35results about How to "Help with migration" patented technology

The invention discloses a latent heat storage type gypsum-based building material which is formed by combining a composite phase change material with building gypsum, wherein, the composite phase change material takes expanded graphite as a adsorbing medium; the mixing amount of the composite phase change material is 3 percent-6 percent of the total amount of the material; the mixing amount of the building gypsum is 94 percent-97 percent of the total amount of the material; the expanded graphite is made from expandable graphite, namely crystalline flake graphite processed by intercalation, the expandable graphite presents a flake shape, the granularity is 40-60 meshes, the carbon content is larger than or equal to 99 percent, and the expansion multiple is 200 mL/g-300 mL/g; and the phase change material is paraffin wax, the phase-transition temperature thereof is 50 DEG C-70 DEG C, the phase-transition temperature of butyl stearate is 18 DEG C-24 DEG C, and the phase-transition temperature of palmitic propyl ester is 18 DEG C-24 DEG C. The building material can play the roles of adjusting the environmental temperature and reducing the building energy consumption without influencing original functions.

The invention provides a novel dual-layer nerve conduit. The novel dual-layer nerve conduit consists of an electrospin decellularization pig nerve substrate conduit layer, and a PLCL layer arranged onthe outer layer of the electrospin decellularization pig nerve substrate conduit layer. Besides, the invention provides a preparation method of the novel dual-layer nerve conduit. The preparation method comprises the following steps of (1) pretreating pig nerves; (2) performing decellularization on the pretreated pig nerves; (3) performing crushing and drying treatment on nerves after being subjected to decellularization; (4) performing electrostatic spinning on the dual-layer nerve conduit layer; and (5) performing post-treatment on the dual-layer nerve conduit layer. The novel dual-layer nerve conduit prepared by the method disclosed by the invention has good biocompatibility and favorable machinery support; an inner-layer decellularization matrix contains various kinds of functional proteins, including collagen, proteoglycan, glycosaminoglycans and nerve growth factors, proliferation, migration and axon growth of schwann cells can be promoted, and the outer-layer PLCL can also effectively prevent hyperplasia of fibrous connective tissue and invasion of surrounding tissue.

The invention discloses a high-hydroscopicity modified polyester fiber cotton sliver and a preparation method and the application thereof. Sepiolite fiber with rapid moisture absorption and a releaseproperty is introduced into polyester fiber to improve the water absorption effect of the polyester fiber; then the polyester fiber is washed with alkali to increase the surface roughness of the fiber, thereby lowering the surface tension during moisture absorption and achieving a rapid water absorption effect; furthermore, holes and trenches which are used for communicating the inside with the outside are produced by etching the surface of the fiber form communicated pores, so that the moisture is easy to absorb and discharge; then, a hydrophilic polyvinyl alcohol membrane covers the surfaceof a fiber bundle, so that the hydrophilcity is higher, which contributes to migration of the moisture from the surface of the fiber to the inside of the fiber; moreover, the reduction of the water absorption effect due to the fact that solid particles in a coating block the pore structure on the surface of the fiber can be prevented. The modified polyester fiber cotton sliver disclosed by the invention can be applied to a paint roller brush, so that the absorption amount of a coating such as paint is increased; furthermore, the cotton silver can be repeatedly used after being used and then cleaned, so that the waste of resources is reduced.

The invention discloses a SnNb2O6 nanosheet, a preparation method thereof and application of the SnNb2O6 nanosheet in preparation of a lithium battery, and belongs to the technical field of preparation of materials and lithium ion battery materials. The preparation method comprises the following steps: carrying out hydrothermal reaction on a certain amount of K8Nb6O19, a certain amount of SnCl2.2H2O and an ethanol aqueous solution, and cooling, centrifuging, washing and drying to obtain the SnNb2O6 nanosheet; and mixing and grinding a certain amount of the SnNb2O6 nanosheet, sodium carboxymethylcellulose and acetylene black, adding water and preparing into mixed slurry, and uniformly coating a copper plate with the mixed slurry as an anode of a lithium ion battery. The preparation method of the SnNb2O6 nanosheet disclosed by the invention has the advantages of simplicity and convenience in operation, low cost and the like. The SnNb2O6 nanosheet prepared by the method is high in purityand good in crystalline form, and a large number of SnNb2O6 nanosheets can be synthesized. The lithium ion battery which takes the SnNb2O6 nanosheet as the anode has high specific capacity and good cycle performance and rate capability.

The invention relates to flavor celluloses and an injection molding method. The flavor celluloses comprise the following raw materials: 60-90 parts of celluloses, 20-30 parts of plasticizer, 0-3 parts of pigment powder and 0.01-0.1 part of flavoring agent, wherein the plasticizer added to the celluloses is conductive to the transfer of the flavoring agent in the celluloses, so that the durability of flavor can be remarkably enhanced without the addition of other compatilizers. The prepared flavor celluloses have high flavor strength and strong flavor durability; the problem of short time of duration of the flavor of conventional celluloses is solved; multicolor cellulose boards manufactured by the flavor celluloses have high elasticity, good air permeability, no electrostatic adherence, no toxicity, very good liquid permeability, good adsorptivity and wide application range, is anallergic after being in contact with skin for a long term, can be dry-cleaned or washed with water and can be manufactured into multiple products such as tool handles and hair pins. The injection molding method of the flavor celluloses is simple in process and low in production cost.

The invention provides a preparation method of 3D printed silk protein hydrogel. The preparation method includes the following steps: preparing pre-crosslinked silk protein hydrogel and 3D printed silk protein hydrogel, and specifically includes adding double-bond modified cyclodextrin and a photoinitiator into a silk protein solution, stirring to obtain single-network cross-linked silk protein hydrogel, and irradiating the single-network cross-linked silk protein hydrogel by UV light to form the pre-crosslinked silk protein hydrogel; crosslinking tyramine radicals on molecular chains of the cyclodextrin and silk protein in fiber filaments through 3D printing, and performing layer-by-layer stacking to form the 3D printed silk protein hydrogel. The invention further provides the 3D printedsilk protein hydrogel. The preparation method of the 3D printed silk protein hydrogel can effectively solve the problem of inter-layer separation of the 3D printed silk protein hydrogel, the obtainedsilk protein hydrogel is beneficial to adhesion and spreading of cells to materials in the cell culture process, and application of silk protein hydrogel materials to cell migration and proliferationin the cell culture process is facilitated.

The invention discloses a preparation method of a bletilla striata polysaccharide composite cytoskeleton. The method comprises the steps that (1) bletilla striata polysaccharide is prepared; (2) oxidized konjac glucomannan is prepared; (3) the bletilla striata polysaccharide and the oxidized konjac glucomannan are taken to be added into distilled water, heating, stirring and uniform mixing are carried out, sufficient dissolution is carried out, then bubbles are removed by standing overnight at 4 DEG C, pre-freezing, freezing and vacuum drying are carried out to obtain the bletilla striata polysaccharide composite cytoskeleton. The preparation method of the bletilla striata polysaccharide composite cytoskeleton has the advantages that the cytoskeleton with a controllable void ratio and excellent network mechanical property is obtained by blending the bletilla striata polysaccharide and the oxidized konjac glucomannan, and the problems of the single raw material source, inhomogeneous porosity and uncontrollability of an existing cytoskeleton can be effectively solved; the provided bletilla striata polysaccharide composite cytoskeleton has good biocompatibility, tissue inductivity andnetwork mechanical property, has a good market prospect in the field of tissue engineering, and is conductive to the migration and proliferation of stem cells, vascular endothelial cells and the likeand the angiogenesis.

The invention discloses a composite material and a preparation method and application thereof.The composite material comprises carbon fibers and polyaniline particles attached to the carbon fibers, holes exist in the composite material, and the hole diameter of the holes is smaller than or equal to 4nm. A hierarchical structure and a nitrogen-containing structure (pyridine nitrogen, pyrrole nitrogen, nitric oxide and the like) can be introduced, so that the electrochemical performance of the material can be effectively improved; the nitrogen-doped composite material is carbonized and activated to synthesize a porous carbon material with a hierarchical pore structure, so that migration and storage of lithium ions are facilitated, and the capacity of the material is improved.

The invention discloses a high-voltage-resistant insulating positioning ceramic material, and relates to the technical field of ceramic materials. The invention discloses a high-voltage-resistant insulating positioning ceramic material which is prepared from the following raw materials in parts by weight: 50-65 parts of aluminum oxide, 5-10 parts of aluminum nitride, 15-20 parts of titanium oxide,5-10 parts of beryllium oxide, 5-10 parts of magnesium oxide, 2-4 parts of dispersing agent, 1-1.5 parts of binding agent and 0.5-1 part of defoaming agent, wherein the dispersing agent is barium stearate and polyethylene glycol, and the binding agent is water glass and polyvinyl butyral. In addition, the invention also provides a preparation method of the high-voltage-resistant insulating positioning ceramic material. The high-voltage-resistant insulating positioning ceramic material disclosed by the invention has excellent wear resistance, high strength and high toughness, works under a high-temperature condition, resists high voltage, is insulating and non-conductive, is not easy to deform, wear and break, and prolongs the service life of a bearing.

The invention discloses a silicon nitride-based ceramic welding sealing component and a preparation method thereof, and relates to the technical field of metallized ceramic processing. The invention discloses a silicon nitride-based ceramic welding sealing component which comprises a silicon nitride ceramic matrix and a metallization layer, the silicon nitride ceramic matrix is prepared from modified silicon nitride, mullite fiber, aluminum nitride, calcium oxide, titanium oxide, a binder and a dispersing agent through the steps of modified silicon nitride preparation, mixing, granulation, primary sintering, secondary sintering and the like; raw materials of the metallization layer comprise copper powder, tungsten powder, copper oxide, yttrium oxide, zinc oxide and an organic binding agent. The invention further discloses a preparation method of the silicon nitride-based ceramic welding sealing component composed of the metallization layer and the silicon nitride ceramic matrix. According to the silicon nitride-based ceramic welding sealing component, the density of the silicon nitride ceramic matrix is improved, the silicon nitride-based ceramic welding sealing component has excellent strength, hardness and fracture toughness, the tensile strength of the sealing component is improved, and the silicon nitride-based ceramic welding sealing component has excellent high-temperature resistance.

The invention provides a memory, a programming operation method thereof, a peripheral circuit and a memory system. The memory sequentially comprises an array common source electrode, a bottom layer, a middle layer, a top layer and a bit line which are connected in series along a preset direction, and the programming operation method of the memory comprises the following steps: performing pre-charging of programming operation: providing a first voltage for the array common source electrode and the bit line; a second voltage is provided for a programmed state storage unit in the memory, so that a channel in the programmed state storage unit is conducted, and the programmed state storage unit is located at least one of the middle level and the top level; and performing programming operation on the middle to-be-programmed storage unit in the middle level.

The invention provides a solid electrolyte, and a lithium metal anode and a preparation method thereof. The solid electrolyte is a composite polymer electrolyte formed by compounding lithium lanthanumtitanium oxide and linear polyurethane. The preparation method comprises the following steps: firstly, preparing lithium lanthanum titanium oxide particles with a complete crystalline phase through aprocess of combining hydrothermal synthesis and high-temperature calcination; and then, blending and stirring the lithium lanthanum titanium oxide particles and linear polyurethane, and carrying outsolvent evaporation treatment to prepare the solid electrolyte. The lithium ion conductivity of the solid electrolyte prepared by the method at room temperature reaches 3.8*10<4>Scm<1>. Meanwhile, thebattery assembled by the solid electrolyte shows excellent cycle performance and excellent specific capacity at room temperature. The lithium metal anode can be obtained by compounding the solid electrolyte and a lithium metal sheet.

The invention provides bio-based ionic gel as well as a preparation method and application thereof, and relates to the technical field of hydrogel. The bio-based ionic gel provided by the invention comprises a sodium alginate ionic gel matrix and a hollow tube structure material which is directionally arranged in the sodium alginate ionic gel matrix. According to the preparation method, the sodium alginate ionic gel matrix has relatively high porosity, so that the ionic conductivity of the material is improved; the hollow tube structure material is directionally arranged in the sodium alginate ionic gel matrix, so that ion migration is facilitated, and the ionic conductivity of the bio-based ionic gel can be further enhanced; and the result of the embodiment shows that the ionic conductivity of the bio-based ionic gel provided by the invention is 0.02-0.17 S/cm.

The invention relates to a medical hemostatic polysaccharide dressing core. The medical hemostatic polysaccharide dressing core comprises a substrate layer, a dressing core layer, a bonding layer and a glossy surface paper removing layer, wherein the dressing core layer comprises a first dressing layer, a second dressing layer and a third dressing layer which are stacked and laminated together; an annular groove is formed in the center of the substrate layer, and the first dressing layer is arranged in the annular groove; a square groove is formed in the middle of the first dressing layer, the second dressing layer is arranged in the square groove, a plurality of holes are formed in the second dressing layer, and each hole is filled with the third dressing layer; the bonding layer is arranged between the edge of the substrate layer and the groove, and the glossy surface paper removing layer is bonded on the surface of the substrate layer through the bonding layer and covers the core applying layer; and the first dressing layer is a chitosan fiber membrane layer and is formed by electrospinning chitosan and glycerol according to a weight part ratio of 10: 2. According to the medical hemostatic polysaccharide dressing core, the problems that an existing wound dressing is poor in breathability and secretion absorption capacity, and then, the wound healing efficiency is lowered are solved.

The preparation method comprises the following steps: under a stirring condition, dropwise adding a manganese-based compound aqueous solution into a cobalt potassium cyanide aqueous solution, stirring for a period of time to obtain a mixed solution, and carrying out suction filtration cleaning and drying treatment on the precipitate of the mixed solution to obtain the sulfur-doped manganous-manganic oxide nano material. A precursor material manganese cobalt prussian blue is obtained; ultrasonically dispersing the precursor material in ethanol, then adding a sodium sulfide aqueous solution under a stirring condition, and continuously stirring until the materials are uniformly mixed to obtain a mixed solution; transferring the mixed solution into a stainless steel high-pressure reaction kettle, carrying out hydrothermal reaction, cooling to room temperature after the reaction is finished, centrifuging, cleaning and collecting a product, and drying to obtain the sulfur-doped manganous-manganic oxide nano material. The sulfur-doped manganous-manganic oxide nano block material with the nanoscale size is obtained by regulating and controlling the nanoscale size and doping sulfur atoms, and the nano material is used as a battery piece of a zinc ion battery and shows excellent electrochemical performance.

The invention discloses a large offshore floating island which is composed of a center island (1), connecting galleries (2) and side island modules, wherein the side island modules comprise a circularside island (3), a square side island (4), a wharf side island (5) and a fish culture net cage side island (6); the connecting galleries (2) are strip-shaped, are used for rigidly or flexibly connecting different side island modules with the central island (1), and are detachable; all types of side island modules form a large floating island which is integrally scattered, and the large floating island is integrally moored on the sea. Thus, the transportation and installation problems of offshore floating cities are solved, and the near-shore ecological damage caused by sea reclamation is effectively avoided.