23results about How to "Good nature" patented technology

The invention discloses a magnetic control silicon-based adhesive as well as a preparation method and application thereof. The magnetic control silicon-based adhesive is prepared from the following components in parts by weight: 60 to 70 parts of silane modified polyurethane, 15 to 25 parts of a silane coupling agent, 40 to 60 parts of a magnetic nano material, 15 to 45 parts of microcrystalline silicon, 25 to 40 parts of nano calcium carbonate, 5 to 15 parts of titanium dioxide, 5 to 10 parts of talcum powder, 10 to 15 parts of amino silane, 3 to 8 parts of color paste and 1 to 4 parts of a catalyst. The silane modified polyurethane, the magnetic nano material and the microcrystalline silicon are reasonably compounded, so that the obtained adhesive not only has good adhesive force, but also has excellent water resistance and aging resistance, the introduction of the magnetic nano material not only can be matched with electromagnetic equipment to realize remote repair, but also can improve the curing capacity of the adhesive, so that the adhesive has a good application prospect. And the microcrystalline silicon enables the chemical properties of the adhesive to be more stable, and can meet the building repair requirements in various complex environments.

The invention discloses a polyamide-based thiourea compound and a preparation method and application thereof. The invention comprises the following steps: mixing an isonitrile compound and a diamine compound, adding an organic solvent, dissolving and then adding carbon disulfide, stirring for the first time; then adding a dihydrazide compound, stirring for the second time to carry out a polymerization reaction, and obtaining the linear polyamide-based thiourea compound; mixing an isonitrile compound and a triamine compound, adding an organic solvent, dissolving and then adding carbon disulfide, stirring for the first time; then adding a dihydrazide compound, stirring for the second time to carry out a polymerization reaction, and obtaining the hyperbranched / cross-linked polyamide-based thiourea compound. The reaction operation of the invention is simple, can be carried out under the conditions of room temperature and air, has a high yield, and does not produce toxic and harmful byproducts; the obtained series of polyamide-based thioureas have better mechanical properties than ordinary polythioureas.

The present invention provides a method for depolymerizing lignin, depolymerization products and applications, and relates to the field of green utilization of agricultural and forestry waste resources. The present invention adopts a new dual-functional solvent system with the ability to dissolve and degrade lignin, and realizes controllable and efficient depolymerization of industrial lignin. Under suitable depolymerization parameters, industrial lignin raw materials with a molecular weight of 10,000 to 200,000 and a molecular weight distribution of 2 to 5 can be degraded into oligomers with a molecular weight of 400 to 1200 and a molecular weight distribution of 1.2 to 2.0, the yield of the oligomers is 80 to 96%, and the hydroxyl value of the oligomers is 400 to 700 mgKOH / g. The comprehensive performance of the bio-based rigid foam polyurethane prepared from the raw materials is significantly better than that of similar petroleum-based products, and has excellent degradability and cost advantages.

The invention relates to the technical field of solar photovoltaics, in particular to a monocrystalline silicon multi-section rod adhesive as well as a preparation method and application thereof. The monocrystalline silicon multi-section rod adhesive provided by the invention is prepared from the following components in parts by weight: 100 parts of a curing agent, 20 to 30 parts of an alkaline activator, 0.5 to 2 parts of nano filler, 2 to 4.5 parts of a retarder, 3 to 6 parts of a water reducing agent and 5 to 10 parts of water, wherein the curing agent comprises an amorphous silicon-aluminum compound. The monocrystalline silicon multi-section rod adhesive disclosed by the invention can be used for effectively adhering monocrystalline silicon base materials together, the hardness of the adhesive after curing is close to that of silicon, and the adhesive has excellent temperature resistance; when the monocrystalline silicon multi-section rod adhesive is used for cutting a monocrystalline silicon multi-section rod obtained by splicing monocrystalline silicon base materials, the manual dependence degree can be reduced, the cutting efficiency is improved, the utilization rate of raw materials is greatly improved, and the quality of a silicon wafer obtained by cutting is improved.

The invention provides a mesalazine soft material, mesalazine tablets and a preparation method thereof. The preparation method of the soft material comprises the following steps: providing the active component, wherein the bulk density of the active component is 0.27-0.35 g / mL; dry-mixing the active component with povidone, sodium carboxymethyl starch and hydroxypropyl methylcellulose to obtain a basic granulation dry material; adding water into the basic granulation dry material, stirring and shearing to obtain a soft material; wherein the active component is mesalazine or a pharmaceutically acceptable salt thereof; the weight of the water is 38-42% of the weight of the basic granulation dry material; the rotating speed of a stirring paddle used for stirring and shearing is 80-120rpm; the rotating speed of the cutter is 900 to 1500 rpm (revolutions per minute); the stirring and shearing time is 5-7 minutes. According to the preparation method of the soft material, the end point of wet granulation can be clearly and easily achieved, the soft material with excellent properties is obtained, and a good foundation is laid for subsequent production processes and detection release of products.

The application provides a two-dimensional SnO nanosheet preparation method based on a water-assisted crystallization synthesis regulation strategy. The core of the strategy is to introduce a specific crystal face inducing agent as a surface regulation medium, and through deep optimization of the crystallization process parameters, the thickness of the nanosheet is accurately measured and the highly crystalline state is directionally synthesized. Compared with the traditional solid phase or hydrothermal synthesis scheme, the process avoids the extreme reaction environment of high temperature and high pressure, significantly reduces the energy consumption and preparation cost, and effectively solves the stability bottleneck of batch production of materials. The SnO nanosheet prepared by the process has excellent p-type semiconductor electrical properties and high specific surface area advantages, and provides potential key material support for the industrial application of high-performance transparent thin film transistors, optoelectronic devices, gas sensitive sensors and new type of electrical contact materials.

Embodiments of the present disclosure provide a method of predicting an extreme ultraviolet dose, a method of designing a photoacid generator, and a method of manufacturing a semiconductor device. In the method for predicting the extreme ultraviolet dose, the whole photochemical reaction mechanism of photoacid generator molecules from photoacid generator cations to release protons under extreme ultraviolet exposure can be analyzed. The lowest unoccupied molecular orbital energy level can be obtained by performing a simulation for structural optimization of photoacid generator cations. Additional parameters different from the lowest unoccupied molecular orbital level may be obtained by performing a simulation for structural optimization of at least one intermediate molecular structure formed by the entire photochemical reaction mechanism. A two-parameter linear regression model for predicting the extreme ultraviolet dose may be obtained based on the lowest unoccupied molecular orbital level and additional parameters.

The invention discloses a hydrogen energy and natural energy heat pump heat supply and refrigeration integrated system and method, and relates to the technical field of hydrogen energy and natural energy heat pump heat supply and refrigeration integration. The heat pump heating module comprises the following steps that S1, carbon dioxide in air is absorbed through a refrigerant or the refrigerant and released into water; the carbon dioxide heat pump is used, and carbon dioxide is a clean refrigerant, has no destructive influence on the environment, is stable in chemical property, non-combustible, not easy to decompose at high temperature, does not generate harmful gas, is non-toxic, reduces threats to people due to leakage, is good in fluidity and has a relatively high evaporation latent heat value; compared with conventional refrigerants, the compression ratio of carbon dioxide is much smaller than that of common refrigerants, high performance coefficient and mechanical efficiency can be achieved, the high condensing temperature enables the exhaust temperature of a compressor to be high, and water at the high temperature can be obtained.

The invention discloses an annealing-free ferroelectric film material and a device application thereof. The invention provides a lanthanum-doped hafnium zirconium oxide (La: HZO) ferroelectric material using atomic layer deposition. The crystallization temperature and ferroelectric characteristics of the material are regulated and controlled by adjusting the deposition temperature and the oxygen source pulse time; the lanthanum doping proportion is regulated and controlled to control the ferroelectric characteristic and the electric leakage characteristic of the gate dielectric, the ferroelectric material which does not need annealing and is high in remanent polarization intensity and durability is achieved, the requirement for the process temperature needed by the subsequent process is met, and the ferroelectric material can be perfectly compatible with the subsequent process of a modern integrated circuit. Based on the material, a high-performance FeFET and a storage circuit thereof can be realized, and a high-performance FeRAM and a storage circuit thereof can also be realized. Compared with other HfO2 materials needing to be annealed to realize ferroelectricity, the material has lower crystallization temperature, higher remanent polarization under the same thermal budget and smaller electric leakage.

The invention belongs to the technical field of carbon nanomaterials, and particularly relates to a carbon dot assembly and a preparation method and application thereof. Compared with a traditional carbon dot, the donor-acceptor structure promotes the charge separation process in the carbon dot assembly, so that electrons can be transferred from an inner core serving as an electron donor to an interface serving as an electron acceptor, and then the electrons act with surrounding oxygen to promote generation of superoxide free radicals and photogenerated holes. The carbon dot assembly provided by the invention has excellent properties, and can specifically generate I-type active oxygen and oxidize important biological substrates through photogenerated holes, so that efficient anti-tumor photodynamic therapy is realized. In addition, the particle size of the carbon dot assembly is larger, so that the carbon dot assembly can be targeted to tumor tissues through enhanced permeability and retention effect of tumor tissue characteristics, and further efficient tumor killing is realized.

The present invention discloses an aromatic amine organic compound and its application. The structure of the aromatic amine organic compound is shown in the general formula (1): the compound of the present invention is a monoamine compound containing benzo[4,5]imidazo[1,2-a]pyridine and its derivatives and benzoxazolyl or benzothiazolyl, has a more suitable Eg energy level and thermal stability, a lower evaporation temperature and a decomposition temperature higher than the evaporation temperature, and a higher extinction coefficient at a wavelength of 380nm, and can effectively absorb high-energy external light sources in the ultraviolet region to minimize damage to organic materials inside organic light-emitting devices. The compound of the present invention has a higher refractive index in the visible light field. After being applied to an OLED device as a covering layer, it can effectively improve the light extraction efficiency of the OLED device and reduce the angle dependence, thereby improving the device luminous efficiency and optimizing the visual deviation performance.

The invention discloses a high-efficiency expression and purification method of vaccinia virus mRNA (messenger Ribonucleic Acid) Cap 2 oxygen methyltransferase, which comprises the following steps: based on an escherichia coli expression system, adding a tag and a TEV (Tetraethyl Virus) restriction enzyme cutting site to an optimized vaccinia virus mRNA Cap 2 oxygen methyltransferase gene sequence, connecting to a multiple cloning site of a pGST (Glutathione Sequence Transferase)-parall2 expression vector, and transforming into escherichia coli BL21 for expression; finally, the vaccinia virus mRNA Cap 2 oxygen methyltransferase is obtained through GS4B affinity chromatography, Heparin affinity chromatography and gel filtration chromatography purification, the invention provides a more economical and practical technical route for synthesizing the vaccinia virus mRNA Cap 2 oxygen methyltransferase, and a technical foundation is laid for large-scale production of vaccinia virus capping enzyme.

The invention relates to an ethychlozate suspending agent as well as a preparation method and application thereof, and belongs to the technical field of plant growth regulators. The ethychlozate suspending agent mainly comprises water and the following components in percentage by mass: 5-20% of ethychlozate, 0.5-4% of a wetting agent, 0.3-3% of a dispersing agent, 1-2% of a thickening agent, 0.05-0.1% of a stabilizing agent and 4-10% of an anti-freezing agent, the wetting agent is selected from one of a sulfate anionic wetting agent, polyoxyethylene ether and isodecyl alcohol polyoxyethylene ether; the stabilizer is selected from one of formic acid, acetic acid, citric acid, sulfamic acid, sorbitol and sodium tripolyphosphate; the pH value of the ethychlozate suspending agent is 4 to 7. The ethychlozate suspending agent disclosed by the invention is high in suspension rate and good in low-temperature stability and heat storage stability in the storage and water-added use processes, can keep the drug effect stability of ethychlozate, and can adapt to reservoir conditions of various regions with relatively large temperature difference between south and north in China.

The application relates to the technical field of lithium ion battery positive electrode materials, in particular to a nickel-rich positive electrode material and a preparation method and application thereof. The preparation method is as follows: in a vacuum and high-temperature environment, a mixed solvent composed of acid, an organic solvent and an aqueous solution has a low boiling point, can be quickly self-evaporated, metal cation M1, metal cation M2, lithium ions, nickel ions and anions in the mixed solution are quickly precipitated, an atomically mixed uniform metal salt, nickel salt and lithium salt mixture is obtained, then high-performance nickel-rich positive electrode material with high crystallinity, small lithium-nickel mixing degree and accurate stoichiometric ratio is obtained through solid-phase sintering; the preparation method is simple, atomically mixed material can be realized, no element is lost in the whole synthesis process, the atomic utilization rate is high, the stoichiometric ratio is accurately controlled, and the method is suitable for wide application.

The invention discloses an acyl-containing quaternary ammonium salt compound, a phosphorite reverse flotation collector and a reverse flotation method.The preparation method of the acyl-containing quaternary ammonium salt compound comprises the following steps that fatty acyl chloride is added into an organic solution of N, N-dimethyl-1, 4-butanediamine, a reaction is conducted under the ice bath condition, after the reaction is finished, a saturated NaHCO3 aqueous solution is used for washing, liquid separation is conducted, and the acyl-containing quaternary ammonium salt compound is obtained; drying the obtained organic phase and removing the solvent to obtain an intermediate; and dissolving the intermediate in ethyl acetate, mixing with halogenated ethane, carrying out a stirring reflux reaction in a nitrogen atmosphere at 40-60 DEG C, and after the reaction is finished, filtering and washing to obtain the acyl-containing quaternary ammonium salt compound. The acyl-containing quaternary ammonium salt compound prepared through the method serves as a phosphorite reverse flotation desilicication collecting agent and is combined with a magnesium removal collecting agent, magnesium removal, desilicication and potassium and sodium feldspar removal can be efficiently achieved, the process is simplified, water is saved, consumption is reduced, and the acyl-containing quaternary ammonium salt compound has wide application prospects.

This invention relates to a compound containing a nitrogen heterocyclic structure and an organic electroluminescent device. Deuteration or aryl substitution at the active sites of the compound enhances its chemical, photoelectric, and thermal stability, thereby improving device stability and lifespan. The compound can form a good premix material with the P-type compound of this invention, exhibiting good P / N stability and mass production stability during evaporation. Furthermore, the formed premix material has a more balanced carrier mobility, significantly improving device efficiency and lifespan. The materials of this invention all possess excellent solubility, effectively addressing the problems of pore blockage in production lines and difficult mask cleaning, while also significantly reducing material preparation and recycling costs.

The present invention provides a non-aqueous electrolyte for lithium-ion batteries and lithium-ion batteries, belonging to the technical field of lithium-ion batteries. The non-aqueous electrolyte for lithium-ion batteries uses compound A as shown in formula 1 and / or compound B as shown in formula 2 as a new additive. Compound A and compound B can form a film with fluoroethylene carbonate, propylene sulfite and vinyl sulfate in a preferential manner, forming a SEI film with a dense structure, uniform thickness and high mechanical strength on the silicon-carbon negative electrode, so that the SEI film has good thermodynamic stability and electrochemical stability, reduces the impedance between interfaces, inhibits the dissolution of transition metals, and enables the battery to have excellent room temperature cycle stability and high temperature cycle stability. The capacity retention rate of a lithium-ion battery using the electrolyte of the present invention can reach more than 76% after 1,000 cycles at room temperature, and the capacity retention rate can reach more than 74% after 800 cycles at high temperature.

The application discloses a kind of poly (alpha-ketone selenium amide) compound and its preparation method and application.The application is by under protective atmosphere, taking elemental selenium, poly alpha-halo aryl ethanone compound monomer and polyamine compound monomer mixing, adding base and organic solvent, stirring is carried out polymerization reaction;After reaction, precipitation, drying preparation the poly (alpha-ketone selenium amide) compound of described.The application directly converts abundant and economic, stable, low-toxicity elemental selenium into novel selenium-containing functional polymer, enriches the structure of selenium-containing polymer;Reaction atomic utilization rate is 100%, no toxic and harmful byproduct is generated;Reaction is carried out at room temperature, without metal catalyst, simple operation, polymerization reaction yield is high;The obtained series poly (alpha-ketone selenium amide) has non-traditional luminescent property, and is expected to be applied in optoelectronic device field.

The invention discloses egg white noodles and a preparation method thereof, and belongs to the technical field of food processing. The egg white noodles comprise the following raw materials in parts by mass: 200-300 parts of wheat flour, 100-200 parts of whole wheat flour and 1-24 parts of egg white. The prepared egg white noodles are low in viscosity, not prone to caking and good in film forming property, egg white protein and gluten protein interact to form a compact network structure, after the noodles are cooked, various properties of the noodles are obviously superior to those of whole egg and egg yolk noodles, the network structure of protein and starch can be regulated and controlled by further adding the pomelo peel polysaccharide, and the comprehensive performance of the noodles is improved. Additives such as isomaltitol and inula nervosa are added, so that the digestion speed of starch is reduced, and compared with common noodles, the noodles have a lower glycemic index, can more stably control the blood glucose level and are beneficial to prevention of diabetes mellitus.

The connecting gasket comprises a base body, the base body is provided with a pair of clamping parts which are arranged at an included angle of 30 degrees to 70 degrees, the upper ends of the two clamping parts are inclined and folded upwards and then bent in a round chamfering mode to form inner flow guide parts, the ends, away from the clamping parts, of the inner flow guide parts are folded outwards to form bearing parts, and the bearing parts are connected with the clamping parts. One end, far away from the clamping part, of the bearing part is obliquely folded downwards to form an outer flow guide part; the clamping part is arranged on the periphery of the small-diameter steel bar in a clamping mode, and the bearing part abuts against the surface of the lower end of the large-diameter steel bar.

The invention relates to the technical field of preparation of thermal energy storage media, and in particular to an oil-based thermal energy storage medium, comprising the following raw materials in parts by weight: 65-85 parts of Class III base oil, 1-3 parts of composite additives, 1-3 parts of antioxidants, 5 parts of alkyl naphthalene, and no more than 10 parts of polyalphaolefins; the invention introduces Co and La elements into a solid catalyst, and in the presence of the Co and La elements, in a prepared hydrogenation solid catalyst, Co particles have a smaller particle size, stronger dispersibility, better stability on a carrier, and more abundant electrons; since alumina itself is acidic, as a solid catalyst, it is easy to cause C-C bond breakage during hydrogenation, and the addition of Co and La elements increases the basicity of the catalyst, which to a certain extent avoids the C-C bond breakage caused by the acidic carrier, so that the solid catalyst has better properties in the hydrogenation reaction.

The application belongs to the technical field of polyether preparation, and discloses a solid superbase catalyst and a method for preparing isomeric alcohol polyether by using the same. The solid superbase catalyst comprises a catalyst carrier and a strong base loaded on the catalyst carrier; the strong base is at least one selected from CH3OK, CH3ONa, KOH and NaOH; and the catalyst carrier comprises one of MgO, ZrO2 and Al2O3. The solid superbase catalyst provided by the application is composed of a catalyst carrier and a strong base loaded on the catalyst carrier, and has high catalytic activity and high reaction efficiency. When the solid superbase catalyst is used as a catalyst, isomeric alcohol polyether with low odor, narrow molecular weight distribution and few by-products can be prepared.

The invention discloses a high-efficiency expression and purification method of a vaccinia virus capping enzyme D1D12 compound, which comprises the following steps: based on a Bac-to-Bac system, adding a His tag and a TEV restriction enzyme cutting site to optimized D1 and D12 gene sequences, respectively connecting the D1 and D12 gene sequences to Polyhedin of a pFastBac expression vector and multiple cloning sites behind a P10 promoter to prepare expression baculovirus plasmids, and purifying the expression baculovirus plasmids to obtain the vaccinia virus capping enzyme D1D12 compound. Then transfecting the recombinant baculovirus particles into insect cells to generate recombinant baculovirus particles; finally, the vaccinia virus capping enzyme D1D12 compound is obtained through nickel column affinity chromatography, Heparin affinity chromatography and gel filtration chromatography purification, the invention provides a technical route for synthesizing the vaccinia virus capping enzyme D1D12 compound which is more economical and practical, and a technical foundation is laid for large-scale production of the vaccinia virus capping enzyme.