467results about How to "Promote infiltration" patented technology

The invention discloses a high-strength short fiber carbon ceramic brake disc and a preparation method thereof, and the preparation method comprises the following steps: carrying out ball milling on silicon powder and carbon powder, mixing with thermosetting resin powder and thermoplastic resin powder, uniformly mixing carbon fiber and a coupling agent, adding the mixed powder, and uniformly mixing again. According to the short fiber carbon ceramic brake disc provided by the invention, the ball-milled silicon powder and carbon powder are uniformly dispersed in the matrix, meanwhile, the thermoplastic resin with good fluidity is added to form a network structure in the matrix, through holes are formed after carbonization, and the high-strength short fiber carbon ceramic brake disc is obtained. Silicon steam can enter in the ceramization process, and the problem that the carbon-ceramic composite material which is high in fiber content and large in thickness and formed at high temperature and high pressure is difficult to infiltrate can be effectively solved. The carbon-ceramic short fiber brake disc prepared by the method is low in aperture ratio and high in impact strength.

The invention discloses a porous substrate reinforced anion exchange membrane and a preparation method and application thereof, and relates to the technical field of anion exchange membranes. The porous substrate reinforced anion exchange membrane is prepared by the following steps: uniformly mixing a polyarylene alkylene type cationic polymer solution and a C1-C10 alcohol solvent, then coating two sides of a porous substrate with the mixture, and drying to obtain the porous substrate reinforced anion exchange membrane. And removing the solvent to obtain the product. According to the method, the porous substrate can be well infiltrated by the cationic polymer solution without pre-treating the porous substrate, so that the porous substrate reinforced anion exchange membrane with a sandwich-like structure is obtained. The film has outstanding swelling resistance and excellent mechanical properties, has good electrochemical properties, and has good application prospects in alkaline film energy conversion devices.

The invention discloses a centella asiatica plant extraction repairing agent and application thereof in cosmetics. The centella asiatica plant extraction repairing agent comprises the following components: an olive leaf extract, a centella asiatica root extract and an oat kernel extract. According to the preparation process of the centella asiatica plant extraction repairing agent, plant water-soluble active ingredients are obtained by adopting enzymolysis and alcohol extraction modes, plant oil-soluble active ingredients are obtained by adopting critical CO2 extraction, and then a novel preparation is prepared by adopting an ultrasonic emulsification technology, so that the repairing agent can permeate into skin cuticles more easily, the effect of active matters can be brought into full play, and the repairing agent has a good application prospect. When the composition is applied to cosmetics, a good repairing effect can be realized.

The invention provides a positive active material and a preparation method thereof, a positive pole piece, a battery and electric equipment, the change rate d of the characteristic peak interplanar spacing of the positive active material (104) is greater than or equal to 0.05% and less than or equal to 0.5%, d = (d before-d after) / d before * 100%, d before is the interplanar spacing of the characteristic peak of the positive active material (104) measured by an X-ray diffractometer before circulation, and d after is greater than or equal to 0.05% and less than or equal to 100%. And d, measuring the interplanar spacing of the characteristic peak of the positive electrode active material (104) by an X-ray diffractometer at 45 DEG C after circulation for 80 weeks. Therefore, the interplanar spacing change rate of the positive electrode active material before and after circulation is small, which shows that the crystal structure stability of the positive electrode active material is good, the positive electrode active material is not easy to pulverize in the long-term circulation process of the battery, and the cycle performance of the battery can be improved.

The invention provides an annual intercropping green manure planting method suitable for orchards in plateau areas. According to the method, tartary buckwheat and vicia villosa are mainly adopted as green manure plants, and a plurality of key steps of land parcel selection, soil preparation before sowing, variety selection, seed treatment, green manure sowing, plant management, cutting and covering and the like are clearly stipulated. The method can improve the utilization rate of nutrients in the soil, increase the content of organic matters in the soil, improve the soil quality, effectively inhibit growth of weeds between rows and on ridges of the organic apple orchard, reduce the weeding cost, and solve the problem of high labor cost caused by long-term ploughing and weeding of the organic apple orchard in the plateau mountain area of Yunnan province. Excessive dependence on organic fertilizer is effectively relieved, and the method is an annual intercropping mode for comprehensively improving ecological benefits and economic benefits of the orchard.

The zero-coating rice cooking utensil comprises a pot body which is used for making contact with a food material face and made of a stainless steel metal layer, the inner surface of the stainless steel metal layer is provided with micron-sized biting pattern paths, the micron-sized biting pattern paths comprise hydrophobic concave-convex parts which are distributed randomly, and the hydrophobic concave-convex parts are arranged on the inner surface of the stainless steel metal layer. And the roughness of the hydrophobic concave-convex part on the inner side wall of the pot body is smaller than that of the hydrophobic concave-convex part on the inner bottom wall of the pot body. The micron-sized biting patterns are arranged on the inner surface of the stainless steel metal layer, more violent local heat convection can be formed in the early stage of rice cooking, rice grains are stirred better, the rice grains are in a dynamic state and are not prone to adhering to the inner wall, a water and air flowing channel is opened, water can be supported in the later stage of cooking, and the rice cooking effect is improved. Therefore, more moisture can moisten the rice for a longer time, the bonding force between the rice and the pot body is reduced, the probability that the bottom of the pot body is stuck to the pot body is reduced, the rice is more uniform, and the zero-coating non-sticky effect is achieved.

The invention provides a tumor cell exosome, an anti-tumor immune drug delivery system and a preparation method and application of the anti-tumor immune drug delivery system, the tumor cell exosome is derived from starved and stimulated tumor cells, the tumor cell exosome is coated with nano drug particles for delivery, and the exosome has the effects of enhancing immune cell infiltration and remodeling an immune microenvironment; due to the homing effect of the exosome, the medicine and the exosome are more easily accumulated in the tumor, and the targeting property is improved; due to coating and camouflage of the biological membrane of the exosome membrane, the exosome membrane is prevented from being recognized, attacked and removed by an organism, and the biological safety is improved, so that the exosome and the nano-drug act on the tumor together to achieve a synergistic effect.

The invention relates to paclitaxel ganoderma lucidum spore oil self-nanoemulsion composite particles with ganoderma lucidum spores as a carrier and a preparation method of the paclitaxel ganoderma lucidum spore oil self-nanoemulsion composite particles, and belongs to the technical field of medicines. Pretreated Ganoderma lucidum spores (GLS) are obtained through process screening and serve as a drug carrier, and paclitaxel-loaded Ganoderma lucidum spore oil self-nanoemulsion (PGS) is loaded into the Ganoderma lucidum spores (GLS) to obtain paclitaxel-loaded composite particles (PGS (at) GLS). An in-vitro release curve shows that the PGS-atGLS has the characteristic of slow release after reaching the intestinal tract; in-vivo pharmacodynamic experiments show that PGS-atGLS can significantly inhibit development and metastasis of mouse colorectal cancer; tumor tissue slice immunofluorescence analysis shows that PGS-atGLS can effectively play a role in treating colon cancer. The paclitaxel self-nanoemulsion-loaded ganoderma lucidum spore composite particles synergistically promote cancer immune circulation by inducing immunogen cell death and immunoregulation, significantly improve the treatment effect of colon cancer, and have good biological safety.

The invention relates to the technical field of reverse osmosis membranes, in particular to a polyamide reverse osmosis membrane for high-salinity wastewater treatment and a preparation method of the polyamide reverse osmosis membrane. The invention solves the problem that the polyamide reverse osmosis membrane cannot give consideration to both desalination rate and water flux. The polyamide reverse osmosis membrane comprises a polyester non-woven fabric layer, a polysulfone porous layer, a transition layer and a polyamide layer. The polysulfone porous layer is prepared, and the modified pore-forming agent is added to improve the water flux of the reverse osmosis membrane; the hydrophilicity of the reverse osmosis membrane is improved by preparing the transition layer and adding a hydrophilic auxiliary agent when the polyamide layer is prepared; the flux attenuation rate of the polyamide reverse osmosis membrane is reduced by preparing the polyamide layer; the desalination rate of the reverse osmosis membrane is improved by introducing a composite ion complexing agent and graphene quantum dots into the polyamide layer.

The invention provides an electrode plate, a preparation method thereof and a lithium ion battery, and belongs to the technical field of battery materials. The electrode pole piece comprises a current collector and an active layer arranged on the surface of at least one side of the current collector, materials of the active layer comprise an active material, a conductive agent, a fibration binder and a pore forming agent, and the pore forming agent is at least partially dispersed in micropores of the fibration binder; and the pore forming agent comprises LiFSi and / or LiPO2F2. The introduced pore-forming agent can occupy space in the active layer, at least part of the pore-forming agent can enter micropores of the fibration binder, entering of the conductive agent is reduced, more conductive agent makes contact with the active particles, when the electrode plate is wound into a roll core and then injected, the pore-forming agent can be dissolved in electrolyte, micropores are formed in the original positions, and the pore-forming agent can be dissolved in the electrolyte. The porosity of the electrode plate is increased, the infiltration of electrolyte and the transmission of lithium ions are facilitated, and the cycle and fast charge performance of the battery can be improved.

The invention provides lipidosome wrapping L-arginine / Prussian blue nano particles and a preparation method and application thereof, and belongs to the technical field of biological agents. L-arginine is deposited on hPB through iron chelation, then the lipidosome is coated to avoid leakage of water-soluble L-arginine in circulation, and thus the L-arginine / Prussian blue nano particles are obtained. The liposome coated with the L-arginine / Prussian blue nano particles is obtained. Due to the EPR effect, the hPLL-coated Lipo can be efficiently transferred and distributed into tumor tissues, heat is generated under the near-infrared light irradiation condition to ablate a large number of tumor cells, the utilization degree of the tumor cells to L-arginine is greatly limited, meanwhile, immunogenic death is induced, DAMPS is released in situ, infiltration and activation of anti-tumor T cells are further promoted, and the anti-tumor effect is achieved. The tumor immunotherapy is enhanced. And under illumination, the liposome disintegrates and releases the L-arginine, so that nutritional support is provided for immunological competence cells in competitive disadvantage, and activation of an immune microenvironment is promoted.

Belonging to the technical field of thermal insulation material preparation, the invention relates to a corrosion resistant thermal insulation material for marine thermal insulation, which is prepared by the following steps: carrying out acidolysis treatment on plants, then filtering, and pulping the filtered product to obtain a fiber acidolysis solution and a fiber acidolysis product. And then modifying the fiber acidolysis solution and the fiber acidolysis product by using dopamine hydrochloride and a silane coupling agent respectively. The modified cellulose has a good fusion effect in a polyurethane system due to the fact that the modified cellulose contains an amide group, and can be stably adhered to the surface of a metal pipeline for energy transportation in the ocean. Si-O-Si bonds formed by the modified plant fibers can improve the structural stability of the fibers, so that the weather resistance, tensile strength, impact strength and other mechanical properties are improved. The prepared thermal insulation material has the characteristics of good mechanical property and high stability.

The invention relates to a metal surface silane coupling agent treatment method, and also relates to a metal material after surface treatment. Meanwhile, the invention also relates to application of the material in a high-frequency high-speed signal transmission base material. The uniform distribution of the coupling agent layer with the nanometer thickness on the metal surface is realized through the reaction of the non-hydrolytic silane coupling agent and the hydroxyl or oxide on the metal surface. The silane coupling agent is not hydrolyzed before reacting with the metal surface, and the number of unreacted silicon hydroxyl groups in the coupling agent layer is very small, so that in the subsequent composite material preparation and application process, the situation that the interface dielectric constant is increased due to a small amount of water molecules formed by condensation of the coupling agent on the metal surface can be avoided; therefore, high-speed transmission of high-frequency signals is interfered, and water molecules induce anodic oxidation wires to cause circuit board failure and other hidden dangers. Compared with traditional metal subjected to surface treatment through a hydrolyzed silane coupling agent, the interface bonding strength between the metal with the silane coupling agent layer with the nanoscale thickness and organic resin is greatly improved.

The invention provides a preparation method of an electrode with a polymer solid electrolyte and a lithium battery, and the preparation method comprises the following steps: S1, adding an adhesive and a conductive agent into an electrode material, dissolving in N-methyl pyrrolidone, and mixing and stirring to form slurry; and S2, coating a current collector with the slurry to form a pole piece. And S3, drying the coated pole piece, then rolling the pole piece, and recording the pole piece as a marked pole piece. S4, adding a lithium salt into the polymer to form a first solution; uniformly stirring and mixing the first solution, and adding an initiator to obtain a precursor solution; and S5, adding a surfactant into the precursor solution to form an active precursor solution. And S6, dropwise adding the active precursor solution on the marked electrode plate, and carrying out high-temperature standing operation on the marked electrode plate for 5-300min in a temperature range of 30-100 DEG C to obtain the electrode with the polymer solid electrolyte.

The invention provides solvent-free nonionic waterborne polyurethane resin as well as a preparation method and application thereof. The solvent-free nonionic waterborne polyurethane resin is prepared from the following raw materials: polymer polyol, diisocyanate, nonionic hydrophilic polyol, an emulsifier, an amine chain extender and an amino silane coupling agent, non-ionic hydrophilic polyol is adopted as an internal hydrophilic chain extender, and an emulsifier is added for synergistic emulsification, so that the water resistance of the obtained waterborne polyurethane resin is effectively improved, the water swelling property of the waterborne polyurethane resin is reduced, the jungle stability of the waterborne polyurethane resin is improved, and the waterborne polyurethane resin has the characteristics that the solid content is relatively high, and acetone does not need to be removed; the water resistance and alkali resistance of the obtained waterborne polyurethane resin are further improved by further introducing an amine chain extender and an amino silane coupling agent, so that the waterborne polyurethane resin is applied to the field of waterborne microfiber leather, and the prepared waterborne microfiber leather is good in hand feeling, fine in crease, good in resilience and qualified in jungle test.

The invention provides a genetically engineered bacterial exosome vesicle and application thereof in preparation of a medicine for treating tumors, and comprises a genetically engineered bacterial exosome vesicle Neo-MICBOMVs, and the surface of the genetically engineered bacterial exosome vesicle Neo-MICBOMVs is loaded with a fusion protein composed of a tumor neoantigen protein and an MICB [alpha] 3 structural domain protein. The fusion protein can be used as a vaccine pharmaceutical composition for treating tumors, can be used as a targeting antigen presenting cell, can promote activation of an immune system, can increase immune infiltration in a tumor microenvironment, can inhibit immune escape of tumor cells, and can improve the effect of tumor immunotherapy.

The invention discloses a covalent lysosome targeting chimera based on a nucleic acid aptamer and application of the covalent lysosome targeting chimera in protein degradation and immunotherapy, and belongs to the technical field of biology. The invention designs a covalent lysosome targeting chimera with click chemical reaction activity, and the simple and efficient covalent lysosome targeting chimera is used for realizing efficient protein degradation at the levels of cells and living bodies. When the tool is used for targeted degradation of immunotherapy biomarkers, immunogenic apoptosis of tumor cells can be caused, so that killing of an immune system to tumors is more efficiently activated. Meanwhile, the covalent lysosome targeting chimera overcomes the problem of immune-related side effects confronted by existing antibodies and polysaccharide peptide drugs, and can effectively avoid the potential occurrence risk of the immune-related side effects while efficiently degrading the target protein.

The invention provides an aluminum-based composite material reinforced by nickel-coated silicon carbide through a magnetron sputtering dry method and a preparation process of the aluminum-based composite material, and relates to the technical field of metal-based composite materials and advanced electronic packaging thermal management materials. Comprising the following steps that S1, silicon carbide particles coated with nickel through a magnetron sputtering dry method and aluminum powder are put into a mold to be subjected to compression molding, and an initial blank is obtained; and S2, the initial blank prepared in the step S1 is placed in a re-pressing sintering furnace under the inert gas protection condition, continuous re-pressing is conducted under the temperature condition ranging from the temperature lower than the aluminum melting point by 50 DEG C to the temperature higher than the aluminum melting point by 200 DEG C, and the nickel-coated silicon carbide reinforced aluminum-based composite material obtained through the magnetron sputtering dry method is obtained. The aluminum-based composite material reinforced by magnetron sputtering dry nickel-coated silicon carbide disclosed by the invention is excellent in heat-conducting property and mechanical property and long in service life.

The invention discloses a negative plate, a lithium ion battery and electric equipment. The negative plate comprises the negative plate, the lithium ion battery and the electric equipment. The negative plate comprises a negative current collector and a negative active material layer located on at least one side of the negative current collector, the negative active material layer comprises a negative active material, and the negative active material comprises a graphite material, a hard carbon material and a silicon-based material; the particle size D50 of the graphite material, the particle size D '50 of the hard carbon material and the particle size D' '50 of the silicon-based material meet the conditions that 1.5 < = D50 / D' 50 < = 2.5 and 1.1 < = D '50 / D' '50 < = 3. According to the scheme, through the matching of the sizes and the particle sizes of the graphite, the hard carbon and the silicon-based material, the short plate of low compaction density of the hard carbon is effectively improved, the overall compaction density of the negative pole piece is improved, the energy density of the battery is favorably improved, the infiltration of electrolyte is facilitated, the liquid retention of the pole piece is improved, the rapid embedding of lithium ions is also facilitated, and the rate capability is improved.

The invention relates to the technical field of battery diaphragms, in particular to a battery diaphragm, a preparation method thereof and a battery. The battery diaphragm comprises a base material and a coating on the surface of the base material, wherein the coating comprises a temperature-responsive component; wherein the temperature-responsive component comprises one or more of poly (N-alkyl acrylamide), poly (N-alkyl acrylate), poly (low polyethylene glycol) acrylate, polyvinyl ether and natural macromolecules. According to the invention, the continuous or discontinuous temperature-responsive coating is arranged to form the electrolyte storage bank, so that the stored electrolyte can be released under the action of temperature, the distance through which the electrolyte infiltrates is greatly shortened, the area near the coating material is rapidly infiltrated, the infiltrating of the roll core is accelerated, and a better infiltrating effect is realized.

The invention belongs to the field of down, and particularly relates to a waterproof down manufacturing method which comprises the following steps: sequentially immersing down filaments into an oxalic acid solution and a mixed solution of oligomerized maleic acid and sodium hypophosphite, and then crosslinking to obtain crosslinked down filaments; and carrying out surface hydrophobic modification on the cross-linked down silk to obtain the waterproof down feather. According to the method disclosed by the invention, the down filaments with poor heat retention property are subjected to cross-linking polymerization, and the obtained down is high in filling power and strong in hydrophobicity and has a great practical prospect.

The invention relates to the technical field of biology, in particular to a drug delivery nano-vesicle based on an autoactivated T cell membrane as well as a preparation method and an application of the drug delivery nano-vesicle. The drug delivery nano-vesicle comprises a cationic lipid type nano-particle, diaminobenzimidazole embedded in the cationic lipid type nano-particle, and a primary activated T cell membrane positioned on the outer surface of the cationic lipid type nano-particle. In the invention, the STING agonist diaminobenzimidazole (diABZI) is used for activating congenital and adaptive immune response, enhancing expression and secretion of IFN-beta by tumor cells and DC cells, inducing DC maturation and promoting T cells to infiltrate tumor; the activated T cell membrane simultaneously expressing multiple immune checkpoints competitively relieves the inhibition effect of multiple immune checkpoints, enhances the tumor killing ability of T cells, and realizes the synergistic anti-tumor curative effect.

The invention belongs to the technical field of inorganic powder, and discloses polymer-coated modified heavy calcium carbonate composite particles as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and stirring heavy calcium carbonate and a mixed solution of NaOH and Na2CO3, and carrying out suction filtration, washing and drying; adding KH-570 hydrolysate into the obtained surface hydroxylated ground calcium carbonate, continuously stirring in an oil bath pan, carrying out reflux condensation reaction for 3 hours, carrying out suction filtration, and drying to obtain KH570-OH-GCC; sequentially adding lauryl sodium sulfate, deionized water and KH570-OH-GCC, and adding an initiator for reaction; dropwise adding a mixed solution of butyl acrylate and ethylene glycol dimethacrylate, and reacting for 2 hours after dropwise adding; and adding an emulsifier, continuously stirring, dropwise adding a mixed solution of methyl methacrylate and allyl methacrylate, reacting for 2.5 hours after dropwise adding, cooling, carrying out suction filtration, and drying to obtain the polymer-coated modified heavy calcium carbonate composite particles.

The invention provides a cylindrical secondary battery and an electronic device, the cylindrical secondary battery comprises an electrode assembly, the electrode assembly comprises a positive electrode piece, a negative electrode piece and a diaphragm, and the negative electrode piece comprises a negative electrode current collector, a first negative electrode material layer and a second negative electrode material layer. The positive pole piece comprises a positive current collector and a first positive material layer. The unit area capacity of the first negative electrode material layer is C1mAh / 1540.25 mm < 2 >, the unit area capacity of the second negative electrode material layer is C2mAh / 1540.25 mm < 2 >, and the ratio of C1 to C2 is A. In the winding direction of the electrode assembly, the length of the first circle of first positive electrode material layer in the electrode assembly is L1 mm, the length of the first circle of first negative electrode material layer in the electrode assembly is L2 mm, the ratio of L1 to L2 is B, 1.001 < = A < = 1.1, and 0.918 < = A / B < = 1.048. Through the arrangement, the improvement of the cycle performance of the cylindrical secondary battery is facilitated.

The invention provides a capacity grading method for a high-capacity battery, and the method comprises the steps: carrying out the constant-current discharge of a fully charged battery to a first discharge cut-off voltage according to a first preset current rate at a preset environment temperature, standing for a first preset time length, and enabling the first preset current rate to be smaller than or equal to the maximum continuous charging current of the battery; and performing constant-current discharge on the battery according to a second preset current rate to a second discharge cut-off voltage, standing for a second preset duration, the second preset current rate being less than or equal to the maximum continuous charging current of the battery, and the second discharge cut-off voltage being less than the first discharge cut-off voltage, so that the battery is discharged more fully, the polarization influence is reduced, and the battery quality is improved. The battery capacity obtained through capacity grading is more accurate, the battery state can be better distinguished, more microcosmic lithium is removed from the negative electrode of the battery, a part of lithium difficult to remove under high voltage can be removed, the lithium precipitation problem of the battery can be improved, the cycle life of the battery is prolonged, and the safety of the battery is improved.

The invention relates to a non-irritant, lifting and tightening mask cloth as well as a preparation method and application thereof. The mask cloth comprises a cellulosic fiber surface layer, an elastic middle layer and a cellulosic fiber bottom layer which are sequentially laminated, the cellulose fiber surface layer and the cellulose fiber bottom layer are both made of fine denier viscose fibers, the fineness of the fine denier viscose fibers is 0.5 dtex-1. 0 dtex, and the length of the fine denier viscose fibers is 38-52 mm; the elastic middle layer is made of PU fibers. The PU fiber is used as the elastic middle layer, the cellulose fiber layers are used on the two sides, the middle layer has good elasticity, after the middle layer is made into the membrane cloth, good elasticity can be provided, the cellulose fiber layers can make the fiber very soft by controlling the fineness, and the prepared membrane cloth is very fine and soft in surface and can provide good skin feeling; the cellulose fiber layer is attached to the skin, so that the finally obtained mask cloth is very friendly to the skin, has no irritation, and is safer and milder.

The invention relates to a preparation method of a tumor microenvironment response type nano drug delivery system, which comprises the following steps: forming MnO2 nanoclusters through biomineralization induction under an alkaline condition, modifying HSA nanoparticles, then loading Ce6 through a carbodiimide method, and finally combining with a PD-L1 antibody by adopting a copper-free click chemistry method to obtain nanoparticles HMC and anti-PD-L1. The nanoparticle can be retained in a tumor tissue in a passive targeting manner through an EPR effect, and is decomposed into Mn < 2 + >, O2 and a small molecule drug through a high H2O2 and low pH microenvironment of the tumor tissue, so that the tumor permeability is greatly enhanced, the tumor immunogenicity is enhanced by combining sonodynamic therapy, the release of a tumor specific antigen and the aging of antigen presenting cells are promoted, and the tumor treatment effect is enhanced. The infiltration of tumor T cells is increased, and cold tumors are changed into hot tumors; the nanoparticles can generate O2 in situ at the same time, and the immunosuppressive ability and drug resistance caused by tumor hypoxia are overcome.

The invention relates to the technical field of automobile part structures, in particular to a planet row speed reducer lubricating structure for coaxial distributed driving. Comprising a shell, an input shaft, a gear ring, a plurality of planetary gears, a plurality of planetary shafts, a planetary carrier and an oil receiving disc. The gear ring is of an annular structure fixed to the shell. The planetary gears are arranged at intervals in the circumferential direction of the input shaft with the axis of the input shaft as the center, and the planetary gears are meshed with the input shaft and the gear ring; one end of the planetary shaft penetrates through the planetary gear; the planet carrier is sleeved on the input shaft in a manner of rotating around the axis of the input shaft, the planet carrier is fixedly connected with the other end of the planet shaft in the direction of rotating around the axis of the input shaft, and the oil receiving disc is fixed on one axial side of the planet carrier; and the oil liquid sprayed out of the oil liquid channel of the shell is uniformly distributed to the planet carrier, the planet gear, the planet shaft and the first bearing structure in the axial direction. The speed reducer is simple in structure, a special electronic pump does not need to be configured, the energy effect is greatly reduced, and the problem that the NVH effect is poor is solved.

The invention belongs to the technical field of electrochemistry, and discloses a pi-d conjugated covalent organic framework material, and a preparation method thereof comprises the following steps: adding 2, 5-hydroxyterephthalic acid, 2, 3, 5, 6-tetra (amino) p-benzoquinone and nickel acetate tetrahydrate into a container, then adding N-methyl pyrrolidone, carrying out ultrasonic treatment for 0.5 h, transferring into a hydrothermal reaction kettle, carrying out a sealed reaction for 2-5 days, and carrying out vacuum drying to obtain the pi-d conjugated covalent organic framework material. And after the reaction is finished, naturally cooling to room temperature, filtering, collecting, washing and performing vacuum drying on the obtained precipitate to obtain the pi-d conjugated covalent organic framework material. The covalent organic framework material disclosed by the invention is rich in N / O chemical adsorption sites and Ni < 2 + > catalytic sites, so that shuttling of polysulfide can be effectively inhibited; on the other hand, catalytic conversion of polysulfide is promoted, the reaction kinetics of the lithium-sulfur battery is further accelerated, and compared with a traditional covalent organic framework, the conductivity is greatly improved, and the electron transmission capacity is improved.

The utility model discloses a device for testing the corrosion resistance of a reinforcing steel bar. The device comprises a test bed, a control panel is fixedly mounted on the front surface of the test bed, a plurality of environment simulation mechanisms are mounted at the top of the test bed, clamping mechanisms are mounted in the environment simulation mechanisms, and a stress loading mechanism is arranged on one side of each environment simulation mechanism; the clamping mechanism comprises a clamping body, the inner wall of the clamping body is connected with a limiting piece and a bottom supporting plate, the limiting piece and the bottom supporting plate are sleeved with a limiting plate, and the limiting piece is in threaded connection with a first lead screw. The device has the advantage of simulating actual working conditions, and solves the problems that stress is inconvenient to apply to the detected reinforcing steel bar, the corrosion effect of the reinforcing steel bar under the actual use condition is difficult to reflect and accurate evaluation of the corrosion resistance of the reinforcing steel bar is hindered in the use process of the existing device for testing the corrosion resistance of the reinforcing steel bar.