385results about How to "Special structure" patented technology

A method for forming metal wires by microdispensing a pattern is disclosed. The method includes the steps of microdispensing a catalyst pattern on the substrate and forming metal wires by electroless plating. Before the step of microdispensing catalyst pattern, the surface properties of the substrate have been improved by a surface modification treatment.

The invention provides a vehicle carrying scheme that lifting racks are used for lifting a vehicle above a vehicle top so as to perform leap-type translation in order to solve the problems that existing parking devices with the comb teeth for supporting, storing and withdrawing the vehicle are low in using ratio of the ground, inflexible in application, poor in storing and withdrawing efficiency and the like. Besides, by means of mutually communicated storing and withdrawing rack channels which are distributed below all comb-shaped parking racks of a parking queue, comb-shaped storing and withdrawing racks of carriers can directly and rapidly move and operate between each comb-shaped parking rack and vehicle storing and withdrawing port, the process of lifting and putting the road vehicle to a garage can be simply finished by the aid of comb-shaped lifting racks which are arranged at positions of the vehicle storing and withdrawing ports, a system is effectively simplified, and the efficiency is increased.

The invention discloses an immobilized biological adsorbent containing phanerochete chrysosporium, the surface of which is uniformly wrapped by a layer of carrier Fe3O4 nanoparticles for fixation. The method comprises the steps of: first adding Fe3O4 nanoparticles into a phanerochete chrysosporium liquid medium containing tween 80, then inoculating a phanerochete chrysosporium spore suspension, conducting shaking cultivation so as to obtain the immobilized biological adsorbent. The invention also discloses application of the adsorbent in dye wastewater treatment. The biological adsorbent of the invention has high adsorption efficiency and large adsorption capacity, and can be effectively used for treating neutral red and lead in dye wastewater. The preparation technology and treatment technology in the invention are characterized by simplicity and low cost.

This invention provides flame-generated fine silica particles having an average particle size of 0.05 to 1 μm, wherein a fractal structure parameter α₁ at length scales ranging from 50 nm to 150 nm and a fractal structure parameter α₂ at length scales ranging from 150 nm to 353 nm satisfy the following formulas (1) and (2):

−0.0068S+2.548≦α₁≦−0.0068S+3.748  (1)

−0.0011S+1.158≦α₂≦−0.0011S+2.058  (2)

• • wherein S is a BET specific surface area (m²/g) of the fine silica particles, in the measurement of small-angle X-ray scattering. When used as a filler for a semiconductor-encapsulation resin or when used as a filler for a polishing agent or for a coating layer for ink jet papers, the fine silica particles are available at high content without substantial enhancement of the viscosity. Besides, when used as a filler for the resin, the fine silica particles improve the strength of the molding compound. Furthermore, when used as a toner additive for electrophotography, the fine silica particles improve the free-flow property of the toner without removal from the toner surfaces.

The invention discloses a processing method for compact Sirofil elastic yarns. The method includes that an elastic-filament pre-drafting device and a thread guide mechanism are additionally mounted on a compact core spinning frame; the elastic-filament pre-drafting device guides filaments and elastic filaments to enter front rollers through drafting rollers; roves are unwound from a rove reel and enter a drafting area formed by rear rollers, middle rollers and the front rollers through a yarn separator to be drafted by certain multiples; drafted roves together with two combined filaments enter a compacting area with a negative-pressure air intake device; compacted yarns are twisted and wound onto a bobbin to produce the compact Sirofil elastic yarns. By the processing method for spinning multicomponent yarns, winding and coring effects are achieved, spinning process is shortened, spinning end breakage is reduced, working efficiency of workshops is improved, and finished yarns have few fluff, high strength and good quality.

The invention discloses a core-shell structure composite material and a preparation method thereof, and an application of the core-shell structure composite material in a lithium ion battery. In the core-shell structure composite material, the main composition of the core is a hard carbon material, the shell is a composite coating layer formed by compounding nano lithium titanate particles and a carbonized binder, and the nano lithium titanate particles are fixed by the carbonized binder and are dispersed on the surface of the core. The method comprises the following steps: 1) preparing a hardcarbon material as an inner core; 2) by using nano lithium titanate particles, a binder and an inner core as raw materials, fixing nano lithium titanate on the surface of the inner core under the curing action of the binder to obtain a product composed of the inner core and a composite coating layer precursor coating the surface of the inner core; and 3) pre-sintering, and then sintering to obtain the core-shell structure composite material. According to the invention, the core-shell structure composite material has the advantages of high compaction, high capacity, high initial charge-discharge efficiency and good cycling stability, and has a wide application prospect in the field of lithium ion batteries.

The invention discloses a porous hollow copper oxide nano fiber and a preparation method thereof. The method comprises the following steps: 1) dissolving a copper salt and a polymer into ethanol so as to obtain a spinning solution; 2) carrying out electrostatic spinning on the spinning solution obtained in the step 1), and then sintering after electrostatic spinning is finished, so as to obtain the porous hollow copper oxide nano fiber. Compared with the traditional template method and coaxial electrostatic spinning method, the method disclosed by the invention is simple and practicable, and low in cost, and the obtained material is novel in structure and has an important potential application in the fields of preparations of catalysts, gas sensors or semiconductors and the like.

A composite electrode material and a method for manufacturing the same, a composite electrode comprising the said composite electrode material and a method for manufacturing the same, and a lithium-based battery comprising the said composite electrode are disclosed. Specifically, a composite electrode material of the present invention comprises a core or a core with a surface covered by a buffer layer, preferably a conductive diamond film, wherein a material of the core is at least one selected from the group consisting of graphite, Sn, Sb, Si, and Ge; and a graphene nano-wall layer grown from the core or the conductive diamond film covering the core.

The invention is a recycled solidfree micro-foam drilling fluid or a completion fluid, which comprises the following components in parts by weight: 1. 2-3 parts of recycled solidfree micro-foam composite treatment agent SD-LNA; 2. 0.5-1 part of low-density solidfree tackifier SD-LNV; 3 0.5-1 part of low-density modifier SD-LFD; 4. 0.5-1 part of low-density foam stabilizer SD-LFS; 5. 0.5-1 of low-density flow type modifier SD-LFR; and 6. 100 parts of water. According to a normal preparation method, the above substances are added into water successively, mixed and stirred evenly under normal temperature and normal pressure. The invention has the advantages of low density, high viscosity, small low fluid loss, good lubricating property, strong landwaste suspension property, easy maintenance,fine cleaning capability of wells, fine inhibitory capability on clay and shale, no micro-foam convergence, recycled use and the like, can be widely applied in engineering such as petroleum, geologicdrilling and the like, is particularly applicable to construction technology of well drilling and well completion of low-pressure reservoir and exhausted reservoir.

The invention relates to a preparation method for a POSS/PDMAEMA organic/inorganic hybrid material according to a thiol-ene click chemistry method. The preparation method comprises the following steps: obtaining PDMAEMA through synthesis according to an RAFT polymerization method; taking dimethyl phenylphosphine as a catalyst, taking n-hexylamine as a reducer, and conducting a reduction reaction on a dithioester group at the tail end of PDMAEMA to generate sulfydryl; conducting thiol-Michael addition reactions on the double bonds of PDMAEMA containing sulfydryl and POSS containing ethenyl according to the thiol-ene click chemistry method to generate a POSS/PDMAEMA organic/inorganic hybrid material with a temperature/pH dual response. The preparation method has the advantages that the prepared POSS/PDMAEMA organic/inorganic hybrid material is small in size, stable in chemical bond, and uniform in particle diameter; due to a click reaction to PDMAEMA, the hydrophilic performance of POSS is effectively improved; in a water solution, the POSS/PDMAEMA organic/inorganic hybrid material is excellent in temperature sensibility and pH sensibility; due to a special structure and the stimulus response performance, the POSS/PDMAEMA organic/inorganic hybrid material is a new-generation environment-friendly new material product, and can be applied to drug carrying, targeted release, metal ion recovery, environmental pollutant adsorption and other fields.

The present invention discloses a selenium-doped nano-silica sol capable of both inhibiting the absorption and accumulation of heavy metal in rice and producing a selenium-rich rice, and a preparation method thereof. The selenium-doped nano-silica sol of the present invention is prepared mainly by using a nano-silica sol as a carrier, sodium selenite and the like as a raw material, vitamin C and the like as a reducing agent, and polyvinylpyrrolidone and the like as an emulsifier, and doping and dispersing selenium in a specific ratio in a silica sol so as to form a selenium-doped nano-silica sol with a special structure and function. The selenium-doped nano-silica sol prepared according to the invention has high stability and high concentration, and is uniform and transparent, and has a silica content of up to 20% or more, a selenium content of up to 1% or more, and low impurity content. The selenium-doped nano-silica sol of the present invention has a pH close to neutral, wherein selenium, in a nano particle form, is dispersed in colloidal silica, with a particle size of less than 50 nm; and after the foliar application, it can significantly promote the growth of crops, inhibit the absorption and accumulation of arsenic and cadmium in crops, and increase the selenium content in crops, and has no toxic and side effects on crops, and is safe to application.

The invention discloses a carbon fiber composite artificial bone and its preparation method. The artificial bone includes a carbon fiber composite spring-shaped skeleton or includes a carbon fiber composite spring-shaped skeleton and a carbon fiber composite pin piece; the carbon fiber composite pin piece is arranged at one end or two ends of an empty cavity of the spring-shaped skeleton in an inserted mode or arranged in an empty cavity of the carbon fiber composite spring-shaped skeleton. The preparation method uses carbon fibers as raw materials, a spring-shaped carbon fiber prefabricated body is prepared through the knitting technology, and through density increasing, high-temperature purification and preparation of a wear-resistant coating, the carbon fiber composite spring-shaped skeleton is then obtained; the carbon fiber composite spring-shaped skeleton is combined with the carbon fiber composite pin piece, and an artificial bone is obtained. The artificial bone has the advantages of being light, good in biocompatibility, good in mechanical property and the like, especially the artificial bone is high in elastic deformation and good in toughness, can achieve the partial function of the cartilage, bending and shaping, and the practicability is high.

The invention relates to a complicated spiro-aryl fluorine material and preparation and application methods thereof, which belong to the organic photoelectric material scientific field, in particular to the complicated spiro-aryl fluorine material and the preparation method thereof. And the material is applied to organic electronic fields of organic rectifier diode, organic luminescence display, organic laser, etc. With the structure as is shown on the right, the compound material I has the advantages of: (1) having specific electronic structure and photoelectric properties, such as narrow emission spectrum; (2) maintaining high thermal stability and glass transition temperature, etc. Materials of the kind have commercial application potential in stable dark blue materials.

Disclosed is a depolymerized glycosaminoglycan from Thelenota ananas (dTHG), weight average molecular weight of which is about 8000˜20000 Da, and monosaccharide components of which are acetylgalactosamine (GalNAc), glucuronic acid (GlcUA), fucose (Fuc) or their sulfates (expressed as —OSO³⁻), in which molar ratio of GalNAc:GlcUA:Fuc:—OSO³⁻ is about 1:(1±0.3):(1±0.3):(3.5±0.5). Said dTHG is a potent endogenous inhibitor of factor X, which has good anticoagulant and antithrombotic activity, and can be used for the prevention and/or treatment of thrombotic diseases. Also provided is a method for preparing said dTHG, which comprises steps of 1) extracting and obtaining fucosylated glycosaminoglycan (THG) from the body wall of Thelenota ananas; 2) depolymerizing THG to obtain dTHG by method of peroxide depolymerization or method of peroxide depolymerization catalyzed by catalyst of the fourth period transition metal ions; 3) removing impurities with lower and/or higher molecular weight in dTHG.

An arrangement structure of a shifting actuator of an internal combustion engine mounted on a motorcycle is provided in which while the shifting actuator is provided externally of an engine case of the engine so as not to interfere with auxiliaries, it is protected without external protrusion and external appearance is kept satisfactory. An external wall of an engine case is partially inwardly recessed to form a recessed portion capable of accommodating a shifting actuator. An actuator body of the shifting actuator is disposed in the recessed portion. An attachment bracket attached to an end portion of the actuator body is fitted to a first fitting hole of an engine case outer lateral wall on the side of the recessed portion and is secured to the engine case outer wall. The motorcycle has a multistage transmission that can reduce its axial width to achieve compactness.

The invention relates to a top-bottom asymmetrical tert-butyl spirobifluorene compound. The compound of the invention has a structural formula as represented by (I), and in the structural formula, R1 can be any one of various electron-withdrawing groups and electron-donating groups, such as a variety of alkyl groups, substituted aryl groups, substituted heterocyclic radicals, substituted alkylene groups, substituted amino groups, chlorine, bromine and iodine, except tert-butyl groups. According to the invention, cheap and easily available 4,4'-di-tert-butyl-biphenyl is used a raw material and reacts with 2,7-biX-fluorenone (wherein X represents substituents) through bromination, X substituents on a fluorene ring are converted into a variety of functional groups, and other steps are also carried out so as to obtain the compound (I). The top-bottom asymmetrical tert-butyl spirobifluorene compound in the invention has the characteristics of low cost, a simple synthesis route, high yield, easiness in industrial production, a special spiro-conjugation effect, good dissolvability, high thermal stability and a wide applicability in the fields of organic light-emitting displays, organic non-linear materials, fluorescent probes and the like.

A roaster comprises a main container equipped with the space in the inner portion; an upper supporter including a flame hole equipped at the side facing the bottom side of the main container, and a roasting plate supporting part equipped at the circumference position of the flame hole, and is combined to the main container; a fuel vessel which has a fuel filling part is formed in the inner space and a spacer equipped in the outer periphery position of the fuel filling part, and which is positioned in the main container to be positioned at the opposite direction to the flame hole of the upper supporter and which is arranged as the state separated from the spacer.