41results about How to "Broad research prospects" patented technology

The present invention is one kind of type-D cast iron containing Pb, As and Sn and with raised performance. The present invention is superior to available technology, in which Pb, As and Sn are harmful to the performance of cast iron. The type-D cast iron of the present invention contains: C 3.9-4.5 (in weight portions, the same below), Si 1.2-1.6, Mn 0.6-0.95, P not more than 0.07, S not more than 0.04, Pb 0.005-0.009, As 0.03-0.08, Sn 0.1-0.4, Al 0.01-0.02 and Ti 0.04-0.09, except Fe. The type-D cast iron of the present invention as one new low cost engineering material has very high strength performance and excellent antioxidant performance, and may be used in high strength parts, such as crank shaft and cam shaft in refrigerator and compressor, heat resisting parts, such as glass mold, and heat resisting and wear resisting casting, such as roller.

The invention discloses a phenolic resin/coal tar pitch composite-base modified hard carbon negative electrode material and a preparation method and application thereof, and belongs to the field of electrochemistry. According to the phenolic resin/coal tar pitch composite-base modified hard carbon negative electrode material, phenolic resin and coal tar pitch serve as hard carbon precursors, and the mass ratio of the phenolic resin to the coal tar pitch is 2:1-4. The phenolic resin is modified through phosphoric acid, and the mass ratio of the phosphoric acid to the phenolic resin is 1-5:10. The particle size range of the hard carbon negative electrode material is 10-50 microns. The primary coulombic efficiency of the negative electrode material under the 0.5 C multiplying power is 80.55%, under the 2 C multiplying power, the volume is kept to be about 221 mAh/g after recycling is conducted 300 times, the volume does not greatly differ from the volume under the 0.5 C multiplying power and the 1 C multiplying power, and it shows that good volume maintaining performance and coulombic efficiency are achieved.

The invention discloses a method for leaching lithium form coal ash. The method includes the steps of 1), a sintering process, namely weighing the coal ash, sodium carbonate and calcium carbonate in the mass ratio of 1:0:1-1:0:0.8:1, performing even mixing in a corundum crucible, placing the mixture in a muffle furnace for roasting for 60-100 minutes at the temperature ranging from 1000DEG C to 1200DEG C, cooling to indoor temperature and grinding the mixture to 200 mesh with a ball grinding mill; 2), a leaching process, namely evenly mixing a well-ground clinker with a sodium carbonate solution 3-8% in concentration in the solid-to-liquid ratio of 1:15-1:25 prior to transferring to a colloid grinder, subjecting the mixture to mechanical grinding for 30 minutes prior to transferring to a high-pressure kettle, cooling mixed liquid in the high-pressure kettle after high-pressure cooking for 20-60 minutes at the temperature ranging from 100DEG C to 150DEG C is completed prior to performing extraction filtration to obtain lithium leaching liquid. The method for leaching the lithium form the desiliconized coal ash through alkali sintering-dilute alkali dissolution is put forward for the first time, broad research prospects for extracting the lithium form the coal ash are achieved, a foundation is laid for research in developing lithium resources and application strategies, and meanwhile, industrial utilization valve of the coal ash is improved.

The invention discloses a biochar-based thermosetting resin composite material and a preparation method thereof. The preparation method of the biochar-based thermosetting resin composite material comprises the following steps: (1) pre-treating a biochar raw material, specifically directly taking crushed biochar powder; (2) uniformly mixing the crushed biochar powder with thermosetting resin (one or more selected from epoxy resin, phenolic resin, amino resin, urea resin, unsaturated polyester resin and the like), a curing agent and the like; (3) carrying out filling; and (4) carrying out curingand forming. The preparation method of the biochar-based thermosetting resin composite material is simple in process and is environmentally friendly, the prepared biochar-based thermosetting resin composite material is high in mechanical performance, and high-value comprehensive utilization of renewable biomass resources is achieved.

The invention discloses a detection method of irradiated dried seafood, comprising a sample pretreatment step, a QTRAP-UPLC-MS/MS detection analysis step, and an irradiation dose quantitative detection step. A variety of amino acids and isomers thereof can be separated at the same time, and a qualitative analysis, a quantitative analysis, and a secondary qualitative analysis can be made. The method can be used to judge whether dried seafood is irradiated or not and determine the irradiation dose. The result is reliable. The limit of detection is low. The method is suitable for rapid detection of irradiated dried seafood.

The invention relates to a method for regulating the thermoplasticity and toughness of redox-modified plant fiber. The method comprises the following steps: (1) performing pretreatment on plant fiber;(2) adding an oxidizing agent solution for a reaction, performing filtration and washing so as to obtain oxidization-modified plant fiber, adding a reducing agent solution for a reaction, and performing filtration and washing so as to obtain redox-modified plant fiber; and (3) adding a plasticizer, and mixing the plasticizer with the redox-modified plant fiber uniformly, wherein the plasticizer is a hydroxy plasticizer, an ionic liquid plasticizer, an eutectic solvent plasticizer, an ester plasticizer, an amine plasticizer, a glycidyl ether plasticizer or an inorganic salt plasticizer. Through the method, the flexibility of the redox-modified plant fiber material can be improved, the processing temperature of the plant fiber material can be reduced, and the processing window of the plantfiber material can be widened.

The invention discloses a pre-sodium-modified sodium ion battery positive electrode material, and a pre-sodium-modified method and application thereof. The method comprises the following step: in an inert atmosphere, reacting a sodium-ion battery positive electrode with an aryl sodium-modification reagent solution to obtain a pre-sodium-modified sodium-ion battery positive electrode wherein the aryl sodium modification reagent is one or more of biphenyl sodium, naphthalene sodium, pyrene sodium, anthracene sodium or phenanthrene sodium. A sodium-rich or over-sodium-rich positive electrode is obtained by reacting the positive electrode of the sodium-ion battery with the solution of the aryl sodium modification reagent, the half-battery first-cycle charge specific capacity is obviously improved and is matched with the efficiency of a negative electrode, the first-cycle discharge specific capacity after the whole battery is prepared reaches the theoretical specific capacity of the positive electrode, and the energy density reaches 300Wh/kg; and the method substantially improves the energy density and the cycle life of the battery, has the advantages of wide research prospect and application value, mild reaction conditions, good safety, good stability of the obtained battery, and industrial popularization and application prospect.

The invention discloses a Fe-doped ZnO nano-film as well as a preparation method and application thereof. A Fe-doped ZnO nano-material is successfully prepared on a GPET transparent conductive flexible substrate through a hydrothermal method, the photocatalytic performance of the Fe-doped ZnO nano-material is researched. Zinc nitrate hexahydrate, hexamethylenetetramine and ferric nitrate nonahydrate are taken as main reactants, firstly ion sputtering is conducted on the surface of a flexible substrate GPET to obtain a very thin ZnO seed crystal layer; then Fe-doped ZnO precursor solutions withdifferent concentrations are prepared; and the flexible substrate is vertically put in a reaction solution, and a Fe-doped ZnO nano structure is grown by a hydrothermal method to obtain the Fe-ZnO/GPET nano composite material which can be used as a photocatalyst. The product obtained through the hydrothermal reaction has a special regular hexagonal nanorod-like structure, has a strong degradationeffect on a methylene blue solution, has a wide research prospect in the fields of environmental governance and the like, and is suitable for large-area production and application.

The invention discloses a CO2 trapping device, a CO2 conversion device and a carbon trapping split type air conditioning system. The CO2 trapping device comprises a box body, a fan and at least one CO2 catcher, wherein the fan and the at least one CO2 catcher are respectively arranged in the box body; the fan is used for sucking indoor air into the box body, so that the indoor air flows through the CO2 catcher; the CO2 catcher comprises at least one CO2 adsorption plate used for adsorbing CO2 in air flowing through the CO2 catcher and a heating piece used for heating the CO2 adsorption plate so that the CO2 adsorption plate can release the adsorbed CO2. According to the CO2 trapping device, passive control over CO2 in indoor air can be achieved, the indoor air quality is improved, meanwhile, the ventilation rate is reduced, and human health is facilitated.

The invention discloses an aquatic animal breeding method aiming to solve the problem that seed reserving rate is low in conventional breeding methods. Families for seed reserving and performance testing are separated, related heritability coefficients rA are calculated according to results of performance testing, and selection of different seed selection methods is performed according to calculation results. By the method, seed reserving rate is lowered on the premise of not increasing cost, and selection response is improved greatly, so that the purpose of accelerating breeding progress is achieved. Therefore, the method has broad market and scientific research prospects.

The invention relates to an amide bridged organic polymer hole transport material and a synthesis method and application thereof. According to the design concept, a triarylamine group rich in electrons is used as an electron donating group, so that the conductivity is improved; and the binaphthalene ring structure is favorable for improving pi-pi accumulation among molecules, and meanwhile, the C2 symmetry axis of the binaphthalene ring enables the molecules to have a certain rotation angle, so that molecular aggregation is favorably inhibited. Experimental results prove that the amide bridged organic polymer hole transport material has very high hole mobility and thermal stability. In addition, the dissolvability of the molecule is improved by the non-conjugated structure of the amide group of the molecular skeleton. The designed amide bridged organic polymer molecule has a structure as shown in a formula (AI) defined in the description. The polymer has simple synthesis steps, no catalyst is added in the polymerization process, and the yield is high. The material has relatively high hydrophobicity, thermal stability, film-forming property and ductility, shows good photoelectric property and device stability when being applied to a perovskite solar cell as a hole transport material, and has a wide research prospect.

The invention discloses a method for designing the structure of a tree-shaped heat pipe through particle swarm evolution and application. According to the method, the evaporation section of the tree-shaped heat pipe is designed through the steps of geometric modeling of the tree-shaped heat pipe, establishment of the target function for designing the tree-shaped heat pipe according to the requirements of thermal design, calculation of the target function through the particle swarm evolutionary algorithm and the like, and the tree-shaped heat pipe structure with the good heat transfer characteristic can be obtained. According to the structure, the heat dissipation capacity of the whole heat pipe in some areas with large heat flow density can be improved by increasing the distribution density of the micro-channels in the areas, and wide research prospects are achieved.

The invention discloses mineralized collagen gel loaded with gingival mesenchymal stem cell exosomes and a preparation method of the mineralized collagen gel. The gel is prepared from the gingival mesenchymal stem cell exosome, mineralized collagen and chitosan/beta-sodium glycerophosphate. According to the invention, the exosome has anti-inflammatory and osteogenesis promoting effects, the mineralized collagen has osteoinductivity, the chitosan is antibacterial and has temperature-sensitive characteristic after the beta-sodium glycerophosphate is introduced, and the gel synthesized from the components can be injected into a bone defect area in a periodontitis state so as to promote local bone repair or bone amplification. The gel can improve the treatment effect of the exosome, significantly improve the drug absorption rate of the body and the local residence rate of the drug, has good biocompatibility and biological activity, provides a novel administration approach for macromolecular drugs, is an injectable use mode, and has good application prospects.

The invention discloses a PEO-coated hollow Sn-Ni alloy nanowire array, its preparation method and its application in lithium battery negative electrode materials, which solves the problem of poor stability of existing existing three-dimensional structure nanowires as lithium battery negative electrode materials The present invention includes steps: 1) preparing Ni nanowires by constant current electrodeposition; 2) using Ni nanowires as a template to prepare hollow Sn-Ni alloy nanowire arrays through current displacement reaction; 3) preparing by PEO solution infiltration method PEO-coated hollow Sn‑Ni alloy nanowire arrays. The prepared PEO-coated hollow Sn‑Ni alloy nanowire array was used as the negative electrode, and the lithium-ion battery was assembled and tested for performance. The reversible specific capacity of the PEO-coated hollow Sn‑Ni alloy nanowire array remained at 0.88 mAhcm‑after 200 cycles. 2. This is mainly due to the flexibility of the polymer and the buffering effect of its internal hollow structure on volume expansion.

The invention discloses a variable pillared ZSM-5 nanosheet molecular sieve and a preparation method thereof, and belongs to the technical field of catalysts. The pillared molecular sieve is composed of orderly arranged nanosheet layers and interlayer MFI structure columns, the pillared height is adjustable in the range of 4-7nm, and the method specifically comprises the following steps: 1) dissolving an inorganic base, an inorganic acid, a small molecule template agent, a silicon source and an aluminum source in water, and uniformly stirring to form gel; 2) aging under a stirring condition; (3) continuously adding a long-carbon-chain amphiphilic surfactant solution and uniformly stirring; 4) aging under a stirring condition; and (5) crystallizing to obtain the pillared ZSM-5 nanosheet molecular sieve. According to the preparation method disclosed by the invention, the limitation of single pillared interlayer spacing in pillared preparation of the nanosheet molecular sieve at the present stage is solved, the nanosheet molecular sieve with the variable pillared interlayer spacing is prepared by a double-template method, and the prepared variable pillared ZSM-5 nanosheet molecular sieve can be used as a catalyst in the catalytic fields of preparation of low-carbon olefins and the like, and has high catalytic activity.

The invention belongs to the technical field of anti-tumor pharmacy, and particularly relates to a 2, 6-disubstituted purine compound and application thereof, and the compound or pharmaceutically acceptable salt thereof, which can be used as an inhibitor of targeted EGFR L858R/T790M, has anti-tumor activity, can effectively inhibit the growth of cancer cells, and is simple in production method and low in cost.