17results about How to "Morphological rules" patented technology

The invention discloses a method for preparing microcapsules from beta-cyclodextrin inclusion compound microcrystal stabilized sandalwood essential oil, and belongs to the technical field of microcapsule preparation. The method comprises the following steps: preparing sandalwood essential oil / beta-cyclodextrin inclusion compound microcrystals, emulsifying and dispersing the sandalwood essential oil by using the inclusion compound microcrystals as an emulsifier, adding resin, and carrying out a condensation reaction to prepare the microcapsule suspension. According to the preparation method, firstly, beta-cyclodextrin and essential oil are embedded to obtain clathrate microcrystals, then the clathrate microcrystals serve as an emulsifying agent, the emulsifying effect of the essential oil is improved, resin microcapsules are convenient to prepare, and the microcapsules prepared through the method are high in essential oil embedding rate and good in stability; beta-cyclodextrin inclusion compound microcrystals are selected as a Pickering emulsion stabilizer, so that the emulsifying and stabilizing effects are good, and the microcapsule emulsion is not layered.

The invention relates to the field of batteries, in particular to a preparation method and application of an iron-cobalt sulfide / nitrogen-doped carbon composite material based on a spray drying method. The method comprises the following steps: mixing a 2-methylimidazole solution and a cobalt salt solution, performing spray drying to obtain purple precursor powder, performing recrystallization and iron ion exchange to obtain Fe / ZIF-67, and finally forming the ZIF-67 skeleton derived iron-cobalt sulfide / nitrogen-doped carbon composite material by a gas-phase vulcanization method. The Fe / ZIF-67 provided by the invention has a nanoscale size and high structural stability. When the iron-cobalt sulfide / nitrogen-doped carbon composite material is used as a sodium-ion battery negative electrode material, a built-in electric field constructed by an iron-cobalt sulfide heterostructure can remarkably improve ion diffusion kinetics; meanwhile, the nitrogen-doped carbon matrix can effectively relieve the volume change of the iron-cobalt sulfide heterojunction in the electrochemical reaction process while improving the conductivity of the composite material, so that the nitrogen-doped carbon matrix shows excellent and stable sodium storage performance.

The invention discloses a regular ZSM-5 molecular sieve as well as a synthesis method and application thereof, and belongs to the technical field of catalysts and synthesis thereof. The method comprises the following steps: mixing a ZSM-5 molecular sieve with alkali liquor, reacting at 25-200 DEG C for 2-6 hours, and centrifuging to obtain ZSM-5 secondary structure alkali liquor; adding the aluminum source acid solution into the silicon source alkali solution to obtain gel, and pulping to obtain slurry; adding ZSM-5 secondary structure alkali liquor into the slurry, mixing, transferring into a hydrothermal reaction kettle, carrying out dynamic or static crystallization, and washing, drying and roasting after crystallization to obtain the regular ZSM-5 molecular sieve. According to the present invention, the conditions are mild during the ZSM-5 secondary structure preparation, the used alkali solution can be further applied to the ZSM-5 molecular sieve synthesis gel system, the alkali solution can be maximally utilized, the ZSM-5 secondary structure is complete, the ZSM-5 crystallization nucleation guiding ability is strong, and the secondary structure can increase the openness of the pore structure and broaden the use range.

The invention relates to the technical field of conveying belts, and particularly discloses a halogen-free rubber conveying belt sizing material and a preparation method thereof. The invention relates to a halogen-free rubber conveyer belt rubber material, which comprises the following raw materials by weight: 15-25 parts of natural rubber; 45-55 parts of styrene butadiene rubber; 25-35 parts of butadiene rubber; 50 to 100 parts of a halogen-free flame retardant; 50 to 80 parts of filler; 2-5 parts of a vulcanizing agent; 5-15 parts of an auxiliary agent; the halogen-free flame retardant comprises ammonium polyphosphate, magnesium hydroxide, zinc borate, melamine phosphate, a flame retardant MB202 and diphenyl isooctyl phosphate. The preparation method comprises the following steps: S1, preparing raw materials; and S2, preparing the rubber material. The halogen-free rubber conveying belt rubber material can be used for conveying conveying belts of materials in the fields of coal, mines, metallurgy, chemical engineering and the like, and has the advantages of high temperature resistance, high mechanical property, long service life and the like.

The invention discloses battery-grade lithium carbonate as well as a preparation method and application thereof, and the preparation method comprises the following steps: synchronously introducing a lithium-containing solution and carbon dioxide bubble water into a reaction device, and reacting to obtain lithium carbonate; the carbon dioxide bubble water is prepared by adopting the following method: simultaneously introducing carbon dioxide and water into a shear pump, and shearing and mixing to prepare the carbon dioxide bubble water. According to the method, the traditional gas-liquid reaction that carbon dioxide is directly introduced into the lithium-containing solution is creatively transformed into a gas-liquid-liquid reaction system that carbon dioxide bubble water prepared in advance and the lithium-containing solution are synchronously introduced, so that the product purity and stability are remarkably improved, and the bottleneck of a traditional intermittent process is broken through; the preparation method is simple, the production capacity and efficiency are remarkably improved, industrial large-scale production is easy to realize, and the obtained product lithium carbonate crystal is complete in growth, concentrated and controllable in particle size distribution and regular in morphology, and meets the processing requirements of high-end battery materials.

The invention discloses a preparation method of calcite with different calcium-magnesium ratios, which comprises the following steps of: storing dextran sodium sulfate in a refrigerator, and taking out the dextran sodium sulfate when in use; the method comprises the following steps: adding sodium polyacrylate and dextran sodium sulfate into a centrifuge tube, adding a MgCl2 solution and a CaCl2 solution, mixing, adding a Na2CO3 solution, immediately carrying out a precipitation reaction, completely precipitating all calcium and magnesium ions, and adding reagents in different proportions; after full reaction, immediately carrying out solid-liquid separation by using a centrifugal machine; after reaction liquid is separated, filtering by using a vacuum pump, washing filter residues with deionized water and alcohol for 2-3 times, and drying at room temperature; mixing the prepared calcite powder with deionized water according to the ratio of 0.2 g / 1L, introducing CO2 gas for 6-8 days to ensure that the calcite powder is balanced, and then taking supernate, namely a calcite saturated solution. The invention aims to flexibly prepare calcite solutions with different calcium-magnesium ratios so as to meet diversified application requirements and show extremely high utilization potential and value.

This invention discloses an in-situ surface-coated LiF-coated water-resistant 4.7V lithium cobalt oxide cathode material, its preparation method, and its applications. The chemical formula of the cathode material of this invention is Li. 1‑2x‑2y Co 1‑ z Mg x Ni y Al z O2@LiF, where 0≤x≤0.05, 0≤y≤0.05, 0≤z≤0.05, and x, y, and z cannot all be 0; LiF is Li 1‑2x‑2y Co 1‑z Mg x Ni y Al z O2 material coating layer. This invention mixes lithium metal salts, cobalt compounds, and an F-containing dopant to obtain a mixture; the mixture is sintered once at a high temperature, then cooled and ground uniformly, followed by a second sintering and cooling to obtain the in-situ surface-coated water-resistant 4.7V lithium cobalt oxide material. This invention constructs a complete, continuous, and uniformly distributed hydrophobic protective layer on the surface of lithium cobalt oxide particles through in-situ coating technology, effectively blocking the corrosion of the material by electrolyte and moisture; the simultaneously formed elemental doping enhances the metal-oxygen bond binding energy, synergistically improving the bulk structural stability and jointly ensuring the long cycle life of the electrode material.

The invention relates to ZnO particles with different morphologies and a preparation method thereof. According to the invention, a simple direct precipitation method is adopted, the ZnO particles with controllable morphology can be obtained by adjusting the reaction time, temperature and pH value, and the preparation method is simple, easy to operate, green and environment-friendly. The synthesized ZnO particles are uniform in dispersion, uniform in particle size and regular in morphology, and start from the center, a plurality of one-dimensional hexagonal cones are finally stacked and self-assembled to form a 3D polygonal flower-shaped structure. Wherein along with the increase of the reaction pH, the morphology of the obtained ZnO particles is evolved into a transition state of particles with rough surfaces from a flower shape, and then the lamellar flower-shaped morphology with regular morphology is generated.

The invention discloses a PVP / UiO-66 composite carbonized material, a preparation method and application of the PVP / UiO-66 composite carbonized material as an MALDI (matrix-assisted laser desorption ionization) matrix in small molecule substance detection. The preparation method comprises the following steps: by taking terephthalic acid (H2BDC) and zirconium tetrachloride (ZrCl4) as raw materials, adding polyvinylpyrrolidone (PVP) in the process of synthesizing UiO-66, and then performing high-temperature carbonization on the UiO-66 doped with the PVP, thereby obtaining the PVP / UiO-66 composite carbonized material. The carbonized C-H-PVP-U66-600 material shows excellent desorption ionization performance, and the demand threshold value of laser energy is reduced, so that the damage to an analytical instrument and molecules to be detected is reduced. Meanwhile, the composite carbonized material has a cleaner background peak, the detection sensitivity of small molecule analytes is effectively improved, and the types of detectable analytes are expanded.

The present invention discloses a method and application for preparing silicon carbide material using silicon slag as raw material, and belongs to the field of silicon carbide preparation. The specific preparation method is as follows: the silicon slag is crushed and wet-ground, and the wet-ground material is added into a flotation tank for flotation to obtain a flotation concentrate, and then the flotation concentrate is acid-leached and then graphite is added for ultrasonic treatment, and constant temperature drying is performed for rapid Joule thermal shock, and the powder produced after the thermal shock is ultrasonically treated, and filtered and dried to obtain silicon carbide powder. The present invention is applied to the preparation of silicon carbide, and belongs to a rapid Joule thermal shock synthetic material process, which provides a feasible development direction for the industrial production of silicon carbide powder prepared by recycling silicon slag, and the operation process of the present invention is simple, the process cost is low, and it is pollution-free to the environment.

The invention discloses a preparation method of conductive paste for a solar cell, and relates to the technical field of solar cell preparation. The preparation method comprises the following steps: adding a copper source, a surfactant, a dispersant and a brightness modifier into a solvent to obtain a first mixed solution; adding a reducing agent and a chelating agent into a solvent to obtain a second mixed solution; the first mixed solution and the second mixed solution are mixed according to the preset volume ratio, a third mixed solution is obtained, and seed copper powder with the preset mass fraction is added into the third mixed solution; the third mixed solution after the reaction is sequentially subjected to sedimentation cooling treatment, centrifugal treatment, drying treatment and grinding treatment, micron-sized copper powder is prepared, a conductive silver layer is deposited on the surface of the micron-sized copper powder through chemical reduction reaction, silver-coated copper powder is prepared, and the conductive paste is prepared through the silver-coated copper powder. The micron-sized copper powder prepared through the method can meet the high target size interval yield, the preparation cost is low, and the process compatibility is high.

The utility model provides a kind of PE cloth leftover material recycling and smashing device, it is related to cloth production technical field, including diversion bin, the upper end of the diversion bin is fixedly connected with pre-extrusion assembly, the pre-extrusion assembly includes the extrusion bin fixedly connected in the upper end of diversion bin, the inside of the extrusion bin is rotatably connected with extrusion roller, the lower end of the diversion bin is welded with smashing bin, the front side surface of the smashing bin is equipped with chute, the below of the chute is provided with fixed plate, the surface of the fixed plate is installed with slide;By setting pre-extrusion assembly, by driving motor, sleeve wheel, belt drive two parallel extrusion roller rotation, can be flattened and exhaust treatment to PE cloth leftover material, effectively reduce material volume, avoid "aerial" or "stuck" when smashing, improve subsequent smashing efficiency, reduce energy consumption, material form can also be more regular, reduce the jamming situation of diversion bin and smashing bin entrance, ensure that equipment continuous stable operation.

This invention discloses a BN@EVA composite pour point depressant and its preparation method, belonging to the petrochemical field. The invention improves the compatibility of nano-hexagonal boron nitride (BN) with ethylene-vinyl acetate copolymer (EVA) by hydroxylation and amination, and then uses a solvent blending method to composite BN-NH2 and EVA in xylene to prepare the BN@EVA pour point depressant. The mass fraction of BN in the composite pour point depressant is 1-3 wt%, with an optimal value of 2 wt%. When the addition amount is 500 mg / kg, the pour point of crude oil can be significantly reduced from 19℃ to -7℃, a reduction of 26℃. FT-IR and SEM characterization confirmed that BN was successfully modified and uniformly dispersed in the EVA matrix; DSC curves showed a decrease in crystallization temperature and a bimodal synergistic effect; microscopic observation showed that the wax crystal morphology changed from a dense network to a dispersed spherical shape, effectively improving low-temperature fluidity. This invention has the advantages of good pour point depressant effect, simple process, and low cost, and is suitable for the extraction and pipeline transportation of high-wax crude oil.

The invention discloses a degreased black rice embryo preparation process based on a density flotation method, and belongs to the technical field of rice deep processing. The preparation process comprises the following steps: (1) shelling; (2) rice milling; (3) degreasing; (4) density flotation; (5) sample recovery; and (6) drying. According to the method, a low-polarity lipophilic solvent with proper density is used for treating a black rice bran embryo mixture, degreasing, bran embryo separation and anthocyanin retention are synchronously realized, and the degreased black rice embryo is prepared. The process is simple in step, good in bran and embryo separation effect, high in rice embryo yield and product comprehensive recovery rate, recyclable in solvent, capable of effectively retaining anthocyanin and enriching micronutrient elements such as gamma-aminobutyric acid and suitable for large-scale popularization; the obtained product is regular in morphology, good in stability (low in fat content and lipase activity and not prone to rancidification) and high in nutritional value (rich in polyphenol, anthocyanin, gamma-aminobutyric acid and the like). The method disclosed by the invention is of great significance in promoting deep processing and high-value utilization of the black rice.

The invention discloses a micro-nano hydrogen bond organic framework and a preparation method and application thereof, and belongs to the technical field of micro-nano material preparation. The preparation method of the micro-nano hydrogen bond organic framework comprises the following steps: uniformly mixing an organic ligand and a solvent, and reacting to obtain the micro-nano hydrogen bond organic framework, the organic ligand is a porphyrin or phthalocyanine compound. The preparation method of the micro-nano hydrogen bond organic framework provided by the invention is simple to operate, and the micro-nano hydrogen bond organic framework which is highly crystallized, regular in morphology and uniform in size can be obtained and can be used as an anti-cancer drug carrier, so that the utilization rate of a drug in a living body can be improved.

The application provides a cysteine grafted polyurethane, comprising a polyurethane backbone and cysteine grafted on the polyurethane backbone. The application also provides a preparation method of the cysteine grafted polyurethane, and a cysteine grafted polyurethane nanoparticle and a preparation method thereof. The cysteine grafted polyurethane and the nanoparticle thereof provided by the application can be used for non-surgical treatment of congenital subluxation of the lens, repair of the zonular ligament to reduce the degree of lens dislocation, long-term and local immune microenvironment remodeling through inherent biological activity of the material itself, inhibition of M1 macrophage polarization from the source of the pathological loop, inhibition of the NF-κB pathway and reduction of degradation of the ECM core structure protein (such as FBN1 and MFAP2) of the zonular ligament of the lens, thereby promoting the repair of the zonular ligament, and avoiding or reducing the risk related to surgery.

This invention relates to the field of nanomaterial synthesis, and particularly to an ultrafine MoO2 nanowire bundle exhibiting surface-enhanced Raman (SEPA) effect, its preparation method, and its applications. The preparation method includes the following steps: 1) A sol-gel reaction is carried out using P123, water, n-butanol, concentrated hydrochloric acid, and TEOS as raw materials. The reaction product is then heated and aged, followed by washing, filtration, drying, and calcination to obtain a hexagonal porous template. The aging temperature is 60–140°C. 2) Ammonium molybdate is dissolved in water and mixed with the template obtained in step 1). After stirring and standing, the mixture is dried for the first time, calcined under a hydrogen-containing inert atmosphere, and then the template is removed with hydrofluoric acid. After washing and a second drying, the final product is obtained. The ultrafine MoO2 nanowire bundle has a diameter of approximately 5 nm, a regular and controllable morphology, good repeatability and stability, and exhibits a strong localized surface plasmon resonance effect and outstanding SEPA effect.