114results about How to "Three-dimensional structure is stable" patented technology

The present invention belongs to the field of adhesive technology, and provides one kind of starch-base timber adhesive with excellent water resistance and its preparation process and application. The starch-base timber adhesive with excellent water resistance has wide material source, no environmental pollution and high adhesion strength, and may be used widely in timber adhesion.

The invention relates to a benzene-cored organic compound and application of the benzene-cored organic compound to OLED (organic light emitting diode) devices. The benzene-cored organic compound is high in glass transition temperature and molecular thermal stability, applicable in HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy level and high in Eg, and through device structural optimization, can effectively improve the photoelectric performance of the OLED devices and prolong the service life of the OLED devices.

The invention relates to the field of drilling fluid plugging and discloses a resin emulsion plugging agent composition, a preparation method thereof and application of the composition in a fracturedstratum. The composition comprises a water-based resin emulsion, a curing agent, a coupling agent and nano lithium bentonite, wherein with the total weight of the composition as a standard, the content of the water-based resin emulsion is 90.5-95.8 wt%, the content of the curing agent is 3-7 wt%, the content of the coupling agent is 0.2-0.5 wt%, and the content of the nano lithium bentonite is 1-3wt%. The resin emulsion plugging agent prepared by the method has uniform and stable dispersion performance, is solidified under a high-temperature condition after being injected into a crack, and forms a solidified body with high strength and toughness, wherein the cementation strength between the solidified body and the wall surface of rock is high. The composition is particularly suitable fora leaking stratum with multi-scale cracks which are formed together.

The invention discloses an inductive uterine slow release system. The incidence of uterine adhesion after an induced abortion operation is high, the re-adhesion is serious after a uterine adhesion operation, and no good solution is available at present. The system comprises a uterus-shaped elastic balloon stent, a slow release drug film, a catheter and a one-way inflation valve, wherein the uterus-shaped elastic balloon stent is a hollow isosceles triangle structural body; waists of the isosceles triangle are 3.5cm; the bottom edge of the isosceles triangle is 3cm; one end of the catheter is connected and communicated with the vertex angle end of the uterus-shaped elastic balloon stent; the other end of the catheter is connected with the one-way inflation valve; a plurality of annular scales are arranged on the outer side face of one end, close to the uterus-shaped elastic balloon stent, of the catheter; and the one-way inflation valve comprises an inflation valve and a pressure sensor. The uterus-shaped elastic balloon stent is coated with the slow release drug film, and the slow release drug film is made of fibrin glue and contains a slow release drug. The system is simple in structure and easy to operate, does not injure a uterine cavity easily, and can effectively avoid the uterine adhesion.

The invention discloses a hard carbon negative electrode material, a lithium ion battery and a preparation method and application of the hard carbon negative electrode material. The preparation method comprises the following steps: (1) carrying out cross-linking reaction on carbon source precursor powder and an additive to prepare a modified carbon source precursor, wherein the additive comprises a cross-linking agent, a modifier and a dispersing aid; (2) sequentially carrying out heat treatment and cooling on the modified carbon source precursor, and mixing the modified carbon source precursor with a lithium-rich agent to prepare a modified hard carbon precursor; and (3) carrying out vacuum carbonization on the modified hard carbon precursor to obtain the hard carbon negative electrode material. The hard carbon negative electrode material prepared by the method belongs to typical amorphous carbon and is high in pyrolysis yield, and the lithium ion battery prepared by taking the hard carbon negative electrode material as the negative electrode material is high in first reversible capacity, high in first coulombic efficiency, stable in property and good in batch consistency.

The invention discloses porous three-dimensional phosphaalkene as well as a preparation method and an application of the porous three-dimensional phosphaalkene. The porous three-dimensional phosphaalkene has a stable three-dimensional structure formed by self-crosslinking assembly of black phosphaalkene and has the porosity of 50%-98% and the specific surface area of 200-2000 m<2>/g. A relativelystrong electric field is applied to a two-electrode or multi-electrode system by using an electrochemical method, an intercalator and an auxiliary intercalator directionally move towards a black phosphorus crystal and enter an interlayer to destroy an interlayer force of the black phosphorus crystal, and black phosphorus interlayers are kept crosslinked, but an interlayer distance is increased, sothat the black phosphorus crystal expands and the porosity is enlarged, then, the expanded black phosphorus is treated by freeze-drying, and thus, the porous three-dimensional phosphaalkene is obtained. The porous three-dimensional phosphaalkene has excellent physical and chemical properties instead of increasing the wettability of an electrolyte to an electrode material, is also beneficial to the adsorption and diffusion of reactants and metabolites in a reaction process and can be applied to the field of hydrogen production under electrochemical catalysis.

The invention discloses a 3D memory device and a manufacturing method thereof. The 3D memory device includes a substrate, a gate stack structure, a plurality of channel columns and a plurality of channel holes, a doped region, a first conductive layer and a core part, wherein the gate stack structure is positioned above the substrate and comprises a plurality of gate conductors and a plurality ofinterlayer insulating layers which are alternately stacked; the plurality of channel columns and the plurality of channel holes penetrate through the gate stack structure; the doped region is locatedat the bottom of the channel hole and is formed in the substrate; the first conductive layer covers the inner wall of the channel hole and is in contact with the doped region; and the core part is located in the channel hole and above the doped region, the core part is doped polycrystalline silicon doped with impurity atoms with a certain concentration, and the doping concentration of the impurity atoms is adjusted so as to realize continuous adjustment of the surface warping degree of the 3D memory device. The warping degree of a wafer in an X direction or a Y direction is continuously adjusted by changing the doping concentration of impurity atoms doped in the core part in a grid line gap of the 3D storage device, and the problem of wafer warping is solved.

The invention relates to a spirofluorene derivative type organic compound and application thereof to organic light-emitting diodes (OLEDs). The spirofluorene derivative type organic compound has the advantages that spirofluorene is in loop connection with an indole ring fusion structure through carbon-carbon double bonds, the loop connection through the carbon-carbon double bonds increases material chemical stability and avoids branch chain group active position exposure, and the whole molecule is a large rigid structure and has high triplet-state energy level (T1); the indole ring fusion structure is large in steric hindrance, less prone to rotation and stable in three-dimensional space structure, and accordingly the compound is high in glass transition temperature and molecular thermal stability; in addition, the HOMO and LUMO distribution positions of the compound are separated from each other, so that the compound has appropriate HOMO and LUMO energy level; after the compound is applied to the OLEDs, the light-emitting efficiency of the OLEDs can be effectively increased, and the service life of the OLEDs can be effectively prolonged.

The invention discloses a sodium cobalt pyrophosphate/carbon/graphene positive electrode composite material, and a preparation method thereof. The preparation method comprises the following steps: dissolving a cobalt source, a sodium source and a phosphorus source into deionized water separately according to a stoichiometric ratio, adding an acidic metal complexing agent to adjust the pH, stirring uniformly, and adding a certain amount of prepared graphene solution into the solution; mixing uniformly, heating in a water bath pot to form gel, evaporating to dryness under a vacuum drying box to obtain a precursor, grinding the precursor, and sintering under protective gas to obtain a sodium ion battery positive electrode composite material Na2CoP2O7@C which is embellished on graphene. The preparation method provided by the invention is simple and mild in condition. The prepared sodium ion battery positive electrode material has uniform granularity and good appearance, and has high specific capacity and high voltage and shows excellent circulating stability when being applied to a sodium ion battery.

The invention discloses a bag for automatic cheese canning, which comprises a bag body with an insert edge structure; the bag body comprises a front surface, a back surface and insert edges on the left side and the right side; a certain width of bottom sealing line penetrating through the front surface, the back surface and the two insert edges is formed at the bottom of the bag body; a lower oblique angle is formed at the lower part of the bag body; the bag body consists of layered co-extrusion blown thin films with symmetrical structures of which the number of layers is seven-eleven; and each layered co-extrusion blown thin film is provided with an inner heat-sealed moisture barrier layer, an inner bonding layer, an inner oxygen barrier layer, an incense keeping core layer, an outer oxygen barrier layer, an outer bonding layer and an outer heat-sealed moisture barrier layer from inside to outside in sequence. The bag has the beneficial effects that a three-dimensional structure of the bag body is stable, the inner layer friction performance and the outer layer friction performance of the bag body are properly set, used materials are saved, and the strength is high. The bag is particularly suitable for automatic cheese canning.

The invention provides a chiral polyacid-based metal organic framework material. The chemical formula of the polyacid-based metal organic framework material is C74H101B2Zn2N22O84W24, and is recorded as ZnW-DPNDI-PYI1 and ZnW-DPNDI-PYI2 according to the chirality, wherein the DPNDI is N,N'-bi(4-picoline) naphthalimide and serves as a bridging ligand and a photosensitizer, and the PYI is L-pyrrolidine-2-imidazole and serves as a chiral ligand and an electron donor; crystals belong to a monoclinic system, and both the space group of the ZnW-DPNDI-PYI1 and the space group of the ZnW-DPNDI-PYI2 areP2(1). The chiral polyacid-based metal organic framework material is a multifunctional inorganic porous material, and has an asymmetric photocatalytic oxidation technology, and in the technology, a photocatalyst is driven by visible light to be an excited state, then the excited-state photocatalyst and substrates are subjected to an oxidation-reduction reaction, and therefore reactions of relatedfree radical types are completed.

The invention relates to a compound taking spirofluorene anthrone as a core, a preparation method and applications thereof, wherein the structure of the compound is formed by linking spirofluorene anthrone to a five-membered ring fused ring structure, and the whole molecule is a large rigid structure and has a high triplet state energy level (T1). According to the invention, the compound is high in structural stereoscopicity, large in steric hindrance and not easy to rotate, so the chemical stability of the material is improved, and the compound has high glass transition temperature and high molecular thermal stability; the HOMO distribution position and the LUMO distribution position of the compound are separated from each other, so that the compound has appropriate HOMO and LUMO energy levels; and with the application of the compound in an OLED device, the light emitting efficiency and the service life of the device can be effectively improved.

The invention discloses a compound taking a dibenzo five-membered heterocyclic ring as a core and an application thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is shown as a general formula (1) or a general formula (2), the compound provided by the invention contains a dibenzo five-membered heterocyclic parent nucleus structure, and has appropriate HOMO and LUMO energy levels, a relatively high triplet state energy level (T1) and a relatively low dipole moment. After the compound is applied to an OLED device, the luminousefficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

The invention relates to an organic compound taking fluorene as a core and application of the organic compound in an OLED (Organic Light Emission Diodes) device. The compound is of a structure that the fluorene is connected with a dibenzo five-membered ring combination structure by a carbon-carbon bond; by carbon-carbon bond connection, not only is the chemical stability of a material improved, but also an active position of a branch chain group is prevented from being exposed, and moreover, a whole molecule is of a bigger rigid structure and has a high triplet state energy level (T1); in addition, steric hindrance is great, rotation is not easy, and a three-dimensional space structure is more stable, so the compound has higher glass-transition temperature and molecular heat stability; besides, distribution positions of HOMO and LUMO of the compound are separated from each other, so that the compound has proper HOMO and LUMO energy levels; therefore, after the compound is applied to the OLED device, the luminous efficiency and the service life of the device can be effectively improved and prolonged.

The invention belongs to the technology field of household air conditioning heat dissipation and particularly relates to a microchannel radiator for an air conditioner. According to the microchannel radiator for the air conditioner, the surfaces of fin pieces of the radiator are coated with a graphene heat dissipation coating, the graphene heat dissipation coating comprises electrically-treated graphene, a silicon oxide nanofiber material and nano-copper particles, and the nano-copper particles are deposited in a composite material formed by the electrically-treated graphene and silicon oxidenanofiber through a way of electrodeposition. By means of the microchannel radiator for the air conditioner, under the premise of ensuring the three-dimensional structure stability, the heat conduction effect is maximized, and meanwhile, the mechanical stability can be enhanced.

The invention relates to a preparation method of organic fertilizer gel particles for effectively improving soil compaction and provides a sodium carboxymethyl cellulose-polyvinyl alcohol-chitosan-silica cross-linking liquid. The cross-linking liquid is prepared through high-fiber support ingredients such as rice husk, peanut shells and straws as important aids, has three-dimensional network spacehole sizes, an adsorption capacity and a specific surface area better than those of the existing cross-linking agent and can store more organic substances. The granulation temperature and mode improve the binding force between the composite gel and base fertilizer granules and improve the swelling properties of the composite gel. The organic fertilizer gel granules can effectively improve the soil crust agglomeration, reduce the soil bulk density, absorb water, retain water, feed fertilizer and retain fertilizer. The test results show that the crop yield is high, the quality is good, the fruit is large, drought and waterlogging resistance is good, soil aggregate structure is stable, the water stability is 2mm-3mm and 20cm of the plough layer contains 70% or more of water stable soil granules with the sizes of 2-3mm.