

The present technology relates to a Ni—Mn—Ga magnetic shape memory (MSM) alloy including twin boundaries type 2, which are deviated approximately + / −2-4 degrees from (101) or equivalent crystallographic plane by rotation about [−101] or equivalent crystallographic direction. This technology relates also to an actuator, sensor and harvester including MSM element of this technology.

The invention provides a porous polyimide oil storage and retention structure and a preparation method and application thereof, and relates to the technical field of polyimide materials. The porous polyimide oil storage and retention structure comprises an oil storage layer and an oil control layer; the oil storage layer is made of monoether type polyimide, the porosity of the monoether type polyimide is 18-26%, and the aperture of the monoether type polyimide is 1.0-3.0 [mu] m; the oil control layer is made of pyromellitic polyimide, the porosity of the pyromellitic polyimide is 12-18%, and the pore diameter of the pyromellitic polyimide is 0.6-1.0 [mu] m. The pyromellitic polyimide is low in porosity and small in aperture so that the oil release rate of the composite material can be slowed down, and the oil retention rate can be increased; the monoether polyimide is high in porosity and large in aperture, so that the porosity and the oil storage rate of the composite material can be improved; the composite material provided by the invention has high oil storage rate and oil retention rate and good strength and wear resistance, and can meet the requirement of a high-speed and high-precision bearing on the service life.

The present invention uses a post-sinter-HIP anneal to increase the total transmittance of ceramic discharge vessels comprised of a submicron-grained alumina doped with MgO. After the anneal, the submicron-grained alumina discharge vessels have high values of both total and in-line transmittance, and are thus suitable for use in focused-beam, short-arc lamps. In particular, the total transmittance of the discharge vessel is increased to greater than 92% in the wavelength range from about 400 nm to about 700 nm.

The invention provides a supported noble metal catalyst with the performance of resisting high-temperature sintering and a preparing method thereof, and belongs to the technical field of catalysis. The supported noble metal catalyst comprises a second carrier, first carriers dispersed on the surface of the second carrier, a spinel stabilizer Mal2O4 located between the first carrier layer and the second carrier layer, active components dispersed on the surfaces of the first carriers and a silicon dioxide coating layer coating the surface of the second carrier; the second carrier is Al2O3, doping vario-property Al2O3 or hexaaluminate; the first carriers are nano particles of TiO2, CeO2, ZrO2, CexZr(1-x)O2 or modified CexZr(1-x)O2; the active components are noble metal Au, Pt, Pd, Rh, Ir or Ru. The invention further provides a preparing method of the supported noble metal catalyst with the performance of resisting high-temperature sintering. The supported noble metal catalyst can still maintain a high catalytic activity after being subjected to heat treatment under the condition of 800 DEG C to 1,100 DEG C.

The invention belongs to the technical field of lithium ion batteries, and discloses a high-voltage-resistant lithium ion battery non-aqueous electrolyte and a ternary high-voltage lithium ion battery. The high-voltage-resistant non-aqueous electrolyte of the lithium ion battery comprises a non-aqueous organic solvent, an electrolyte lithium salt and an additive, wherein the additive comprises a conventional additive and an additive as shown in a compound (1). Compared with the prior art, through the combined action of the combined conventional additive and the additive with the structure shown in the formula (I), a film can be formed on the surface of the positive electrode material, generation of cracks in particles of the positive electrode material in the circulation process is inhibited, dissolution of transition metal elements at high temperature is reduced, and an SEI film can be formed on the surface of the negative electrode material; and meanwhile, the interface impedance canbe reduced, so that the cycle performance, the rate capability and the low-temperature performance of the ternary high-voltage lithium ion battery are effectively improved.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a ternary lithium ion battery non-aqueous electrolyte and a lithium ion battery. The ternary lithiumion battery electrolyte comprises a non-aqueous organic solvent, an electrolyte lithium salt and an additive, the additive comprises an oxalic acid lithium phosphate additive with a structure shown ina formula (I), and can also comprise conventional additives such as vinylene carbonate (VC), 4-vinyl-1,3-dioxolan-2-one (VEC), 1, 3-propane sultone (PS), ethylene sulfate (DTD), tris (trimethylsilane) phosphate (TMSP) and the like. Under the combined action of the uniquely combined conventional additive and the oxalic acid lithium phosphate additive with the structure shown in the formula (I), the generation of cracks in positive electrode material particles in the circulation process can be inhibited, the dissolution of transition metal elements at high temperature can be reduced, the reduction reaction decomposition of a solvent on a negative electrode interface can be inhibited, the cycle performance, the high-temperature storage performance and the low-temperature performance of the ternary lithium ion battery are effectively improved.

The invention provides a non-aqueous electrolyte and a lithium ion battery containing the non-aqueous electrolyte. The non-aqueous electrolyte comprises a solvent, a lithium salt, an additive A and an additive B, wherein the additive A is an organic silicon nitrile compound, and the additive B is an oxazolone compound. Through the combined action of the additive A organic silicon nitrile compound and the additive B oxazolone compound, the cycle performance, the high-temperature storage performance and the low-temperature performance of the high-voltage lithium ion battery, especially the ternary high-voltage lithium ion battery, are effectively improved.

The invention belongs to the fields of environment protection technologies and denitration catalysis, and specifically relates to a cerium oxide carrier based flat type high temperature sulfur-resistant SCR denitration catalyst and a preparation method thereof. Rod like nano cerium oxide is taken as the carrier, tungsten trioxide is taken as the active component, tin dioxide is taken as the catalyst additive, inorganic and organic structure additives are added to improve the mechanical properties and pore structure of the catalyst, and finally the flat type SCR denitration catalyst, which is suitable for a high temperature sulfur containing environment, is obtained by a rolling-coating technology. The provided catalyst has the advantages of excellent high temperature (450-700 DEG C) denitration activity, thermal activity, and sulfur resistant property, at the same time, the production technology is simple, the problem that a conventional SCR denitration catalyst is inactivated in hightemperature flue gas during the sintering process is solved, and the catalyst has a wide application prospect in industry.

The invention provides an aluminothermic welding post-weld heat treatment process for a bainite steel rail. The post-weld heat treatment process comprises the following steps of: step (1). cooling a joint obtained by aluminothermic welding to a room temperature, heating the joint for 5-10 minutes, and carrying out heat preservation for 5-10 minutes; then carrying out slow cooling treatment on the joint obtained through heat preservation treatment at a cooling speed of 0.2-0.8 DEG C / s until the temperature of the joint reaches 100 DEG C or below; and step (2). heating the joint treated in the step (1), then carrying out heat preservation, and naturally cooling to a room temperature.

The invention relates to the technical field of nano materials and electrochemistry and relates to an electrode material with ultrafine MoO2 nano-particles uniformly bridged inside a flaky carbon matrix and a preparation method of the electrode material. The material can be used as a lithium ion battery negative electrode active material with high capacity and long cycle life; a three-dimensionalflower-shaped structure formed by stacking and interweaving flaky carbon matrix substructures, the thickness of the sheet layer of the carbon matrix is 10-20 nm; the diameter of a single flower-shapedstructure formed by the carbon substrate is 2-6 microns; and the diameter of MoO2 nano-particles is 1-3 nm. The nanometer material can be used as a lithium ion battery negative electrode material. The material disclosed by the invention has the characteristics of simple process, mild reaction conditions and excellent electrochemical performance.

The invention provides a ZnIn2S4 sodium-ion battery negative electrode material and a preparation method thereof. Specifically, a precursor solution is transferred into a 50 mL polytetrafluoroethylene reaction kettle, the reaction kettle is placed in a container filled with inert gas, the inert gas is introduced into the precursor solution for 10-30 min to drive dissolved oxygen in the precursor solution, the influence of oxygen on Zn is avoided, and large-scale ZnIn2S4 particles with good crystallinity and a uniform microflower spherical microstructure are obtained.

The invention discloses a magnetic nanorod demulsifier, a preparation method thereof and a method for treating nano-emulsion by using the magnetic nanorod demulsifier, and belongs to the technical field of demulsifiers. The preparation method of the demulsifier comprises the steps that FeCl3. 6H2O and FeSO4. 7H2O are dissolved in deionized water under the N2 introduction condition to obtain a ferric salt solution, the molar ratio of Fe < 3 + > to Fe < 2 + > is 2.15, polyethyleneimine is taken and dissolved in distilled water to obtain a polyethyleneimine solution, the molecular weight of polyethyleneimine is 10000, and the molar ratio of N to Fe is not lower than 1.47; the polyethyleneimine solution is added into the ferric salt solution dropwise while continuously introducing N2 and stirring, concentrated ammonia water is dropwise added at the water bath temperature of 50-80 DEG C, stirring is carried out to react for 1-4 hours, solid particles in the reaction solution are separated by using a magnet, the solid particles are cleaned with deionized water, re-dispersing the solid particles into the deionized water, a glutaraldehyde solution is added, and stirring, uniformly mixing and magnetic field separation are carried out to obtain the demulsifier. The demulsifier prepared by the preparation method disclosed by the invention can be used for efficiently demulsifying the nano-emulsion of which the mass ratio of the surfactant to the oil is 0-0.909.

The invention discloses a preparation method and application of a bifunctional electrocatalyst, and belongs to the technical field of electrocatalytic materials. According to the technical scheme, the preparation method is characterized in that an MOF precursor is introduced into a high-conductivity one-dimensional carrier shell layer in situ and then is stably compounded with a metal current collector, then electrochemical in-situ activation is carried out, and finally the OER / HER bifunctional electrocatalyst is prepared. The nano bifunctional electrocatalyst prepared by the invention has a multi-stage assembly structure and a multi-dimensional material composite structure characteristic, is beneficial to improving the electrocatalytic activity of the bifunctional electrocatalyst OER / HER and prolonging the service life of the bifunctional electrocatalyst OER / HER, and has a relatively good application prospect in catalysis of water splitting.

The invention discloses a method and device for electromagnetically assisted laser printing of NiCrAlY-Al2O3 ceramic. The device comprises a working cylinder, two first excitation coils, a laser headand a galvanometer, wherein the two first excitation coils are fixedly installed at two sides of a forming area of the working cylinder separately; a magnetic induction line formed between the two first excitation coils covers the whole forming area of the working cylinder; the laser head and the galvanometer are both installed above the working cylinder; and laser emitted by the laser head is reflected by the galvanometer and then emitted into the forming area of the working cylinder. Additive printing is carried out in a layer-by-layer powder laying and laser printing manner, and convectionof a metal solution in a molten pool is suppressed through the excitation coils, so that the mechanical performance of the functionally graded material is improved.

The invention provides a high-internal-phase beta-carotene nano-emulsion as well as a preparation method and application thereof, and belongs to the technical field of carotene emulsions. The preparation method of the high-internal-phase beta-carotene nano-emulsion provided by the invention comprises the following steps of (1) mixing a water-soluble protein carrier with water to obtain a wall material water phase; (2) mixing beta-carotene and medium chain triglyceride to obtain a core material oil phase; and (3) mixing the wall material water phase and the core material oil phase to obtain a crude emulsion, mixing the crude emulsion with a stabilizer, and sequentially carrying out high-pressure homogenization treatment, high-pressure microjet treatment and sterilization treatment to obtain the high-internal-phase beta-carotene nano-emulsion. The high-internal-phase beta-carotene nano-emulsion prepared by the preparation method provided by the invention has the advantages of excellent microscopic stability, no layering and good storage stability, and the embedding rate and bioavailability of beta-carotene in the high-internal-phase beta-carotene nano-emulsion are high.

The invention discloses a non-fullerene receptor with synergistic assembly performance as well as a preparation method and application thereof. The non-fullerene receptor comprises oligomeric ethylene glycol side chains which are substituted at different positions and have different lengths. The non-fullerene receptor is used as a guest component, so that the active layer (main body) component is dissolved in various non-halogen solvents, the compatibility and phase separating size and morphology among the active layer components are regulated and controlled, and the dependence of the active layer on low-boiling-point and high-toxicity halogen-containing solvents is reduced. In addition, the object non-fullerene receptor can regulate and control the crystallization kinetics of the subject in a high-boiling-point solvent through a self-assembled side chain, the crystallization time of receptor molecules is prolonged, the overall crystallinity of the active layer is improved, and the dependence of active layer processing on a post-treatment process is reduced. The three advantages are combined, the photoelectric conversion efficiency of the organic solar cell processed by the high-boiling-point and green solvent is greatly improved, an annealing process is not needed, the device preparation process is simplified, and the device preparation energy consumption is reduced.

The invention relates to a preparation method of a high-temperature-resistant and wear-resistant brake pad, belonging to the technical field of brake pad preparation. In accordance with that invention, titanium pow, Carbon powder, aluminum powder and iron powder are mixed, A metal composite product is prepare by adding urea and absolute ethanol, oxidizing graphite powder, A modified mixture is prepared by reduction and modification, A metal composite product of that mix slurry, A high-temperature-resistant and wear-resistant brake pad is obtain by mixing that modify mixture and pressing the mixture into a mold, Volatilization of urea particles, A metal mixture is microscopically porou, in the pores of the metal mixture filled with the modified nano-graphene, making the microstructure of the metal mixture stronger, The impact resistance and mechanical strength of the brake pads are effectively improved, and the high temperature resistance and strength of the metal mixture can be greatlyimproved by the introduction of titanium, and the high temperature resistance of the metal mixture can be further improved by the modified graphene, and the carboxyl and ester groups in tung oil canimprove the mechanical strength and wear resistance of the brake pads, so that the brake pads have a broad application prospect.

The invention discloses a functional film preparing method of molten substrate surface, which is characterized by the following: adopting the material of solid-phase low-melting point and low vapor pressure at ambient temperature; elevating substrate temperature before depositing film; melting film for liquid phantom background; evaporating film material atom and depositing to liquid level substrate surface with the method of magnetron sputtering or heat evaporation; adopting the method of diffusing, formatting the core, rolling, aggregating to grow functional film of characteristic grain arrangement; reducing substrate temperature to room temperature after finishing aggradation; curing background; keeping microconfiguration of film stable. The method simplifies technique, which reduces the cost.