94results about How to "The preparation method is simple and easy to obtain" patented technology

The invention relates to the technical field of chemical engineering, in particular to high-conductivity nanometer heat conduction oil and a preparation method thereof. The high-conductivity nanometerheat conduction oil comprises the following components in parts by weight: 85 to 100 parts of base oil, 10 to 15 parts of a dispersing agent, 10 to 15 parts of an antioxidant, 2 to 5 parts of an anticorrosion agent, 2 to 4 parts of a metal passivator, 2 to 4 parts of an antifogging agent, 4 to 9 parts of silica powder and 0.5 to 1.5 parts of carbon nano tubes or graphene. The product is high in heat stability, high in heat efficiency, low in toxicity and high in safety; the production raw materials are simple and easy to obtain, safe, environmentally-friendly, simple in preparation method andwide in application.

The invention provides an amorphous calcium carbonate nanosheet material and a preparation method thereof. Tellurium nanowires are washed, and washed tellurium nanowires are obtained; then a tellurium nanowire solution is prepared from the washed tellurium nanowires, the tellurium nanowire solution, a carbon source and a calcium source have a reaction, and the amorphous calcium carbonate nanosheet material is obtained; the zeta potential of the washed tellurium nanowires is controlled to be smaller than or equal to minus 14 mV, the volume ratio of the tellurium nanowires to a first solvent is controlled to be (0.2-10):1, so that one-dimensional tellurium nanowire materials used as formworks can induce the calcium source to react with the carbon source, amorphous calcium carbonate is obtained, and the nanosheet material can be further assembled. Meanwhile, according to the preparation method, materials of the formworks are simple and easy to obtain, the preparation method is simple and controllable, and batch production is facilitated.

The invention discloses a nitrogen-containing borate lubricating oil additive and a preparation method thereof and belongs to the technical field of lubricating oil. The preparation method comprises the following steps: firstly weighing raw materials according to the molar ratio of boric acid to cetanol to ethanol amine of (0.5-1.2):(0.5-3):(1-5); then adding the boric acid and the cetanol according to the molar ratio, adding a solvent, reacting for 0.8-1.2 hours at a temperature of 115-125 DEG C, then adding the ethanol amine according to the molar ratio, reacting for 4-6 hours and then refluxing. A nitrogen boron complex prepared by the invention instantaneously forms a ceramic boron nitride molecular film with super-strong wear resistance in a molecular form under the actions of temperature and pressure in a locomotive, has the efficacies of efficiently saving energy, reducing noise, protecting environment and prolonging the service life of the locomotive, is particular crucial for non-selectivity to metals and does not corrode a rubber sealing part; the additive can also efficiently slow down the rate of lubricating oil temperature rise and has more excellent performance in the high-temperature, high-speed and heavy-load locomotive; moreover, the raw materials are easy to obtain, the preparation method is simple, the cost is low, the hydrolytic stability is high, and the anti-wear and antifriction performances are good.

The invention discloses a wall of a light steel structural house. The wall is divided into an inner wall and an outer wall, wherein the inner wall is composed of gypsum boards, wall surface OSBs and alight steel keel, with the light steel keel as a bearing framework, the two sides of the light steel keel are each provided with one wall surface OSB, and the gypsum boards are located on the outermost layers; the outer wall is composed of a gypsum board, one wall surface OSB, a light steel keel, the other wall surface OSB, an insulating layer, a ventilation layer and an outer wall hanging platefrom inside to outside. The middle of each light steel keel is filled with a heat preserving and insulating material, a wood keel is arranged in the middle of the ventilation layer, breathing paper isattached to the surface, close to the insulating layer, of the ventilation layer, and all layers of the inner wall and the outer wall are connected together by cold-rolled steel nails from the two sides in a fastened mode. The wall is low in weight and good in wind and quake resistance, has good features of heat preserving and insulating, sound insulating, fire resistance, moisture prevention, corrosion prevention and the like, and can be widely applied to office buildings, villas, storehouses, stadiums, entertainment venues and tourism buildings.

The invention discloses a 3-amino-3-hydroxymethyloxindole derivative shown as a formula (I) and a preparation method thereof. The 3-amino-3-hydroxymethyloxindole derivative is obtained by taking 3-diazooxindole, aniline and formaldehyde as raw materials, taking rhodium acetate as a catalyst and taking an organic solvent as a solvent through a one-step reaction. The preparation method disclosed by the invention can be used for constructing a compound with a plurality of functional groups in one step, and has the characteristics of high flexibility, high selectivity, efficient atom economy, high yield and simplicity and safety in operation and the like. The invention further discloses an inhibition effect of the 3-amino-3-hydroxymethyloxindole derivative shown as the formula (I) on proliferation of five types of tumor cells including human osteosarcoma cells (SJSA-1), human colorectal cancer cells (HCT-116), hepatocellular carcinoma cells (BEL7402), human oral epidermoid carcinoma cells (KB) and human T-cell leukemia cells (Jurkat).

The invention discloses a gulfweed polysaccharide-based edible packaging film. The packaging film comprises, by weight, 56-82 parts of wheat flour, 20-38 parts of gulfweed polysaccharides, 2-10 parts of sucrose, 0.2-0.3 part of active polypeptides, 2-10 parts of vegetables, 5-15 parts of eggs, 10-25 parts of chitosan and 2-10 parts of water, and a weight ratio of the gulfweed polysaccharides to the sucrose is (2-15):1. Materials daily eaten by people are adopted as the raw materials of the packaging film, so the produced packaging film can be used as a packaging film for foods and medicines, has good instant solubility and mechanical performances, also can be used as a food to relieve hunger, and can remove free radials on the surfaces of the foods, delay the oxidation time of the foods and facilitate the prolongation of the shelf life of the foods and the improvement of the quality of the foods when used for packaging fresh vegetables or meat products.

The invention relates to high-temperature well cementing cement and high-temperature well cementing cement grout. The high-temperature well cementing cement comprises cement clinker and gypsum, wherein the cement clinker comprises the following mineral components in percent by weight: 30-40% of tricalcium silicate, 45-60% of dicalcium silicate, 1-4% of tricalcium aluminate and 10-20% of tetracalcium aluminoferrite. Through optimization and matching of the mineral composition of a cement base material, the contents of the tricalcium silicate, the dicalcium silicate, the tricalcium aluminate andthe tetracalcium aluminoferrite as cement components are adjusted, so that the hydration progress of the cement better meets the high-temperature well cementing need; the high-temperature well cementing cement can effectively solve the problem of decay of high-temperature strength of set cement in deep and ultradeep well cementing engineering; the preparation method is simple and easy to obtain,can replace the existing high-temperature well cementing cement and the existing well cementing cement grout system can be replaced; the structural durability and the structural safety in high-temperature complex deep well cementing engineering are facilitated.

The invention relates to a lithium-sulfur battery positive electrode material and a preparation method thereof, in particular to a fiber carbon-based lithium-sulfur battery cathode material doped withFe3C nanoparticles and having a hollow vesicle structure. The preparation method comprises the following steps: firstly, preparing ferric oxide nanoparticles with regular shapes; uniformly and properly coating the particles into silk threads by using an electrostatic spinning method, pre-oxidizing and carbonizing the silk threads to finish the preparation, pulverizing the Fe2O3 particles with theparticle size of 140-750nm into fine Fe3C nanoparticles with the particle size of 5-10nm in the carbonizing process, and leaving hollow vesicles. According to the materials designed in the invention,the chemical adsorption effect of Fe3C is combined with the physical limitation of the hollow vesicles of the carbon fibers, polysulfide is adsorbed and fixed, a confinement space is provided, a goodion and electron transmission path is guaranteed, charge and discharge volume expansion is relieved, meanwhile, the conductivity of the material is improved through doped N atoms, and the overall electrochemical performance of the Li-S battery is improved.

The invention discloses a reaction type greasy base degradable surfactant as well as a synthetic method and application thereof. Polyether blocks and unsaturated double bonds are introduced in grease, so that the prepared degradable surfactant can be used for conventional emulsion polymerization and miniemulsion polymerization, as a result, stable polymer latex can be obtained. According to the invention, the price of production raw material is low, the preparation process is simple and feasible and environment-friendly, and a new approach is provided for the preparation of biodegradable latex.

The invention discloses an anti-ageing and thermal-insulation coating and a preparation method thereof. The anti-ageing and thermal-insulation coating is prepared from ingredients in mass fraction: 75 to 85 parts of acrylic resin, 25 to 40 parts of epoxy resin, 15 to 26 parts of rosin pentaerythritol ester, 7 to 15 parts of cerium oxide, 5 to 10 parts of zirconium molybdate, 3 to 8 parts of sodium carboxymethyl cellulose, 4 to 9 parts of magnesium hydroxide, 7 to 13 parts of wollastonite, 6 to 14 parts of potassium alginate, 9 to 15 parts of rutile powder, 36 to 55 parts of deionized water, 2 to 5 parts of coalescing agent, 2 to 5 parts of complex antioxidant and 1 to 3 parts of pigment. The anti-ageing and thermal-insulation coating disclosed by the invention has strong ageing resistance, good stability, a long service life, a simple preparation method and suitability for large-scale production; meanwhile, raw materials are easy to obtain.

The invention discloses an emulsion containing Heitacai polysaccharide. The emulsion containing Heitacai polysaccharide is prepared from, by mass, 1 wt%-3 wt% of mineral oil, 1 wt%-10 wt% of glycerinum, 0.5 wt%-2 wt% of cetostearyl alcohol, 0.5 wt%-1 wt% of sorbitan stearate, 1 wt%-2 wt% of polysorbate-60, 0.1 wt%-1 wt% of polydimethylsiloxane, 0.1 wt%-2 wt% of glyceryl stearate, 0.5 wt%-2 wt% of PEG-100 stearate, 0.05 wt%-0.3 wt% of xanthan gum, 0.1 wt%-0.5 wt% of allantoin, 0.25 wt%-0.65 wt% of phenoxyethanol, 0.08 wt%-0.16 wt% of methylparaben, 0.03 wt%-0.13 wt% of propyl hydroxybenzoate and the balance deionized water. The emulsion is mild and free of irritation and has the effects of aging resistance, moisture preservation and water replenishment on skin.

The invention discloses a bio-click-triggered high-efficiency targeting conjugate and a bio-click-triggered high-efficiency targeting multi-component composition as well as preparation methods and application thereof. The multi-component composition is formed by assembling an anti-angiogenic therapeutic agent, a chemotherapeutic drug and a photosensitizer in the same nano-system; furthermore, thetargeting conjugate (a cycloalkyne-heparin polysaccharide-natural active hydrophobic medicine) is modified with a small molecular target with a cycloalkyne structure, so that in-vivo click targeting is efficiently realized. After nanoparticles are formed in water by means of self-assembly, a chemotherapeutic medicine and a thermotherapy photosensitizer are simultaneously encapsulated in hydrophobic cores of the nanoparticles by using a physical method; therefore, the toxic and side effects on the normal tissues are greatly reduced while the combined administration is realized; the conjugate and the multi-component composition have the characteristics of being intelligent, efficient and low in toxicity, having targeting property, reversing tumor MDR, having a synergistic anti-tumor effect,and the like; a brand-new combined chemotherapy model is created.

The invention discloses a roof of a light steel structure house. The roof from inside to outside is a light steel keel, roof OSB boards, an insulating layer, a ventilation layer, roof OSB boards, a waterproof layer and roof asphalt tiles. The light steel keel is filled with heat preservation and thermal insulation material, a wooden keel is placed in the middle of the ventilation layer, and breathing paper is pasted close to the insulating layer. The roof of the light steel structure house is reasonable in structure, light and solid, capable of achieving heat preservation and thermal insulation, capable of achieving sound insulation and flame resistance, capable of achieving water insulation and wind resistance, good in wind resistance and earthquake resistance effect and capable of withstanding certain pressure without deformation and displacement.

The invention discloses moisturizing toner containing lettuce extract. The moisturizing toner containing the lettuce extract is prepared from, by mass, 5-15% of glycerinum, 1-10% of polyethylene glycol-8, 1-10% of butanediol, 1-5% of hamamelis virginiana, 1-5% of the lettuce extract, 0.1-0.3% of bi(hydroxymethyl) imidazolidinyl urea/iodine propynol butyl carbamate, 0.1-0.2% of allantoin and the balance deionized water. The moisturizing toner has the effects of whitening the skin, preserving moisture and replenishing water and makes the skin recover the healthy state of white touched with red.